KAmodEXP1: Difference between revisions
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===== Description ===== | ===== Description ===== | ||
KAmodEXP1 module allows easy connection of 8-bit bidirectional I/O port expander to any system with SPI interface | KAmodEXP1 module allows easy connection of 8-bit bidirectional I/O port expander to any system with SPI interface | ||
Revision as of 23:02, 29 October 2024
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Description
KAmodEXP1 module allows easy connection of 8-bit bidirectional I/O port expander to any system with SPI interface
Basic features
- MCP23S08 I/O port expander (Microchip)
- 8 GPIO bidirectional lines * SPI interface (up to 10MHz)
- Configurable SPI address (4 combinations)
- Configurable interrupt output
- 25 mA sink/source capability per I/O * Operating voltage 1,8...5,5VDC
* Kamami standard SPI connector (compatible with most of Kamami evaluation boards)
Standard equipment
| Code | Description |
|---|---|
| KAmodEXP1 |
|
Schematics
Board layout
Connectors
SPI lines (without pull-up resistors!) are available on Con1 and Con2 connectors. Pinouts are shown on figure below.
Expander GPIO lines are available on 10-pin IDC connector. Pinout is shown on figure below.
Address lines
MCP23S08 address lines (A1 and A0) are connected to JP0 and JP1 jumpers. Both address lines have pull-up resistors.
Module connection
KAmodEXP1 is equipped with two connectors Con1 and Con2, that can be used to connect module to KAMAMI evaluation boards with SPI connector (STM32Butterfly, ZL30ARM, ZL15AVR, ZL16AVR, ZL5PIC etc.). For this purpose you can use CAB_HU06-30 cable available at kamami.com.
