PIC18F14K22 microcontroller with 2 x INA228A voltage / shunt to I2C converters
The microcontroller acts as a I2C slave on the DCSWC bus. It is a (software) I2C master for communicating with the INA228A converts.
| Pin | Function | Note |
|---|---|---|
| 1 | VBUS_A | VOLTAGE INPUT A |
| 2 | VIN+_A | SHUNT + INPUT A |
| 3 | VIN-_A | SHUNT - INPUT A |
| 4 | VBUS_A | VOLTAGE INPUT B |
| 5 | VIN+_A | SHUNT + INPUT B |
| 6 | VIN-_A | SHUNT - INPUT B |
| 7 | 5V OUT | 5 VOLT OUTPUT FOR SENSOR EXCITATION |
| 8 | COUNT_A | COUNTER INPUT A |
| 9 | COUNT_B | COUNTER INPUT B |
| 10 | COM | COM |