Working Voltage | Max.Total Memory Extension (Bytes) | Max. Controllable Memory Number | extension interface (Pin No.) | Max. Extensible I/O Number | Operating Frequency |
---|---|---|---|---|---|
2.2V~5.5V | --- | --- | SPI (4) | 24 I/O | 6MHz@2.2V |
GPBA02A, a newly invented I/O Extender for micro-controller extends I/O pads usage. It equips with a standard SPI (Mode 0) communication-processing block, and combines with 24 I/O ports.
With high-speed bit AND/OR/XOR capability for each bit in internal configuration registers, I/Os??status can be modified within fewer host CPU cycles. These I/Os are provided with strong driver ability to drive LED directly. More details are described as follow.