Si1153 Data Sheet Proximity/Ambient Light Sensor IC with I2C Interface KEY FEATURES The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detector with I2C digital interface and programmable-event interrupt output. This touchless sensor IC includes dual 23-bit analog-to-digital converters, an integrated high-sensitivity array of visible and infrared photodiodes, a digital signal processor, and three integrated LED drivers with programmable drive levels. The Si1153 offers excellent performance under a wide dynamic range and a variety of light sources, including direct sunlight. The Si1153 can also work under dark glass covers. The photodiode response and associated digital conversion circuitry provide excellent immunity to artificial light flicker noise and natural light flutter noise. With two or more LEDs, the Si1153 is capable of supporting multiple-axis proximity motion detection. The Si1153 is provided in a 10-lead 2x2 mm DFN package or in a 10-lead 2.9x4.9 mm LGA module with integrated LED, and is capable of operation from 1.62 to 3.6 V over the -40 to +85 C temperature range. VDD Internal Osc. Regulator 940 nm Bandpass Filter. MUX . . * Up to three independent LED drivers. * 30 current settings from 5.6 mA to 360 mA for each LED driver. * Operates in direct sunlight with optional on-die 940 nm passband filter. * On die 940 bandpass filter that rejects unwanted visible light and IR from daylight and other sources (Si1153AA09/AA9X). * Up to 128 klx dynamic range possible across two ADC range settings. ADC1 LED1 ADC2 Signal Processor and Control (Filter Only in AA09 & AA9X versions) * From under 1 cm, to 200 cm with additional lensing (e.g., 5 mm hemispherical lens as in our EVB). * Ambient light sensor * <100 mlx resolution possible, allowing operation under dark glass. ALS Photodiodes LIGHT * Proximity detector * From under 1 cm, to 50 cm without additional lensing. LED Drivers LED2 * LED3 ** * Industry's lowest power consumption * 1.62 to 3.6 V supply voltage. * 9 A average current (LED pulsed 25.6 s every 800 ms at 180 mA plus 3 A Si1153 supply). * <500 nA standby current. INT * 25.6 s LED "on" time keeps total power consumption duty cycle low without compromising performance or noise community. SCL * Internal and external wake support. SDA AD I2C Engine I2C addr sel * Built-in voltage supply monitor and power-on reset controller. APPLICATIONS * Pull up to VDD with 47 kOhm resistor to select primary I2C address (0x53), or down to GND for alt I2C address 0x52. ** Pull up to VDD with 47 kOhm resistor * Wearables * Handsets * Display backlighting control * Consumer electronics silabs.com | Building a more connected world. Rev. 1.1 Si1153 Data Sheet Feature List 1. Feature List * Proximity detector * From under 1 cm to 50 cm without additional lensing. * From under 1 cm to 200 cm with additional lensing (e.g., 5 mm hemispherical lens). * Up to three independent LED drivers. * 30 current settings from 5.6 mA to 360 mA for each LED driver. * Operates in direct sunlight with optional on-die 940 nm passband filter. * On die 940 bandpass filter that rejects unwanted visible light and IR from daylight and other sources (Si1153- AA09/ AA9X). * Ambient light sensor * <100 mlx resolution possible, allowing operation under dark glass. * Up to 128 klx dynamic range possible across two ADC range settings. silabs.com | Building a more connected world. * Industry's lowest power consumption * 1.62 to 3.6 V supply voltage. * 9 A average current (LED pulsed 25.6 s every 800 ms at 180 mA plus 3 A Si1153 supply). * <500 nA standby current. * 25.6 s LED "on" time keeps total power consumption duty cycle low without compromising performance or noise community. * Internal and external wake support. * Built-in voltage supply monitor and power-on reset controller. * Trim-able internal oscillator with typical 1% accuracy. * I2C Serial communications * Up to 3.4 Mbps data rate. * Slave mode hardware address decoding. * Two package options: * 10-lead 2 x 2 x 0.65 mm DFN * 10-lead 2.9 x 4.9 x1.2 mm LGA module with integrated 940 nm LED * Temperature Range: -40 to +85 C Rev. 1.1 | 2 Si1153 Data Sheet Ordering Guide 2. Ordering Guide Table 2.1. Ordering Guide Family DFN Package ALS OPNs Si1153 Si1153-AA00-GMR 2 x 2 mm DFN Si1153 Si1153-AA09-GMR 2 x 2 mm DFN Si1153 Si1153-AA9x-GMR Si1153 Si1153-AA09-AMR (AECQ100 qualified) 940 nm Proximity Filter (# of LED Drivers) 3 0 Y 3 0 2.85 x 4.9 mm LGA Module Y 3 1 2 x 2 mm DFN Y 3 0 silabs.com | Building a more connected world. Y # of LEDs Included Rev. 1.1 | 3 Si1153 Data Sheet Functional Description 3. Functional Description The Si1153 is an active optical reflectance proximity detector, with ambient light sensors whose operational state is controlled through registers accessible through the I2C interface. The host can command the Si1153 to initiate on-demand Ambient Light or proximity measurements. The host can also place the Si1153 in an autonomous operational state where it performs measurements at set intervals and interrupts the host either after each measurement is completed or whenever a set threshold has been crossed. This results in overall system power saving, allowing the host controller to operate longer in its sleep state instead of polling the Si1153. VDD Internal Osc. Regulator ALS Photodiodes . . MUX 940 nm Bandpass Filter. LIGHT ADC1 LED1 ADC2 Signal Processor and Control (Filter Only in AA09 & AA9X versions) LED Drivers LED2 * LED3 ** INT SCL I2C Engine SDA AD I2C addr sel * Pull up to VDD with 47 kOhm resistor to select primary I2C address (0x53), or down to GND for alt I2C address 0x52. ** Pull up to VDD with 47 kOhm resistor Figure 3.1. Functional Block Diagram Figure 3.2. Si1153 DFN Package Basic Application silabs.com | Building a more connected world. Rev. 1.1 | 4 Si1153 Data Sheet Functional Description Figure 3.3. Si1153 LGA Module Basic Application 3.1 Ambient Light Sensing The Si1153 has photodiodes capable of measuring visible and infrared light. However, the visible photodiode is also influenced by infrared light. The measurement of illuminance requires the same spectral response as the human eye. If an accurate lux measurement is desired, the extra IR response of the visible-light photodiode must be compensated. Therefore, to allow the host to make corrections to the infrared light's influence, the Si1153 reports the infrared light measurement on a separate channel. The separate visible and IR photodiodes lend themselves to a variety of algorithmic solutions. The host can then take these two measurements and run an algorithm to derive an equivalent lux level as perceived by a human eye. Having the IR correction algorithm running in the host allows for the most flexibility in adjusting for system-dependent variables. For example, if the glass used in the system blocks visible light more than infrared light, the IR correction needs to be adjusted. Si1153 parts with the bandpass 940 nm filter cannot be used for ambient light sensing. If the host is not making any infrared corrections, the infrared measurement can be turned off in the CHAN_LIST parameter. By default, the measurement parameters are optimized for indoor ambient light levels, where it is possible to detect low light levels. For operation under direct sunlight, the ADC can be programmed to operate in a high signal operation so that it is possible to measure direct sunlight without overflowing. For low-light applications, it is possible to increase the ADC integration time. Normally, the integration time is 24.4 s. By increasing this integration time, the ADC can detect light levels as low as 100 mlx. The ADC integration time for the Visible Light Ambient measurement can be programmed independently of the ADC integration time of the Infrared Light Ambient measurement. The independent ADC parameters allow operation under glass covers having a higher transmittance to Infrared Light than Visible Light. When operating in the lower signal range, or when the integration time is increased, it is possible to saturate the ADC when the ambient light suddenly increases. Any overflow condition will have the corresponding data registers report a value of 0xFFddFF for 16-bit mode and 0x7FFFFF for 24-bit mode. The host can adjust the ADC sensitivity to avoid an overflow condition. If the light levels return to a range within the capabilities of the ADC, the corresponding data registers begin to operate normally. The Si1153 can initiate ALS measurements either when explicitly commanded by the host or periodically through an autonomous process. Refer to Section 4. Operational Modes for additional details. Two ADCs can be used for simultaneous readings of the visible or proximity photodiode and black dark current reference photodiode. When subtracted, these differential measurements remove dark current, reducing noise that enables lower light sensitivity. silabs.com | Building a more connected world. Rev. 1.1 | 5 Si1153 Data Sheet Functional Description 3.2 Proximity Sensing The Si1153 has been optimized for use as either a dual-port or single-port active reflection proximity detector. Over distances of less than 50 cm, the dual-port active reflection proximity detector has significant advantages over single-port, motion-based infrared systems, which are only good for triggered events. Motion-based infrared detectors identify objects within proximity, but only if they are moving. Single-port motion-based infrared systems are ambiguous about stationary