MCP23S17 E/SP SPI I/O Expander PDIP-28
Pinout
One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.
- GPA0–GPA71–8Type · Signal
- VSS9Type · Ground
- VDD10Type · Power
- NC11Type · Control
- INTB12Type · Signal
- INTA13Type · Signal
- GPB0–GPB714–21Type · Signal
- CS22Type · SPI
- SCK23Type · SPI
- SI24Type · Signal
- SO25Type · Signal
- A0–A226–28Type · Control
| Pin | Position | Type |
|---|---|---|
| GPA0–GPA7 | 1–8 | Signal |
| VSS | 9 | Ground |
| VDD | 10 | Power |
| NC | 11 | Control |
| INTB | 12 | Signal |
| INTA | 13 | Signal |
| GPB0–GPB7 | 14–21 | Signal |
| CS | 22 | SPI |
| SCK | 23 | SPI |
| SI | 24 | Signal |
| SO | 25 | Signal |
| A0–A2 | 26–28 | Control |
One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.
Pin details
12 connections- GPA0–GPA71–8Signal
- VSS9Ground
- VDD10Power
- NC11Control
- INTB12Signal
- INTA13Signal
- GPB0–GPB714–21Signal
- CS22SPI
- SCK23SPI
- SI24Signal
- SO25Signal
- A0–A226–28Control
Bare ICs
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