General Description
The MAX16031 evaluation kit (EV kit) provides a proven
printed-circuit board (PCB) layout that facilitates evalu-
ation of the MAX16031 EEPROM-based system monitor
with nonvolatile fault memory. This EV kit is a fully
assembled and tested surface-mount board.
The EV kit includes an on-board USB-to-JTAG and I2C
interface facilitating communications between the host
PC and the MAX16031. A DAC connected to the moni-
toring inputs and the status LEDs connected to each
programmable output make it easy to evaluate the vari-
ous monitoring functions of the MAX16031.
This EV kit data sheet assumes basic familiarity with the
MAX16031. Refer to the MAX16031/MAX16032 IC data
sheet for more detailed information.
Features
♦USB Interface to Host PC
♦Easy-to-Use GUI Software
♦Facilitates Programming of MAX16031s on
Prototype Boards
♦LEDs Indicate Each Output’s State
♦On-Board DAC Simulates Monitored Voltages
♦Convenient Test Points and Headers for Easy
Evaluation
♦Fully Assembled and Tested
Evaluates: MAX16031
MAX16031 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
DESIGNATION QTY DESCRIPTION
C1, C2, C4,
C100, C108 5
1μF ±10%, 10V X5R ceramic
capacitors (0805)
TDK C2012X5R1A105K
KEMET C0805C105K4PAC
C3, C5, C6 3
0.1μF ±10%, 25V X7R ceramic
capacitors (0805)
TDK C2012X7R1E104K
Taiyo Yuden TMK212B104KT
C7 0 Not installed, capacitor (0805)
C101, C102,
C103 3
0.1μF ±10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
Taiyo Yuden TMK107BJ104KA
C104, C105,
C106, C107 4
18pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H180J
Taiyo Yuden UMK107CG180JZ
C110 1
4.7μF ±20%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J475M
Taiyo Yuden JMK212BJ475MG
C111 1
0.01μF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H103K
Taiyo Yuden UMK107B103KZ
DESIGNATION QTY DESCRIPTION
C112, C113 2
2.2µF ±20%, 10V X5R ceramic
capacitors (0805)
TDK C2012X5R1A225M
Taiyo Yuden LMK212BJ225MG
C114 1
33pF ±5%, 50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H330J
Taiyo Yuden UMK107CG330JZ
EXT PWR 1 Test point, red
F100 1 500mA fast-acting fuse (2405)
GND, REF 2 Test points, black
J1, J2, J4 3 3-pin headers
J3 1 2-pin header
J100 1 2 x 3-pin header
LED1–LED7,
LE D 100–LE D 103 11 Green LEDs (1206)
P100 1 USB_B right-angle connector
P101, P102 0 Not installed
P1 1 5-pin header
P2 1 2 x 5-pin header
P3 1 11-pin header
P4 1 9-pin header
P5 1 4-pin header
Component List
Ordering Information
19-1540; Rev 0; 11/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
+
Denotes lead-free and RoHS-compliant.
