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Products - GPL61B1


Working Voltage (V)Max. CPU Speed (MHz)ROM (Byte)RAM (Byte)I/OCOMxSEG OptionBiasDutyAudio ChannelTone Output(CH)Audio Output32K OSC.LVDLVR
2.4~5.5480K496+80168X40 12X40 16X401/4 1/51/8 1/12 1/162-PWMVVV

General Description

GPL61B1, an 8-bit CMOS single chip microprocessor, features RAM, ROM, I/Os, interrupt/wakeup controller, 8-bit PWM audio output, UART and automatic display controller/driver for LCD.  With a dual channel PWM driver, attractive sound effect can be generated easily.  A built-in UART is capable of accelerating data transmission between two chips.  Furthermore, a software controllable standby mode is also built in to reduce power consumption.   Its large ROM size can be used to store both program and audio data (speech duration is approx. 18 seconds at 7KHz sampling rate using 4-bit ADPCM).  GPL61B1 is designed with state-of-the-art technology to fulfill the requirements of LCD applications especially hand-held products.


  • 8-bit processor
    • 496 bytes of SRAM
    • 80K bytes of ROM
    • Max. operating speed: 4.0MHz @ 2.2V - 5.5V
    • CPU clock is software programmable to 1/2, 1/4, 1/8 or 1/16 of R-oscillator clock frequency
    • Key wakeup function
    • 8 interrupt sources
  • Universal asynchronous serial interface
    • Supports bit rate up to 115.2 Kbps
  • Programmable LCD driver
    • Up to 40 segments, up to 16 commons, maximum 640 dots
    • 1/4 or 1/5 bias capability
    • 1/8, 1/12 or 1/16 duty
    • 80 bytes dedicated LCD RAM
    • LCD com/seg driving strength, adjustable to meet the requirement of display quality and current consumption
    • Built-in voltage doubler and voltage regulator to generate VLCD for LCD driver
    • Adjustable 16-level VLCD
  • Power saving SLEEP mode
  • Low voltage detector
    • 2.6V and 2.4V detection
  • Peripherals
    • 16 I/O pins (IOEF3 - 0, IOCD3 – 0, IOAB7-0)
    • Extra two I/O pins (IOEF5 - 4) when UART is not used (mask option)
    • Extra two I/O pins (IOEF7 - 6) when LCD is in 1/8 or 1/12 duty (mask option)
    • 32.768KHz oscillator circuit for real time clock function(Crystal or Internal R-oscillator , mask option)
    • Built-in R-oscillator (only one resistor required) or Internal R-oscillator(mask option)
    • Internal time base generator
    • Two 16-bit reloadable timer/counters
    • 8-bit resolution, 2-channel PWM outputs (able to drive speaker or buzzer directly)
    • Watchdog Timer for reliable operation
  • Wide range of operating voltage:
    • 2.2V - 3.6V
    • 2.6V - 5.5V
  • Low-power consumption

Confirmation Sheet

GPL61B1V11_cm(epdf).pdf   Copy Link.

Data Sheet

GPL61B1V12_ds.pdf   Copy Link.
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