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ICM7228CIJI Datasheet(PDF) 8 Page - Intersil Corporation |
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ICM7228CIJI Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 17 page 9-24 FIGURE 7. COMMON CATHODE DIGIT DRIVER IDIG vs VDIG FIGURE 8. COMMON CATHODE SEGMENT DRIVER ISEG vs (VDD - VSEG) TABLE 1. ICM7228A PIN ASSIGNMENTS AND DESCRIPTIONS PIN NO. NAME FUNCTION DESCRIPTION 1 SEG c Output LED Display Segments c, e, b and Decimal Point Drive Lines. 2 SEG e 3 SEG b 4DP 5 ID6, (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. 6 ID5, (DECODE) Input When “MODE” Low: Display Data Input, Bit 6. When “MODE” High: Control Bit, Decode/No Decode Selection: High, No Decode; Low, Decode. 7 ID7, (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. 8 WRITE Input Data Input Will Be Written to Control Register or Display RAM on Rising Edge of WRITE. 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 Typical Performance Curves (Continued) VDIG (V) 300 200 100 0 0 1.0 2.0 3.0 4.0 5.0 -55oC 25oC 125oC VDD-VSEG (V) 0 10 20 30 40 50 0 1.0 2.0 3.0 4.0 5.0 -55oC 25oC 125oC ICM7228 |
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