描述 Description

The GPL31C, an 8-bit CMOS single chip microprocessor, contains RAM, ROM, I/Os, interrupt/wakeup controller, timer, 8-bit PWM audio output and automatic display controller/ driver for LCD. With a dual channel PWM driver, attractive sound effects can be generated easily. Furthermore, a software controllable standby mode is also implemented for power saving. The GPL31C is designed with state-of-the-art technology to fulfill the specifications of LCD hand-held applications.

特性 Features

? Built-in 8-bit CPU
? 160 bytes SRAM
? 64K bytes ROM
? Max. CPU clock: 2.0MHz @ 2.0V – 5.5V
? Programmable CPU clock frequency, 1/2, 1/4, 1/8, 1/16, 1/32 or 1/64 of R-oscillator's clock frequency is available
? R-oscillator's clock frequency can be set to 3.0MHz or 4.0MHz (mask option)
? Provides 7 interrupt sources

? Built-in 8-bit 1-channel PWM outputs
? Built-in 32.768KHz Crystal / R-oscillator
? Crystal or R-oscillator (mask option)
? Crystal oscillator switches from strong to Weak mode automatically
? Internal time base generator

? Built-in System R-oscillator
? No resistor is needed

? One 16-bit timer/counters
? Low Voltage Reset
? Provides 1.9V low voltage reset function

? Low power consumption
? Operating current: 500uA/1.0MHz @ 3.0V
? Very low standby current : ISTBY < 1.0μA @ 3.0V In standby mode: stop all oscillators

? Max. 16 general purpose I/O
? SEG[31:28] can be optioned to IOAB[0:3]
? 8 IO pins IOEF[7:0] support Key wake-up mode

? LCD controller / driver
? 32 segments x 5 commons, max. 160 dots
? LCD bias: 1/3
? LCD duty: 1/3, 1/4, 1/5