PART TYPE
MAX16031EVKIT+ EV Kit
Evaluates: MAX16031
MAX16031 Evaluation Kit
2 _______________________________________________________________________________________
DESIGNATION QTY DESCRIPTION
Q1, Q2 2
npn bipolar transistors
Fairchild MMBT3904
Diodes Inc. MMBT3904-7-F
R1–R7,
R100–R103 11 221 ±1% resistors (0805)
R8–R14, R104 8 10k ±1% resistors (0805)
R23, R112 0 Not installed, resistors
R105, R106 2 33.2 ±1% resistors (0805)
R108, R109, R110 3 4.75k ±1% resistors (0805)
S1, S2, S3 3 8-row DIP switches
U1 1
Maxim EEPROM-based system
monitor
MAX16031ETM+ (48-pin TQFN)
U2 1
Maxim octal 12-bit voltage-output
DAC with serial interface
MAX5306EUE+ (16-pin TSSOP)
U3 1
Maxim precision, low-dropout,
micropower voltage reference
MAX6025AEUR+ (3-pin SOT23)
DESIGNATION QTY DESCRIPTION
U100 1
Maxim dual, low-noise, low-
dropout linear regulator
MAX8882EUTAQ+ (6-pin SOT23)
U101 1
Maxim USB peripheral controller
MAX3420EECJ+ (32-pin LQFP)
U102 1
Maxim microcontroller
MAXQ2000-RAX+ (68-pin QFN-EP*)
Y100 1
12MHz crystal (HCM49)
Citizen HCM49-12.000MABJ-UT
Y101 0 Not installed, 32kHz crystal
Y102 1
20MHz crystal (HCM49)
Citizen HCM49-20.000MABJ-UT
— 5 Shunts
— 1
USB high-speed A-to-B cable,
5ft (1.5m)
— 1 PCB: MAX16031 Evaluation Kit+
Component List (continued)
SUPPLIER PHONE WEBSITE
Diodes, Inc. 805-446-4800 www.diodes.com
Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com
KEMET Corp. 864-963-6300 www.kemet.com
Taiyo Yuden 800-348-2496 www.t-yuden.com
TDK Corp. 847-390-4373 www.component.tdk.com
Component Suppliers
Note: Indicate that you are using the MAX16031 when contacting these component suppliers.
Quick Start
Required Equipment
Before beginning, the following equipment is needed:
• MAX16031 EV kit (includes USB cable)
• A user-supplied PC with a spare USB port
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software.
Procedure
The MAX16031 EV kit is fully assembled and tested.
Follow the steps below to verify board operation:
1) Make sure jumpers J1 and J2 are in the 0 position, J3
is closed, J100 is in the 3.3V position, and J4 is in the
1-2 position. Also ensure that all switches in switch
banks S1, S2, and S3 are all in the ON position.
2) Connect the MAX16031 EV kit to a PC using the
USB cable provided with the EV kit. LED100 will
light indicating that the EV kit has power.
3) Install the EV kit software.
4) Launch MAX16031.exe.
5) Click the I2C radio button in the Connect dialog
box, and make sure Address is 0x18. Press the OK
button.
6) Click the number 0.00 next to DAC Voltage for IN1.
7) In the Set Input Voltage dialog box, enter 1.00 and
press the OK button.
8) Note that the voltage in the chart-recorder view
increases to 1V.
*
EP = Exposed paddle.
Detailed Description of Software
Connecting to the MAX16031 EV Kit
Make sure the EV kit is connected to the PC by the USB
cable. Launch the software and in the Connect dialog
(Figure 1), select the I2C or JTAG radio button and
click OK. If the software is being used without the EV kit
connected, select the Demo (No Hardware Required)
radio button.
The I2C slave address may be specified. The default is
0x18, but other values (depending on the settings of
jumpers J1 and J2) can be used.
Voltages Tab
The Voltages tab (Figure 2) provides a visual indication
of the voltage present on every IN_ input. Each channel
has a settings dialog (accessed by clicking the under-
lined IN_ link), a DAC output voltage setting, settings
for each overvoltage and undervoltage threshold, two
fault flags, and a chart-recorder view.
Evaluates: MAX16031
MAX16031 Evaluation Kit
_______________________________________________________________________________________ 3
Figure 1. Connect Dialog
Figure 2. Voltages Tab
Evaluates: MAX16031
MAX16031 Evaluation Kit
4 _______________________________________________________________________________________
The Settings dialog (Figure 3) can set the IN input-volt-
age range to one of three settings: 1.4V, 2.8V, and
5.6V. To enable channel monitoring, make sure the
Enable Fault Detection checkbox is selected. The
Disable Interrupts and Outputs for group box allows
faults on the primary or secondary thresholds to be
“masked,” which prevents them from triggering an
SMBus™ interrupt or asserting a fault output. The Save
State to EEPROM on group box selects which type of
fault can trigger a nonvolatile fault save operation.
Each IN_ input can be connected to the on-board
MAX5306 DAC using switch bank S1. This allows the
voltage at the IN_ input to be manually controlled through
the EV kit software. Click the link next to DAC Voltage to
set the voltage of the DAC in the 0 to 2.5V range. The
DAC voltage can also be changed by dragging the dot-
ted green line, shown in the chart-recorder view.
