CH450 PDF 데이터시트 검색

w w w . D a t a S h e e t . c o . k r The t of CH450 (the first) 1 LED drive and keyboard control chip CH450 English t Version:1C http:, , wch.cn 1. Introduction CH450 is numeric LEDs display drive and keyboard scan control chip. CH450 sets clock surging circuit internal, drives six bits numeric LEDs or forty-eight LEDs automatically. And it carries out forty-eight keys keyboard scan. CH450 exchanges data with MCU via two wires serial interface and supplies power-up reset signal to MCU. SCL