16-bit GPIO Module for the Scamp embedded computerDesigned by Udamonic by John Catsoulis in Australia
The GPIO module uses two NXP PCA9554Ds and has an onboard regulator capable of supplying 150 mA for the module. The module has 2x8 bits of GPIO that can user-configured over the I2C bus. Up to fou...Read More…
The GPIO module uses two NXP PCA9554Ds and has an onboard regulator capable of supplying 150 mA for the module.
The module has 2x8 bits of GPIO that can user-configured over the I2C bus. Up to four GPIO modules may be stacked on your Scamp, giving you up to an additional 64-bits of GPIO.
The address selection switch maps the two PCA9554D in pairs to addresses in the range $24 to $27. The table on the PCB indicates switch settings and the corresponding addresses of the PCA9554Ds. Once the GPIO module is attached to your Scamp, use the modules word to scan for its presence. Each module will appear as two addresses in the address table.
The GPIO module is ready to use, just plug it into your Scamp!
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