CH455

LED drive and keyboard control chip

CH455 Features

* Set display current drive layer internally, the current of segment is no less than 25mA, the current of word is no less than 160mA.

* Display scan control dynamically, support 8×4 or 7×4, directly drive four bits number LED or thirty two LEDs.

* Internal limit current, set eight level

CH455 General Description

Positive power, the persistent current is no less than 150mA Public ground, the persistent current is no less than 150mA Segment driver of LEDs, active with high level, Keyboard scan input, active with high level, with pull-down resistor Radix point segment output of LED, active with high level, Key.

CH455 Datasheet (178.29 KB)

CH455 Datasheet Preview — Preview of CH455 PDF

Datasheet Details

Part number:

CH455

Manufacturer:

ETC

File Size:

178.29 KB

Description:

Led drive and keyboard control chip.
English DataSheet of CH455 1 LED drive and keyboard control chip CH455 English DataSheet Version:1C http://wch.cn 1. Introduction CH455 is LED displ.

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CH455 LED drive and keyboard control chip ETC

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CH455 Features

CH455 General Description

Datasheet Details

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Description:

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