Texas Instruments TPS3809, User Manual

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Setup and Operation
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6 SPRUI96 – October 2016
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Copyright © 2016, Texas Instruments Incorporated
TPS3813xxxQ1EVM for Processor Voltage Supervisor With Window-
Watchdog User’s Guide
2 Setup and Operation
This section describes the connectors, jumpers, and test points on the EVM as well as how to connect, set
up, and properly use the EVM. This section also includes an example of EVM operation.
2.1 Connector Descriptions
There are several methods and types of I/O connections on the EVM including:
• Test Points: for reset, WDR, WDT, WDI, VDD, and GND connected pins
• Two-Pin Jumpers: for holding the RESETN pin at a different voltage than V
DD
and for using an optional
external capacitor to adjust the watchdog window
• Three-Pin Jumpers: for manually setting WDT and WDR to V
DD
, GND, or for using an external
capacitor for a programmable window
Table 2 lists the test points and functional descriptions. All pins of the device are broken out to test points
on the EVM.
Table 2. Test Points
Test Point
Number
Device
Test Point
Silkscreen Label
Function Description
TP1 TPS3813K33 VDD Voltage Input Supply Voltage/ Voltage Supervisor
Input
TP2 TPS3813K33 VDD1 Voltage Monitoring/ Probing Voltage Probe Point for TPW3813
TP3 TPS3813K33 RESETN Voltage Monitoring/ Probing Active Low Reset Output
TP4 TPS3813K33 GND Voltage Input Supply Ground Connection
TP5 TPS3813K33 WDR1 Voltage Monitoring/ Probing Watchdog Ratio Input (V
DD
or GND)
TP6 TPS3813K33 WDT1 Voltage Monitoring/ Probing Watchdog Delay Input (V
DD
, GND,
or C
ext
)
TP7 TPS3813K33 WDI1 Voltage Monitoring/ Probing Watchdog Input Pin
TP8 Both GND Voltage Monitoring/ Probing Common Ground Connection
TP9 Both GND Voltage Monitoring/ Probing Common Ground Connection
TP10 TPS3813I50 VDD Voltage Input Supply Voltage/ Voltage Supervisor
Input
TP11 TPS3813I50 VDD2 Voltage Monitoring/ Probing Supply Voltage/ Voltage Supervisor
Input
TP12 TPS3813I50 RESETN Voltage Monitoring/ Probing Active Low Reset Output
TP13 TPS3813I50 GND Voltage Input Supply Ground Connection
TP14 TPS3813I50 WDR2 Voltage Monitoring/ Probing Watchdog Ratio Input (V
DD
or GND)
TP15 TPS3813I50 WDT2 Voltage Monitoring/ Probing Watchdog Delay Input (V
DD
, GND,
or C
ext
)
TP16 TPS3813I50 WDI2 Voltage Monitoring/ Probing Watch-Dog Input Pin