To set the primary or secondary overvoltage or under-
voltage thresholds for a particular channel, click the
appropriate underlined number next to that parameter.
The primary thresholds can also be modified by drag-
ging the dotted red lines in the chart-recorder view. The
secondary thresholds can be changed the same way;
both appear as dotted yellow lines.
Two fault flag indicators are associated with each chan-
nel. The upper one corresponds to the primary fault
thresholds; the lower one corresponds with the sec-
ondary fault thresholds. If an undervoltage or overvolt-
age fault occurs, one or both these indicators will turn
red and remain so even after the original fault condition
is removed. To clear a fault indicator, click the indicator
and select Clear Fault or Clear All Faults on the menu
that appears.
Each chart-recorder view shows the voltage on the cor-
responding IN_ input with a solid green line. To zoom in
and zoom out, click the magnifying glass icons in the
upper right of the chart-recorder view. Another way to
zoom in and out is to click and “drag” a selection rec-
tangle. Drag from upper left to lower right to zoom in,
and from lower right to upper left to zoom out.
Two IN inputs can be paired to form a combined differ-
ential input. Click any of the Single Ended links in the
center of the window to pair two inputs together, or to
separate two paired inputs.
Figure 3. Settings Dialog
SMBus is a trademark of Intel Corp.
Evaluates: MAX16031
MAX16031 Evaluation Kit
_______________________________________________________________________________________ 5
Figure 4. Current and Temperature Tab
Current and Temperature Tab
The Current and Temperature tab (Figure 4) provides
a set of chart-recorder views similar to the Voltages
tab. To select the display units for the temperature sen-
sors, click the appropriate setting of the Temperature
Display radio buttons.
Similar to the input channels on the Voltages tab, the
current and the temperature channels each have a set-
tings dialog. Click the title of each channel to display
the settings dialog. To enable channel monitoring,
make sure Enable Fault Detection is selected (Figure
5). The Disable Interrupts and Outputs for group box
allows faults on the primary or secondary thresholds to
be “masked,” which prevents them from triggering an
SMBus interrupt or asserting a fault output. The Save
State to EEPROM on group box controls whether a
fault can trigger a nonvolatile fault save operation.
Each external temperature channel has some additional
items on the settings dialog, shown in Figure 5.
Additional fault mask bits are provided for the diode-
short and diode-open faults, and two controls are pro-
vided to set the temperature offset and gain calibration
parameters. The value provided for gain controls the
current (in µA) of the internal high-current source, while
the offset controls the digital offset value added to the
temperature conversion result (in Celsius).
Output Control Tab
The Output Control tab (Figure 6) facilitates configura-
tion of the programmable outputs.
The MAX16031 has several programmable outputs:
FAULT1, FAULT2, OVERT, RESET, GPIO1, and GPIO2.
The FAULT1 and FAULT2 outputs can be configured to
depend on many combinations of fault conditions for all
voltage, current, and temperature channels that are not
masked. The OVERT output depends on combinations
of temperature-related faults. Finally, the RESET output
depends on a combination of fault conditions for both
voltage and temperature and for a programmable set of
voltage inputs. The RESET output also has a program-
mable timeout, which is the amount of time RESET
remains asserted after all fault conditions are cleared.
GPIO1 and GPIO2 can be used as general-purpose
inputs or outputs (GPIOs), and can also be configured
to act as manual reset inputs or additional fault outputs.
When a GPIO is configured as a fault output, the follow-
ing fault conditions can be monitored:
• Primary undervoltage and overvoltage for one
selectable voltage channel
• One or more of the following: primary overvoltage
for all voltage inputs, secondary over/undervoltage
for all inputs, overtemperature for each sensor, or
secondary overcurrent
• Both of the above options at once
Evaluates: MAX16031
MAX16031 Evaluation Kit
6 _______________________________________________________________________________________
Figure 5. Temperature Settings Dialog
Miscellaneous Tab
Many other configuration options are available in the
Miscellaneous tab (Figure 7): the boot-up delay, the
temperature filter, overcurrent settings, deglitch set-
tings, fault settings, memory lock bits, and the SMBus
alert configuration.
