DESCRIPTION

· The Intersil ICM7228 is an 8-digit, microprocessor-compatible LED display decoder driver.
· It interfaces microprocessors to an 8-digit, 7-segment numeric LED display.
· Includes two types of 7-segment decoders, multiplex scan circuitry, LED segment and digit drivers, and an 8-byte static memory as display RAM.
· Supports sequential 8-digit update or single-digit update formats for ICM7228A and ICM7228B, and parallel random access format for ICM7228C.
· ICM7228A and ICM7228C drive common anode displays; ICM7228B drives common cathode displays.
· All versions can display RAM data in Hexadecimal or Code B format.
· ICM7228A and ICM7228B feature a No Decode mode for individual segment control, enabling bargraph and irregular display formats.
· Acts as an alternative to Maxim ICM7218 and Intersil ICM7218 display drivers, with potential software incompatibility due to additional single-digit access mode in ICM7228A/B.

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.
· On-chip digit and segment drivers.
· Non-overlapping digits drive.
· Common anode and common cathode LED versions.
· Low power CMOS architecture.
· Single 5V supply operation.

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.