ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 P Power Supply Supervisor With Battery Backup Switch General Description Applications The ASM690A / ASM692A / ASM802L / ASM802M / ASM805L * * * * * * * * offers complete single chip solutions for power supply monitoring and control battery functions in microprocessor systems. Each device implements four functions: Reset control, watchdog monitoring, battery-backup switching and powerfailure monitoring. In addition to microprocessor reset under power-up and power-down conditions, these devices provide battery-backup switching to maintain control in power loss and brown-out situations. Additional monitoring capabilities can provide an early warning of unregulated power supply loss Embedded control systems Portable/Battery operated systems Intelligent instruments Wireless instruments Wireless communication systems PDAs and hand-held equipments P / C power supply monitoring Safety system Typical Operating Circuit Unregulated DC before the voltage regulator drops out. The important features Regulated +5V of these four functions are: * * * 1.6 second watchdog timer to keep microprocessor responsive 4.40V or 4.65V VCC threshold for microprocessor reset at R2 power-up and power-down SPDT (Single-pole, Double-throw) PMOS switch connects backup power to RAM if VCC fails + _ 3.6 V Lithium Battery RESET RESET PFI PFO NMI VBATT WDI I/O LINE VOUT GND GND BUS * VCC VCC 0.1 F R1 ASM690A 1.25V threshold detector for power loss or general purpose voltage monitoring VCC These features are pin-compatible with the industry standard CMOS RAM GND power-supply supervisors. Short-circuit and thermal protection have also been added. The ASM690A / ASM802L / ASM805L generate a reset pulse when the supply voltage drops below Block Diagram 4.65V and the ASM692A / ASM802M generate a reset below 4.40V. The ASM802L / ASM802M have power-fail accuracy to 2%. The ASM805L is the same as the ASM690A except that RESET is provided instead of RESET. VBATT VCC 8 1 Battery-Switchover Circuit 2 Reset Generator |+ RESET (RESET) - 1.25V Two precision supply-voltage monitor options *4.65V (ASM690A / ASM802L / ASM805L) Battery-backup power switch on-chip Watchdog timer: 1.6 second timeout Power failure / low battery detection Short circuit protection and thermal limiting Small 8-pin SO and 8-pin PDIP packages No external components Specified over full temperature range Watchdog Timer 3.5V |+ *4.40V (ASM692A / ASM802M ) * * * * * * * 7 + Features * VOUT WDI 6 + |+ + 0.8V PFI 1.25V |+ 4 + ASM690A, ASM692A, ASM802L, ASM802M, (ASM805L) 3 GND Alliance Semiconductor 2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com Notice: The information in this document is subject to change without notice 5 PFO ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Pin Configuration PDIP/SO VOUT 1 VCC 2 GND 3 PFI 4 ASM690A ASM692A ASM802L ASM802M (ASM805L) 8 VBATT 7 RESET (RESET) 6 WDI 5 PFO Pin Description Pin Number ASM690A / ASM692A ASM802L / ASM802M Name Function ASM805L Voltage supply for RAM. When VCC is above the reset threshold, VOUT connects to 1 1 VOUT VCC through a P-Channel MOS device. If VCC falls below the reset threshold, this output will be connected to the backup supply at VBATT (or VCC, whichever is higher) through the MOS switch to provide continuous power to the CMOS RAM. 2 2 VCC +5V power supply input. 3 3 GND Ground 4 4 PFI Power failure monitor input. PFI is connected to the internal power fail comparator which is referenced to 1.25V. The power fail output (PFO) is active LOW but remains HIGH if PFI is above 1.25V. If this feature is unused, the PFI pin should be connected to GND or VOUT. 5 5 PFO Power-fail output. PFO is active LOW whenever the PFI pin is less than 1.25V. WDI Watchdog input. The WDI input monitors microprocessor activity. An internal timer is reset with each transition of the WDI input. If the WDI is held HIGH or LOW for longer than the watchdog timeout period, typically 1.6 seconds, RESET (or RESET) is asserted for the reset pulse width time, tRS, of 140ms, minimum. 