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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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UPD4990AC 데이터시트(PDF) 13 Page - NEC |
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UPD4990AC 데이터시트(HTML) 13 Page - NEC |
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13 / 20 page  13 µPD4990A DATA INPUT/OUTPUT TIMING DIAGRAM Figure 4. Note: Reading-in timing of CPU (Trailing edge of CLK). TIMING DIAGRAM OF DATA INPUT AND OUTPUT Figure 5. CLK DATA IN DATA OUT OUT ENBL Written-in data LSB ("H") appears at output. '86 November 25 (Sat.) 2 hours 23 minutes 49 seconds. '70 July 16 (Sun.) 2 hours 24 minutes 35 seconds. "1" year "10" year "1" s. "1" min. "10" s. "1" year "10" year "1" s. "1" min. "10" s. INPUT TIMING OUTPUT TIMING 0123456789 1011 4041424344454647 Command (C2, C1, C0) is set to (1, 1, 1). Command (C3', C2', C0') is set to [0001] (Register Shift Mode). CS = "H" VIH VIL VIH CLK DATA OUT DATA IN VIL VOH VOL tdC-O tdC-O tDSU tDHLD µ µ µ : : : 1 s MAX. (RL = 33 k Ω, CL = 25 pF) 1 s MIN. 1 s MIN. tDHLD tDSU |
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