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Products - GPBA02B


Working VoltagePWMConstant Currentextension interface (Pin No.)Max. Extensible I/O NumberExt. INT I/OOperating Frequency
2.2V~5.5V256 Levels, 8CLK source, 2sets, Inv_PWM2 setsSPI (4)24 I/O4xIN, 1xOUT8MHz@2.2V

General Description

GPBA02B, a newly invented I/O extender for micro-controller extending I/O pads application, equips with a standard SPI (Mode 0) communication-processing block and 24 I/O ports. With high-speed bit operation of AND/OR/XOR 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 driving capability to drive LED directly.  GPBA02B furnishes 16 PWMIO channels, and there are two sets of constant-current sink function dedicated for these PWMIO channels to use.  GPBA02B is fully compatible with GPBA02A.


  • Operating Voltage
    • Chip operating voltage (VDD): 2.0V – 5.5V
    • I/O operating voltage (VDDIO): 2.0V – 5.5V
  • Standard SPI(Mode 0)Interface
    • Four pins for SPI communication
    • Chip Selecting Signal (CSB) as transmitting enable signal
    • Serial clock SCK (max 8MHz) as data synchronization signal for transmitting and receiving data
    • To receive command and data from host via MOSI pin
    • To transmit data to host via MISO pin
  • 24 I/Os
    • 24 bi-directional I/O lines
    • Selecting pull high/low resistors or buffer/open-drain outputs via corresponding registers.
    • To execute high-speed AND/OR/XOR function of each bit in I/O configuration registers through writing to the corresponding registers.
    • 16 PWMIO Output Channels
      • Sixteen 256-step channels, PA[7:0] and PC[7:0]
    • Two sets of constant current sink functions for 16 PWMIO channels
      • Two sets of four-level constant current sink, PA[7:0] and PC[7:0]
    • Four CMOS Inverters
      • PB[0] input with PB[1] CMOS inverting output
      • PB[3] input with PB[2] CMOS inverting output
      • PB[4] input with PB[5] CMOS inverting output
      • PB[7] input with PB[6] CMOS inverting output
    • Four Interrupt Sources
      • Four interrupt sources (PA[3:0])
      • One output interrupt flag (PA[4])
    • Reset Management
      • Power on reset
      • Software control reset

Data Sheet

GPBA02BV13_ds.pdf   Copy Link.
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