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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M29F400T датащи(PDF) 20 Page - STMicroelectronics |
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M29F400T датащи(HTML) 20 Page - STMicroelectronics |
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20 / 34 page  AI01869C E G W A0-A17/ A–1 DQ0-DQ7/ DQ8-DQ15 VALID VALID VCC tVCHEL tWHEH tWHWL tELWL tAVWL tWHGL tWLAX tWHDX tAVAV tDVWH tWLWH tGHWL RB tWHRL Figure 7. Write AC Waveforms, W Controlled Note: Address are latched on the falling edge of W, Data is latched on the rising edge of W. POWER SUPPLY Power Up The memory Command Interface is reset on power up to Read Array. Either E or W must be tied to VIH during Power Up to allow maximum security and the possibility to write a command on the first rising edge of E and W. Any write cycle initiation is blocked when Vcc is below VLKO. Supply Rails Normal precautions must be taken for supply volt- age decoupling; each device in a system should have the VCC rail decoupled with a 0.1 µF capacitor close to the VCC and VSS pins. The PCB trace widths should be sufficient to carry the VCC pro- gram and erase currents required. 20/34 M29F400T, M29F400B |
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