AY0438L

更新时间： 2024-11-15 12:48:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		驱动器
页数	文件大小	规格书
11页	84K
描述
32-Segment CMOS LCD Driver

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AY0438L 数据手册

AY0438

32-Segment CMOS LCD Driver

FEATURES

PIN CONFIGURATION

40-Lead Dual In-line

• Drives up to 32 LCD segments of arbitrary conﬁg-

uration

VDD

LOAD

CLOCK

SEG 1

SEG 2

SEG 3

VSS

• CMOS process for: wide supply voltage range,

low- power operation, high-noise immunity, wide

temperature range

SEG 32

SEG 31

SEG 30

SEG 29

SEG 28

SEG 27

SEG 26

SEG 25

SEG 24

SEG 23

SEG 22

SEG 21

SEG 20

SEG 19

SEG 18

SEG 17

SEG 16

SEG 15

• CMOS and TTL-compatible inputs

• Electrostatic discharge protection on all pins

• Cascadable

DATA OUT

DATA IN

SEG 4

SEG 5

LCDΦ

• On-chip oscillator

• Requires only three control lines

SEG 6

SEG 7

SEG 8

SEG 9

SEG 10

SEG 11

SEG 12

SEG 13

SEG 14

APPLICATIONS

• Industrial displays

• Consumer product displays

• Telecom product displays

• Automotive dashboard displays

DESCRIPTION

The AY0438 is a CMOS integrated device that drives a

liquid crystal display, usually under microprocessor

control. The part acts as a smart peripheral that drives

up to 32 LCD segments. It needs only three control

lines due to its serial input construction. It latches the

data to be displayed and relieves the microprocessor

from the task of generating the required waveforms.

44 PLCC

The AY0438 can drive any standard or custom parallel

drive LCD display, whether it be ﬁeld effect or dynamic

scattering; 7-, 9-, 14- or 16-segment characters; deci-

mals; leading + or -; or special symbols. Several

AY0438 devices can be cascaded. The AC frequency

of the LCD waveforms can either be supplied by the

user or generated by attaching a capacitor to the LCD

input, which controls the frequency of an internal oscil-

lator.