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Intersil Electronic Components Datasheet

ICM7228 Datasheet

8-Digit / Microprocessor- Compatible / LED Display Decoder Driver

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ICM7228 pdf
®
Data Sheet
December 6, 2005
ICM7228
FN3160.8
8-Digit, Microprocessor-Compatible, LED
Display Decoder Driver
The Intersil ICM7228 display driver interfaces
microprocessors to an 8-digit, 7-segment, numeric LED
display. Included on chip are two types of 7-segment
decoder, multiplex scan circuitry, LED display segment
drivers, LED display digit drivers and an 8-byte static
memory as display RAM.
Data can be written to the ICM7228A and ICM7228B’s display
RAM in sequential 8-digit update or in single-digit update
format. Data is written to the ICM7228C display RAM in parallel
random access format. The ICM7228A and ICM7228C drive
common anode displays. The ICM7228B drives common
cathode displays. All versions can display the RAM data as
either Hexadecimal or Code B format. The ICM7228A and
ICM7228B incorporate a No Decode mode allowing each bit of
each digit's RAM word to drive individual display segments
resulting in independent control of all display segments. As a
result, bargraph and other irregular display segments and
formats can be driven directly by this chip.
The Intersil ICM7228 is an alternative to both the Maxim
ICM7218 and the Intersil ICM7218 display drivers. Notice that
the ICM7228A/B has an additional single digit access mode.
This could make the Intersil ICM7218A/B software incompatible
with ICM7228A/B operation.
Features
Pb-Free Plus Anneal Available (RoHS Compliant)
• Improved 2nd Source to Maxim ICM7218
• Fast Write Access Time of 200ns
• Multiple Microprocessor Compatible Versions
• Hexadecimal, Code B and No Decode Modes
• Individual Segment Control with “No Decode” Feature
• Digit and Segment Drivers On-Chip
• Non-Overlapping Digits Drive
• Common Anode and Common Cathode LED Versions
• Low Power CMOS Architecture
• Single 5V Supply
Applications
• Instrumentation
• Test Equipment
• Hand Held Instruments
• Bargraph Displays
• Numeric and Non-Numeric Panel Displays
• High and Low Temperature Environments where LCD
Display Integrity is Compromised
Ordering Information
PART NUMBER
PART MARKING
DATA ENTRY
PROTOCOL
TEMP. RANGE
DISPLAY TYPE
(oC)
PACKAGE
PKG. DWG. #
ICM7228AIBI
ICM7228AIBI
Sequential
Common Anode
-40 to 85 28 Ld SOIC
M28.3
ICM7228AIBIZ (Note) 7228AIBIZ
Sequential
Common Anode
-40 to 85 28 Ld SOIC (Pb-free) M28.3
ICM7228AIPI
ICM7228AIPI
Sequential
Common Anode
-40 to 85 28 Ld PDIP
E28.6
ICM7228AIPIZ (Note) ICM7228AIPI
Sequential
Common Anode
-40 to 85 28 Ld PDIP* (Pb-free) E28.6
ICM7228BIBI
ICM7228BIBI
Sequential
Common Cathode
-40 to 85 28 Ld SOlC
M28.3
ICM7228BIBIZ (Note) ICM7228BIBIZ Sequential
Common Cathode
-40 to 85 28 Ld SOlC (Pb-free) M28.3
ICM7228BIPI
ICM7228BIPI
Sequential
Common Cathode
-40 to 85 28 Ld PDIP
E28.6
ICM7228BIPIZ (Note) ICM7228BIPIZ Sequential
Common Cathode
-40 to 85 28 Ld PDIP (Pb-free) E28.6
ICM7228CIBI
ICM7228CIBI
Random
Common Anode
-40 to 85 28 Ld SOlC
M28.3
ICM7228CIBIZ (Note) ICM7228CIBIZ Random
Common Anode
-40 to 85 28 Ld SOlC (Pb-free) M28.3
ICM7228CIPI
ICM7228CIPI
Random
Common Anode
-40 to 85 28 Ld PDIP
E28.6
ICM7228CIPIZ (Note) ICM7228CIPI
Random
Common Anode
-40 to 85 28 Ld PDIP (Pb-free) E28.6
*Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002-2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.



Intersil Electronic Components Datasheet

ICM7228 Datasheet

8-Digit / Microprocessor- Compatible / LED Display Decoder Driver

No Preview Available !

ICM7228 pdf
Pinouts
ICM7228A (PDIP, SOIC)
COMMON ANODE
TOP VIEW
ICM7228
ICM7228B (PDIP, SOIC)
COMMON CATHODE
TOP VIEW
SEG c 1
SEG e 2
SEG b 3
DP 4
ID6 (HEXA/CODE B) 5
ID5 (DECODE) 6
ID7 (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
DIGIT 4 1
DIGIT 6 2
DIGIT 3 3
DIGIT 1 4
ID6 (HEXA/CODE B) 5
ID5 (DECODE) 6
ID7 (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 DP
ICM7228C (PDIP, SOIC)
COMMON ANODE
TOP VIEW
SEG c 1
SEG e 2
SEG b 3
DP 4
DA0 (DIGIT ADDRESS 0) 5
DA1 (DIGIT ADDRESS 1) 6
ID7 (INPUT DP) 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



Intersil Electronic Components Datasheet

ICM7228 Datasheet

8-Digit / Microprocessor- Compatible / LED Display Decoder Driver

No Preview Available !

ICM7228 pdf
Functional Block Diagram
ICM7228
ICM7228A, ICM7228B
ID0 - ID7
INPUT
DATA
8
8
ID4 - ID7
CONTROL
INPUTS MODE
41
WRITE
1
DECODE
HEXA/CODE B
CONTROL
LOGIC
SHUTDOWN
11
1
1
8-BYTE
STATIC
RAM
7
4
8 WRITE ADDRESS
COUNTER
8
1
8 READ
ADDRESS, DIGIT
MULTIPLEXER
HEXADECIMAL/
CODE B
7
DECODER
7
1
3
MULTIPLEX
OSCILLATOR
DECODE
NO-DECODE
7 DECIMAL
POINT
8
1
INTERDIGIT
BLANKING
8 SEGMENT
DRIVERS
8 DIGIT
DRIVERS
ICM7228C
HEXADECIMAL/
CODE B/
SHUTDOWN
1
ID0 - ID3
DA0 - DA2
ID7 DIGIT
DATA INPUT WRITE ADDRESS
5 13
THREE LEVEL
INPUT LOGIC
1
SHUTDOWN
8
WRITE ADDRESS
8-BYTE
COUNTER
1
STATIC
RAM
8
4
HEXADECIMAL/
CODE B
DECODER
1
8 READ
ADDRESS
MULTIPLEXER
5
MULTIPLEX
OSCILLATOR
8
7 DECIMAL
POINT
1
INTERDIGIT
BLANKING
8 SEGMENT
DRIVERS
8 DIGIT
DRIVERS
3




Part Number ICM7228
Description 8-Digit / Microprocessor- Compatible / LED Display Decoder Driver
Maker Intersil Corporation
Total Page 18 Pages
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ICM7228 pdf
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