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MCP23S17-E/SP I/O Expander 28-Pin
$3.95 – $15.55 (AUD)
Consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits (IODIRA/B).
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The MCP23X17-E/SP consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits (IODIRA/B). The data for each input or output is kept in the corresponding input or output register. The polarity of the Input port register can be inverted with the polarity inversion register.
Features
- Cascadable for up to 8 devices on one bus
- 16-bit input/output port expander with interrupt output
- 25mA sink/source capability per I/O
- Supports up to 10 MHz SPI clock speeds
- Polarity Inversion register to configure the polarity of the input port data
- Configurable interrupt output pins
- External reset input
- Low standby current of 1 uA (max)
MCP23S17-E/SP I/O Expander 28-Pin consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as inputs or outputs by writing the I/O configuration bits (IODIRA/B). The data for each input or output is kept in the corresponding input or output register. You can invert the polarity of the Input port register with the polarity inversion register.
The way you hook the chip up to your breadboard will depend on the package you use (8-pin MCP23008 or 16-pin MCP23017). The pinouts are different between the two chips, so check the datasheet carefully first.
The MCP23017 is shown above with two LEDs connected, on GPA0 and GPA1.
- The yellow line is SDA
- The green line is SCL
- The three black lines on top are the address pins
- The brown pin is RESET which you must pull high for the regular operation
- Red is 3.3V
- Black is GND.
Package included: 1 or 5 pack
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Notes:
1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual colour of the item because of different photographing light, angles and display monitors.
| Weight | 0.008 kg |
|---|---|
| Dimensions | 4 × 1.5 × 1.5 cm |
| Pack Qty | 1 Pack, 5 Pack |
Product Applications
Current Product Support
| SKU | Product | Type | Download/View |
|---|---|---|---|
| MCP23S17-E/SP I/O Expander 28-Pin - MCP23017 | Datasheet | Download |
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