The After-boot timeout setting controls the time delay
from when power is applied, to when monitoring is
enabled. This can prevent a partially powered system
from triggering false fault signals during startup.
The Temp sense filter time constant provides the
ability to filter the temperature sensors to reduce noise.
Overcurrent settings include OC timeout, which con-
trols the amount of time a secondary overcurrent condi-
tion must be present before it triggers a fault, and OC
output pin, which controls whether the OVERC output
latches an overcurrent fault or follows the state of the
primary overcurrent comparator.
Filtering of the voltage-monitoring channels is con-
trolled by the Hysteresis of all thresholds setting,
which sets the voltage difference between the rising
and falling voltage threshold of each fault comparator.
Require 2 faults in a row, when turned on, prevents
any voltage fault from occurring unless the fault condi-
tion is present for two complete ADC conversion cycles
in a row.
Evaluates: MAX16031
MAX16031 Evaluation Kit
_______________________________________________________________________________________ 7
Figure 6. Output Control Tab
Evaluates: MAX16031
The On major fault setting controls what information is
saved to the fault EEPROM during a fault condition.
Save only fault flags means that only the fault flags
are stored to EEPROM during a fault event; Save fault
flags and ADC means that both the fault flags and the
ADC readings for all channels are stored to EEPROM
during a fault event.
Version code provides user access to register 5Eh.
This register does not control any function of the chip,
but can be used to store user-defined data such as a
version number.
The registers and the configuration EEPROM can be
locked with the Configuration setting to prevent unin-
tentional modification of configuration settings. The lock
icon in the lower-left corner of the window also indi-
cates and controls this lock bit.
The fault EEPROM is locked automatically when a fault
condition occurs and must be unlocked before any
subsequent fault will get stored to EEPROM. Unlock it
using the ADC-related EEPROM lock setting.
To enable full SMBus functionality and allow the
SMBALERT output to assert, the SMBALERT# Signal
option must be enabled.
MAX16031 Evaluation Kit
8 _______________________________________________________________________________________
Figure 7. Miscellaneous Tab
Registers Tab
Besides the easy-to-use GUI controls, the MAX16031
can also be configured by directly modifying the regis-
ters and EEPROM. The Registers tab (Figure 8) pro-
vides access to the registers and EEPROM. Modify a
register by clicking the cell under the Value column,
entering the new value, and pressing Enter or clicking
in another cell.
Most configuration registers have a matching EEPROM
location that is copied to the register when the
MAX16031 powers up. The Registers tab places each
pair on the same row. After experimenting with a partic-
ular register configuration, that configuration can be
written to the EEPROM by clicking the Commit
Configuration to EEPROM button.
Evaluates: MAX16031
MAX16031 Evaluation Kit
_______________________________________________________________________________________ 9
Figure 8. Registers Tab
Evaluates: MAX16031
Menu Reference
System
Connect... directs the software to open a connection
with a connected EV kit and brings up the Connect
dialog (Figure 1) to select the connection type. Once
connected, this menu item changes to Disconnect.
Save as SVF… writes the EEPROM configuration to an
SVF file, which is a standard format used by JTAG
device programmers for production programming.
Save Configuration… and Load Configuration…
save and load the register and EEPROM configuration
to a text file.
Polling
On and Off turn register polling on and off. When
polling is on, the controls in all the tabs are periodically
refreshed from the physical registers. If polling is off,
register content can be read from the device by select-
ing Read All Registers.
About
This menu item launches the About dialog, which dis-
plays the software version, whether the EV kit is connect-
ed, and the firmware revision of the USB interface.
SMBus Alert Functionality
When the SMBALERT# signal is enabled using the
option in the Miscellaneous tab, any fault that occurs
will cause this signal to be asserted. When that hap-
pens, the status bar displays SMBALERT# detected.
