ICM7218AIJI Intersil, ICM7218AIJI Datasheet

ICM7218AIJI

Manufacturer Part Number

ICM7218AIJI

Description

IC DRIVER DECODER 8DIG 28-CDIP

Manufacturer

Intersil

Datasheets

1.ICM7218AIJIR5254.pdf (11 pages)

2.ICM7218AIJI.pdf (2 pages)

Specifications of ICM7218AIJI

Display Type

LED

Configuration

7 Segment

Digits Or Characters

8 Digits

Current - Supply

2.5mA

Voltage - Supply

4 V ~ 6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Through Hole

Package / Case

28-CDIP (0.600", 15.24mm)

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Interface

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ICM7218AIJI

Manufacturer:

Intersil

Quantity:

377

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ICM7218AIJI

Quantity:

Company:

BOSTOCK HK LIMITED

Part Number:

ICM7218AIJI

Manufacturer:

INTERSIL

Quantity:

246

Company:

Meier Automation Equipment Co., Limited

Part Number:

ICM7218AIJI

Manufacturer:

HARRIS

Quantity:

20 000

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Download datasheet (253Kb)

8-Digit LED Microprocessor-Compatible

Multiplexed Display Decoder Driver

The ICM7218 series of universal LED driver systems

provide, in a single package, all the circuitry necessary to

interface most common microprocessors or digital systems

to an LED display. Included on chip are an 8-byte static

display memory, two types of 7-segment decoders, multiplex

scan circuitry, and high current digit and segment drivers for

either common-cathode or common-anode displays.

The lCM7218A and 1CM7218B feature two control lines

(WRITE and MODE) which write either 4 bits of control

information (DATA COMING, SHUTDOWN, DECODE, and

HEXA/CODE B) or 8 bits of display input data. Display data

is automatically sequenced into the 8-byte internal memory

on successive positive going WRITE pulses. Data may be

displayed either directly or decoded in Hexadecimal or Code

B formats.

The ICM7218C and lCM7218D feature two control lines

(WRITE and HEXA/CODE B/SHUTDOWN), 4 separate

display data input lines, and 3 digit address lines. Display

data is written into the internal memory by setting up a digit

address and strobing the WRITE line low. Only Hexadecimal

and Code B formats are available for display outputs.

ID0-ID7

INPUT

DATA

HEXADECIMAL/

NO-DECODE

8-SEGMENT

HEXA/CODE B

DECODER

DECODE/

DRIVERS

CODE B

8-BYTE

STATIC

RAM

ICM7218B COMMON CATHODE

DECODE

DECIMAL

POINT

ICM7218A COMMON ANODE

CONTROL

INPUTS

ID4-ID7

Data Sheet

CONTROL

DRIVERS

MODE

8-DIGIT

LOGIC

WRITE ADDRESS

ADRESS, DIGIT

MULTIPLEXER

OSCILLATOR

MULTIPLEX

COUNTER

WRITE

READ

FIGURE 1. FUNCTIONAL DIAGRAMS

INTERDIGIT

BLANKING

SHUTDOWN

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Features

• Microprocessor Compatible

• Total Circuit Integration On Chip Includes:

• Output Drive Suitable for LED Displays Directly

• Common Anode and Common Cathode Versions

• Single 5V Supply Required

• Data Retention to 2V Supply

• Shutdown Feature - Turns Off Display and Puts Chip Into

• Sequential and Random Access Versions

• Decimal Point Drive On Each Digit

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

- Digit and Segment Drivers

- All Multiplex Scan Circuitry

- 8-Byte Static Display Memory

- 7-Segment Hexadecimal and Code B Decoders

Low Power Dissipation Mode

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

February 15, 2007

HEXADECIMAL/

THREE LEVEL

INPUT LOGIC

SHUTDOWN

8-SEGMENT

DECODER

CODE B/

DRIVERS

8-BYTE

STATIC

CODE B

RAM

DECIMAL

POINT

ICM7218D COMMON CATHODE

ICM7218C COMMON ANODE

Intersil and Design is a trademark of Intersil Americas Inc.

ID0-ID3

INPUT

DATA

ID7

DRIVERS

WRITE

8-DIGIT

DECODER

ADDRESS

WRITE

MULTIPLEXER

OSCILLATOR

MULTIPLEX

ADDRESS

DA0-DA2

ADRESS

DIGIT

READ

INTERDIGIT

BLANKING

ICM7218

SHUTDOWN

FN3159.2

Related parts for ICM7218AIJI

ICM7218AIJI Summary of contents

Page 1

... DECODER 8-BYTE STATIC 8 8 RAM READ ADRESS MULTIPLEXER 5 CODE B 1 MULTIPLEX DECODER OSCILLATOR 8 1 INTERDIGIT DECIMAL BLANKING POINT 8-DIGIT 8-SEGMENT DRIVERS DRIVERS | Intersil and Design is a trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2001, 2007. All Rights Reserved FN3159.2 ...

Page 2

... Ordering Information PART NUMBER PART MARKING ICM7218AIJI ICM7218AIJI ICM7218AIJIR5254 (Note) ICM7218AIJI R5254 ICM7218BIJI ICM7218BIJI ICM7218BIJIR5254 (Note) ICM7218BIJI R5254 ICM7218CIJI ICM7218CIJI ICM7218CIJIR5254 (Note) ICM7218CIJI R5254 ICM7218DIJI ICM7218DIJI ICM7218DIJIR5254 (Note) ICM7218DIJI R5254 NOTE: Intersil Pb-free hermetic packaged products employ SnAgCu or Au termination finish, which are RoHS compliant termination finishes and compatible with both SnPb and Pb-free soldering operations ...

Page 3

Absolute Maximum Ratings Supply Voltage ( Digit ...

Page 4

Electrical Specifications PARAMETER Digital Address Hold Time Data Input Impedance Pin Descriptions INPUT ICM7218A AND ICM7218B WRITE MODE ID4 (SHUTDOWN) MODE High ID5 (DECODE) ID6 (HEXA/CODE B) ID7 (DATA COMING) ID0-ID7 MODE Low 11, 12, ...

Page 5

FIGURE 2. MULTIPLEX TIMING (COMMON CATHODE VERSION) FIGURE 3. SEGMENT ASSIGNMENTS Detailed Description DECODE Operation For the lCM7218A/B products, there are 3 input data formats possible; either direct segment and decimal point information (8 bits per digit) or two Binary ...

Page 6

Inter Digit Blanking A blanking time of approximately 10μs occurs between digit strobes. This ensures that the segment information is correct before the next digit drive, thereby avoiding display ghosting. Driving Larger Displays If a higher average drive current per ...

Page 7

FIGURE 6. TIMING DIAGRAM FOR ICM7218C/D FIGURE 7. COMMON ANODE DISPLAY FUNCTIONAL TEST CIRCUIT 7 ICM7218 FN3159.2 February 15, 2007 ...

Page 8

FIGURE 8. COMMON CATHODE DISPLAY FUNCTIONAL TEST CIRCUIT Typical Performance Characteristics 8 ICM7218 FN3159.2 February 15, 2007 ...

Page 9

Application Examples 8-Digit Microprocessor Display Application Figure 9 shows a display interface using the lCM7218A/B with an 8048 family microcontroller. The 8 bit data bus (DB0/DB7-lD0/ID7) transfers control and data information to the 7218 display interface on successive WRITE pulses. ...

Page 10

ICM7218 FIGURE 10. 16-DIGIT DISPLAY 10 FN3159.2 February 15, 2007 ...

Page 11

... 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; nor for any infringements of patents or other rights of third parties which may result from its use ...

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