ICM7243BIPL Intersil Corporation, ICM7243BIPL Datasheet

ICM7243BIPL

Manufacturer Part Number

ICM7243BIPL

Description

357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO

Manufacturer

Intersil Corporation

Datasheet

1.ICM7243BIPL.pdf (12 pages)

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1-888-INTERSIL or 321-724-7143

All other trademarks mentioned are the property of their respective owners.

August 1997

Features

• 14-Segment and 16-Segment Fonts with Decimal Point

• Mask Programmable for Other Font-Sets Up to 64

• Microprocessor Compatible

• Directly Drives LED Common Cathode Displays

• Cascadable Without Additional Hardware

• Standby Feature Turns Display Off; Puts Chip in Low

• Sequential Entry or Random Entry of Data Into Display

• Single +5V Operation

• Character and Segment Drivers, All MUX Scan

Ordering Information

ICM7243AIJL

ICM7243AIPL

ICM7243BIJL

ICM7243BlPL

PART NUMBER

Characters

Power Mode

Circuitry, 8 x 6 Static Memory and 64-Character ASCll

Font Generator Included On-Chip

-25

RANGE (

TEMP.

C to 85

Intersil (and design) is a registered trademark of Intersil Americas Inc.

C 40 Ld CERPDIP

C 40 Ld PDIP

C 40 Ld CERPDIP

C 40 Ld PDIP

PACKAGE

F40.6

E40.6

F40.6

E40.6

PKG.

NO.

Compatible, LED Display Decoder Driver

Description

The ICM7243 is an 8-character, alphanumeric display driver

and controller which provides all the circuitry required to

interface a microprocessor or digital system to a 14-segment

or 16-segment display. It is primarily intended for use in

microprocessor systems, where it minimizes hardware and

software overhead. Incorporated on-chip are a 64-character

ASClI decoder, 8 x 6 memory, high power character and

segment drivers, and the multiplex scan circuitry.

6-bit ASCll data to be displayed is written into the memory

directly from the microprocessor data bus. Data location

depends

(MODE = 1) or Random access mode (MODE = 0). In the

Sequential Access mode the first entry is stored in the

lowest location and displayed in the “left-most” character

position. Each subsequent entry is automatically stored in

the next higher location and displayed to the immediate

“right” of the previous entry. A DISPlay FULL signal is pro-

vided after 8 entries; this signal can be used for cascading

devices together. A CLeaR pin is provided to clear the mem-

ory and reset the location counter. The Random Access

mode allows the processor to select the memory address

and display digit for each input word.

The character multiplex scan runs whenever data is not

being entered. It scans the memory and CHARacter drivers,

and ensures that the decoding from memory to display is

done in the proper sequence. Intercharacter blanking is

provided to avoid display ghosting.

upon

8-Character, Microprocessor-

the

ICM7243

selection

either

Sequential

FN3162.1

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ICM7243BIPL Summary of contents

Page 1

August 1997 Features • 14-Segment and 16-Segment Fonts with Decimal Point • Mask Programmable for Other Font-Sets Characters • Microprocessor Compatible • Directly Drives LED Common Cathode Displays • Cascadable Without Additional Hardware • Standby Feature ...

Page 2

Pinouts ICM7243A (16-SEGMENT CHARACTER) (PDIP, CERDIP) TOP VIEW SEG 2 e SEG 3 g1 SEG 4 k SEG 5 c SEG 6 d1 SEG 7 a1 SEG 8 a2 SEG ...

Page 3

Functional Block Diagram DATA INPUT (NOTE MODE D SEL A0/SEN D ADDRESS A1/CLR MUX D A2/DISP FULL OSC/OFF OSCILLATOR NOTE: 1. ICM7243A has only one CS and no CS. ICM7243B ...

Page 4

Absolute Maximum Ratings Supply Voltage +6. Input ...

Page 5

Timing Waveforms ADDRESS WRITE DATA WR CLEAR SEN DISPLAY FULL FIGURE 2. SEQUENTIAL ACCESS MODE TIMING (MODE = 1) ~ 5µs INTERNAL INTER-CHARACTER BLANKING SIGNAL CHAR 1 CHAR 2 CHAR 3 CHAR 4 CHARACTERS DRIVE SIGNALS CHAR 5 CHAR 6 ...

Page 6

Performance Curves 5. 4. SEGMENT VOLTAGE (V) FIGURE 4. SEGMENT CURRENT vs OUTPUT VOLTAGE Pin Descriptions SIGNAL PIN ICM7243A( Six-Bit ASCll Data input pins (active ...

Page 7

Test Circuit V DD SEG m SEG g1 SEG SEG SEGMENTS SEG d1 SEG a1 SEG a2 SEG CHAR 8 CHAR 7 CHAR 6 ICM7243 17 SEGMENTS CHAR 8 CHAR ...

Page 8

Typical Applications RRI RBR8 RBR7 IM6403 UART RBR1 - RBR6 6 BIT BUS DRR DR +5V 20K + OUT V TR ICL7555 DELAY TH 200pF FIGURE 7. DRIVING TWO ROWS OF CHARACTERS FROM A SERIAL INPUT ICM7243 8 CHARACTERS +5V ...

Page 9

Typical Applications (Continued) 8-CHARACTER LED DISPLAY CLR CLR CHAR SEG +5V SEN DISP FULL +5V MODE DATA BUS 6 WR, (CS) CS, (WR) FIRST 8 CHARACTERS NOTE: 17 for ICM7243A, 15 ...

Page 10

Typical Applications (Continued) 8 CHARACTERS ICM7243A P22 P21 P20 80C35 80C48 DB7 DB6 DB5 - DB0 6 BIT BUS WR FIGURE 10. RANDOM ACCESS 32-CHARACTER DISPLAY IN A 80C48 SYSTEM Display Font ...

Page 11

Display Font and Segment Assignments D5 NOTE: Segments a and d appear as 2 segments ...

Page 12

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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