U2642B データシートの表示（PDF） - Atmel Corporation

部品番号

コンポーネント説明

一致するリスト

U2642B

Intermittent- and Wipe/ Wash Control for Wiper Systems

Atmel Corporation 

U2642B

Intermittent- and Wipe/ Wash Control for Wiper Systems

Description

With the U264xB, Atmel Wireless & Microcontrollers

developed a family of intermittent- and wipe/wash con-

trol circuits for windshield or backlite wiper systems with

identical basic functions. The circuit design provides the

possibility to generate “x” versions using different metal-

lization masks. Thus, it is easy to verify a broad range of

time sequences which can be set independently of each

other.

Features

D Relay activation can be controlled by a limit switch of

the wiper motor or by a fixed activation period for

systems without limit switch

D Debounced input stages

D Enable/disable of pre-wash delay by program pin

D Polarity of WIWA: VBatt

D Polarity of INT: VBatt

D Relay output is protected with a clamping diode

D Relay activation: 0.64 s

D Interval pause: 10 s

D After wiping:

5.8 s

D Pre-wash delay: 0.91 s

D Wipe/wash mode with priority

D Protected in accordance to ISO/TR 7637–1

D EMC with intergrated filters

Block Diagram

VS

OSC

Voltage

stabilization

and

POR

Oscillator

INT

WIWA

LS

PP

21 V

21 V

21 V

Input

comparator

21 V

Logic

Load-

dump

detection

and

output

control

Open-collector

relay driver

REL

21 V

GND

Ordering Information

Figure 1. Block diagram

Extended Type Number

U2642B

U2642B–FP

Package

DIP8

SO8

13944

Remarks

Rev. A4, 05-Apr-01

1 (10)

Share Link: