Description
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 driv
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
PIN CONFIGURATION
ICM7228A (PDIP, SOIC) COMMON ANODE
TOP VIEW
ICM7228B (PDIP, SOIC) COMMON CATHODE
TOP VIEW
ICM7228C (PDIP, SOIC) COMMON ANODE
TOP VIEW
P/N Temp（0℃） Package
ICM7228AIBI -40 to 85 SOIC28
ICM7228AIBIZ -40 to 85 SOIC28
ICM7228AIPI -40 to 85 PDIP28
ICM7228AIPIZ -40 to 85 PDIP28
ICM7228BIBI -40 to 85 SOIC28
ICM7228BIBIZ -40 to 85 SOIC28
ICM7228BIPI -40 to 85 PDIP28
ICM7228BIPIZ -40 to 85 PDIP28
ICM7228CIBI -40 to 85 SOIC28
FROM: Company Name: Aunytor Electronic (HK) Co.,Ltd
Contact Person: Charlotte
Skype: Aunytor
whatsapp：+86 13537622113
Email: carrot@aunytorchips.com