Click here to send Alert Response Address. Clicking
the status bar item then causes the EV kit hardware to
issue an Alert Response Address command, which
returns the slave address of the SMBus device that trig-
gered the SMBus alert.
Detailed Description of Hardware
The MAX16031 monitors eight voltages, three tempera-
tures, and one current. Seven configurable outputs
indicate fault-status information. Figure 9 provides an
overview of the major features of the EV kit PCB.
MAX16031 Evaluation Kit
10 ______________________________________________________________________________________
P3
R23
LED1–LED7
P4
J1
J2
Q2 Q1
P5
J3
S1
S2
S3
P2
P1
J4
USB
J100
LED100
LED103
LED102
LED101
1-800-737-7600 WWW.MAXIM-IC.COM
MAX16031 EVALUATION KIT+
EXT
PWR
GND
CONNECTED ACTIVITY
EEPROM
POWER
VCC SELECT
EXTERNAL POWER
SUPPLY
(OPTIONAL)
MONITORED INPUTS
CURRENT-SENSE
RESISTOR
(OPTIONAL)
CURRENT-SENSE
BIAS
JTAG
I2CPULLUP
VOLTAGE
SELECT
OUTPUTS
OUTPUT
STATUS
INDICATORS
TEMPERATURE
SENSORS
TEMPERATURE-SENSOR CONNECTIONS
CONNECTS DAC
OUTPUTS TO
MONITORING
INPUTS CONFIGURES
JTAG AND I2C
BUS ROUTING
I2C ADDRESS SELECT
MAX16031
Figure 9. Evaluation Kit PCB Diagram
USB-Host Interface
The MAX16031 EV kit includes a built-in USB-to-
JTAG/I2C host interface. The host interface uses
Maxim’s MAX3420 USB peripheral controller, along
with a MAXQ2000 microcontroller to communicate with
the host PC and generate the I2C/JTAG bus signals.
Three indicators (LED101, LED102, LED103) provide
status information of the host interface. LED101 lights
during EEPROM write operations, LED102 lights during
I2C or JTAG bus activity, and LED103 lights when the
software is communicating to the EV kit.
To facilitate prototype development and programming,
the host interface can be used to interface with a
MAX16031 on another board by turning off switches
1-7 in switch bank S2. This disconnects the on-board
MAX16031 from the JTAG and I2C buses. Connect to
the other board using P1 and P2. The pinout of each
connector is shown in Tables 2 and 3. Note that the I2C
pullup resistors are located on the EV kit.
The on-board MAX16031 can be connected to an
external JTAG or I2C interface by turning switch bank
S3 (switches 1-7) off while keeping switch bank S2
(switches 1-7) on. Connect the external interface to P2
for JTAG or P1 for I2C. The MAX16031 can be com-
pletely disconnected from the on-board USB host inter-
face by using this technique, while providing external
power to EXT PWR (J100 must be in the EXT position),
and disconnecting the on-board DACs by turning off all
the switches in switch bank S1.
Each interface can be disconnected or connected sep-
arately. I2C uses switches 1-3 on both S2 and S3 while
JTAG uses switches 4-7 on both S2 and S3.
Power Source
The MAX16031 IC can be powered from one of three
possible power supplies, controlled by jumper J100. To
power directly from the USB 5V supply, place the
jumper in the 5V position. To power from the on-board
3.3V regulator, place the jumper in the 3.3V position.
When the jumper is in the EXT position, the MAX16031
can be powered from an external power supply con-
nected to the EXT PWR test point. Do not supply a volt-
age higher than 14V.
Serial Interfaces
The MAX16031 has both a JTAG interface and an I2C
serial interface. The slave address of the on-board
MAX16031 can be set using J1 and J2, according to
Table 4.
Voltage Monitoring
The eight voltage monitoring inputs connect to pins on
P3 located on the left side of the board. Switch bank S1
allows each input to be connected to the output of a
DAC, which allows the voltage to be set using the EV kit
software for ease of evaluation. The DAC output voltage
range is limited to 2.5V. Do not attempt to force an
external voltage while the DAC is connected; doing so
could damage the DAC or the external voltage source.
