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©
2021
congatec
GmbH
PA70m01
38/45
Note
1.
The LEDs on the conga-PA7 are supplied by +3.3 V with 324 Ohm series resistors. LED terminals can be directly to the X18 pins.
2.
The buttons are edge triggered with 16 ms debouncing and can be directly connected to a tactile switch or OC output.
6.1.2
I2C and Watchdog
The conga-PA7 provides I2C, batlow, and watchdog signals via the feature connector X19 as described in the table below:
Table 27 X19 Pinout
Pin
Default Signal
Assembly Option Description
1
BATLOW#
Battery low input, 10k PU to +3.3V standby, OC or OD output must be used
to drive the signal, active low.
2
+3.3V Standby
+3.3V power output (active in standby/suspend)
3
PM THRM#
PLT RST#
External event signal (thermal event), 10k PU to +3.3V runtime, OC or OD
output must be used to drive the signal, active low.
Assembly option: Platform reset signal output, active low.
4
I2C_CLK
I2C clock output
5
I2C_DAT
I2C data
6
GND
Ground
7
WDTRIG#
SLP S3#
Watchdog trigger input signal, 10k PU to +3.3V runtime, OC or OD output
is recommended to use, active low.
Assembly option: SLP S3 output, active low.
8
WDOUT
SLP S4#
Watchdog output from board controller, 100k PD.
Assembly option: SLP S4 output, active low.
Connector Type
X19: 8x1 pins, 1.25 mm pitch (Molex 53398-0871); Possible Mating Connector: Molex 51021-0800
Note
1. A resettable fuse limits the 3.3V power budget of connector X19 (pin 2) and X20 (pin 10) to a total of 500 mA hold current.
2. The signals are 3.3V compatible.
X19
Pin 1
