8-Digit, Microprocessor-Compatible, LED Display Decoder Driver
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Overview
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 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
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
Documentation
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Date | |
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| PDF 904 KB | Datasheet | |
| PDF 200 KB | Price Increase Notice | |
| PDF 4.86 MB 日本語 | Product Change Notice | |
| PDF 3.74 MB 日本語 | Product Change Notice | |
| PDF 227 KB | Price Increase Notice | |
| PDF 1.46 MB 日本語 | Product Change Notice | |
| PDF 98 KB | Product Change Notice | |
| PDF 5.23 MB | Brochure | |
| PDF 1.32 MB | Brochure | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
ICM7228AIBIZ Active Samples Available |
SOICW | Tube | 1040 | Get Samples, |
ICM7228AIPIZ Active Samples Available |
PDIP | Tube | 858 | Get Samples, |
ICM7228BIBIZ Active Samples Available |
SOICW | Tube | 1560 | Get Samples, |
ICM7228BIPIZ Active Samples Available |
PDIP | Tube | 1716 | Get Samples, |
ICM7228CIBIZ Active Samples Available |
SOICW | Tube | 780 | Get Samples, |
ICM7228CIPIZ Active Samples Available |
PDIP | Tube | 1287 | Get Samples, |
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Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| ICM7228AIBIZ | Availability |
| ICM7228AIPIZ | Availability |
| ICM7228BIBIZ | Availability |
| ICM7228BIPIZ | Availability |
| ICM7228CIBIZ | Availability |
| ICM7228CIPIZ | Availability |