objects even if they are within the proximity field. The Si1153 can reliably detect an object entering or exiting a specified proximity field, even if the object is not moving or is moving very slowly. However, beyond about 30-50 cm, even with good optical isolation, single-port signal processing may be required due to static reflections from nearby objects, such as tables, walls, etc. If motion detection is acceptable, the Si1153 can achieve ranges of up to 50 cm, through a single product window. For small objects, the drop in reflectance is as much as the fourth power of the distance. This means that there is less range ambiguity than with passive motion-based devices. For example, a sixteen fold change in an object's reflectance means only a fifty-percent drop in detection range. The Si1153 can drive up to three separate infrared LEDs. When the three infrared LEDs are placed in an L-shaped configuration, it is possible to triangulate an object within the three-dimensional proximity field. Thus, a touchless user interface can be implemented with the aid of host software. The Si1153 can initiate proximity sense measurements when explicitly commanded by the host or periodically through an autonomous process. Whenever it is time to make a PS measurement, the Si1153 makes up to six measurements, depending on what is enabled in the CHLIST parameter. Other ADC parameters for these measurements can also be modified to allow proper operation under different ambient light conditions. The LED choice is programmable for each of these six measurements. Each measurement can select which combination of 3 LEDs are turned on and which of two LED current setting banks are used to set the LED currents. Optionally, each proximity measurement can be compared against a host-programmable threshold. With threshold settings for each PS channel, it is also possible for the Si1153 to notify the host whenever the threshold has been crossed. This reduces the number of interrupts to the host, aiding in efficient software algorithms. The Si1153 can also generate an interrupt after a complete set of proximity measurements, ignoring any threshold settings. silabs.com | Building a more connected world. Rev. 1.1 | 6 Si1153 Data Sheet Functional Description To support different power usage cases dynamically, the LED current of each output is independently programmable. The current can be programmed anywhere from 5.5 to 354 mA. (See Table 8.8 Typical LED Current vs. LED Code on page 46.) Therefore, the host can optimize for proximity detection performance or for power saving dynamically. This feature can be useful since it allows the host to reduce the LED current once an object has entered a proximity sphere, and the object can still be tracked at a lower current setting. Finally, the flexible current settings make it possible to control the infrared LED currents with a controlled current sink, resulting in higher precision. The ADC properties are programmable. For indoor operation, the ADC should be configured for low signal range for best reflectance sensitivity. When under high ambient conditions, the ADC should be configured for high signal level range operation. When operating in the lower signal range, it is possible to saturate the ADC when the ambient light level is high. Any overflow condition is reported with a value of 0xFFFF for 16-bit mode and 0x7FFFFF for 24-bit mode. The host can then adjust the ADC sensitivity to avoid an overflow condition. If the light levels return to a range within the capabilities of the ADC, the corresponding data registers begin to operate normally. The Si1153 can be configured with three different sizes of proximity photodiode to enable the highest sensitivity without saturation. Proximity detection ranges beyond 50 cm can be achieved with lensing and by selecting a longer integration time. The detection range may be increased further, even with high ambient light, by averaging multiple measurements. The Si1153-AA09 version of the Si1153 is designed with an on die 940 nm bandpass filter. It is designed to reject sunlight and to pass as much of the LED excitation energy as possible. 940 nm is selected as the operating wavelength since it corresponds to a dip in the energy of the solar spectrum. Figure 3.4. Typical Si1153-AA09 Filter Response Compared to the Sunlight Energy Spectrum silabs.com | Building a more connected world. Rev. 1.1 | 7 Si1153 Data Sheet Functional Description 3.3 Power Consumption The Si1153 alternates between three power consumption states: Active, Suspend, and Sleep. (See the diagram below for an illustratation of each of these states.) The total power consumed by the part depends heavily on the measurement rate, measurement mode, and measurement gain for the various channels enabled. The power levels for the three modes, as well as the Active Power time per reading, are provided in this document. The Suspend time (where the A/D and PD are operating) has two parts. One is determined by the user setup and can be determined by the DECIM_RATE and HW_GAIN setup information in Section 7.2 Channel Specific Setup Areas of the Parameter Table, while the other (A/D Startup time) is determined by tadstart, shown in Table 8.2 Electrical Performance Characteristics on page 40. Sum is "Processing Time Per Measurement" (tprocess) Mid Reading Op Suspend Power (PD & A/D Active) Reading Init. Power Reading Conclude Active Power A Phase Sleep Power B Phase Time A/D startup time per measurement is determined by the data sheet (tadstart) The A/D time (per measurement) is determined by the user's configuration of the parameter table. This complete measurement is repeated at the rates determined by the user's configuration of the parameter table. Figure 3.5. Power Consumption States During a Reading Every A/D conversion has three periods: 155 s at 4.5 mA (setup time by internal controller) 48.8 s at 525 A (setup time by A/D) 48.8 s * (2HW_GAIN[3:0]) at 525 A (Actual A/D time that will vary with integration time) silabs.com | Building a more connected world. Rev. 1.1 | 8 Si1153 Data Sheet Functional Description 3.4 Host Interface The host interface to the Si1153 consists of three pins: * SCL * SDA * INT SCL and SDA are standard open-drain pins as required for I2C operation.The Si1153 asserts the INT pin to interrupt the host processor. The INT pin is an open-drain output. A pull-up resistor is needed for proper operation. As an open-drain output, it can be shared with other open-drain interrupt sources in the system. For proper operation, the Si1153 is expected to fully complete its Initialization Mode prior to any activity on the I2C. The default I2C address of the Si1153 can be changed by pulling the LED pin to ground. This changes the I2C address to 0x52 (the default value is 0x53). The INT, SCL, and SDA pins are designed so that it is possible for the Si1153 to enter the Off Mode by software command without interfering with normal operation of other I2C devices on the bus. Conceptually, the I2C interface allows access to the Si1153 internal registers. An I2C write access always begins with a start (or restart) condition. The first byte after the start condition is the I2C address and a read-write bit. The second byte specifies the starting address of the Si1153 internal register. Subsequent bytes are written to the Si1153 internal register sequentially until a stop condition is encountered. An I2C write access with only two bytes is typically used to set up the Si1153 internal address in preparation for an I2C read. The I 2C read access, like the I2C write access, begins with a start or restart condition. In an I2C read, the I2C master then continues to clock SCK to allow the Si1153 to drive the I2C with the internal register contents.The Si1153 also supports burst reads and burst writes. The burst read is useful in collecting contiguous, sequential registers. The Si1153 register map was designed to optimize for burst reads for interrupt handlers, and the burst writes are designed to facilitate rapid programming of commonly used fields, such as thresholds registers. The internal register address is a six-bit (bit 5 to bit 0) plus an Auto increment Disable (on bit 6). The Auto increment Disable is turned off by default. Disabling the auto incrementing feature allows the host to poll any single internal register repeatedly without having to keep updating the Si1153 internal address every time the register is read. It is recommended that the host should read performance measurements (in the I2C Register Map) when the Si1153 asserts INT. Although the host can read any of the Si1153's I2C registers at any time, care must be taken when reading 2-byte measurements outside the context of an interrupt handler. The host could be reading part of the 2-byte measurement when the internal sequencer is updating that same measurement coincidentally. When this happens, the host could be reading a hybrid 2-byte quantity whose high byte and low byte are parts of different samples. If the host must read these 2-byte registers outside the context of an interrupt handler, the host should "double-check" a measurement if the measurement deviates significantly from a previous reading. silabs.com | Building a more connected world. Rev. 1.1 | 9 Si1153 Data Sheet Functional Description Figure 3.6. I2C Bit Timing Diagram Figure 3.7. Host Interface Single Write Figure 3.8. Host Interface Single Read Figure 3.9. Host Interface Burst Write Figure 3.10. Host Interface Burst Read Figure 3.11. Si1153 REG ADDRESS Format The following notes apply for the figures above: 1. Gray boxes are driven by the host to the Si1153. 