Description
:
Pin name COM0-COM7 SEG0-SEG39 P10-P17 OSC1 OSC2 XOSC1 XOSC2 SOUND1 SOUND2 /RES CONTRAST VDD VSS I/O O O I/O I O I O O O I I (Total 66 pads) Function description LCD common output pins LCD segment output pins 8-bit I/O pins for port 1 Main system oscillator input pin for chip Main system oscillator
Features
- :
STK55C324.
- Operating voltage : 2.5V.
- 5.5 V.
- Maximum CPU operating frequency : 2MHz at 2.7V.
- Dual oscillators : - RC or 32.768 KHz crystal oscillator for LCD display and watch timer. - RC oscillator for system clock.
- 40 segments and 8 commons output for LCD driver. - 1/4 bias, 1/8 duty and 64Hz frame frequency. - 16 levels contrast control.
- I/O port. - 8 I/O pins with selectable wake up interrupt. - Two output pins. These two pins can be set as sound chann.