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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPD16680 датащи(PDF) 38 Page - NEC |
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UPD16680 датащи(HTML) 38 Page - NEC |
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38 / 44 page  Data Sheet S12694EJ2V0DS00 38 µµµµPD16680 Required conditions for timing (Unless otherwise specified, TA = –40 to +85 °C, VDD = 2.7 to 3.3 V) 1. Common Parameter Symbol Conditions MIN. TYP. MAX. Unit Clock frequency fOSC OSCIN external clock 20 32 50 kHz High-level clock pulse width tWHC1 OSCIN external clock 10 25 µs Low -level clock pulse width tWLC1 OSCIN external clock 10 25 µs High-level clock pulse width tWHC2 OSCBRI external clock 400 ns Low -level clock pulse width tWLC2 OSCBRI external clock 400 ns Rise/Fall time tr, tf OSCBRI external clock 100 ns Reset pulse width tWRE /RESET pin 50 µs Remark The TYP. value is a reference value when TA =+25 °C. 2. Serial interface Parameter Synbol Conditions MIN. TYP. MAX. Unit Shift clock cycle tCYK SCK 900 ns High-level shift clock pulse width tWHK SCK 295 ns Low-level shift clock pulse width tWLK SCK 295 ns Shift clock hold time tHSTBK STB ↓ → SCK↓ 400 ns Data setup time tDS1 DATA → SCK↑ 40 ns Data hold time tDH1 SCK ↑ → DATA 40 ns STB hold time tHKSTB SCK ↑ → STB↑ 400 ns STB pulse width tWSTB 210 ns Wait time Note tWAIT 8th CLK ↑ →1st CLK↓ 100 ns Note See 11.1.3 Transmission (Command/Data read). 3. Parallel interface Parameter Symbol Conditions MIN. TYP. MAX. Unit Enable cycle time tCYCE E ↑ → E↑ 900 ns High-level enable pulse width tWHE E 295 ns Low-level enable pulse width tWLE E 295 ns STB pulse width tWSTB 210 ns STB hold time tHKSTB 400 ns Enable hold time tHSTBK 400 ns Data setup time tDS2 D0 to D7 → E↑ 40 ns Data hold time tDH2 D0 to D7 → E↓ 40 ns |
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