|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.