ICM7218
ICM7218 is 8-Digit LED Microprocessor-Compatible Multiplexed Display Decoder Driver manufactured by Renesas.
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 WRITE 8 CONTROL
INPUTS
DECODE
CONTROL
SHUTDOWN
HEXA/CODE B
LOGIC
8-BYTE
WRITE ADDRESS
STATIC...