2. White boxes are driven by the Si1153. 3. A = ACK or "acknowledge". 4. N = NACK or "no acknowledge". 5. S = START condition. 6. Sr = repeat START condition. 7. P = STOP condition. 8. AI = Disable Auto Increment when set. silabs.com | Building a more connected world. Rev. 1.1 | 10 Si1153 Data Sheet Operational Modes 4. Operational Modes The Si1153 can be in one of many operational modes at any time. It is important to consider the operation mode, since the mode has an impact on the overall power consumption of the Si1153. The various modes are: * Off Mode * Initialization Mode * Standby Mode * Forced Conversion Mode * Autonomous Mode 4.1 Off Mode The Si1153 is in the Off Mode when VDD is either not connected to a power supply or if the VDD voltage is below the stated VDD_OFF voltage described in the electrical specifications. As long as the parameters stated in Table 8.7 Absolute Maximum Ratings on page 45 are not violated, no current will flow through the Si1153. In the Off Mode, the Si1153 SCL and SDA pins do not interfere with other I2C devices on the bus. Ensure that none of the pins have a voltage larger than the voltage on the VDD pin. If VDD is grounded, for example, then current flows from system power to system ground through the SCL, SDA, and INT pull-up resistors and the ESD protection devices. Allowing VDD to be less than VDD_OFF is intended to serve as a hardware method of resetting the Si1153 without a dedicated reset pin. The Si1153 can also re-enter the Off Mode upon receipt of a software reset sequence. Upon entering Off Mode, the Si1153 proceeds directly from the Off Mode to the Initialization Mode. 4.2 Initialization Mode When power is applied to VDD and is greater than the minimum VDD Supply Voltage stated in the electrical specification table, the Si1153 enters its Initialization Mode. In the Initialization Mode, the Si1153 performs its initial startup sequence. Since the I2C may not yet be active, it is recommended that no I2C activity occur during this brief Initialization Mode period. The "Start-up time" specification in the electrical specification table is the minimum recommended time the host needs to wait before sending any I2C accesses following a power-up sequence. After Initialization Mode has completed, the Si1153 enters Standby Mode. During the Initialization mode, the I2C address selection is made according to whether LED2 is pulled up or down. 4.3 Standby Mode The Si1153 spends most of its time in Standby Mode. After the Si1153 completes the Initialization Mode sequence, it enters Standby Mode. While in Standby Mode, the Si1153 does not perform any Ambient Light measurements or Proximity Detection functions. However, the I2C interface is active and ready to accept reads and writes to the Si1153 registers. The internal Digital Sequence Controller is in its sleep state and does not draw much power. In addition, the INT output retains its state until it is cleared by the host. I2C accesses do not necessarily cause the Si1153 to exit the Standby Mode. For example, reading Si1153 registers is accomplished without needing the Digital Sequence Controller to wake from its sleep state. 4.4 Forced Conversion Mode The Si1153 can operate in Forced Conversion Mode under the specific command of the host processor. The Forced Conversion Mode is entered when the FORCE command is sent. Upon completion of the conversion, the Si1153 can generate an interrupt to the host if the corresponding interrupt is enabled. It is possible to initiate both a proximity and ALS measurement. 4.5 Automated Operation Mode The Si1153 can be placed in the Autonomous Operation Mode where measurements are performed automatically without requiring an explicit host command for every measurement. The START command is used to place the Si1153 in the Autonomous Operation Mode. The Si1153 updates the I2C registers for proximity and ALS automatically. The host can also choose to be notified when these new measurements are available by enabling interrupts. The conversion frequency for autonomous operation is set up by the host prior to the START command. The Si1153 can also interrupt the host when the proximity or ALS measurement reach a pre-set threshold. To assist in the handling of interrupts the registers are arranged so that the interrupt handler can perform an I2C burst read operation to read the necessary registers, beginning with the interrupt status register, and cycle through the various output registers. silabs.com | Building a more connected world. Rev. 1.1 | 11 Si1153 Data Sheet User to Sensor Communication 5. User to Sensor Communication 5.1 Basic I2C Operation I2C operation is dependent on serial I2C reads and writes to an addressable bank of memory referred to as I2C space. The diagram below outlines the registers used, some functionality and the direction of data flow. The I2C address is initially fixed but can be programmed to a new value. This new value is volatile and reverts to the old value on hardware or software reset. Only 7-bit I2C addressing is supported; 10-bit I2C addressing is not supported. The Si1153 responds to the I2C address of 0x53 or to an alternate address of 0x52. Part and Version ID Group PART ID REV ID SDA SDA Engine MFR ID INFO_0 & 1 (SPARES) SCL INPUT3 -> 0 MCU COMMAND COMMAND_WR_INT Sequencial Write Group SFR SPACE IRQ_EN 6 6 RESPONSE_1 Bit7: RUNNING Bit6: SUSPEND Bit5: SLEEP Interrupt Logic I2C SPACE 5 OR INT AND RESPONSE_0 CR 6 IRQ_STATUS OUTPUT0 to 25 Sequencial Read Group Figure 5.1. I2C Interface Block Diagram silabs.com | Building a more connected world. Rev. 1.1 | 12 OD Si1153 Data Sheet User to Sensor Communication 5.2 Relationship Between I2C Registers and Parameter Table Note that most of the Si1153 configuration is accomplished through `Parameters'. The Si1153 has an internal MCU with SRAM. The Parameters are stored in the Si1153 Internal MCU SRAM. The I2C Registers can be viewed as mailbox registers that form an interface between the host and the internal MCU. The figure below shows the relationship between some of the key interface registers to the internal Parameters managed by the internal MCU. * The I2C registers are directly accessible by the host. * The parameter table is: * Accessible indirectly via the command register (and others). * Used during setup to fix the operating modes of the Si1153. * 0x2C bytes long and is read and written indirectly, one bye at a time, via the command register. The data stored in the parameter table is volatile and is lost when the part is powered down or software reset command is sent to the part via the I2C part. silabs.com | Building a more connected world. Rev. 1.1 | 13 Si1153 Data Sheet User to Sensor Communication Figure 5.2. Accessing Parameters through I2C Registers silabs.com | Building a more connected world. Rev. 1.1 | 14 Si1153 Data Sheet User to Sensor Communication 5.3 I2C Command Register Operation Writing the codes shown below in the command summary table signals the sensor to undertake one of several complex operations. These operations take time and all commands should be followed by a read of the RESPONSE0 register to confirm the operation is complete by examining the counter and to check for an error in the error bit. The error bit is set in the RESPONSE0 register's command counter if there is an error in the previous command (e.g., attempt to write to an illegal address beyond the parameter table, or a channel and /or burst configuration that exceeds the size of the output field (26 bytes)). If there is no such error, then the counter portion of the command counter will be incremented. The RESPONSE_0 register should be read after every command to determine completion and to check for an error. If an error is found, which should not happen except for a host SW bug, the host should clear the error with a RESET command or a RESET_CMD_CTR command. One operating option is to do a RESET_CMD_CTR command before every command. Two of the commands imply another I2C register contains an argument. * STORE_NEW_I2C ADDR command implies a new address has been loaded in the parameter table location I2CID PARAMETER. * PARAM_SET command implies a byte has been stuffed into INPUT0 register. * The three CHAN_LIST commands imply the CHAN_LIST location in the parameter table has been configured. A valid CHAN_LIST implies other configuration areas in the parameter table are correctly setup as well. Two of the commands result in another I2C register containing return arguments (aside from incrementing RESPONSE0). * PARAM_SET results in the write data being copied in to I2C RESPONSE1 register. * PARAM_QUERY results in read data in the I2C RESPONSE1 register. silabs.com | Building a more connected world. Rev. 1.1 | 15 Si1153 Data Sheet User to Sensor Communication Table 5.1. Command Summary Command Register Commands RESET_CMD_CTR Code Input to Sensor Output of Sensor 0x00 ----------- ----------- 0x01 ----------- ----------- 0x11 ----------- ----------- 0x12 ----------- ----------- 0x13 ----------- ----------- Resets RESPONSE0 CMMND_CTR field to 0. RESET_SW Forces a Reset, Resets RESPONSE0 CMMND_CTR field to 0xXXX01111. FORCE Initiates a set of measurements specified in CHAN_LIST parameter. A FORCE command will only execute the measurements which do not have a meas counter index configured in MEASCONFIGx. PAUSE Pauses autonomous measurements specified in CHAN_LIST. START Starts autonomous measurements specified in CHAN_LIST. A START autonomous command will only start the measurements which has a counter index selected in MEASCONFIGx. PARAM_QUERY 0b01xxxxxx RESPONSE1 = result Reads Parameter xxxxxx and store results in RESPONSE1.xxxxxx is a 6 bit Address Field (64 bytes). PARAM_SET 0b10xxxxxx INPUT0 RESPONSE1 = INPUT0 Writes INPUT0 to the Parameter xxxxxx.xxxxxx is a 6 bit Address Field (64 bytes). Notes: 1. The successful completion of all commands except RESET_CMD_CTR and RESET_SW causes an increment of the CMD_CTR field of the RESPONSE0 register (bits [3:0]. 