STK55C641 Datasheet, PDF (1/19 Pages) List of Unclassifed Manufacturers – STK55C641

Syntek Semiconductor Co., Ltd
STK55C641 Specification
STK55C641
1. 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 storage area).
* Built in 8K bytes ROM for program.
* One 8-bit timer with 8 predefined input clock.
* Five interrupt sources :
NMI - 64 Hz interrupt
IRQ1 - Stopwatch timer interrupt
IRQ2 - Fix-time timer interrupt
IRQ3 - Timer interrupt
IRQ4 - External interrupt
* Code option :
- Built-in 150K OHM pull-up resistors for I/O port.
- 1/8 duty or 1/16 duty.
2. APPLICATION :
* Data bank
* Calculator
* Hand-held game
* Small instrument
* Toy
LCD Controller
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ISSUE DATE : 3 March, 2000