6 6 Active-LOW reset output. When triggered by VCC falling below the reset threshold or by watchdog timer timeout, RESET pulses low for the reset pulse width tRS, typ7 - RESET ically 200ms. It will remain low if VCC is below the reset threshold (4.65V in ASM690A / ASM802L and 4.4V in the ASM692A / ASM802L) and remains low for 200ms after VCC rises above the reset threshold. - 7 RESET 8 8 VBATT Active-HIGH reset output. The inverse of RESET. Auxiliary power or backup-battery input. VBATT should be connected to GND if the function is not used. The input has about 40mV of hysteresis to prevent rapid toggling between VCC and VBATT. P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 2 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Detailed Description Application Information It is important to initialize a microprocessor to a known state Microprocessor Interface in response to specific events that could create code The ASM690 has logic-LOW RESET output while the execution errors and "lock-up". The reset output of these ASM805 has an inverted logic-HIGH RESET output. supervisory circuits send a reset pulse to the microprocessor Microprocessors with bidirectional reset pins can pose a in response to power-up, power-down/power-loss or a problem when the supervisory circuit and the microprocessor watchdog time-out. output pins attempt to go to opposite logic states. The problem can be resolved by placing a 4.7k resistor between RESET/RESET Timing the RESET output and the microprocessor reset pin. This is Power-up reset occurs when a rising VCC reaches the reset threshold, VRT, forcing a reset condition in which the reset shown in Figure 2. Since the series resistor limits drive output is asserted in the appropriate logic state for the buffered. capabilities, the reset signal to other devices should be duration of tRS. The reset pulse width, tRS, is typically around 200ms and is LOW for the ASM690A, ASM692A, ASM802 and HIGH for the ASM805L. Figure 1 shows the reset pin timing. Power-loss or "brown-out" reset occurs when VCC dips below the reset threshold resulting in a reset assertion for the duration of tRS. The reset signal remains asserted as long as VCC is between VRT and 1.1V, the lowest VCC for which these devices can provide a guaranteed logic-low output. To ensure logic inputs connected to the ASM690A / ASM692A/ASM802 RESET pin are in a known state when VCC is under 1.1V, a 100k pull-down resistor at RESET is needed: the logic-high ASM805L will need a pull-up resistor to VCC. Watchdog Timer VBAT=PFI=3V IOUT=0mA ( ) ASM805L Figure 1: RESET/RESET Timing A Watchdog time-out reset occurs when a logic "1" or logic BUF "0" is continuously applied to the WDI pin for more than 1.6 Buffered RESET seconds. After the duration of the reset interval, the watchdog timer starts a new 1.6 second timing interval; the VCC microprocessor must service the watchdog input by changing VCC 4.7K states or by floating the WDI pin before this interval is finished. If the WDI pin is held either HIGH or LOW, a reset pulse will be triggered every 1.8 seconds (the 1.6 second timing interval plus the reset pulse width tRS). Power Supply RESET RESET ASM690A GND GND Bi-directional I/O pin Figure 2: Interfacing with bi-directional microprocessor reset inputs P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 3 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Watchdog Input VBATT As discussed in the Reset section, the Watchdog input is VCC used to monitor microprocessor activity. It can be used to insure that the microprocessor is in a continually responsive state by requiring that the WDI pin be toggled every second. If the WDI pin is not toggled within the 1.6 second window SW1 SW2 (minimum tWD + tRS), a reset pulse will be asserted to return the microprocessor to the initial start-up state. Pulses as ASM690A ASM692A