2. Resets RESPONSE0 CMMND_CTR field to 0. 3. Forces a Reset, Resets RESPONSE0 CMMND_CTR field to 0xXXX01111. 4. Uses CHAN_LIST in Parameter Space. 5. "xxxxxx" is a 6-bit Address Field (64 bytes). silabs.com | Building a more connected world. Rev. 1.1 | 16 Si1153 Data Sheet User to Sensor Communication 5.3.1 Accessing the Parameter Table (PARAM_QUERY & PARAM_SET Commands) The parameter table is written to by writing the INPUT_0 I2C register and the PARAM_SET command byte to the Command I2C register. The format of the PARAM_SET word is such that the 6 LSBits contain the location of the target byte in the parameter table. Example: To transfer 0xA5 to parameter table location 0b010101. Read RESPONSE0 (address 0x11) and store the CMMND_CTR field. Write 0xA5 to INPUT0 (address 0x0A). Write 0b10010101 to COMMAND (address 0x0B). Read RESPONSE0 (address 0x11) and check if the CMMND_CTR field incremented. If there is no increment or error, repeat the "read the RESPONSE0" step until the CMMND_CTR has incremented. If there is an error send a RESET or a RESET_CMD_CTR command. The two write commands (to INPUT0 and COMMAND) can be in the same I2C transaction. Example: To read data from the parameter table location 0b010101. Read the RESPONSE0 (address 0x11) and store the CMMND_CTR field. Write 0b01010101 to the COMMAND (address 0x0B). Read RESPONSE0 (address 0x11) and check if the CMMND_CTR field incremented. If there is no increment or error, repeat the "read RESPONSE0" step until the CMMND_CTR has incremented. Read RESPONSE1 (address 0x10) this gives the read result. If there is an error send RESET or a RESET_CMD_CTR command. The last two read commands (from RESPONSE0 and RESPONSE1) should not be in the same I2C transaction. 5.3.2 Sensor Operation Initiation Commands The FORCE, PAUSE, and START commands make use of the information in CHAN_LIST. Configure CHAN_LIST prior to using any of these commands. 5.3.3 RESET_CMD_CTR Command Resets RESPONSE0 CMMND_CTR field and does nothing else. 5.3.4 RESET Command Resets the sensor and puts it into the same state as when powering up. The parameter table and all I2C registers are reset to their default values. silabs.com | Building a more connected world. Rev. 1.1 | 17 Si1153 Data Sheet User to Sensor Communication 5.4 I2C Register Summary The content of the three MSBits of Response0 after reset will depend on the running state (see the Response0 write up). Table 5.2. I2C Registers Register Name I2C Address Direction WRT Host Function Value after Reset (Hard or Soft) Direction WRT Sensor PART_ID 0x00 IN Returns DEVID (0x53 for the Si1153). PART_ID OUT HW_ID 0x01 IN Returns Hardware ID. HW_ID OUT REV_ID 0x02 IN Hardware Rev (0xMN). REV_ID OUT HOSTIN0 0x0A IN/OUT Data for parameter table on PARAM_SET write to COMMAND register. 0x00 IN COMMAND 0x0B IN/OUT Initiated action in Sensor when specific codes written here. 0x00 IN IRQENABLE 0x0F IN/OUT The six least significant bits enable Interrupt Operation. 0x00 IN RESPONSE1 0x10 IN Contains the readback value from a param query or a param set command. 0x00 IN/OUT RESPONSE0 0x11 IN The 5th MSB of the counter is an error indicator, with the 4 LSBits indicating the error code when the MSB is set. 0xXXXX1111 IN/OUT IRQ_STATUS 0x12 IN The six least significant bits show the interrupt status. 0x00 IN/OUT HOSTOUT0 0x13 0x00 IN/OUT to to HOSTOUT25 0x2C IN Captured Sensor Data. 5.4.1 PART_ID I2C Address = 0x00; Contains Part ID, e.g., 0x53 for Si1153. silabs.com | Building a more connected world. Rev. 1.1 | 18 Si1153 Data Sheet User to Sensor Communication 5.4.2 HW_ID I2C Address = 0x01; Contains the Hardware information. BITS4:0 = Filter, LED & Module code BITS7:5 = Silicon HW rev (Steps with silicon mask change) Part Number Features BITS4:0 code Si1153-AA00 -- 0x00 Si1153-AA09 940 nm filter 0x01 Si1153-AAX9 Module with 940 nm filter & LED 0x02 5.4.3 REV_ID I2C Address = 0x02; Contains the product revision, in a 0xMN format where "M" is the major rev and "N" the minor rev. 5.4.4 INFO0 I2C Address = 3; Contains 0 after a hard reset or a RESET Command. 5.4.5 INFO1 I2C Address = 4; Contains 0 after a hard reset or a RESET Command. 5.4.6 HOSTIN0 Bit 7 Name I2C Address HOSTIN0 0x0A 6 5 4 3 Name HOSTIN0 Type R/W Reset 0 Bit Name 7:0 HOSTIN0 2 1 0 Function This Register is the Input to the Sensor and Output of the Host. Contain 0 after a hard reset or a RESET Command. 5.4.7 COMMAND I2C Address = 0x0B; Contains 0 after a hard reset or a RESET Command. silabs.com | Building a more connected world. Rev. 1.1 | 19 Si1153 Data Sheet User to Sensor Communication 5.4.8 IRQENABLE I2C Address = 0x0F; Contains 0 after a hard reset or a RESET Command. 5.4.9 RESPONSE1 I2C Address = 0x10; Bit 7 6 5 4 3 Name RESPONSE1[7:0] Type R Reset 0 0 0 0 0 2 1 0 0 0 0 Bit Name Function 7:0 RESPONSE1[7:0] The sensor mirrors the data byte written to the parameter table here for the user to verify the write was successful. A parameter read command results in the byte read being available here for the host. silabs.com | Building a more connected world. Rev. 1.1 | 20 Si1153 Data Sheet User to Sensor Communication 5.4.10 RESPONSE0 I2C Address = 0x11; Bit 7 6 5 4 Name RUNNING SUSPEND SLEEP CMD_ERR Type R R R R R R R R Reset N/A N/A N/A 0 1 1 1 1 Bit Name 7 RUNNING Indicator of MCU state. 6 SUSPEND Indicator of MCU state. 5 SLEEP Indicator of MCU state. 4 CMD_ERR 3 2 1 0 CMD_CTR[4:0] Function It is cleared by a hardware reset (power up) or a RESET command or a RESET_CMD_CTR. It is set by a bad command. E.g., an attempt to write beyond the parameter table. If it is set, the CMMND_CTR field is the error code. 3:0 CMMND_CTR IF CMD_ERR = 0 A counter that increments on every GOOD command (successful I2C Command Register write and sensor execution of the command). It is reset to 0 by the RESET_CMD_CTR command. It is set to 0b1111 on Power Up or a RESET command. This is how a user can detect a fresh SW reset or a power up event. IF CMD_ERR = 1 Code Meaning 0x10 Invalid command. 0x11 Parameter access to an invalid location. 0x12 Saturation of the ADC or overflow of accumulation. 0x13 Output buffer overflow--this can happen when Burst mode is enabled and configured for greater than 26 bytes of output. The RESPONSE0 register will show "RUNNING" immediately after reset and then "SLEEP" after initialization is complete. silabs.com | Building a more connected world. Rev. 1.1 | 21 Si1153 Data Sheet User to Sensor Communication 5.4.11 IRQ_STATUS I2C Address = 0x12; Bit 7 6 5 4 3 2 1 0 Name -- IRQ5 IRQ4 IRQ3 IRQ2 IRQ1 IRQ0 Type RSVD CR CR CR CR CR CR 0 0 0 0 0 0 Reset Bit Name Function 7:6 UNUSED 5 IRQ5 Enables an IRQ for channel 5 result being ready. 4 IRQ4 Enables an IRQ for channel 4 result being ready. 3 IRQ3 Enables an IRQ for channel 3 result being ready. 2 IRQ2 Enables an IRQ for channel 2 result being ready. 1 IRQ1 Enables an IRQ for channel 1 result being ready 0 IRQ0 Enables an IRQ for channel 0 result being ready. Unused. Read = 00b; Write = Don't Care. 5.4.12 HOSTOUTx This section covers the twenty-six I2C Host Output Registers. These registers are the output of the sensor and input to the host. Bit Name I2C Address HOSTOUT0 0x13 to to HOSTOUT25 0x2C 7 6 5 4 Name HOSTOUTx Type R Reset 0 0 Bit Name 7:0 HOSTOUTx 0 0 3 2 1 0 0 0 0 0 Function These registers are the output of the MCU and input to the host. The results of the CHAN_LIST enabled "active channel" readings are located sequentially in this table. Each channel may use 2 or 3 bytes depending on the setup. The validity of the various channel outputs located in this table is determined by other factors. Data is valid when an IRQ status says that it is and remains valid until another reading happens. This is why it is imperative to service the interrupt before the next measurement cycle begins (Autonomous Mode), unless forced mode is used. silabs.com | Building a more connected world. Rev. 1.1 | 22 Si1153 Data Sheet Measurement: Principle of Operation 6. Measurement: Principle of Operation Operation is based on the concept of channels. Channels are essentially tasks that have been setup by the user. To setup these channels, the channel specific areas of the parameter table need to be loaded with the correct information as well as the global area of this table. The channels' specific areas are described below, including: * ADC gain * The photodiode selected * The counter selected to time * How often to make a measurement * The format of the output (16 vs. 24 bits) * And other areas The global area includes global information that affect all tasks, such as: * The list of channels that are enabled. * The setup of the two counters that can be used by the channels. * The three light thresholds that can be selected from by the channels. The list of channels, CHAN_LIST, in the global area determines what operations are run and how the results are packed in the output fields. The packing of the result data in the output fields is totally determined by the enabled channels as they are packed sequentially from the lowest enabled channel to the highest in the output field (I2C space- HOSTOUT0 to HOSTOUT25). The amount of space used by each channel is determined by the 16 vs. 24 bit selection made in the channel setup. Although space in the output buffer is reserved by the CHAN_LIST, the data validity is determined by the IRQ_STATUS register in Autonomous Mode and by elapsed time in Forced Mode. In Burst Mode, a subset of Autonomous Mode, all the expected data is valid. 