Current Monitoring
The current-sense inputs are connected to pins on
header P3 and can be used in two ways. A small volt-
age source can be applied directly across CS+ and
CS-, which the MAX16031 will measure directly. For this
situation, J3 must be closed, which connects CS+ to
VCC to ensure proper bias. As an alternative, a current-
sense resistor can be soldered in the R23 position and
CS+ and CS- can be connected in series with the
external circuit to be measured.
If an external bias voltage is to be used, remove J3 and
connect the CS+ pin of P3 to the external source. Do
not supply a bias voltage higher than 28V. The current-
sense circuit in the MAX16031 will not function for bias
voltages less than 3V.
Temperature Monitoring
One of the temperature sensors is internal and the
other two are external. Both external temperature sen-
sors are included on the EV kit as Q1 and Q2, which
are diode-connected 2N3904 transistors. These can be
desoldered and replaced if necessary. The connec-
tions are easily accessible through header P5.
Inputs and Outputs
Each output has a separate indicator LED and pullup
resistor, and each signal is brought out to a pin on P4.
An LED will light to indicate that the associated output
has gone to the logic-low state. The LEDs can be dis-
abled by turning off switch 8 in switch bank S2. The
pullup resistors are controlled by J4. To use an external
pullup voltage, connect J4 in the 2-3 position and con-
nect the voltage source to the VPU pin of P4.
GPIO1 and GPIO2 can also function as inputs. If they
are configured as such, connect the external input to
the GPIO1 or GPIO2 pin of P4.
A test point (REF) is provided to confirm the reference
voltage of the MAX16031, which is 1.4V (nominal). Do
not connect loads to this test point.
Evaluates: MAX16031
MAX16031 Evaluation Kit
______________________________________________________________________________________ 11
Evaluates: MAX16031
MAX16031 Evaluation Kit
12 ______________________________________________________________________________________
JUMPER POSITION FUNCTION
5V* MAX16031 powered from 5V USB power
3.3V MAX16031 powered from 3.3V regulator
J100
EXT MAX16031 powered from EXT PWR test point
Open Current-sense amplifier biased externally (CS+ test point)
J3 Closed* Current-sense amplifier biased from MAX16031 VCC
1-2* Output pullup resistors connected to 3.3V
J4 2-3 Output pullup resistors connected to VPU test point
1 Connects IN1 to DAC channel 1 when closed
2 Connects IN2 to DAC channel 2 when closed
3 Connects IN3 to DAC channel 3 when closed
4 Connects IN4 to DAC channel 4 when closed
5 Connects IN5 to DAC channel 5 when closed
6 Connects IN6 to DAC channel 6 when closed
7 Connects IN7 to DAC channel 7 when closed
S1
8 Connects IN8 to DAC channel 8 when closed
1
2
3
Connects P1 (I2C) to on-board MAX16031 when closed
4
5
6
7
Connects P2 (JTAG) to on-board MAX16031 when closed
S2
8 Enables output LEDs when closed
1
2
3
Connects I2C bus of host interface to P1 when closed
4
5
6
7
Connects JTAG bus of host interface to P2 when closed
S3
8 Not used
Table 1. Jumper Function Table (J100, J3, J4, S1, S2, S3)
*
Default position.
Jumper Function Tables
Evaluates: MAX16031
MAX16031 Evaluation Kit
______________________________________________________________________________________ 13
PIN FUNCTION
1 3.3V (output only)
2 SDA
3 Ground
4 SCL
5 SMBALERT#
Table 2. I2C Connector Pinout (P1)
PIN FUNCTION
1 TCK
2 Ground
3 TDO
4 3.3V (output only)
5 TMS
6 —
7 — (Key)
8 —
9 TDI
10 Ground
Table 3. JTAG Connector Pinout (P2)
J1 SHUNT
POSITION
(A1)
J2 SHUNT
POSITION
(A0)
I2C SLAVE
ADDRESS
0* 0* 0011_000 (18h)
0 Z 0011_001 (19h)
0 1 0011_010 (1Ah)
Z 0 0101_001 (29h)
Z Z 0101_010 (2Ah)
Z 1 0101_011 (2Bh)
1 0 1001_100 (4Ch)
1 Z 1001_111 (4Fh)
1 1 1001_110 (4Eh)
Table 4. Jumper Function Table (J1, J2)
*
Default position.