short as 50ns can be applied to the WDI pin. If this feature is not used, the WDI pin should be open circuited or the logic D2 D1 SW3 SW4 ASM805L D3 ASM802L ASM802M placed into a high-impedance state to allow the pin to float. VOUT Backup-Battery Switchover A power loss can be made less severe if the system RAM contents are preserved. This is achieved in the ASM690/692/ Figure 3: Internal device configuration of battery switch-over function 802/805 by switching from the failed VCC to an alternate power source connected at VBATT when VCC is less than the reset threshold voltage (VCC < VRT), and VCC is less than VBATT. The VOUT pin is normally connected to VCC through a 2 PMOS switch but a brown-out or loss of VCC will cause a switchover to VBATT by means of a 20 PMOS switch. Although both conditions (VCC < VRT and VCC <VBATT) must occur for the switchover to VBATT to occur, VOUT will be switched back to VCC when VCC exceeds VRT irrespective of Table 1. Pin Connections in Battery Backup Mode Pin VOUT Connection Connected to VBATT through internal PMOS switch the voltage at VBATT. It should be noted that an internal VBATT device diode (D1 in Figure 3) will be forward biased if VBATT exceeds VCC by more than a diode drop when VCC is PFI Disabled PFO Logic-LOW switched to VOUT. Because of this it is recommended that VBATT be no greater than VRT +0.6V. RESET WDI Condition SW1/SW2 SW3/SW4 VCC > Reset Threshold open closed open closed closed open VCC < Reset Threshold VCC > VBATT VCC < Reset Threshold VCC < VBATT Connected to VOUT Logic-LOW (except on ASM805 where it is HIGH) Watchdog timer disabled During the backup power mode, the internal circuitry of the supervisory circuit draws power from the battery supply. While VCC is still alive, the comparator circuits remain alive and the current drawn by the device is typically 35A. When VCC drops more than 1.1V below VBATT, the internal ASM690A/802A/805L Reset Threshold = 4.65V ASM692A /ASM802M Reset Threshold = 4.4V switchover comparator, the PFI comparator and WDI comparator will shut off, reducing the quiescent current drawn by the IC to less than 1A. P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 4 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Backup Power Sources - Batteries diode-resistor pair clamps the capacitor voltage at one diode Battery voltage selection is important to insure that the drop below VCC. VCC itself should be regulated within 5% of battery does not discharge through the parasitic device diode 5V for the ASM692A/802M or within 10% of 5V for the D1 (see Figure 3) when VCC is less than VBATT and VCC > ASM690A/802L/805L to insure that the storage capacitor VRT. does not achieve an over voltage state. Table 2: Maximum Battery Voltages Note: SuperCapTM is a trademark of Baknor Industries Part Number MAXIMUM Battery Voltage (V) ASM690A 4.80 ASM802L 4.80 ASM805L 4.80 ASM692A 4.55 ASM802M 4.55 +5V To SRAM VOUT VCC D1 VBATT + Although most batteries that meet the requirements of Table 0.1F To P RESET (RESET) ASM692A ASM802M 2 are acceptable, lithium batteries are very effective backup GND source due to their high-energy density and very low selfdischarge rates. Figure 4: Capacitor as a backup power source Battery replacement while Powered Batteries can be replaced even when the device is in a powered state as long as VCC remains above the reset threshold voltage VRT. In the ASM devices, a floating VBATT +5V pin will not cause a powersupply switchover as can occur in some other supervisory circuits. If VBATT is not used, the pin should be grounded. VOUT VCC D1 D2 Backup Power Sources - SuperCapTM VBATT Capacitor storage, with very high values of capacitance, can be used as a back-up power source instead of batteries. SuperCapTM are capacitors with capacities in the fractional 100K + 0.1F RESET (RESET) To SRAM To P ASM692A ASM802M GND farad range. A 0.1 farad SuperCapTM would provide a useful backup power source. Like the battery