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ICM7228BIBIZ Datasheet(PDF) 8 Page - Intersil Corporation |
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ICM7228BIBIZ Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 18 page 8 ICM7228 9 MODE Input Selects Data to Be Loaded to Control Register or Display RAM: High, Loads Control Register; Low, Loads Display RAM. 10 ID4, (SHUTDOWN) Input When “MODE” Low: Display Data Input, Bit 5. When “MODE” High: Control Bit, Low Power Mode Select: High, Normal Operation; Low, Oscillator and Display Disabled. 11 ID1 Input When “MODE” Low: Display Data Input, Bit 2. When “MODE” High and “ID7 (DATA COMING)” Low: Digit Address, Bit 2, Single Digit Update Mode. 12 ID0 Input When “MODE” Low: Display Data Input, Bit 1. When “MODE” High and “ID7 (DATA COMING)” Low: Digit Address, LSB, Single Digit Update Mode. 13 ID2 Input When “MODE” Low: Display Data Input, Bit 3. When “MODE” High and “ID7 (DATA COMING)” Low: Digit Address, MSB, Single Digit Update Mode. 14 ID3 Input When “MODE” Low: Display Data Input, Bit 4. When “MODE” High: RAM Bank Select (Decode Modes Only): High, RAM Bank A; Low, RAM Bank B 15 DIGIT 1 Output LED Display Digits 1, 2, 5 and 8 Drive Lines. 16 DlGlT 2 17 DIGIT 5 18 DlGlT 8 19 VDD Supply Device Positive Power Supply Rail. 20 DIGIT 4 Output LED Display Digits 4, 7, 6 and 3 Drive Lines. 21 DlGlT 7 22 DlGlT 6 23 DIGlT 3 24 SEG f Output LED Display Segments f, d, g and a Drive Lines. 25 SEG d 26 SEG g 27 SEG a 28 VSS Supply Device Ground or Negative Power Supply Rail. TABLE 2. ICM7228B PIN ASSIGNMENTS AND DESCRIPTIONS PIN NO. NAME FUNCTION DESCRIPTION 1 DIGIT 4 Output LED Display Digits 4, 6, 3 and 1 Drive Lines. 2 DlGlT 6 3 DIGIT 3 4 DlGlT 1 5ID6, (HEXA/CODE B) Input When “MODE” Low: Display Data Input, Bit 7. When “MODE” High: Control Bit, Decoding Scheme Selection: High, Hexadecimal Decoding; Low, Code B Decoding. 6ID5, (DECODE) Input When “MODE” Low: Display Data Input, Bit 6. When “MODE” High: Control Bit, Decode/No Decode Selection: High, No Decode; Low, Decode. 7ID7, (DATA COMING) Input When “MODE” Low: Display Data Input, Bit 8, Decimal Point Data. When “MODE” High: Control Bit, Sequential Data Update Select: High, Data Coming; Low, No Data Coming. TABLE 1. ICM7228A PIN ASSIGNMENTS AND DESCRIPTIONS (Continued) PIN NO. NAME FUNCTION DESCRIPTION |
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