Evaluates: MAX16031
MAX16031 Evaluation Kit
14 ______________________________________________________________________________________
43
Q2
MMBT3904
Q1
MMBT3904
DXN2
44 DXP2
45 DXN1
46 DXP1
48 IN1
1IN2
2IN3
3IN4
9IN5
10 IN6
11 IN7
12 IN8
41 CS-
42
CS-
CS+ CS+
14
GPIO1 15
GPIO2 22
OVERT 23
OVERC 24
FAULT1 25
FAULT2 26
RESET
17
SDA 18
SCL 19
A0 20
A0
A1
A1
28
TCK 29
TDI 33
TDO
27
TMS
21
ALERT
47
N.C.
40
N.C.
39
N.C.
32
N.C.
31
N.C.
35
GND
13
GND
8
GND
30
N.C.
7
N.C.
6
N.C.
5
N.C.
4
N.C.
16
RBP
34
DBP
38
VCC
37
VCC
MAX16031
U1
MAX6025
U3
MAX5306
U2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
S2
EXT SEL
9 10111213141516
87654321
S1
SW DIP-8
R1
221Ω
1%
R2
221Ω
1%
R3
221Ω
1%
R4
221Ω
1%
R5
221Ω
1%
R6
221Ω
1%
R7
221Ω
1%
LED1 LED2 LED3 LED4 LED5 LED6 LED7
R23
RES1
R8
10kΩ
1%
R9
10kΩ
1%
R10
10kΩ
1%
R11
10kΩ
1%
R12
10kΩ
1%
R13
10kΩ
1%
R14
10kΩ
1%
J4
+3.3
VPUSEL
+3.3
+3.3
2
4
6
8
10
1
3
5
7
9
JTAG
P2
54321
P1
I2C
1
2
3
4
1
2
3
4
CON4
P5
1
2
CS-
CS+
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
910
11
10
11
CON11
P3
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
CON9
P4
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
S3
PC SEL
TDO
TDI
TCK
TMS
DIN
LDAC
DCLK
CS
SCL
SDA
ALERT
C3
0.1μF
REF
36
ABP
C4
1μF
VBP
VCC
C2
1μF
C1
1μF
J3
CSBIAS
VCC
16 CS
1SCLK
2DIN
15 DOUT
3LDAC
5
OUT1 6
OUT2 7
OUT3 8
OUT4 9
OUT5 10
OUT6 11
OUT7 12
OUT8
42
REF
13
GND
14
VDD
OUT 1
IN
3
GND
C5
0.1μF
+3.3
+3.3
C7
NP
C6
0.1μF
VBP
J1
A1
A1 J2
A0
A0
12
3
Figure 10. MAX16031 EV Kit Schematic
Evaluates: MAX16031
MAX16031 Evaluation Kit
______________________________________________________________________________________ 15
MAXQ2000-RAX
U102
53
P7.1/RX0/INT15 52
RX0
TX0
P7.0/TX0/INT14 48
P6.5/T0/WKOUT1 47
P6.4/T0B/WKOUT0 46
P6.3/T2/OW_IN 45
P6.2/T2B/OW_OUT 44
P6.1/T1/INT13
41
P5.7/MISO 40
P5.6/SCLK 39
P5.5/MOSI 38
MISO
SCLK
MOSI
SS
P5.4/SS
32
P4.3/TDO 31
P4.2/TMS 30
P4.1/TDI/INT9
36
P5.2/RX1/INT10
63 SEG5/P0.5/INT1
SEG4/P0.4/INT0
62
43
RES
USBINT
P6.0/T1B/INT12
37
P5.3/TX1/INT11
29
P4.0/TCK/INT8 21
SEG31/P3.7/INT7
18
SEG28/P3.4/INT4 17
SEG27/P3.3 16
SEG26/P3.2
19
SEG29/P3.5/INT5
20
TDO Q
TMS Q
TDI Q
TCK Q
EX6
EX3
EX2
EX1
EX4
EX5
TCK Q
TDO Q
