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ICM7228AIPIZ Datasheet(PDF) 7 Page - Intersil Corporation |
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ICM7228AIPIZ Datasheet(HTML) 7 Page - Intersil Corporation |
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7 / 19 page  7 ICM7228 Timing Diagrams FIGURE 1. ICM7228A/B WRITE CYCLE FIGURE 2. ICM7228A/B SEQUENTIAL 8-DIGIT RAM UPDATE FIGURE 3. ICM7228C WRITE CYCLE FIGURE 4. DISPLAY DIGITS MULTIPLEX (COMMON ANODE DISPLAY) tMS tWL tDS tMH MODE INPUT VALID DATA tDH tWH WRITE DECODE/NO DECODE? ID5 (D8) (D1) MODE CONTROL WORD TYPE OF DECODER?ID6 DECODE/NO DECODE? ID5 SHUTDOWN?ID4 DATA COMING ID7 CONTROL WORD TYPE OF DECODER?ID6 SHUTDOWN? ID4 DATA COMING ID7 DON’T CARE WRITE DATA 8 PULSES WRITE VALID DATA VALID tWL tWH tAS tAH tDH tDS DATA WRITE DIGIT ADDRESS DAO-DAZ INTERDIGIT BLANKING INTERNAL SIGNAL TYPICAL DIGITS OUTPUT PULSES 10 s (TYP) FREE RUNNING 320 s (TYP) FREE RUNNING (PER DIGIT) INTERDIGIT BLANKING D2 D5 D1 D7 D8 D6 D4 D3 |
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