ICM7218: 8-Digit LED Microprocessor-Compatible Multiplexed Display Decoder Driver

The ICM7218 series of universal LED driver systems provide, in a single package, all the circuitry necessary to interface most common microprocessors or digital systems to an LED display. Included on-chip are an 8-byte static display memory, two types of 7-segment decoders, multiplex scan circuitry, and high current digit and segment drivers for either common cathode or common anode displays.

The lCM7218A and 1CM7218B feature two control lines (WRITE and MODE) which write either 4 bits of control information (DATA COMING, SHUTDOWN, DECODE and HEXA/CODE B) or 8 bits of display input data. Display data is automatically sequenced into the 8-byte internal memory on successive positive going WRITE pulses. Data may be displayed either directly or decoded in Hexadecimal or Code B formats.

The ICM7218C and lCM7218D feature two control lines (WRITE and HEXA/CODE B/SHUTDOWN), 4 separate display data input lines, and 3 digit address lines. Display data is written into the internal memory by setting up a digit address and strobing the WRITE line low. Only Hexadecimal and Code B formats are available for display outputs.

Key Features
  • Microprocessor compatible
  • Total circuit integration on-chip includes:
    • Digit and segment drivers
    • All multiplex scan circuitry
    • 8-Byte static display memory
    • 7-Segment Hexadecimal and Code B decoders
  • Output drive suitable for LED displays directly
  • Common anode and common cathode versions
  • Single 5V supply required
  • Data retention to 2V Supply
  • Shutdown feature - turns off display and puts chip into low power dissipation mode
  • Sequential and random access versions
  • Decimal point drive on each digit Related Literature
Typical Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN054: Display Driver Family Combines Convenience of Use with Microprocessor InterfaceabilityPDF13 Nov 2014306 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
ICM7218 DatasheetPDF17 May 2016378 KB
Tech Briefs
TitleTypeUpdatedSizeOther Languages
TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)PDF13 Jan 201529 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ICM7218AIJI28 Ld CERDIP8.0928N/ANA
ICM7218AIJIR525428 Ld CERDIP8.0928N/ANARoHS
ICM7218BIJI28 Ld CERDIP8.0928N/ANA
ICM7218BIJIR525428 Ld CERDIP8.0928N/ANARoHS
ICM7218CIJI28 Ld CERDIP8.0928N/ANA
ICM7218CIJIR525428 Ld CERDIP8.0928N/ANARoHS
ICM7218DIJI28 Ld CERDIP8.0928N/ANA
ICM7218DIJIR525428 Ld CERDIP8.0928N/ANARoHS
ICM7218 Datasheet 17 May 2016
28 Ld CERDIP HI-507
AN054: Display Driver Family Combines Convenience of Use with Microprocessor Interfaceability 13 Nov 2014
TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) 13 Jan 2015