TMS Q
TDI Q
RST Q
SEG30/P3.6/INT6
59 SEG1/P0.1
58 SEG0/P0.0
61 SEG3/P0.3
60 SEG2/P0.2
1SEG11/P1.3
SEG10/P1.2
68
65 SEG7/P0.7/INT3
64 SEG6/P0.6/INT2
MAX3420E
U101
30 GPIN1
GPIN0
29
202 D-
21
4
3D+
31 GPIN2
1GPOUT0
GPIN3
32
2GPOUT1
7GPOUT2
8GPOUT3
COM0
2522
SEG33/COM3
SEG32
24
SEG35/COM1
23
SEG34/COM2
2826 35
32KOUT
42
GND
34
32KIN
Y101
32kHz
GND
67 SEG9/P1.1
66 SEG8/P1.0
7SEG17/P2.1
SEG16/P2.0
6
3SEG13/P1.5
2SEG12/P1.4
5SEG15/P1.7
4SEG14/P1.6
13 SEG23/P2.7
SEG22/P2.6
12
15 SEG25/P3.1
SEG24/P3.0
14
9SEG19/P2.3
8SEG18/P2.2
11 SEG21/P2.5
10 SEG20/P2.4
TDI
TDO
TCK
TMS
GND
59
GND
N.C.
19
GND
18
GND
6 2516
N.C.
N.C.
R110
4.75kΩ
1%
R109
4.75kΩ
1%
R108
4.75kΩ
1%
DCLK
DIN
LDAC
CS
SDA
SCL
ALERT
+3.3
+3.3
1
2
3
4
5
6
7
8
9
EX1
10
11
TEST
P101
EX2
EX3
12
13 EX4
EX5
14
15 EX6
16
LED101
LED
R101
221Ω
1%
LED102
LED
R102
221Ω
1%
LED103
LED
R103
221Ω
1%
50
HFXOUT
51
HFXIN
Y102
20MHz
C106
18pF
C107
18pF
+3.3
2
4
6
8
10
1
3
5
7
9
JTAG_MAXQ
P102
EXT PWR
VCCVBUS+3.3
2
4
6
1
3
5
VCC SEL
J100
GND
VLCD
54
VDD
4957
VADJ
55
VLCD1
56
VLCD2
C102
0.1μF
VDDIO
RST Q
27
RESET
33
C103
0.1μF
+2.5
VBUS
+3.3
R105
33.2Ω
1%
R106
33.2Ω
1%
1
VBUS
D-
D+
GND
USB_B
P100 28
N.C.
24
VBCOMP
3
VL
4
VL
23
VCC
22
VCC
R104
10kΩ
+3.3
C101
0.1μF
C100
1μF
F100
500mA
15
GPX
26
XI 27
XO
17
INT 14
MOSI 13
MOSI
USBINT
MISO
MISO 12
6
OUTA 1
OUTB 3
BP
SS 11
SCLK 10
SCLK
SS
RES
RES
R112
OPEN
C114
33pF
C104
18pF
C105
18pF
Y100
12MHz
MAX8882
U100
2
GND
VBUS +2.5 +3.3
4SHDN
IN
5
C110
4.7μFC111
0.01μF
C112
2.2μF
C113
2.2μF
C108
1μF
LED100
R100
221Ω
Figure 11. MAX16031 EV Kit Schematic—USB Interface
Evaluates: MAX16031
MAX16031 Evaluation Kit
16 ______________________________________________________________________________________
Figure 12. MAX16031 EV Kit Component Placement Guide—Component Side
Evaluates: MAX16031
MAX16031 Evaluation Kit
______________________________________________________________________________________ 17
Figure 13. MAX16031 EV Kit PCB Layout—Component Side
Evaluates: MAX16031
MAX16031 Evaluation Kit
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
18
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Figure 14. MAX16031 EV Kit PCB Layout—Solder Side
