ICM7218DIJIR5254 Datasheet

PMIC - Display Drivers


The ICM7218DIJIR5254 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 ICM7218DIJIR5254 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. ICM7218DIJIR5254 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


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