6.1 Output Field Utilization In all modes, the CHAN_LIST configuration determines how the data is stacked in the 26 byte output field. It is done on a first-come first-served basis, with the enabled lower channels taking up the lower addresses. When burst is enabled, the channel arrangement is just repeated to higher and higher addresses. See the example below. silabs.com | Building a more connected world. Rev. 1.1 | 23 Si1153 Data Sheet Measurement: Principle of Operation 0 1 0 1 1 1 X X Global Section of Parameter Table Channel Specific Section of Parameter Table CHAN_LIST Output mode Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Chan 0 Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 X X 16 24 16 16 24 16 X X I2C Register I2C Addresss HOSTOUT0 13 HOSTOUT1 14 Channel 1 Result: Middle Significant Byte HOSTOUT2 15 Channel 1 Result: Least Significant Byte HOSTOUT3 16 Channel 3 Result: Most Significant Byte HOSTOUT4 17 Channel 3 Result: Least Significant Byte HOSTOUT5 13 Channel 4 Result: Most Significant Byte Content Channel 1 Result: Most Significant Byte HOSTOUT6 14 Channel 4 Result: Middle Significant Byte HOSTOUT7 1A Channel 4 Result: Least Significant Byte HOSTOUT8 1B Channel 5 Result: Most Significant Byte HOSTOUT9 1C Channel 5 Result: Least Significant Byte HOSTOUT10 1D Unused HOSTOUT11 1E Unused HOSTOUT12 1F Unused HOSTOUT13 20 Unused HOSTOUT14 21 Unused HOSTOUT15 22 Unused HOSTOUT16 23 Unused HOSTOUT17 24 Unused HOSTOUT18 25 Unused HOSTOUT19 26 Unused HOSTOUT20 27 Unused HOSTOUT21 28 Unused HOSTOUT22 29 Unused HOSTOUT23 2A Unused HOSTOUT24 2B Unused HOSTOUT25 2C Unused Packing of of these four channels in the output table is determined by the four enabled channels in the CHANNEL list above. This is independent of the IRQ_ENABLE and IRQ_STATUS Figure 6.1. Output Table Data Packing silabs.com | Building a more connected world. Rev. 1.1 | 24 Si1153 Data Sheet Measurement: Principle of Operation 6.2 Autonomous and Forced Modes In Autonomous Mode, the user uses the timer fields in both the global and channels specific areas in order to set up the timing for repeated measurements. The user then sends the command to start these autonomous measurements repeatedly. When each channel's timer is tripped, the measurement for that channel is started. When the channel measurement completes, it is signaled by the IRQ_STATUS bits and by an interrupt (if the interrupt is enabled). After that signal, the sensor restarts the channel timer and waits for it to trip and signal the next measurement. The host must read the data before the next reading is generated, or risk losing the reading or getting garbage data to sample smearing (reading data in the midst of it changing). In Forced Mode, all measurements enabled in the CHAN_LIST start as a result of a FORCE command and are only done once. If there are multiple channels enabled, then the measurements are done back-to-back starting with the lower number channel.The completion signaling is the same as for autonomous, the IRQ_STATUS and interrupt if it is enabled. The logical difference is that all the enabled channels are always shown as simultaneously ready in the IRQ_STATUS, whereas in Autonomous Mode this is not true. FORCE command only works on measurements which do not have a measurement counter selected in MEASCONFIGx. silabs.com | Building a more connected world. Rev. 1.1 | 25 Si1153 Data Sheet Measurement: Principle of Operation Global Section of Parameter Table CHAN_LIST 0 1 0 1 1 1 X X Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Chan 0 Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 X X Channel Specific Section of Parameter Table I2C SPACE Output mode IRQ_STATUS 16 24 16 16 24 16 X X Value Bit Meaning 0 0 0 1 0 1 X X Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Chan 0 Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 X X I2C Register I2C Addresss HOSTOUT0 13 Channel 1 Result: Most Significant Byte HOSTOUT1 14 Channel 1 Result: Middle Significant Byte HOSTOUT2 15 Channel 1 Result: Least Significant Byte HOSTOUT3 16 Channel 3 Result: Most Significant Byte HOSTOUT4 17 Channel 3 Result: Least Significant Byte HOSTOUT5 13 Channel 4 Result: Most Significant Byte HOSTOUT6 14 Channel 4 Result: Middle Significant Byte HOSTOUT7 1A Channel 4 Result: Least Significant Byte HOSTOUT8 1B Channel 5 Result: Most Significant Byte Channel 5 Result: Least Significant Byte Content HOSTOUT9 1C HOSTOUT10 1D Unused HOSTOUT11 1E Unused HOSTOUT12 1F Unused HOSTOUT13 20 Unused HOSTOUT14 21 Unused HOSTOUT15 22 Unused HOSTOUT16 23 Unused HOSTOUT17 24 Unused HOSTOUT18 25 Unused HOSTOUT19 26 Unused HOSTOUT20 27 Unused HOSTOUT21 28 Unused HOSTOUT22 29 Unused HOSTOUT23 2A Unused HOSTOUT24 2B Unused HOSTOUT25 2C Unused The IRQ_STATUS bits signal which of the possible fields are updated with new information. All other fields should be considered invalid and possibly containing wrong transitory information. This is despite the reserved space in the output table for the readings that have not yest happened. Figure 6.2. IRQ_STATUS Shows Which Output Fields Have Valid Data silabs.com | Building a more connected world. Rev. 1.1 | 26 Si1153 Data Sheet Measurement: Principle of Operation 6.3 Burst Mode Burst Mode is always used in Autonomous Mode. The Burst Mode is enabled by the BURST register's bit 7. The burst register is in the global area of the parameter table. Bits 6:0 of the register define the number of readings to be made. All channels set up in the CHAN_LIST operate in this mode and they operate in unison governed by the MEASRATE register in the parameter table. The individual channel MEASCONFIGx.COUNTER_INDEX [1:0] value is ignored. The burst is started by the START command and may be paused by the PAUSE command. All measurements enabled in the CHAN_LIST are done as a quick set then repeated after the delay determined by the MEASRATE register. The number of repeats are set by the BURST register. The measurements called for by the enabled channels are done without an intervening delay, starting with the lower number channel and ending with the highest channel number. The burst will proceed until it is complete or until the output buffer is full, after which an interrupt may be generated if enabled and the IRQ_STATUS bit(s) associated with all the channels in the CHAN_LIST will be set. The user has the time period until the next set of reads are finished to read back the data in the output field. The output data will be stacked in the 26 bytes output data field and will be sequential. For example, if the CHAN_LIST enables channels X, Y, and Z, then the data will be found in the output buffer as multiple sets: X1, Y1, Z1, X2, Y2, Z2... The fields X, Y, and Z are packed efficiently and are not necessarily the same length since they can be a mix of 16 and 24 bit values. silabs.com | Building a more connected world. Rev. 1.1 | 27 Si1153 Data Sheet Measurement: Principle of Operation I2C SPACE IRQ_STATUS When Done Value 0 1 0 1 1 1 X X I2C Register Reading Set 1 Reading Set 1 Bit Channel Specific Section of Parameter Table CHAN_LIST Output mode Meaning Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 I2C Addresss Global Section of Parameter Table 0 1 0 1 1 1 X X Chan 0 Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 X X Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Chan 0 Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 X X Since The CHAN_LIST shows 4 active channels we see two sets of readings stacked one after another. Content HOSTOUT0 13 Channel 1 Result: Most Significant Byte HOSTOUT1 14 Channel 1 Result: Middle Significant Byte HOSTOUT2 15 Channel 1 Result: Least Significant Byte HOSTOUT3 16 Channel 3 Result: Most Significant Byte HOSTOUT4 17 Channel 3 Result: Least Significant Byte HOSTOUT5 13 Channel 4 Result: Most Significant Byte HOSTOUT6 14 Channel 4 Result: Middle Significant Byte HOSTOUT7 1A Channel 4 Result: Least Significant Byte HOSTOUT8 1B Channel 5 Result: Most Significant Byte HOSTOUT9 1C Channel 5 Result: Least Significant Byte HOSTOUT10 1D Channel 1 Result: Most Significant Byte HOSTOUT11 1E Channel 1 Result: Middle Significant Byte HOSTOUT12 1F Channel 1 Result: Least Significant Byte HOSTOUT13 20 Channel 3 Result: Most Significant Byte HOSTOUT14 21 Channel 3 Result: Least Significant Byte HOSTOUT15 22 Channel 4 Result: Most Significant Byte HOSTOUT16 23 Channel 4 Result: Middle Significant Byte HOSTOUT17 24 Channel 4 Result: Least Significant Byte HOSTOUT18 25 Channel 5 Result: Most Significant Byte HOSTOUT19 26 Channel 5 Result: Least Significant Byte HOSTOUT20 27 Unused HOSTOUT21 28 Unused HOSTOUT22 29 Unused HOSTOUT23 2A Unused HOSTOUT24 2B Unused HOSTOUT25 2C Unused 16 24 16 16 24 16 X X In burst mode the I2C HOSTOUT locations are updated simultaneously when the burst is done. Only then will the IRQ_STATUS field be updates and an int generated (if the correct IRQ_ENABLE bit(s) is set). Figure 6.3. Burst Mode Example of Two Sets of Readings silabs.com | Building a more connected world. Rev. 1.1 | 28 Si1153 Data Sheet Measurement: Principle of Operation 6.4 Interrupt Operation The INT output pin is asserted by the sensor when an enabled channel in the CHAN_LIST (which has the corresponding bit in the RESET register) has finished. In Burst Mode, the interrupt is delayed until the number of readings is reached or the buffer is full. When the host reads the IRQ_STATUS register to learn which source generated the interrupt, the IRQ_STATUS register is cleared automatically. The most efficient method of extracting measurements from the Si1153 is an I2C Burst Read beginning at the IRQ_STATUS register. 