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ICM7218AIJIR5254 Datasheet(PDF) 4 Page - Intersil Corporation |
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ICM7218AIJIR5254 Datasheet(HTML) 4 Page - Intersil Corporation |
4 / 11 page 4 FN3159.3 September 15, 2015 Digital Address Hold Time tAH 7218C, 7218D 0 - - ns Data Input Impedance ZIN 5-10pF Gate Capacitance - 1010 - Electrical Specifications VDD = 5V, VSS = 0V, TA = +25°C, Display Diode Drop = 1.7V (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS Pin Descriptions INPUT TERMINAL LOGIC LEVEL FUNCTION ICM7218A AND ICM7218B WRITE 8 High Input Not Loaded Low Input Loaded MODE 9 High Load Control Bits on Write Pulse Low Load Input Data on Write Pulse ID4 (SHUTDOWN) MODE High 10 High Normal Operation Low Shutdown (Oscillator, Decoder and Display Disabled) ID5 (DECODE) 6 High No Decode Low Decode ID6 (HEXA/CODE B) 5 High Hexadecimal Decoding Low Code B Decoding ID7 (DATA COMING) 7 High Data Coming No Data Coming Low ID0-ID7 MODE Low 11, 12, 13, 14, 5, 6, 10, 7 Display Data Inputs (Notes 4, 5) ICM7218C AND ICM7218D WRITE 8 High Input Not Loaded into Memory Low Input Loaded into Memory HEXA/CODE B/ SHUTDOWN 9 (Note 3) High Hexadecimal Decoding Floating Code B Decoding Low Shutdown (Oscillator, Decoder and Display Disabled) DA0 - DA2 10, 6, 5 Digit Address Inputs ID0 - ID3 14, 13, 11, 12 Display Data Inputs ID7 (INPUT D.P.) 7 Decimal Point Input NOTES: 3. In the ICM7218C and D (random access versions) the HEXA/CODE B/SHUTDOWN input (Pin 9) has internal biasing resistors to hold it at VDD/2 when Pin 9 is open-circuited. These resistors consume power and result in a quiescent supply current (IQ) of typically 50. The ICM7218A, and B devices do not have these biasing resistors and thus are not subject to this condition. 4. ID0-ID3 = Don’t Care when writing control data. ID4-ID6 = Don’t Care when writing Hex/Code B data. ID7 = Decimal Point data. (The display blanks on ICM7218A/B versions when writing in data). 5. In the No Decode format, “Ones” represents “on” segments for all inputs except for the Decimal Point, where “Zero” represents an “on” segment (i.e., segments are positive true, decimal point is negative true). 6. Common Anode segment drivers and Common Cathode Digit Drivers have 20k pullup resistors. } Control Word ICM7218 |
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