mic10951 Micrel Semiconductor, mic10951 Datasheet

mic10951

Manufacturer Part Number

mic10951

Description

V. F. Bargraph And Numeric Display Controller - Micrel Semiconductor

Manufacturer

Micrel Semiconductor

Datasheet

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General Description

The MIC10951 Bargraph and Numeric Display Controller is

an LSI general purpose display controller designed to inter-

face to bargraph and numeric displays (vacuum fluorescent

or LED).

The MIC10951 will drive 16-segment bargraph or 7-segment

plus comma and decimal numeric displays with up to 16

display positions. The controller accepts command and data

input words on a clocked serial input line. Commands control

the on/off duty cycle, starting character position, and number

of characters to display. Encoded data words display bargraph

position (single segment or increasing bar length), numbers,

comma, decimal, and selected upper and lower case letters.

No external drive circuitry is required for displays that operate

on 20mA of drive current up to 50V. A 64

decoder provides character set decoding for the display.

Micrel has received the rights from Rockwell International to

manufacture and market this product and reproduce the

specifications, including references to Rockwell.

Block Diagram

August 1998

MIC10951

DATA

SCLK

POR

VSS

VDD

CONTROL

TIMING

AND

DIGIT DRIVERS

(GRID)

DECIMAL POINT

COMMA TAIL

DISPLAY

BUFFER

DATA

16-bit segment

8-25

16 PLA

Features

• 16 segment drivers plus decimal point and comma tail

• 16 digit drivers

• Up to 66kHz data rate

• Direct digit drive of 20mA for up to 50V displays

• Supports vacuum fluorescent or LED displays

• Serial data input for 8-bit display and control data words

• 64

• Command functions

• 40-pin DIP package

Ordering Information

†

* Contact Micrel for more information.

Summary Information*—Not Recommended for New Designs

V. F. Bargraph and Numeric Display Controller

Part Number

MIC10951P-40/

MIC10951P-50

MIC10951PE-40/

MIC10951PE-50

Dual-marked devices replace both 40V and 50V versions

drivers

Any 1 of 16 bargraphs segments

1 to 16 bargraph segments

Ten 7-segment numeric characters (0 through 9)

Comma and decimal

8 upper and lower case 7-segment characters

Duty cycle adjust

Character position select

Number of characters

16-bit PLA provides segment decoding driving

SEGMENT

DECODER

†

Drive

50V

MIC10951

–40 C to +85 C

Temp. Range

0 C to +70 C

SEGMENT

DRIVERS

(ANODE)

40-pin P-DIP

Package

SGA

SGB

SGC

SGD

SGE

SGF

SGG

SGH

SGI

SGJ

SGK

SGL

SGM

SGN

SGO

SGP

PNT

TAIL

Micrel

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