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MFG:HARRIS
Part Number: ICM7228
MFG: HARRIS
Description: The Intersil ICM7228 display driver interfaces microprocessors to an 8-digit, 7-segment, numeric LED display. Included ...
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ICM7228
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DataSheet
General Description
ICM7228 General 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.
ICM7228 Maximum Ratings
Supply Voltage (VDD - VSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V
Digit Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA
Segment Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Input Voltage (Note 1) (Any Terminal) . . . . . . . . . . . . . . . . . . . . (VSS-0.3V)<VIN<(VDD +0.3V)
Digit Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA
Segment Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Input Voltage (Note 1) (Any Terminal) . . . . . . . . . . . . . . . . . . . . (VSS-0.3V)<VIN<(VDD +0.3V)
ICM7228 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
• 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
ICM7228 Typical Application
• 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
• Test Equipment
• Hand Held Instruments
• Bargraph Displays
• Numeric and Non-Numeric Panel Displays
• High and Low Temperature Environments where LCD Display Integrity is Compromised
ICM7228 Connection Diagram
ICM7228
PDF/DataSheet Download
- Datasheet: ICM7228
- File Size: 471267 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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ICM7228 Relative Products
ICM7226B
The ICM7226B is a fully integrated Universal Counter and LED display driver. It combines a high frequency oscillator, a decade timebase counter, an 8-decade data counter and latches, a 7-segment decoder, digit multiplexer and segment and digit drivers which ...
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