supply, it is important that the capacitor voltage remain below the maximum voltages shown in Table 2. Although the circuit of Figure 4 shows the most simple way to connect the SuperCapTM, this circuit cannot insure that an over voltage condition will not Figure 5: Capacitor as a backup power source Voltage clamped to 0.5V below VCC occur since the capacitor will ultimately charge up to VCC. To insure that an over voltage condition does not occur, the circuit of Figure 5 is preferred. In this circuit configuration, the P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 5 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Operation without a Backup Power Source Power Fail Hysteresis When operating without a back-up power source, the VBATT A noise margin can be added to the simple monitoring circuit pin should be connected to GND and VOUT should be of Figure 6 by adding positive feedback from the PFO pin. connected to VCC, since power source switchover will not The circuit of Figure 7 adds this positive "latching" effect by occur. Connecting VOUT to VCC eliminates the voltage drop due to the ON-resistance of the PMOS switch. means of an additional resistor R3 connected between PFO and PFI which helps in pulling PFI in the direction of PFO and eliminating an indecision at the trip point. Resistor R3 is normally about 10 times higher in resistance than R2 to keep Power-Fail Comparator The Power Fail feature is an independent voltage monitoring function that can be used for any number of monitoring activities. The PFI function can provide an early sensing of power supply failure by sensing the voltage of the unregulated DC ahead of the regulated supply sensing seen by the backup-battery switchover circuitry. The PFI pin is the hysteresis band reasonable and should be larger than 10k to avoid excessive loading on the PFO pin. The calculations for the correct values of resistors to set the hysteresis thresholds are given in Figure 7. A capacitor can be added to offer additional noise rejection by low-pass filtering. compared to a 1.25V internal reference. If the voltage at the PFI pin is less than this reference voltage, the PFO pin goes VIN +5V low. By sensing the voltage of the raw DC power supply, the microprocessor system can prepare for imminent power-loss, especially if the battery backup supply is not enabled. The VCC R1 ASM690A ASM692A ASM802L ASM802M ASM805L input voltage at the PFI pin results from a simple resistor PFI voltage divider as shown in Figure 6. R2 VIN C1* +5V PFO VCC R1 R3 GND ASM690A ASM692A ASM802L ASM802M ASM805L PFO PFI R2 +5V PFO 0V GND V A B 0V 5R 2 A = -------------------- < 1.25V R +R 1 2 VL VTRIP VH 0V +5V PFO * Optional To P 5R 2 B = -------------------- > 1.25V R1 + R2 1.25 TRIP = ---------------------- R2 ------------------ R 1 + R 2 1.25 V H = ----------------------------------|| R 2 R3 ---------------------------- R 1 + R 2 || R 3 V L - 1.25 5 - 1.25 1.25---------------------- + ------------------- = --------R3 R2 R1 Figure 6: Simple Voltage divider sets PFI trip point Figure 7: Hysterisis Added To PFI Pin P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 6 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Monitoring Capabilities Of The Power-fail Input: Although designed for power supply failure monitoring, the PFI pin can be used for monitoring any voltage condition that +5V can be scaled by means of a resistive divider. An example is ASM690A VCC ASM692A the negative power supply monitor configured in Figure 8. In this case a good negative supply will hold the PFI pin below R1 1.25V and the PFO pin will be at logic "0". As the negative ASM802L ASM802M PFI ASM805L PFO voltage declines, the voltage at the PFI pin will rise until it exceeds 1.25V and the PFO pin will go to logic "1". R2 GND V- V- = VTRIP +5V PFO 0V VTRIP V- 0V 1.25 - V TRIP 5------------------ 1.25- = -----------------------------R1 R2 Figure 8: Using PFI To Monitor Negative Supply Voltage