LCD DISPLAY DRIVER, 5452, PLCC44

MM5452V

Manufacturer Part NumberMM5452V
DescriptionLCD DISPLAY DRIVER, 5452, PLCC44
ManufacturerNational Semiconductor
MM5452V datasheet
 


Specifications of MM5452V

Module ConfigurationCMOSSupply Current40µA
No. Of Segments32Meter Display TypeLCD
Supply Voltage Range3V To 10VDriver Case StyleLCC
No. Of Pins44Operating Temperature Range-40°C To
No. Of Digits / Alpha4.1/2Rohs CompliantYes
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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MM5452/MM5453
Liquid Crystal Display Drivers
General Description
The MM5452 is a monolithic integrated circuit utilizing
CMOS metal gate, low threshold enhancement mode de-
vices. It is available in a 40-pin molded package. The chip
can drive up to 32 segments of LCD and can be paralleled to
increase this number. The chip is capable of driving a
4
-digit 7-segment display with minimal interface between
1
2
the display and the data source.
The MM5452 stores display data in latches after it is clocked
in, and holds the data until new display data is received.
Features
n Serial data input
n No load signal required
Block Diagram
© 2001 National Semiconductor Corporation
n DATA ENABLE (MM5452)
n Wide power supply operation
n TTL compatibility
n 32 or 33 outputs
n Alphanumeric and bar graph capability
n Cascaded operation capability
Applications
n COPS
or microprocessor displays
n Industrial control indicator
n Digital clock, thermometer, counter, voltmeter
n Instrumentation readouts
n Remote displays
FIGURE 1.
DS006137
December 2001
00613701
www.national.com

MM5452V Summary of contents

  • Page 1

    ... The MM5452 stores display data in latches after it is clocked in, and holds the data until new display data is received. Features n Serial data input n No load signal required Block Diagram © 2001 National Semiconductor Corporation n DATA ENABLE (MM5452) n Wide power supply operation n TTL compatibility outputs n Alphanumeric and bar graph capability ...

  • Page 2

    ... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Voltage at Any Pin, Referenced to Gnd Storage Temperature Power Dissipation at 25˚C Power Dissipation at 70˚C Junction Temperature Electrical Characteristics fied. Parameter ...

  • Page 3

    ... Connection Diagrams Dual-In-Line Package Top View FIGURE 2. Plastic Chip Carrier Top View Order Number MM5452N, MM5453N, MM5452V or MM5453V 00613702 00613711 See NS Package Number N40A or V44A 3 Dual-In-Line Package 00613703 Top View FIGURE 3. Plastic Chip Carrier 00613712 Top View www.national.com ...

  • Page 4

    Functional Description The MM5452 is specifically designed to operate 4 7-segment displays with minimal interface with the display and the data source. Serial data transfer from the data source to the display driver is accomplished with 2 signals, serial data ...

  • Page 5

    Functional Description Consult LCD manufacturer’s data sheet for specific pinouts. FIGURE 6. Typical 4 (Continued) 1 ⁄ -Digit Display Application 2 5 00613706 www.national.com ...

  • Page 6

    Functional Description * The minimum recommended value for R for the oscillator input time constant of approximately 4. frequency between 30 Hz and 150 Hz. Figure 9 shows a four wire remote ...

  • Page 7

    Functional Description converter or resistor array. The result of this comparison is clocked into the MM5452, MM5453. The next clock pulse increments the staircase and clocks the new data in. With a buffer amplifier, the same staircase waveform can be ...

  • Page 8

    ... Physical Dimensions Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Molded Dual-In-Line Package (N) Order Number MM5452N or MM5453N NS Package Number N40A Plastic Chip Carrier (V) Order Number MM5452V or MM5453V NS Package Number V44A 8 ...

  • Page 9

    ... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...