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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS7C33256PFS18A датащи(PDF) 4 Page - Alliance Semiconductor Corporation |
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AS7C33256PFS18A датащи(HTML) 4 Page - Alliance Semiconductor Corporation |
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4 / 11 page  AS7C33256PFS16A AS7C33256PFS18A ® 3/14/01; V.1.0 Alliance Semiconductor P. 4 of 11 Synchronous truth table Key: X = Don’t Care, L = Low, H = High. 1See “Write enable truth table” on page 2 for more information. 2 Q in flow through mode 3 For write operation following a READ, OE must be HIGH before the input data set up time and held HIGH throughout the input hold time. Recommended operating conditions CE0 CE1 CE2 ADSP ADSC ADV WEn1 OE Address accessed CLK Operation DQ H X X X L X X X NA L to H Deselect Hi −Z L L X L X X X X NA L to H Deselect Hi −Z L L X H L X X X NA L to H Deselect Hi −Z L X H L X X X X NA L to H Deselect Hi −Z L X H H L X X X NA L to H Deselect Hi −Z L H L L X X X L External L to H Begin read Hi −Z2 L H L L X X X H External L to H Begin read Hi −Z L H L H L X F L External L to H Begin read Hi −Z2 L H L H L X F H External L to H Begin read Hi −Z X X X H H L F L Next L to H Cont. read Q X X X H H L F H Next L to H Cont. read Hi −Z X X X H H H F L Current L to H Suspend read Q X X X H H H F H Current L to H Suspend read Hi −Z H X X X H L F L Next L to H Cont. read Q H X X X H L F H Next L to H Cont. read Hi −Z H X X X H H F L Current L to H Suspend read Q H X X X H H F H Current L to H Suspend read Hi −Z L H L H L X T X External L to H Begin write D3 X X X H H L T X Next L to H Cont. write D H X X X H L T X Next L to H Cont. write D X X X H H H T X Current L to H Suspend write D H X X X H H T X Current L to H Suspend write D Parameter Symbol Min Nominal Max Unit Supply voltage VDD 3.135 3.3 3.6 V VSS 0.0 0.0 0.0 3.3V I/O supply voltage VDDQ 3.135 3.3 3.6 V VSSQ 0.0 0.0 0.0 2.5V I/O supply voltage VDDQ 2.35 2.5 2.9 V VSSQ 0.0 0.0 0.0 Input voltages† Address and control pins VIH 2.0 – VDD + 0.3 V VIL –0.5* * VIL min = –2.0V for pulse width less than 0.2 × tRC. † Input voltage ranges apply to 3.3V I/O operation. For 2.5V I/O operation, contact factory for input specifications. –0.8 I/O pins VIH 2.0 – VDDQ + 0.3 V VIL –0.5* –0.8 Ambient operating temperature TA 0– 70 °C |
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