P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 7 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Absolute Maximum Ratings Parameter Min Max Unit VCC -0.3 6.0 V VBATT -0.3 6.0 V All other inputs * -0.3 VCC + 0.3 V Input Current at VCC 200 mA Input Current at VBATT 50 mA Input Current at GND 20 mA Pin Terminal Voltage with Respect to Ground Output Current VOUT Short circuit protected All other inputs 20 mA Rate of Rise: VBATT and VCC 100 V/s Plastic DIP (derate 9mW/C above 70C) 800 mW SO (derate 5.9mW/C above 70C) 500 mW Continuous Power Dissipation Operating Temperature Range (C Devices) 0 70 C Operating Temperature Range (E Devices) -40 85 C Storage Temperature Range -65 160 C 300 C 1 100 KV V Lead Temperature (Soldering, 10 sec) ESD rating HBM MM * The input voltage limits on PFI and WDI may be exceeded if the current is limited to less than 10mA Note: These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 8 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Electrical Characteristics: Unless other wise noted, VCC = 4.75V to 5.5V for the ASM690A / ASM802L / ASM805L and VCC = 4.5V to 5.5V for the ASM692A / ASM802M; VBATT = 2.8V; and TA = TMIN to TMAX. Parameter Symbol Conditions VCC, VBATT Voltage Typ 1.1 Range (Note 1) Supply Current Excluding IOUT Min IS 35 TA = 25C ISUPPLY in Battery VCC = 0V, VBATT = 2.8V Backup Mode (Excluding IOUT) VBATT Standby 5.5V>VCC>VBATT + 0.2V Current (Note 2) TA = 25C Unit 5.5 V 100 A 1.5 A TA = TMIN to TMAX TA = TMIN to TMAX Max 5.0 -0.1 -1.0 0.02 0.02 IOUT = 5mA VCC-0.025 VCC-0.010 IOUT = 50mA VCC-0.25 VCC-0.10 VBATT - 0.1 VBATT - 0.001 V 20 -20 mV 40 mV VOUT Output V VOUT in Battery IOUT=250A, VCC < VBATT - 0.2V Backup Mode Battery Switch Threshold, VCC to VBATT VCC < VRT Power Up Power Down Battery Switch over Hysteresis Reset Threshold VRT ASM690A/802L/805L 4.50 4.65 4.75 ASM692A, ASM802M 4.25 4.40 4.50 ASM802L, TA = 25C, VCC falling 4.55 4.70 ASM802M, TA=25C, VCC falling 4.30 4.45 V Reset Threshold Hysteresis Reset Pulse Width A 40 tRS 140 200 mV 280 ms Notes: 1. If VCC or VBATT is 0V, the other must be greater than 2.0V. 2. Battery charging-current is "-". Battery discharge current is "+". 3. WDI is guaranteed to be in an intermediate level state if WDI is floating and VCC is within the operating voltage range. WDI input impedance is 50 k. WDI is biased to 0.3VCC. P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 9 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Parameter Symbol Conditions ISOURCE = 800A Min Typ 0.4 ASM69_AC, ASM802_C, VCC=1.0V, 0.3 ISINK=50A ASM69_AE, ASM802_E, VCC=1.2V, 0.3 ISINK=100A ASM805LC, ISOURCE=4A, VCC = 1.1V 0.8 ASM805LE, ISOURCE=4A, VCC = 1.2V 0.9 ASM805L, ISOURCE=800A tWD WDI Pulse Width tWP 0.4 1.00 VIL = 0.4V, VIH = 0.8VCC V VCC - 1.5 ASM805L, ISINK=3.2mA Watchdog Timeout Unit VCC - 1.5 ISINK = 3.2mA Reset Output Voltage Max 1.60 2.25 50 WDI = VCC sec ns 50 150 A WDI Input Current WDI = 0V WDI Input Threshold (Note 3) -150 -50 VCC = 5V, Logic LOW A 0.8 VCC = 5V, Logic HIGH 3.5 ASM69_A,ASM805L, VCC = 5V 1.20 1.25 1.30 ASM802_C/E, VCC = 5V 1.225 1.250 1.275 -25 0.01 25 PFI Input Threshold V V PFI Input Current ISOURCE = 800A nA VCC - 1.5 PFO Output Voltage V ISINK = 3.2mA 0.4 Notes: 1. If VCC or VBATT is 0V, the other must be greater than 2.0V. 2. Battery charging-current is "-". Battery discharge current is "+". 3. WDI is guaranteed to be in an intermediate level state if WDI is floating and VCC is within the operating voltage range. WDI input impedance is 50 k. WDI is biased to 0.3VCC. P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 10 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Package Information 8-lead PDIP Package Symbol Dimensions Inches Min Millimeters Max A Min Max 0.210 5.33 A1 0.015 A2 0.115 0.195 2.92 4.95 b 0.014 0.022 0.36 0.56 b2 0.045 0.070 1.14 1.78 C 0.008 0.014 0.20 0.36 D 0.355 0.400 9.02 10.16 E 0.300 0.325 7.62 8.26 E1 0.240 0.280 6.10 7.11 e 0.10 BSC eB L 0.38 2.54 BSC 