描述 Description

GPL87104A, a CMOS 8-bit microprocessor by Generalplus, offers one of the best cost/performance ratio LCD integrated circuits ?in the industry, equipping RAM, ROM, I/Os, an interrupt controller, and an automatic display controller/driver in a small device. ?Its extraordinary features include the capability of operating in low voltage range from 1.2V ~ 3.6V as well as under a low power condition that is suitable for solar cell environment.? It also builds in an internal power switch to select two-way power source automatically and facilitates using solar cell and battery co-operation in applications.? This device is applicable for products such as low power calculator and products requiring either only one solar cell or one battery application, or even two-way power source.

特性 Features

? Built-in 8-bit processor
? 2432-byte SRAM
? 32K-byte ROM(include 2KB test code ROM size)
? 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
? 1000k/1800kHz CPU clock speed can only be used at operation voltage 1.8V~3.6V
? Built-in 30.72kHz RC oscillator & 32768 Crystal oscillator circuit for timebase
? Low Operating Voltage: 1.2 V – 1.8 V@0～70℃??????????????????????????????????
???????????????????? ???1.8 V – 3.6 V@-20～70℃
? Low standby current, ISTBY < 1uA @3.6V, 25℃
? 18 general I/O pins.

? PD[5:0](PD[5:3] are shared with SEG[57:59]; PD[1:0] are shared with 2 buzzers)
? PC[3:0](shared with SEG[53:56])
? PE[7:0]
? Built-in? 2 x? RFC function (PD2 is used as input, PD[5:3] used as output)
? 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
? Watchdog mode (~2 seconds)
? Six interrupt sources
? ?TMBB, TMBA, 128Hz, 2KHz, Timer, EXT(PD2)
? Power down mode
? ?Wake-up sources: key input, TMBB, TMBA,128Hz, Timer
? Built_in power switch for two-way power source

? 15uA @ 3.6V, FCPU = 225KHz for operating mode
? 3 uA @ 3.6V, FCPU = 225KHz for halt mode
? I stby < 1uA @ 1.5V
? Built_in internal regulator for LCD operation, 5-level contrast control
? Built_in internal regulator for system operation
? Built_in Low voltage reset to prevent unusual system operation at low voltage
Note1: TMBB: 4KHz, 1KHz, 128Hz, 64Hz, 32Hz, 16Hz, 8Hz or 4HzNote2: TMBA: 2Hz or 1Hz