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Products - GPL811P04A (OTP)*

GPL811P04A (OTP)*

Working Voltage (V)Max. CPU Speed (MHz)ROM (Byte)RAM (Byte)I/OCOMxSEG OptionBiasDuty32K OSC.SPI/UART/RFCWDTLVROperating Temp.
2.2~3.61.832K2432183X60, 4X60, 4X64, 6X60, 8X60, 9X60, 10X60, 11X601/3, 1/41/3, 1/4, 1/6, 1/8, 1/9, 1/10, 1/11ROSC/X'TALv / - / 2-20~70

General Description

GPL811P04A, a special designed CMOS 8-bit microprocessor by Generalplus, offers the best cost/performance ratio in the industry. It combines RAM, one-time programmable (OTP) ROM, I/Os, an interrupt controller, and an automatic display controller/driver in a small device.Its extraordinary features is the capability of operating in low voltage range from 2.2V ~ 3.6V and also operating under low power. This device is capable for many application fields such as low power watch and other LCD related products.


  • Built-in 8-bit processor
  • 2432-byte SRAM
  • 64K-byte OTP ROM(GPL811P08A)
    32K-byte OTP ROM(GPL811P04A)
  • 88 byte DPRAM
  • Built-in 225k/500k/1000k/1800kHz RC oscillator for system operation
  • adjustable CPU clock speed : 1, 1/2, 1/4, 1/8, 1/16 for ROSC
  • Built-in 30.72kHz RC oscillator & 32768 Crystal oscillator circuit for timebase
  • Low standby current, ISTBY < 1uA @3.6V, 25??/li>
  • 22 general I/O pins.
  • PD[5:0](PD[5:3] shared with SEG[57:59]; PD[1:0] shared with 2 buzzers)
  • PC[3:0](shared with SEG[53:56])
  • PA[3:0](shared with SPI SDO/SDI/SCK/CSN pin
  • PE[7:0]
  • Built-in  2 x  RFC function (PD2 used as input, PD[5:3] used as output)
  • Serial Peripheral Interface(SPI)
    • CSN/SCK/SDI/SDO pin shared with PA[0:3]
  • LCD configurations: 11 coms x 60 segs (MAX) , 3x60, 4x60, 5x60, 6x60, 8x60, 9x60, 10x60, 4x64
  • LCD 1/3 ,1/4 bias; 1/3, 1/4, 1/5, 1/6, 1/8, 1/9, 1/10, 1/11 duty
  • One 16-bit reloadable timer/counter(Timer0), one 8-bit reloadable timer/counter(Timer1)
  • Watchdog mode (~2 sec)
  • 9 interrupt sources
    (TMBB, TMBA, 128Hz, 2KHz, Timer0, Timer1, EXT(PD2), SPI, LVD(2.0V/2.2V/2.4V/2.6V))
  • Power down mode
    (wake-up source: key input, TMBB, TMBA, 128Hz, Timer0)
  • Low power consumption:
  • 200u @ 3.6V, FCPU = 225KHz for operating mode
  • 3u@ 3.6V, FCPU = 225KHz for halt mode
  • I stby < 1uA @ 3.0V
  • Built_in internal regulator for LCD operation, 5-level contrast control
  • Built_in Low voltage reset to avoid system runaway at low voltage

Note1: TMBB: 4KHz, 1KHz, 128Hz, 64Hz, 32Hz, 16Hz, 8Hz or 4Hz
Note2: TMBA: 2Hz or 1Hz

Data Sheet

GPL811P08A-811P04AV12_ds.pdf   Copy Link.

Confirmation Sheet

GPL811P0XABV21_cm(epdf).pdf   Copy Link.
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