Products - GPLB52320A1

GPLB52320A1 Copy Link.

Working Voltage (V)Max. CPU Speed (MHz)ROM (Byte)RAM (Byte)I/OCOMxSEG OptionBiasDutySPU / MIDIAudio OutputGray Level32K OSC.SPI/UARTWDTLVD/LVR
2.4~5.58320K15361632x641/3, 1/4, 1/5, 1/6, 1/71/2 ~ 1/328 ChannelsPWM/DAC4 LevelsROSC/X'TAL√/-√/√

General Description

The GPLB52320A1, an 8-bit CMOS microprocessor, features 1536 bytes working RAM, 320K bytes ROM memory, 16 I/Os, interrupt/wakeup controller, 2 sets of 16-bit timers, SPI interface, 1 set of 12-bit DAC, 1 set of 10-bit PWM, and automatic display controller/driver for mono/4-gray-level LCD.  The GPLB52320A1 contains up to 64 segments and 32 commons, forming a maximum of 2048 dots LCD resolution.  The microprocessor can implement software for audio processing, functional control and others.  In audio processing, melody and speech can be mixed into one output.  The GPLB52320A1 also carries a high performance SPU voice engine to achieve 8-channel voice with ADPCM/PCM data.  It operates over a wide voltage range from 2.4V through 5.5V, plus Low Voltage Reset function to assure system will still function properly when power drops below certain level.  Plus, it features one 10-bit PWM driver and one 12-bit DAC with 8 audio channels to produce attractive sound effects easily.  Its large ROM area can be used to store both program and audio data.  There is a Serial Peripheral Interface (SPI) controller built-in to facilitate the way to communicate with other devices.  Furthermore, a SLEEP (power-down) function is also built in to preserve battery life.  The GPLB52320A1 is designed with state-of-the-art technology to fulfill LCD application needs, especially for hand-held products.


  • 8-bit micro-processor
  • 1536 bytes SRAM
  • 320K bytes ROM
  • Operating voltage: 2.4V ~ 5.5V
  • Max. CPU operating speed:
    • 8.0MHz @ 2.4V with 16MHz X’TAL
    • 8.0MHz @ 2.4V with 16MHz ROSC
  • Programmable CPU clock: /2, /4, /8, /16, /32, /64 and /128 R-oscillator clock frequency
  • Six wake-up sources
  • Nine IRQ & two NMI Interrupts
  • Internal built-in regulator to supply core power (3.3V, for 3-battery application). Also it can turn off internal built-in regulator, and use external 3.6V power to supply core power (for 2-battery application).
  • Programmable LCD driver
  • LCD size table







LCD Dots


Supports from 1/2 duty up to 1/32 duty

512 bytes dedicated LCD RAM

Supports normal type-B & type-C LCD waveform with or without key scan

Built-in voltage regulator to generate VLCD for LCD driver

32-level contrast control (VLCD=2.95V~6.85V)

Power saving SLEEP mode

  • Low Voltage Detector

4-level (2.4V/2.6V/3.0V/3.3V) voltage detector

  • 2V Low Voltage Reset
  • Peripherals
    • Max. 16Por I/O pins (PA[7:0], PB[7:0])
    • Built-in 32.768KHz oscillator circuit for real time clock function (X’tal or R-osc)
    • Built-in R-oscillator for system operating clock (external resistor is required)
    • Internal time base generator
    • Two 16-bit reloadable timer/counters
    • Watchdog timer
    • 12-bit DAC output and 10-bit PWM audio outputs
    • Key scan function
    • SEG[15:0] can be used to send key scan output
    • IR carrier output
    • One SPI serial interface I/O
  • Powerful 8-ch Sound Processing Unit (SPU)
    • Variable tone-color sampling rate: maximum 54KHz@CPU_Clock=7MHz
    • 8-voice polyphony
    • Supports PCM/ADPCM tone-color table

Data Sheet

GPLB52320A1V11_ds.pdf   Copy Link.

Confirmation Sheet

GPLB5XXXXA1V10_cm(epdf).pdf   Copy Link.

Application / Engineering Note

AN0213-VDD higher than VLCD issue application note-16.pdf   Copy Link.
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