CH450 - LED drive and keyboard controller

CH450 Datasheet Preview — Preview of CH450 PDF

Datasheet Details

Part number	CH450
Manufacturer	ETC
File Size	227.66 KB
Description	LED drive and keyboard controller
Datasheet	CH450_ETC.pdf

CH450 Product details

Description

Positive power, the persistent current is no less than 100mA Public ground, the persistent current is no less than 100mA Segment drive of numeric LEDs, high-level active, keyboard scan input, high-level active, with pull-down resistor Word drive of numeric LEDs, low-level active, keyboard scan output, high-level active DIG2～DIG7 4 SDA Data input and output of two wires serial interface 3 9 SCL RSTH Data clock of two wires serial interface, with pull-up resistor internal Power up reset out

Features

Set display current drive layer internal, the segment current is no less than 15mA, the word current is no less than 80mA.
Dynamically display scan control, directly drive six bits numeric LEDs or forty eight LEDs.
Set forty eight keys keyboard controller internal, basic on 8×6 matrix keyboard scan.
Set pull-down resistor internal on the key pressed station, and set eliminate dithering circuit internal.
Supplies keyboard interrupt active with low-level, supplies key.

📁 CH450 Similar Datasheet

CH450FPT - SCHOTTKY BARRIER DIODE (Chenmko Enterprise)
CH402DPT - SCHOTTKY BARRIER DIODE (Chenmko Enterprise)
CH402H-40PT - SCHOTTKY BARRIER DIODE (Chenmko Enterprise)
CH402N1PT - SCHOTTKY BARRIER DIODE (Chenmko Enterprise)
CH4036 - Power Transistors (RCA)
CH4037 - Power Transistors (RCA)
CH411 - Hall-effect latch (Cosemitech)
CH412 - Hall-effect latch (Cosemitech)

Other Datasheets by ETC

CH452 - Digital tube driver and keyboard controller
CH455 - LED drive and keyboard control chip
CH402 - COOLING CONTROLLER
CH403 - COOLING CONTROLLER
CH422 - LED Nixie Tube Display Driver and I/O Extension Chip
CH423 - Two-wire remote I / O expansion chip

Published: Jan 15, 2012 |