0.430 0.115 0.150 10.92 2.92 3.81 P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 11 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 8-lead (150-mil) SOIC Package H E D A2 A C A1 D e L B Dimensions Symbol Inches Millimeters Min Max Min Max A1 0.004 0.010 0.10 0.25 A 0.053 0.069 1.35 1.75 A2 0.049 0.059 1.25 1.50 B 0.012 0.020 0.31 0.51 C 0.007 0.010 0.18 0.25 D 0.193 BSC 4.90 BSC E 0.154 BSC 3.91 BSC e 0.050 BSC 1.27 BSC H 0.236 BSC 6.00 BSC L 0.016 0.050 0.41 1.27 0 8 0 8 P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 12 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Ordering Information - Tin - Lead Devices Part Number Reset Threshold (V) Temperature Range (C) Pins-Package Package Marking ASM690ACPA 4.5 TO 4.75 0 TO +70 8-Plastic DIP ASM690ACPA ASM690ACSA 4.5 TO 4.75 0 TO +70 8-SO ASM690ACSA ASM690AEPA 4.5 TO 4.75 -40 TO +85 8-Plastic DIP ASM690AEPA ASM690AESA 4.5 TO 4.75 -40 TO +85 8-SO ASM690AESA ASM692ACPA 4.25 TO 4.50 0 TO +70 8-Plastic DIP ASM692ACPA ASM692ACSA 4.25 TO 4.50 0 TO +70 8-SO ASM692ACSA ASM692AEPA 4.25 TO 4.50 -40 TO +85 8-Plastic DIP ASM692AEPA ASM692AESA 4.25 TO 4.50 -40 TO +85 8-SO ASM692AESA ASM802LCPA 4.5 TO 4.75 0 TO +70 8-Plastic DIP ASM802LCPA ASM802LCSA 4.5 TO 4.75 0 TO +70 8-SO ASM802LCSA ASM802LEPA 4.5 TO 4.75 -40 TO +85 8-Plastic DIP ASM802LEPA ASM802LESA 4.5 TO 4.75 -40 TO +85 8-SO ASM802LESA ASM802MCPA 4.25 TO 4.50 0 TO +70 8-Plastic DIP ASM802MCPA ASM802MCSA 4.25 TO 4.50 0 TO +70 8-SO ASM802MCSA ASM802MEPA 4.25 TO 4.50 -40 TO +85 8-Plastic DIP ASM802MEPA ASM802MESA 4.25 TO 4.50 -40 TO +85 8-SO ASM802MESA ASM805LCPA 4.5 TO 4.75 0 TO +70 8-Plastic DIP ASM805LCPA ASM805LCSA 4.5 TO 4.75 0 TO +70 8-SO ASM805LCSA ASM805LEPA 4.5 TO 4.75 -40 TO +85 8-Plastic DIP ASM805LEPA ASM805LESA 4.5 TO 4.75 -40 TO +85 8-SO ASM805LESA ASM690A ASM692A ASM802L ASM802M ASM805L P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 13 of 15 ASM690A / 692A ASM802L / 802M ASM805L March 2005 rev 1.6 Ordering Information - Lead Free Devices Part Number Reset Threshold (V) Temperature Range (C) Pins-Package Package Marking ASM690ACPAF 4.5 TO 4.75 0 TO +70 8-Plastic DIP ASM690ACPAF ASM690ACSAF 4.5 TO 4.75 0 TO +70 8-SO ASM690ACSAF ASM690AEPAF 4.5 TO 4.75 -40 TO +85 8-Plastic DIP ASM690AEPAF ASM690AESAF 4.5 TO 4.75 -40 TO +85 8-SO ASM690AESAF ASM692ACPAF 4.25 TO 4.50 0 TO +70 8-Plastic DIP ASM692ACPAF ASM692ACSAF 4.25 TO 4.50 0 TO +70 8-SO ASM692ACSAF ASM692AEPAF 4.25 TO 4.50 -40 TO +85 8-Plastic DIP ASM692AEPAF ASM692AESAF 4.25 TO 4.50 -40 TO +85 8-SO ASM692AESAF ASM802LCPAF 4.5 TO 4.75 0 TO +70 8-Plastic DIP ASM802LCPAF ASM802LCSAF 4.5 TO 4.75 0 TO +70 8-SO ASM802LCSAF ASM802LEPAF 4.5 TO 4.75 -40 TO +85 8-Plastic DIP ASM802LEPAF ASM802LESAF 4.5 TO 4.75 -40 TO +85 8-SO ASM802LESAF ASM802MCPAF 4.25 TO 4.50 0 TO +70 8-Plastic DIP ASM802MCPAF ASM802MCSAF 4.25 TO 4.50 0 TO +70 8-SO ASM802MCSAF ASM802MEPAF 4.25 TO 4.50 -40 TO +85 8-Plastic DIP ASM802MEPAF ASM802MESAF 4.25 TO 4.50 -40 TO +85 8-SO ASM802MESAF ASM805LCPAF 4.5 TO 4.75 0 TO +70 8-Plastic DIP ASM805LCPAF ASM805LCSAF 4.5 TO 4.75 0 TO +70 8-SO ASM805LCSAF ASM805LEPAF 4.5 TO 4.75 -40 TO +85 8-Plastic DIP ASM805LEPAF ASM805LESAF 4.5 TO 4.75 -40 TO +85 8-SO ASM805LESAF ASM690A ASM692A ASM802L ASM802M ASM805L Notes: * For parts to be packed in Tape and Reel, add "-T" at the end of the part number. * Alliance Semiconductor's lead free parts are RoHS compliant. P Power Supply Supervisor With Battery Backup Switch Notice: The information in this document is subject to change without notice 14 of 15 March 2005 ASM690A / 692A ASM802L / 802M ASM805L rev 1.6 Alliance Semiconductor Corporation 2575, Augustine Drive, Santa Clara, CA 95054 Tel: 408 - 855 - 4900 Fax: 408 - 855 - 4999 www.alsc.com Copyright (c) Alliance Semiconductor All Rights Reserved Part Number: ASM690A / 692A ASM802L / 802M ASM805L Document Version: 1.6 (c) Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. 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