ICM7218 Intersil Corporation, ICM7218 Datasheet
ICM7218
Available stocks
Related parts for ICM7218
ICM7218 Summary of contents
Page 1
... Data Sheet 8-Digit LED Microprocessor-Compatible Multiplexed Display Decoder Driver The ICM7218 series of universal LED driver systems provide 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 ...
Page 2
... However, lead in the glass materials of electronic components are currently exempted per the RoHS directive. Therefore, ceramic dual inline packages with Pb-free termination finish are considered to be RoHS compliant. Pinouts ICM7218A (28 LD CERDIP) TOP VIEW Seg c ...
Page 3
... For this reason it is recommended that no inputs from sources operating on a different SS power supply be applied to the device before its own supply is established, and when using multiple supply systems the supply to the ICM7218 should be turned on first. 2. θ ...
Page 4
... ID7 (INPUT D.P.) NOTES the ICM7218C and D (random access versions) the HEXA/CODE B/SHUTDOWN input (Pin 9) has internal biasing resistors to hold when Pin 9 is open-circuited. These resistors consume power and result in a quiescent supply current (I and B devices do not have these biasing resistors and thus are not subject to this condition. ...
Page 5
... For all products, a choice of either HEXA or Code B decoding may be made. HEXA decoding provides 7-segment numeric plus six alpha characters while Code B provides a negative 5 ICM7218 sign (-), a blank (for leading zero blanking), certain useful alpha characters and all numeric formats. The four bit binary code is set up on inputs lD3-lD0, and decimal point data is set up on ID7 ...
Page 6
... Random Access Input Drive Considerations (ICM7218C/ and all digits on Control instructions are provided to the ICM7218C single three level input terminal (Pin 9), which operates independently of the WRITE pulse. Data can be written into memory on the lCM7218C/D by setting bit binary code (one of eight) on the digit address inputs and applying a low level to the WRITE pin ...
Page 7
... FIGURE 6. TIMING DIAGRAM FOR ICM7218C/D FIGURE 7. COMMON ANODE DISPLAY FUNCTIONAL TEST CIRCUIT 7 ICM7218 FN3159.2 February 15, 2007 ...
Page 8
... FIGURE 8. COMMON CATHODE DISPLAY FUNCTIONAL TEST CIRCUIT Typical Performance Characteristics 8 ICM7218 FN3159.2 February 15, 2007 ...
Page 9
... The display digits from both lCM7218s are interleaved to allow adjacent pairs of digits to be loaded simultaneously from a single 8 bit data bus. Decimal point information is supplied to the ICM7218s from the processor on port lines P26 and P27. No Decode Application The lCM7218 can also be used as a microprocessor based LED status panel driver. The microprocessor selected control word must include " ...
Page 10
... ICM7218 FIGURE 10. 16-DIGIT DISPLAY 10 FN3159.2 February 15, 2007 ...
Page 11
... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 11 ICM7218 F28.6 c1 LEAD FINISH ...