Products - GPBA02A

General Description

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.

Features

• Operating Voltage
  • Chip operating voltage (VDD): 2.2V – 5.5V
  • I/O operating voltage (VDDIO): 2.2V – 5.5V
• Standard SPI嚗ode 0嚗nterface
  • 4 pins for SPI communication
  • Chip select signal CSB as transmit enable signal
  • Serial clock SCK (max 6MHz) as data synchronization signal for transmitting and receiving
  • Receives command and data from host via MOSI pin
  • Transmits data to host via MISO pin
• 24 I/Os
  • 24 bi-directional I/O lines
  • Users can set the corresponding registers to select pull high/low resistors, or buffer/open-drain outputs.
  • Users can write the corresponding registers to execute high-speed AND/OR/XOR function for each bit in those I/O configuration registers.
• Reset Management
  • Power on reset
  • Software control reset