6.5 Timing of Channel Measurements The timing of measurements has two aspects: 1. The length of time to take a measurement. 2. How frequently the measurement is taken. The amount of time to take the measurement is controlled by factors like HW_GAIN (which is really the integration time), SW_GAIN, and the decimation rate setting. Note: Each measurement is composed of two measurement times. In an ALS measurement, two measurements are always taken and added together. In a proximity measurement, two measurements are always taken, one without the LED light and one with the LED light. The difference is then created by subtraction. See the timing diagram below for an example of ALS and proximity measurement timing. silabs.com | Building a more connected world. Rev. 1.1 | 29 Si1153 Data Sheet Measurement: Principle of Operation Figure 6.4. Example of Measurement Timing silabs.com | Building a more connected world. Rev. 1.1 | 30 Si1153 Data Sheet Parameter Table 7. Parameter Table Table 7.1. Parameter Table Address Name 0x00 I2C_ADDR I2C Address (Temp) 0x01 CHAN_LIST Channel List 0x02 ADCCONFIG0 Channel 0 Setup 0x03 ADCSENS0 0x04 ADCPOST0 0x05 MEASCONFIG0 0x06 ADCCONFIG1 0x07 ADCSENS1 0x08 ADCPOST1 0x09 MEASCONFIG1 0x0A ADCCONFIG2 0x0B ADCSENS2 0x0C ADCPOST2 0x0D MEASCONFIG2 0x0E ADCCONFIG3 0x0F ADCSENS3 0x10 ADCPOST3 0x11 MEASCONFIG3 0x12 ADCCONFIG4 0x13 ADCSENS4 0x14 ADCPOST4 0x15 MEASCONFIG4 0x16 ADCCONFIG5 0x17 ADCSENS5 0x18 ADCPOST5 0x19 MEASCONFIG5 silabs.com | Building a more connected world. Description Global Area: Affects all Channels Channel Areas: Specific Channel Setup Channel 1 Setup Channel 2 Setup Channel 3 Setup Channel 4 Setup Channel 5 Setup Rev. 1.1 | 31 Si1153 Data Sheet Parameter Table Address Name Description 0x1A MEASRATE_H 0x1B MEASRATE_L 0x1C MEASCOUNT0 0x1D MEASCOUNT1 0x1E MEASCOUNT2 0x25 THRESHOLD0_H 0x26 THRESHOLD0_L 0x27 THRESHOLD1_H 0x28 THRESHOLD1_L 0x29 THRESHOLD2_H 0x2A THRESHOLD2_L 0x2B BURST MEASURE RATE Global Area: Affects all Channels MEASCOUNT THRESHOLD SETUP BURST 7.1 Global Area of the Parameter Table The Global Area represents resources that are shared among the six channels. See the next section for specific channel properties, and for channel-specific parameter setup. Table 7.2. Global Area of the Parameter Table Parameter Parameter Address MEASRATE[1] 0x1A MEASRATE[15:8] MEASRATE[0] 0x1B MEASRATE[7:0] MEASCOUNT0 0x1C MEASCOUNT0[7:0] MEASCOUNT1 0x1D MEASCOUNT1[7:0] MEASCOUNT2 0x1E MEASCOUNT2[7:0] THRESHOLD0[1] 0x25 THRESHOLD0[15:8] THRESHOLD0[0] 0x26 THRESHOLD0[7:0] THRESHOLD1[1] 0x27 THRESHOLD1[15:8] THRESHOLD1[0] 0x28 THRESHOLD1[7:0] THRESHOLD2[1] 0x29 THRESHOLD2[15:8] THRESHOLD2[0] 0x2A THRESHOLD2[7:0] BURST 0x2B BURST[7:0] CHAN_LIST 0x01 CHAN_LIST[5:0] silabs.com | Building a more connected world. Main Measurement Rate Counter Governs how much time between measurement groups. One count represents an 800 s time period. Three Measurement Rate extension counters available for setting the rate. Each of 6 channel setups selected which of these counters to use via the MEASCONFIG::COUNTER_INDEX[1:0] bits: THRESHOLD0 One of these three (or none) us Chosen by MEASCONFIGx.THRESH_SEL[1:0] THRESHOLD1 THRESHOLD2 Bit 7 is Burst Enable while BURST_COUNT[6:0] are the count The six least significant bits enable the 6 possible channels. Rev. 1.1 | 32 Si1153 Data Sheet Parameter Table 7.2 Channel Specific Setup Areas of the Parameter Table Below is the summary of the four-byte channel-specific area in the parameter table. There are six copies in the table corresponding to up to six tasks/channels assigned to the sensor. They are located between addresses 0x02 and 0x18 hex. Table 7.3. Channel Specific Setup Areas of the Parameter Table 7 ADCCONFIGx RSRVD ADCSENSx HSIG ADCPOSTx RSRVD MEASCONFIGx 6 5 4 3 DECIM_RATE[1:0] COUNTER_INDEX[1:0] 1 0 ADCMUX[4:0] SW_GAIN[2:0] 24BIT_OUT 2 HW_GAIN[3:0] POSTSHIFT[2:0] LED_TRIM[1:0] UNUSED BANK_SEL LED2 En. THRESH_SEL[1:0] LED3 En. LED1 En. The following figure illustrates how to use the channel-specific registers in the parameter table above. silabs.com | Building a more connected world. Rev. 1.1 | 33 Si1153 Data Sheet Parameter Table Figure 7.1. THRESH_SEL, COUNTER_INDEX Fields in Each Channel Specific Register Area Points to Global Area Register THRESHOLDx and MEASCOUNTx (Respectively) Note: In the figure above, the counter selected (1, 2, or 3) defines the number of 800 s periods to have between readings when the channel runs. The threshold selected (0, 1, or 2) defines the threshold used. silabs.com | Building a more connected world. Rev. 1.1 | 34 Si1153 Data Sheet Parameter Table 7.2.1 ADCCONFIGx Parameter Addresses: 0x02, 0x06, 0x0A, 0x0E, 0x12, 0x16 Bit 7 Name Reserved Reset 0 6 5 4 3 2 DECIM_RATE[1:0] 0 1 0 0 0 ADCMUX[4:0] 0 0 0 0 Bit Name Function 7 RESERVED Must remain at 0. 6:5 DECIM_RATE[1:0] Selects Decimations rate of A/Ds. This setting affects the number of clocks used per measurements. Decimation rate is an A/D optimization parameter. The most common decimation value is 0 for a 1024 clocks and 48.8 s min measurement time. Consult the related application notes for more details. Increasing the reading time by using more clocks does not cause the ADC count to be larger. Value No of 21 MHz Clocks Measurement time at HW_GAIN[3:0] = 0 Measurement time at HW_GAIN[3:0] = n Usage Note: All measurements are repeated 2X internally for ADC offset cancellation purposes. The times below represent the integration time for one of these measurement pairs. 4:0 ADCMUX[4:0] 0 1024 48.8 s 48.8*(2**n) s Normal 1 2048 97.6 s 97.6*(2**n) s Useful for longer short measurement times 2 4096 195 s 195*(2**n) s Useful for longer short measurement times 3 512 24.4 s 24.4*(2**n) s Useful for very short measurement times The ADC Mux selects which photodiode(s) are connected to the ADCs for measurement. See Photodiode Section for more information regarding the location of the photodiodes. ADCMUX[4:0] Optical Functions Operation 0 0 0 0 0 Small IR D1b 0 0 0 0 1 Medium IR D1b + D2b 0 0 0 1 0 Large IR D1b + D2b + D3b + D4b 0 1 0 1 1 White D1 0 1 1 0 1 Large White D1 + D4 silabs.com | Building a more connected world. Comments Rev. 1.1 | 35 Si1153 Data Sheet Parameter Table 7.2.2 ADCSENSx Parameter Addresses: 0x03, 0x07, 0x0B, 0x0F, 0x13, 0x17 Bit 7 Name HSIG Reset 0 Bit 6 5 4 3 2 SW_GAIN[2:0] 0 Name 0 1 0 HW_GAIN[2:0] 0 0 0 0 0 Function 7 HSIG This is the Ranging bit for the A/D. Normal gain at 0 and High range (sensitivity is divided by 14.5) when set to 1. 6:4 SW_GAIN[2:0] Causes an internal accumulation of samples with no pause between readings when in FORCED Mode. In Autonomous mode the the accumulation happens at the measurement rate selected. The calculations are accumulated in 24 bits and an optional shift is applied later. See ADCPOSTx.ADC_MISC[1:0] 3:0 HW_GAIN[3:0] silabs.com | Building a more connected world. Value Number of Measurements 0 1 1 2 2 4 3 8 4 16 5 32 6 64 7 128 Value Nominal Measurement time for 512 clocks 0 24.4 s 1 48.8 s 2 97.5 s ...... ...... 10 25 ms 11 50 ms 12 to 15 unused Rev. 1.1 | 36 Si1153 Data Sheet Parameter Table 7.2.3 ADCPOSTx Parameter Addresses: 0x04, 0x08, 0x0C, 0x10, 0x14, 0x18 Bit 7 6 5 Name Reserved 24BIT_OUT Reset 0 0 4 3 POSTSHIFT[2:0] 0 0 0 Name 7 RESERVED Must be set to 0 6 24BIT_OUT Determines the size of the fields in the output registers. POSTSHIFT[2:0] 2 UNUSED 1:0 THRESH_EN [1:0] 1 UNUSED Bit 5:3 2 0 0 THRESH_EN[1:0] 0 0 Function Value Bits/Result Output 0 16 Unsigned integer 1 24 Signed Integer The number of bits to shift right after SW accumulation. Allows the results of many additions not to overflow the output. Especially useful when the output is in 16 bit mode. Value Operation 0 Do not use THRESHOLDs 1 Interrupt when the measurement is larger than the THRESHOLD0 Global Parameters 2 Interrupt when the measurement is larger than the THRESHOLD1 Global Parameters 3 Interrupt when the measurement is larger than the THRESHOLD2 Global Parameters silabs.com | Building a more connected world. Rev. 1.1 | 37 Si1153 Data Sheet Parameter Table 7.2.4 MEASCONFIGx Parameter Addresses: 0x05, 0x0A, 0x0D, 0x11, 0x15, 0x19 Bit Name Reset Bit 7:6 7 6 COUNTER_INDEX[1:0] 0 0 5 4 LED_TRIM[1:0] 0 3 2 1 0 BANK_SEL LED2_EN LED3_EN LED1_EN 0 0 0 0 0 Name Function COUNTER_INDEX[1:0] Selects which of the three counters (MEASCOUNTx) in the global parameter list is in use by this channel. These counters control the period/frequency of measurements. When the channel uses the COUNTER_INDEX[1:0] to select a MEASCOUNTk register in the parameter table, then the time between measurements for this channel is = 800 us * MEASRATE * MEASCOUNTk. A value of zero in MEASRATE will prevent