Products - GPCD9341A(OTP)

GPCD9341A(OTP) Copy Link.

Working Voltage (V)Max.CPU Speed (MHz)ROM (Byte)RAM (Byte)I/O Audio Output (DAC)H/W MIDI Channel (SPU)S/W Channel (16 bit PCM)CPU CLK OSC. ROSCCPU CLK OSC. X'TALWDTRTC ClockLVRADCSPIPWM IOHigh Sink Current I/O
2.3~5.58.01024K51232181VVVVV-VV8 bit

General Description

The GPCD9341A(OTP) series work with internal 1M bytes OTP ROM, 512 bytes working SRAM, three sets of 12-bit timer, 32 general I/Os with selectable 8+1 channels input and one 14-bit DAC with push-pull amplifier. The microprocessor implements software based on audio processing, functional control and others. For audio processing, melody and speech can be mixed into one output. The GPCD9341A is featured one software channel and a high performance SPU voice engine to play voice with ADPCM/PCM data. It operates over a wide voltage range and includes Low Voltage Reset function. In addition, GPCD9341A features sleep mode for power savings. It can be awakened from sleep mode by interrupt sources or changing IO's state. There is also a Serial Peripheral Interface (SPI) controller built-in GPCD9341A to facilitate communicating with other devices and components.


  • Working Voltage: 2.3V - 5.5V
  • CPU speed: Max. 8MHz
  • FOSC = Max. 16MHz (2 x CPU clock)
  • ROM size: 1M bytes
  • RAM size: Max. 512 bytes
  • Three 12-bit timer/counter, TMA with capture and comparison function, TMB/ TMC with comparison function only
    (Programmable and Auto Reload)
  • Sleep mode to reduce power consumption
  • Key change wake-up function
  • Clock source with ROSC or XTAL (option)
  • IRQs & NMI interrupts
  • Watchdog function (option)
  • 5.5V to 3.3V regulator
  • Low Voltage Reset
  • 32 bit-programmable general I/Os
  • Eight I/Os with high sink current for LED application
  • All general IOs with 1M pull-low function to prevent current leakage from error key touch
  • One 14-bit DAC with push-pull amplifier for direct drive speaker
  • SPU (Sound Processing Unit) engine can output audio data with 14-bit resolution to perform high quality voice/melody
  • IR PWM Output
  • Hardware PWMIO supports four LED outputs with 256-level brightness control
  • Real-time clock
  • 8-channel SPU engine with ADPCM/PCM wavetable
  • One set of 14-bit software channel with noise filter to play high quality sound
  • SPI master interface

Data Sheet

GPCD9341AV11_ds.pdf   Copy Link.

Confirmation Sheet

GPCD9341AV13_cm(epdf).pdf   Copy Link.

Application / Engineering Note

AN0119-IO_High_Pulse_Issue_While_Power-on-16.pdf   Copy Link. AN0129-32768_Crystal_Oscillation_Application_Note-16.pdf AN0147-Speech_Line_32768_Xtal_Oscillation_APN-16.pdf   Copy Link. AN0198-Magic_ID_Design_Guide-16.pdf   Copy Link.
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