A standard 74HC595 shift register is an excellent choice if only output port expansion is required, however it’s sometimes desirable to have inputs as well, which is where a dedicated port expander comes into its own. There are a whole range of port expanders available from virtually every semiconductor manufacturer, however, the MCP23S17 device is particularly popular at the time of writing this article.
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Thread Starter: TimHi, My pic is running at 64mhz and gets things done very quickly. But I need to keep my power consumption to a minimum so I sleep a lot. But I...
towlerg Yesterday, 11:18