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MCP23017x-x-ML
16-bit I/O expander, I2C, interrupts, w pull-ups, GPA7/GPB7 output only (https://microchip.my.site.com/s/article/GPA7---GPB7-Cannot-Be-Used-as-Inputs-In-MCP23017), QFN-28
Schematic Symbol
Pin Configuration (29 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | GPB4 | bidirectional |
| 2 | GPB5 | bidirectional |
| 3 | GPB6 | bidirectional |
| 4 | GPB7 | output |
| 5 | V_{DD} | power_in |
| 6 | V_{SS} | power_in |
| 7 | NC | no_connect |
| 8 | SCK | input |
| 9 | SDA | bidirectional |
| 10 | NC | no_connect |
| 11 | A0 | input |
| 12 | A1 | input |
| 13 | A2 | input |
| 14 | ~{RESET} | input |
| 15 | INTB | tri_state |
| 16 | INTA | tri_state |
| 17 | GPA0 | bidirectional |
| 18 | GPA1 | bidirectional |
| 19 | GPA2 | bidirectional |
| 20 | GPA3 | bidirectional |
| 21 | GPA4 | bidirectional |
| 22 | GPA5 | bidirectional |
| 23 | GPA6 | bidirectional |
| 24 | GPA7 | output |
| 25 | GPB0 | bidirectional |
| 26 | GPB1 | bidirectional |
| 27 | GPB2 | bidirectional |
| 28 | GPB3 | bidirectional |
| 29 | EP | passive |
Footprint
ConfirmedPackage_DFN_QFN/QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm
Pad Layout
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Pads (38)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | smd |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |
| 26 | smd |
| 27 | smd |
| 28 | smd |
| 29 | smd |