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ICM7228AIJI Datasheet

  • ICM7228AIJI

  • 8-Digit, Microprocessor- Compatible, LED Display Decoder Dri...

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ICM7228
August 1997
8-Digit, Microprocessor-
Compatible, LED Display Decoder Driver
Description
The Intersil ICM7228 display driver interfaces microproces-
sors 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鈥檚 display
RAM in sequential 8-digit update or in single-digit update for-
mat. Data is written to the ICM7228C and ICM7228D display
RAM in parallel random access format. The ICM7228A and
ICM7228C drive common anode displays. The ICM7228B and
ICM7228D drive 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
鈥?Improved 2nd Source to Maxim ICM7218
鈥?Fast Write Access Time of 200ns
鈥?Multiple Microprocessor Compatible Versions
鈥?Hexadecimal, Code B and No Decode Modes
鈥?Individual Segment Control with 鈥淣o Decode鈥?Feature
鈥?Digit and Segment Drivers On-Chip
鈥?Non-Overlapping Digits Drive
鈥?Common Anode and Common Cathode LED Versions
鈥?Low Power CMOS Architecture
鈥?Single 5V Supply
Applications
鈥?Instrumentation
鈥?Test Equipment
鈥?Hand Held Instruments
鈥?Bargraph Displays
鈥?Numeric and Non-Numeric Panel Displays
鈥?High and Low Temperature Environments where LCD
Display Integrity is Compromised
Ordering Information
PART NUMBER
ICM7228AIPI
ICM7228BIPI
ICM7228CIPI
ICM7228DIPI
ICM7228AIJI
ICM7228BIJI
ICM7228CIJI
ICM7228DIJI
ICM7228AIBI
ICM7228BIBI
ICM7228CIBI
ICM7228DIBI
ICM7228AMJI883B
ICM7228BMJI883B
ICM7228CMJI883B
ICM7228DMJI883B
DATA ENTRY PROTOCOL
Sequential
Sequential
Random
Random
Sequential
Sequential
Random
Random
Sequential
Sequential
Random
Random
Sequential
Sequential
Random
Random
DISPLAY TYPE
Common Anode
Common Cathode
Common Anode
Common Cathode
Common Anode
Common Cathode
Common Anode
Common Cathode
Common Anode
Common Cathode
Common Anode
Common Cathode
Common Anode
Common Cathode
Common Anode
Common Cathode
TEMP. RANGE (
o
C)
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-55 to 125
-55 to 125
-55 to 125
-55 to 125
PACKAGE
28 Ld PDIP
28 Ld PDIP
28 Ld PDIP
28 Ld PDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld SOIC
28 Ld SOlC
28 Ld SOlC
28 Ld SOlC
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
PKG. NO.
E28.6
E28.6
E28.6
E28.6
F28.6
F28.6
F28.6
F28.6
M28.3
M28.3
M28.3
M28.3
F28.6
F28.6
F28.6
F28.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
漏
Intersil Corporation 1999
File Number
3160.1
9-17

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