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
Comparison
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
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
Buy Now
|
SOICW | Tube | 3 | 10.97 | Get Samples, |
ICM7228AIPIZ Active Samples Available
Buy Now
|
PDIP | Tube | Not Applicable | 12.19 | Get Samples, |
ICM7228BIBIZ Active Samples Available
Buy Now
|
SOICW | Tube | 3 | 12.65 | Get Samples, |
ICM7228BIPIZ Active Samples Available
Buy Now
|
PDIP | Tube | Not Applicable | Get Samples, | |
ICM7228CIBIZ Active Samples Available
Buy Now
|
SOICW | Tube | 3 | 10.97 | Get Samples, |
ICM7228CIPIZ Active Samples Available
Buy Now
|
PDIP | Tube | Not Applicable | 8.537 | Get Samples, |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product