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STK55C641 - STK55C641

General 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 www.DataSheet4U.com STK55C641 (Total 100 pads) Function description LCD common output pins LCD segment output pins LCD voltage input LCD contrast control 256 Hz cloc

Key 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.

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Datasheet Details

Part number STK55C641
Manufacturer Syntek Semiconductor
File Size 384.21 KB
Description STK55C641
Datasheet download datasheet STK55C641 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Syntek Semiconductor Co., Ltd STK55C641 Specification 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 www.DataSheet4U.