Products - GPCH8A24A

GPCH8A24A Copy Link.

Working Voltage (V)Max.CPU Speed (MHz)ROM TypeBuilt-in ROM (Byte)RAM (Byte)I/OAudio Output (DAC)H/W MIDI Channel (SPU)CPU CLK OSC. ROSCCPU CLK OSC. X'TALWDTLVRADCSPISIOHigh Sink Current I/O
2.4~5.57.159Mask1024K5123212 bit x 1 Channel8VVVV---8 bit

General Description

The GPCH8A24A embedded with an 8-bit processor, 1M bytes ROM chip, 512 bytes working SRAM, 3 set of 12-bit timers, 32 general I/Os, and 2 set of 12-bit DAC. The microprocessor can implement software based on audio processing, functional control and others. For audio processing, melody and speech can be mixed into one output. The GPCH8A24A implement a high performance SPU voice engine to achieve 8 channel voice with ADPCM/PCM. It operates over a wide voltage range of 2.4V - 5.5V and includes Low Voltage Reset function. In addition, GPCH8A24A provide sleep mode for power savings. It can be awakened up from sleep mode by external interrupt source or by IOA's state change.


  • Working Voltage: 2.4V - 5.5V
  • CPU Speed: 7.159MHz.
  • FOSC = 14.318MHz (2 x CPU clock)
  • ROM Size: 1M bytes
  • RAM Size: 512 bytes. (programmable RAM 384 bytes)
  • Three 12-bit timers/counters, TMA/TMB/TMC (programmable and auto-reloadable)
  • Sleep mode to reduce power
  • Key change wake-up function
  • 10 IRQs & 6 NMI Interrupts
  • Watchdog Function
  • Low Voltage Reset: 2.2V
  • 32 general I/Os, including 8 general/special I/Os (All bits are programmable)
  • 8 bits I/O with high sink current(20mA) for LED application
  • IOA with 1M pull low function to prevent current leakage from error key touch
  • Two 12-bit DAC outputs (D/A output: 4mA/channel)
  • SPU(Sound Processing Unit) engine can output audio data of 15-bit resolution with 12-bit DAC to perform high quality sound
  • IR PWM Output
  • 8-channel SPU engine with ADPCM/PCM wave table
  • Tone color (Speech) with ADPCM algorithm to save memory usage

Data Sheet

GPCH8A24AV12_ds.pdf   Copy Link.

Confirmation Sheet

GPCH8384A-8512A-8768A-8A24AV17_cm.pdf   Copy Link.

Application / Engineering Note

AN0048-GPCH4-8 Driver-16.pdf   Copy Link. AN0129-32768_Crystal_Oscillation_Application_Note-16.pdf
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