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Intersil Electronic Components Datasheet



ICM7218

8-Digit LED Microprocessor-Compatible Multiplexed Display Decoder Driver


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ICM7218 pdf
Data Sheet
September 15, 2015
ICM7218
FN3159.3
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.
Features
• Microprocessor Compatible
• Total Circuit Integration On Chip Includes:
- Digit and Segment Drivers
- All Multiplex Scan Circuitry
- 8-Byte Static Display Memory
- 7-Segment Hexadecimal and Code B Decoders
• 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
Low Power Dissipation Mode
• Sequential and Random Access Versions
• Decimal Point Drive On Each Digit
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
ID0-ID7
INPUT
DATA
8
ICM7218A COMMON ANODE
ICM7218B COMMON CATHODE
ID4-ID7 MODE WRITE
8 CONTROL
INPUTS
41
1
1
1
7
4
DECODE
HEXA/CODE B
8-BYTE
STATIC
RAM
CONTROL
SHUTDOWN
LOGIC
81
1
WRITE ADDRESS
8 COUNTER
1
8
READ
ADRESS, DIGIT
MULTIPLEXER
HEXADECIMAL/
CODE B
7
DECODER
7
3
MULTIPLEX
OSCILLATOR
DECODE/
NO-DECODE
1
7 DECIMAL
POINT
8-SEGMENT
DRIVERS
1
8
8-DIGIT
DRIVERS
INTERDIGIT
BLANKING
ICM7218C COMMON ANODE
ICM7218D COMMON CATHODE
HEXADECIMAL/
CODE B/
SHUTDOWN
1
ID0-ID3
ID7
DATA
INPUT
5
WRITE
1
DA0-DA2
DIGIT
ADDRESS
3
THREE LEVEL 1
INPUT LOGIC
1
8-BYTE
STATIC
RAM
4
8
8
SHUTDOWN
WRITE
ADDRESS
DECODER
8
READ
ADRESS
MULTIPLEXER
HEXADECIMAL/
CODE B
DECODER
1
8
7 DECIMAL
POINT
5
MULTIPLEX
OSCILLATOR
1 INTERDIGIT
BLANKING
8-SEGMENT
DRIVERS
8-DIGIT
DRIVERS
FIGURE 1. FUNCTIONAL DIAGRAMS
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2001, 2007, 2015. All Rights Reserved
Intersil (and design) and XDCP are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.



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ICM7218 pdf
ICM7218
Ordering Information
PART NUMBER
TEMP.
PART MARKING DISPLAY TYPE RANGE (°C)
PACKAGE
PKG.
DWG. #
ICM7218AIJI
ICM7218AIJI
Common Anode -40 to +85 28 Ld CERDIP
F28.6
ICM7218AIJIR5254 (Note)
ICM7218AIJI R5254 Common Anode -40 to +85 28 Ld CERDIP (Note) F28.6
ICM7218BIJI
ICM7218BIJI
Common Cathode -40 to +85 28 Ld CERDIP
F28.6
ICM7218BIJIR5254 (Note)
ICM7218BIJI R5254 Common Cathode -40 to +85 28 Ld CERDIP (Note) F28.6
ICM7218CIJI
ICM7218CIJI
Common Anode -40 to +85 28 Ld CERDIP
F28.6
ICM7218CIJIR5254 (Note)
ICM7218CIJI R5254 Common Anode -40 to +85 28 Ld CERDIP (Note) F28.6
ICM7218DIJI
ICM7218DIJI
Common Cathode -40 to +85 28 Ld CERDIP
F28.6
ICM7218DIJIR5254 (Note) (No longer available,
recommended replacement: ICM7218DIJI)
ICM7218DIJI R5254 Common Cathode -40 to +85 28 Ld CERDIP (Note) F28.6
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. Ceramic dual in-line packaged products (CerDIPs) do contain lead (Pb) in the seal
glass and die attach glass materials. However, lead in the glass materials of electronic components are currently exempted per the RoHS directive.
Therefore, ceramic dual inline packages with Pb-free termination finish are considered to be RoHS compliant.
Pinouts
ICM7218A (28 LD CERDIP)
TOP VIEW
Seg c 1
Seg e 2
Seg b 3
D.P. 4
ID6 (HEXA/CODEB) 5
ID5 (DECODE) 6
ID 7 (DATA COMING) 7
WRITE 8
MODE 9
ID4 (SHUTDOWN) 10
ID1 11
ID0 12
ID2 13
ID3 14
28 VSS
27 Seg a
26 Seg g
25 Seg d
24 Seg f
23 DIGIT 3
22 DIGIT 6
21 DIGIT 7
20 DIGIT 4
19 VDD
18 DIGIT 8
17 DIGIT 5
16 DIGIT 2
15 DIGIT 1
ICM7218B (28 LD CERDIP)
TOP VIEW
DIGIT 4 1
DIGIT 6 2
DIGIT 3 3
DIGIT 1 4
ID6 (HEXA/CODEB) 5
ID5 (DECODE) 6
ID 7 (DATA COMING) 7
WRITE 8
MODE 9
ID4 (SHUTDOWN) 10
ID1 11
ID0 12
ID2 13
ID3 14
28 VSS
27 DIGIT 7
26 DIGIT 5
25 DIGIT 2
24 DIGIT 8
23 Seg g
22 Seg f
21 Seg e
20 Seg c
19 VDD
18 Seg d
17 Seg b
16 Seg a
15 D.P.
ICM7218A (28 LD CERDIP)
TOP VIEW
Seg c 1
Seg e 2
Seg b 3
D.P. 4
DA0 (DIGIT ADDRESS 0) 5
DA1 (DIGIT ADDRESS 1) 6
ID 7 (INPUT D.P.) 7
WRITE 8
HEXA/CODE B/SHUTDOWN 9
DA2 (DIGIT ADDRESS 2) 10
ID1 11
ID0 12
ID2 13
ID3 14
28 VSS
27 Seg a
26 Seg g
25 Seg d
24 Seg f
23 DIGIT 3
22 DIGIT 6
21 DIGIT 7
20 DIGIT 4
19 VDD
18 DIGIT 8
17 DIGIT 5
16 DIGIT 2
15 DIGIT 1
2
ICM7218B (28 LD CERDIP)
TOP VIEW
DIGIT 4 1
DIGIT 6 2
DIGIT 3 3
DIGIT 1 4
DA0 (DIGIT ADDRESS 0) 5
DA1 (DIGIT ADDRESS 1) 6
ID 7 (INPUT D.P.) 7
WRITE 8
HEXA/CODE B/SHUTDOWN 9
DA2 (DIGIT ADDRESS 2) 10
ID1 11
ID0 12
ID2 13
ID3 14
28 VSS
27 DIGIT 7
26 DIGIT 5
25 DIGIT 2
24 DIGIT 8
23 Seg g
22 Seg f
21 Seg e
20 Seg c
19 VDD
18 Seg d
17 Seg b
16 Seg a
15 D.P.
FN3159.3
September 15, 2015



Part Number ICM7218
Description 8-Digit LED Microprocessor-Compatible Multiplexed Display Decoder Driver
Maker Intersil Corporation - Intersil Corporation
Total Page 11 Pages
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