HT1632C datasheet(1/24 Pages) HOLTEK

Part #	HT1632C

Description	32x8 & 24x16 LED Driver

PDF	24 Pages

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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HT1632C

32´8&24´16 LED Driver

Block Diagram

Rev. 1.20

1

June 28, 2011

General Description

The HT1632C is a memory mapping LED display control-

ler/driver, which can select a number of ROW and com-

mons. These are 32 ROW & 8 commons and 24 ROW &

16 commons. The device supports 16-gradation LEDs

for each out line using PWM control with software instruc-

tions. A serial interface is conveniently provided for the

command mode and data mode. Only three or four lines

are required for the interface between the host controller

and the HT1632C. The display can be extended by cas-

cading the HT1632C for wider applications.

Features

· Operating voltage: 2.4V~5.5V

· Multiple LED display - 32 ROW /8 COM and

24 ROW & 16 COM

· Integrated display RAM - select 32 ROW &

8 COM for 64

´4 display RAM, or select

24 ROW & 16 COM for 96

´4 display RAM

· 16-level PWM brightness control

· Integrated 256kHz RC oscillator

· Serial MCU interface - CS,RD,WR, DATA

· Data mode & command mode instruction

· Cascading function for extended applications

· Selectable NMOS open drain output driver and

PMOS open drain output driver for commons

· 52-pin QFP package

P W M C o n t r o l

D i s p l a y R A M

L E D D r i v e r

C o n t r o l

a n d

T i m i n g

C i r c u i t

V D D

D A T A

W R

C S

R D

T i m i n g

G e n e r a t o r

O S C

C O M 0

C O M 7

R O W 0

R O W 2 3

R O W 2 4 / C O M 1 5

R O W 3 1 / C O M 8

L E D _ V S S

V S S

S Y N C

L E D _ V D D

2

Applications

· Industrial control indicator

· Digital clock, thermometer, counter, voltmeter

· Instrumentation readouts

· Other consumer application

· LED Displays

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