autonomous mode from working. Similarly a zero in MEASCOUNTk will prevent the autonomous mode from working for the concerned channel Value 5:4 3 LED_TRIM[1:0] BANK_SEL Results 0 Measurement not be performed except in BURST or Forced modes 1 Selects MEASCOUNT0 2 Selects MEASCOUNT1 3 Selects MEASCOUNT2 Value Results 0 Nominal LED Currents 1 UNDEFINED 2 LED Currents Increased by 9% 3 LED Currents decreased by 10% Value LED Current Registers Selected in Global Register Area 0 LED1_A, LED2_A, LED3_A 1 LED1_B, LED2_B, LED3_B 2 LED2_EN One value enables the LED 1 LED3_EN One value enables the LED 0 LED1_EN One value enables the LED silabs.com | Building a more connected world. Rev. 1.1 | 38 Si1153 Data Sheet Parameter Table 7.3 Photodiode Selection The ADCCONFIGx.ADCMUX [4:0] Register controls the photodiode selection. Figure 7.2. Photodiode Locations silabs.com | Building a more connected world. Rev. 1.1 | 39 Si1153 Data Sheet Electrical Specifications 8. Electrical Specifications Table 8.1. Recommended Operating Conditions Parameter VDD Supply Voltage VDD OFF Supply Voltage Symbol Condition VDD VDD_OFF Min Typ Max Unit 1.62 -- 3.6 V 1.0 V 50 mVpp OFF mode -0.3 VDD = 3.3 V -- -- T -40 25 85 C SCL, SDA, Input High Logic Voltage I2CVIH VDD x 0.7 -- VDD V SCL, SDA Input Low Logic I2CVIL 0 -- VDD x 0.3 V 25 -- -- ms 5.5 V VDD Supply Ripple Voltage 1 kHz - 10 MHz Operating Temperature Voltage Start-Up Time LED Supply Voltage VDD above 1.62 V VLED Table 8.2. Electrical Performance Characteristics Parameter Symbol Condition1 Min Typ Max Unit Isb No ADC Conversions -- 125 -- nA -- 1.25 -- A -- 0.550 -- mA -- 0.525 -- mA IDD Standby Mode (sleep) No I2C Activity VDD = 1.8 V Isb No ADC Conversions No I2C Activity VDD = 3.3 V IDD Suspend Mode Isus Autonomous Operation (RTC On) ADC conversion in Progress No I2C Activity VDD = 1.8 V Isus Autonomous Operation (RTC On) ADC conversion in Progress No I2C Activity VDD = 3.3 V silabs.com | Building a more connected world. Rev. 1.1 | 40 Si1153 Data Sheet Electrical Specifications Parameter I active, but not measuring Symbol Condition1 I active Responding to commands, Preparing and calculating results of readings. Min Typ Max Unit 4.25 -- mA 4.5 -- mA -- 1 A VDD = 1.8 V I active Responding to commands, Preparing and calculating results of readings. VDD = 3.3 V VDD = 3.3 V INT, SCL, SDA -1 Leakage Current Processing Time per Measurement (During this time the current is I Active) tprocess ALS or Prox A/D startup time per measurement (During this time the current is I Suspend) tadstart ALS or Prox -- 48.8 -- s 525 nm, Internal -- 15.2 -- units -- 15.2 -- units SCL, SDA VOL -- -- VDD * 0.2 V INT VOL -- -- 0.4 V Ratio of readings with HSIG=0 and HSIG=1 for the shallow PD. 155 s ADCMUX=11, ADC_GAIN=0 Ratio of readings with HSIG=0 and HSIG=1 for the deep PD. 940 nm ADCMUX=0, ADC_GAIN=0 Notes: 1. Unless specifically stated in the Condition column, electrical data assumes ambient light levels < 1 klx. 2. Guaranteed by design and characterization. silabs.com | Building a more connected world. Rev. 1.1 | 41 Si1153 Data Sheet Electrical Specifications Table 8.3. Optical Performance Characteristics: Si1153-AA00 Parameter Symbol Condition Min Typ Max Unit 460 nm (blue) -- 190 -- 525 nm (green) -- 160 -- ADC Counts /(W/m2) ADCMUX=11 625 nm (red) -- 100 -- DECIM=0 850 nm (IR) -- 30 ADC_RANGE=0 940 nm (IR) -- 10 -- 460 nm (blue) -- 380 -- 525 nm (green) -- 320 -- ADCMUX=13 625 nm (red) -- 200 -- DECIM=0 850 nm (IR) -- 60 -- ADC_GAIN = 0 940 nm (IR) -- 20 -- 460 nm (blue) -- 90 -- 525 nm (green) -- 260 -- 625 nm (red) -- 510 -- 850 nm (IR) -- 690 -- 940 nm (IR) -- 490 -- 460 nm (blue) -- 190 -- 525 nm (green) -- 520 -- 625 nm (red) -- 1000 -- 850 nm (IR) -- 1280 -- 940 nm (IR) -- 860 -- White minus Dark Shallow Photodiode Response HSIG=0 Dual White minus Dual Dark Photodiode Response ADC Counts /(W/m2) HSIG=0 Deep minus Dark Photodiode Response ADCMUX=0 DECIM=0 ADC_GAIN =0 ADC Counts /(W/m2) HSIG=0 Dual Deep Photodiode minus Dual Dark Photodiode Response ADCMUX=1 DECIM=0 ADC Counts /(W/m2) ADC_GAIN =0 HSIG=0 silabs.com | Building a more connected world. Rev. 1.1 | 42 Si1153 Data Sheet Electrical Specifications Table 8.4. Optical Performance Characteristics: Si1153-AA09 Parameter Symbol Condition Min Typ Max Unit 460 nm (blue) -- 0 -- 525 nm (green) -- 0 -- ADC Counts /(W/m2) ADCMUX=11 625 nm (red) -- 0 -- DECIM=0 850 nm (IR) -- 0 ADC_RANGE=0 940 nm (IR) -- 10 -- 460 nm (blue) -- 0 -- 525 nm (green) -- 0 -- ADCMUX=13 625 nm (red) -- 10 -- DECIM=0 850 nm (IR) -- 0 -- ADC_GAIN = 0 940 nm (IR) -- 20 -- 460 nm (blue) -- 0 -- 525 nm (green) -- 0 -- 625 nm (red) -- 10 -- 850 nm (IR) -- 40 -- 940 nm (IR) -- 410 -- 460 nm (blue) -- 0 -- 525 nm (green) -- 0 -- 625 nm (red) -- 10 -- 850 nm (IR) -- 80 -- 940 nm (IR) -- 710 -- White minus Dark Shallow Photodiode Response HSIG=0 Dual White minus Dual Dark Photodiode Response ADC Counts /(W/m2) HSIG=0 Deep minus Dark Photodiode Response ADCMUX=0 DECIM=0 ADC_GAIN =0 ADC Counts /(W/m2) HSIG=0 Dual Deep Photodiode minus Dual Dark Photodiode Response ADCMUX=1 DECIM=0 ADC Counts /(W/m2) ADC_GAIN =0 HSIG=0 silabs.com | Building a more connected world. Rev. 1.1 | 43 Si1153 Data Sheet Electrical Specifications Table 8.5. I2C Timing Specifications Parameter Symbol Min Typ Max Unit Clock Frequency fSCL -- -- 400 KHz Clock Pulse Width Low tLOW 1.3 -- -- s Clock Pulse Width High tHIGH 0.6 -- -- s Rise Time tR 20 -- 300 ns Fall Time tF 20 * -- 300 ns (VDD / 5.5) Start Condition Hold Time tHD:STA 0.6 -- -- s Start Condition Setup Time tSU:STA 0.6 -- -- s Input Data Setup Time tSU:DAT 100 -- -- ns Data Hold Time tHD:DAT 0 -- -- ns Output Data Valid Time tVD:DAT -- -- 0.9 s Stop Setup Time tSU:STO 0.6 -- -- s Bus Free Time tBUF 1.3 -- -- s Suppressed Pulse Width tSP -- -- 40 ns Bus Capacitance Cb -- -- 400 pF silabs.com | Building a more connected world. Rev. 1.1 | 44 Si1153 Data Sheet Electrical Specifications Table 8.6. LED Optical Characteristics Parameter Symbol Test Condition Min Typ Max Unit Forward voltage Vf1 If = 10 A 0.8 -- -- V Forward voltage Vf2 If = 50 mA -- 1.4 1.8 V Reverse current Ir Vr = 10 V -- -- 5.0 A Peak wavelength p If = 50 mA 925 940 955 nm Spectral half-width If = 50 mA -- 30 -- nm Radiant flux Po If = 50 mA 10 -- -- mW Radiant Intensity Ie If = 50 mA 17 23 30 mW/sr Half Angle -- 25 -- C Note: 1. All specifications measured at 25 C. Table 8.7. Absolute Maximum Ratings Parameter Min Typ Max Unit VDD Supply Voltage -0.3 -- 4 V Operating Temperature -40 -- 85 C Storage Temperature -65 -- 85 C at VDD = 0 V, TA < 85 C -0.5 -- 3.6 V Human Body Model -- -- 2 kV Machine Model -- -- 225 V Charged-Device Model -- -- 2 kV INT, SCL, SDA Voltage ESD Rating silabs.com | Building a more connected world. Condition Rev. 1.1 | 45 Si1153 Data Sheet Electrical Specifications Table 8.8. Typical LED Current vs. LED Code Order No. LED Code Current 0 0x00 5.5 1 0x08 11 2 0x10 17 3 0x18 22 4 0x20 28 5 0x28 33 6 0x30 39 7 0x38 44 8 0x12 50 9 0x21 55 10 0x29 66 11 0x31 77 12 0x22 83 13 0x39 88 14 0x2A 100 15 0x23 111 16 0x32 116 17 0x3A 133 18 0x24 138 19 0x33 155 20 0x2C 166 21 0x3B 177 22 0x34 194 23 0x2D 199 24 0x3C 221 25 0x35 232 26 0x3D 265 27 0x36 271 28 0x3E 310 29 0x3F 354 Note: 1. At trim bit = 0. silabs.com | Building a more connected world. Rev. 1.1 | 46 Si1153 Data Sheet Electrical Specifications Figure 8.1. Typical LED Currents as a Function of LED Code and the Trim Bit Note: In the figure above, the LED configuration happens in the Global Area registers, LED[1,2,3]_[A,B], and in the MEASCONFIGx register of the channel-specific registers. Figure 8.2. ADC Out as a Function of Distance Note: The above graph is created under the following conditions: (LED I = 16.6 mA, t = 24.4 s, Range = low). Grey 18% reflector. Dual Section photodiode. LED beam 1/2 power is at 30 C. Output is 5 mW total. silabs.com | Building a more connected world. Rev. 1.1 | 47 Si1153 Data Sheet Electrical Specifications Figure 8.3. Si115-AA9X LED Radiant Intensity vs. Angle (Indicative) Figure 8.4. Si115-AA9X LED Radiant Intensity vs. Forward Current (Indicative) silabs.com | Building a more connected world. Rev. 1.1 | 48 Si1153 Data Sheet Electrical Specifications Figure 8.5. Si1153-AA00 Shallow and Deep Photodiode Spectral Response (Indicative) Figure 8.6. Typical Angular Sensitivity of the Photodiodes (%) silabs.com | Building a more connected world. Rev. 1.1 | 49 Si1153 Data Sheet Pin Descriptions 9. Pin Descriptions 9.1 DFN Pin Description Figure 9.1. 10-Pin DFN Table 9.1. Pin Descriptions Pin Name Type Description 1 SDA Bidirectional I2C Data. 2 SCL Input I2C Clock. 3 VDD Power Power Supply. Voltage source. 4 INT Bidirectional Interrupt Output. Open-drain interrupt output pin. Must be at logic level high during power-up sequence to enable low power operation. 5 DNC Do Not Connect. This pin is electrically connected to an internal Si1153 node. It should remain unconnected. 6 AD / LED2 Bidirectional LED2 output. It is sensed during startup. Pull up to VDD with 47 k Resistor for default I2C address (0x53). Pull down with 47 k Resistor to select alternate I2C address (0c52) and do not use it as an LED driver in that case. 7 LED3 Bidirectional LED3 output. Always connect to VDD through a pull-up resistor. Connect to an LED cathode if that output is used. Must be at logic level high during power-up sequence to allow normal operation. 8 GND Power Ground. Reference voltage. 