ICM7218 Datasheet | Intersil

Data Sheet September 15, 2015 FN3159.3 8-Digit LED Microprocessor-patible Multiplexed Display Decoder Driver The ICM7218 series of universal LED driver systems provide, in a single package, all the circuitry necessary to interface most mon 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 mon-cathode or mon-anode displays. The l CM7218A and 1CM7218B feature two control lines (WRITE and MODE) which write either 4 bits of control information (DATA ING, 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 l CM7218D 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. Features - Microprocessor patible - 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 - mon Anode and mon 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 - Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” ID0-ID7 INPUT DATA ICM7218A MON ANODE ICM7218B MON CATHODE ID4-ID7 MODE...