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2.2 Signal Definitions of J1 (25-Pin Male DSUB)
Table 1 lists the different signals connected to J1 on the INA219_Test_Board. This table also identifies
signals connected to pins on J1 that are not used on the INA219_Test_Board.
Table 1. Signal Definition of J1 (25-Pin Male DSUB) on INA219_Test_Board
J1 Pin Signal INA219 Pin
1 NC No connection
2 NC No connection
3 NC No connection
4 NC No connection
5 NC No connection
6 NC No connection
7 NC No connection
8 NC No connection
9 I2C_SCK No connection
10 I2C_SDA2 No connection
11 NC No connection
12 I2C_SCK_ISO I
2
C clock signal (SCL) channel 1; can be
disconnected using a switch
13 I2C_SDA_ISO I
2
C data signal (SDA) channel 1; can be
disconnected using a switch
14 NC No connection
15 NC No connection
16 NC No connection
17 V
DUT
Switched 3V or 5V power. Note that when power is
switched off, the digital I/O is also switched off.
18 V
CC
No connection
19 NC No connection
20 NC No connection
21 GND Common or ground connection for power
22 SPI_SCK No connection
23 SPI_CS1 No connection
24 SPI_DOUT No connection
25 SPI_DIN1 No connection
6
INA219 Evaluation Module SBOU074A–January 2009–Revised February 2010
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