Products - GPL81408A

General Description

The GPL81408A, 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.

Features

• Built-in 8-bit CPU
  • 160 bytes SRAM
  • 64K bytes ROM
  • 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 Internal R-oscillator’s clock frequency is available.
  • 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

• 16 general purpose I/O
  • SEG[33] can be optioned to IOAB[3]
  • 8 IO pins IOEF[7:0] support Key wake-up mode
• LCD controller / driver
  • 34 segments x 5 commons, max. 170 dots
  • LCD bias: 1/3
  • LCD duty: 1/3,1/4,1/5