9 LED1 Output Connect to VDD. Connect to VDD through a pull-up resistor when not in use. 10 DNC Do Not Connect. This pin is electrically connected to an internal Si1153 node. It should remain unconnected. silabs.com | Building a more connected world. Rev. 1.1 | 50 Si1153 Data Sheet Pin Descriptions 9.2 Module Pin Description Figure 9.2. 2 x 2 mm QFN Table 9.2. Pin Descriptions Pin Name 1 DNC Type Description Do Not Connect. This pin is electrically connected to an internal Si1153 node. It should remain unconnected. 2 SDA Bidirectional I2C Data. 3 SCL Input I2C Clock. 4 VDD Power Power Supply. Voltage source. 5 INT Bidirectional Interrupt Output. Open-drain interrupt output pin. Must be at logic level high during power-up sequence to enable low power operation. 6 AD / LED2 Bidirectional LED2 output. It is sensed during startup. Pull up to VDD with 47 k Resistor for default I2C address (0x53). Pull down with 47 k Resistor to select alternate I2C address (0c52) and do not use it as an LED driver in that case. 7 LED3 Bidirectional LED3 output. Always connect to VDD through a pull-up resistor. Connect to an LED cathode if that output is used. Must be at logic level high during power-up sequence to allow normal operation. 8 GND Power Ground. Reference voltage. 9 LED1 Output Connect to VDD. Connect to VDD through a pull-up resistor when not in use. 10 LEDA silabs.com | Building a more connected world. LED Anode Supply. Connect to VLED. Rev. 1.1 | 51 Si1153 Data Sheet Modules Outline 10. Modules Outline 10.1 10-Pin 2x2 mm DFN DFN Package Diagram Dimensions illustrates the package details for the Si1153 DFN package lists the values for the dimensions shown in the illustration. Figure 10.1. DFN Package Diagram Dimensions Table 10.1. Package Diagram Dimensions Dimension Min Nom Max A 0.55 0.65 0.75 b 0.20 0.25 0.30 D 2.00 BSC. e 0.50 BSC. E 2.00 BSC. L 0.30 0.35 aaa 0.10 bbb 0.10 ccc 0.08 ddd 0.10 0.40 Notes: 1. All dimensions shown are in millimeters (mm). 2. Dimensioning and Tolerance per ANSI Y14.5M-1994. silabs.com | Building a more connected world. Rev. 1.1 | 52 Si1153 Data Sheet Modules Outline 10.2 10-Pin LGA Module The figure below illustrates the package details for the Si1153 DFN package while the table lists the values for the dimensions shown in the illustration. Figure 10.2. DFN Package Diagram Dimensions silabs.com | Building a more connected world. Rev. 1.1 | 53 Si1153 Data Sheet Modules Outline Table 10.2. 10-Pin LGA Module Package Diagram Dimensions Dimension Min Nom Max A 1.10 1.20 1.30 A1 0.28 0.30 0.32 b 0.55 0.60 0.65 D 4.90 BSC D1 4.00 BSC e 1.00 BSC E 2.85 BSC E1 1.95 BSC f 1.56 BSC g 1.44 BSC H1 0.98 1.03 1.08 H2 1.19 1.24 1.29 L 0.55 0.60 0.65 y 3 REF aaa 0.10 bbb 0.10 ccc 0.08 ddd 0.10 eee 0.10 fff 0.10 Notes: 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and tolerancing per ANSI Y14.5M-1994. 3. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components. silabs.com | Building a more connected world. Rev. 1.1 | 54 Si1153 Data Sheet Land Patterns 11. Land Patterns 11.1 2x2 mm DFN Land Pattern See the figure and table below for the suggested 2 x 2 mm DFN PCB land pattern. Figure 11.1. 2 x 2 mm DFN PCB Land Pattern Table 11.1. Land Pattern Dimensions Dimension mm C1 1.90 C2 1.90 E 0.50 X 0.30 Y 0.80 Notes: General 1. All dimensions shown are in millimeters (mm). 2. This Land Pattern Design is based on the IPC-7351 guidelines. 3. All dimensions shown are at Maximum Material Condition (MMC). Least Material Condition (LMC) is calculated based on a Fabrication Allowance of 0.05 mm. Solder Mask Design 4. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 mm minimum, all the way around the pad. Stencil Design 5. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release. 6. The stencil thickness should be 0.125 mm (5 mils). 7. The ratio of stencil aperture to land pad size should be 1:1 for all pads. Card Assembly 8. A No-Clean, Type-3 solder paste is recommended. 9. The recommended card reflow profile is per the JEDEC/IPC J-STD-020D specification for Small Body Components. silabs.com | Building a more connected world. Rev. 1.1 | 55 Si1153 Data Sheet Land Patterns 11.2 10-Pin LGA Module Figure 11.2. 10-Pin LGA Module Land Pattern Table 11.2. Land Pattern Dimensions Dimension mm C 2.20 E 1.00 X 1.15 Y 0.65 Notes: General 1. All dimensions shown are in millimeters (mm). 2. This Land Pattern Design is based on the IPC-7351 guidelines. 3. All dimensions shown are at Maximum Material Condition (MMC). Least Material Condition (LMC) is calculated based on a Fabrication Allowance of 0.05 mm. Solder Mask Design 4. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 mm minimum, all the way around the pad. Stencil Design 5. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release. 6. The stencil thickness should be 0.125 mm (5 mils). 7. The ratio of stencil aperture to land pad size should be 1:1 for all pads. Card Assembly 8. A No-Clean, Type-3 solder paste is recommended. 9. The recommended card reflow profile is per the JEDEC/IPC J-STD-020D specification for Small Body Components. silabs.com | Building a more connected world. Rev. 1.1 | 56 Si1153 Data Sheet Document Change List 12. Document Change List 12.1 Revision 0.9 December 4, 2015 * Initial release. 12.2 Revision 1.0 September 29, 2016 * Updated Register in Table 8.2 Electrical Performance Characteristics on page 40 from Reset to IRQENABLE. * Swapped position on LED2_EN and LED_3 EN. * Added Max VLED voltage to 5.5 V. 12.3 Revision 1.1 October 5, 2017 * Added OPN Si1153-AA09-AMR. silabs.com | Building a more connected world. Rev. 1.1 | 57 Table of Contents 1. Feature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.1 Ambient Light Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Proximity Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 Host Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4. Operational Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 Off Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.2 Initialization Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.3 Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.4 Forced Conversion Mode . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.5 Automated Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . .11 5. User to Sensor Communication . . . . . . . . . . . . . . . . . . . . . . . 12 . 5.1 Basic I2C Operation . . . . . . . . . . . . . . . . .12 5.2 Relationship Between I2C Registers and Parameter Table . . . . . . . . . . . . . . .13 5.3 I2C Command Register Operation . . . . . . . . . . . . . . . . . . 5.3.1 Accessing the Parameter Table (PARAM_QUERY & PARAM_SET Commands) 5.3.2 Sensor Operation Initiation Commands . . . . . . . . . . . . . . 5.3.3 RESET_CMD_CTR Command . . . . . . . . . . . . . . . . . 5.3.4 RESET Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 .17 .17 .17 .17 5.4 I2C Register Summary 5.4.1 PART_ID . . 5.4.2 HW_ID . . . 5.4.3 REV_ID . . . 5.4.4 INFO0 . . . 5.4.5 INFO1 . . . 5.4.6 HOSTIN0 . . 5.4.7 COMMAND . 5.4.8 IRQENABLE . 5.4.9 RESPONSE1 . 5.4.10 RESPONSE0 5.4.11 IRQ_STATUS 5.4.12 HOSTOUTx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 .18 .19 .19 .19 .19 .19 .19 .20 .20 .21 .22 .22 6. Measurement: Principle of Operation . . . . . . . . . . . . . . . . . . . . . 23 . . . . . . . . . . . . . 6.1 Output Field Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 6.2 Autonomous and Forced Modes. . . . . . . . . . . . . . . . . . . . . . . .25 6.3 Burst Mode . . . . . . . . . . . . . . . . . . . . . . . .27 Table of Contents 58 . . . . . . . . . . . . 6.4 Interrupt Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 6.5 Timing of Channel Measurements . . . . . . . . . . . . . . . . . . . . . . .29 7. Parameter Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7.1 Global Area of the Parameter Table . . . . . . . . . . . . . . . . .32 7.2 Channel Specific Setup Areas of the Parameter Table 7.2.1 ADCCONFIGx . . . . . . . . . . . 7.2.2 ADCSENSx . . . . . . . . . . . . 7.2.3 ADCPOSTx . . . . . . . . . . . . 7.2.4 MEASCONFIGx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 .35 .36 .37 .38 7.3 Photodiode Selection . . . . . . . . . . . . . . . . .39 8. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 40 9. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 9.1 DFN Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 9.2 Module Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . .51 10. Modules Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 10.1 10-Pin 2x2 mm DFN . . . . . . . . . . . . . . . . . . . . . . . . . . .52 10.2 10-Pin LGA Module . . . . . . . . . . . . . . . . . . . . . . . . . .53 11. Land Patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 . 11.1 2x2 mm DFN Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . .55 11.2 10-Pin LGA Module . . . . . . . . . . . . . . . . . . . . . . . .56 12. Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . 57 . . . 12.1 Revision 0.9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 12.2 Revision 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 12.3 Revision 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 Table of Contents 59 Smart. Connected. Energy-Friendly. Products Quality www.silabs.com/products www.silabs.com/quality Support and Community community.silabs.com Disclaimer Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Labs reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Labs shall have no liability for the consequences of use of the information supplied herein. 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