PCF8575 16-Bit I2C I/O Expander
Remote 16-bit I2C-bus general purpose parallel input/output expander with interrupt output, offering quasi-bidirectional I/O across two 8-bit ports (P0, P1), the 16-bit sibling of the PCF8574.
Aliase:PCF8575, I2C IO Expander, 16-Bit GPIO Expander
SO-24 Top View
24 Pins
Pin-Tabelle24
| Pin | Signal / Name | Typ | Alternative Funktionen |
|---|---|---|---|
| 1 | A0 | Digital | I2C Address Select Bit 0 |
| 2 | A1 | Digital | I2C Address Select Bit 1 |
| 3 | A2 | Digital | I2C Address Select Bit 2 |
| 4 | P00 | Digital | Port 0 Quasi-Bidirectional I/O Bit 0 |
| 5 | P01 | Digital | Port 0 Quasi-Bidirectional I/O Bit 1 |
| 6 | P02 | Digital | Port 0 Quasi-Bidirectional I/O Bit 2 |
| 7 | P03 | Digital | Port 0 Quasi-Bidirectional I/O Bit 3 |
| 8 | P04 | Digital | Port 0 Quasi-Bidirectional I/O Bit 4 |
| 9 | P05 | Digital | Port 0 Quasi-Bidirectional I/O Bit 5 |
| 10 | P06 | Digital | Port 0 Quasi-Bidirectional I/O Bit 6 |
| 11 | P07 | Digital | Port 0 Quasi-Bidirectional I/O Bit 7 |
| 12 | VSS | Ground | 0V System Ground |
| 13 | P10 | Digital | Port 1 Quasi-Bidirectional I/O Bit 0 |
| 14 | P11 | Digital | Port 1 Quasi-Bidirectional I/O Bit 1 |
| 15 | P12 | Digital | Port 1 Quasi-Bidirectional I/O Bit 2 |
| 16 | P13 | Digital | Port 1 Quasi-Bidirectional I/O Bit 3 |
| 17 | P14 | Digital | Port 1 Quasi-Bidirectional I/O Bit 4 |
| 18 | P15 | Digital | Port 1 Quasi-Bidirectional I/O Bit 5 |
| 19 | P16 | Digital | Port 1 Quasi-Bidirectional I/O Bit 6 |
| 20 | P17 | Digital | Port 1 Quasi-Bidirectional I/O Bit 7 |
| 21 | /INT | Digital | Interrupt Output (Open-Drain, Active-Low on Input State Change) |
| 22 | SCL | Digital | I2C Serial Clock |
| 23 | SDA | Digital | I2C Serial Data |
| 24 | VDD | Power | +2.5V to +5.5V Power Supply |