Description
:
Pin name COM1-COM16 SEG1SEG40 VLCD VR CLK256 P10-P17 P20-P27 P30-P37 P40-P45 OSC1 OSC2 XOSC1 XOSC2 SOUND /RES /TEST VDD VSS1, VSS2
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STK55C641
(Total 100 pads) Function description LCD common output pins LCD segment output pins LCD voltage input LCD contrast control 256 Hz cloc
Features
- :.
- Operating voltage : 2.5V - 6V.
- Maximum CPU operating frequency : 4MHz at 5V and 1.5MHz at 2.5V.
- Dual oscillators : - 32.768 KHz crystal oscillator for LCD display and watch timer. - RC oscillator for system clock.
- 40 segments and 16 commons output for LCD driver. - 1/5 bias, 1/16 duty and 64Hz frame frequency. - 1/4 bias, 1/8 duty and 128Hz frame frequency.
- I/O port. - 30 I/O pins. - Port 1 with selectable interrupt.
- Built in 2K bytes RAM (including LCD stora.
STK55C641 Datasheet
