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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PSD4235G2 датащи(PDF) 78 Page - STMicroelectronics |
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PSD4235G2 датащи(HTML) 78 Page - STMicroelectronics |
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78 / 89 page  PSD4235G2 78/89 Table 66. Write Timing Note: 1. Any input used to select an internal PSD function. 2. In multiplexed mode, latched address generated from ADIO delay to address output on any port. 3. WR has the same timing as E, DS, LDS, UDS, WRL, and WRH signals. 4. Assuming data is stable before active write signal. 5. Assuming write is active before data becomes valid. 6. tWHAX2 is the address hold time for DPLD inputs that are used to generate Sector Select signals for internal PSD memory. 7. tWHAX is 6 ns when writing to the Output Macrocell Registers AB and BC. Symbol Parameter Conditions -70 -90 Unit Min Max Min Max tLVLX ALE or AS Pulse Width 15 20 ns tAVLX Address Setup Time (Note 1) 46 ns tLXAX Address Hold Time (Note 1) 78 ns tAVWL Address Valid to Leading Edge of WR (Notes 1,3) 815 ns tSLWL CS Valid to Leading Edge of WR (Note 3) 12 15 ns tDVWH WR Data Setup Time (Note 3) 25 35 ns tWHDX WR Data Hold Time (Note 3,7) 45 ns tWLWH WR Pulse Width (Note 3) 28 35 ns tWHAX1 Trailing Edge of WR to Address Invalid (Note 3) 68 ns tWHAX2 Trailing Edge of WR to DPLD Address Invalid (Note 3,6) 00 ns tWHPV Trailing Edge of WR to Port Output Valid Using I/O Port Data Register (Note 3) 27 30 ns tDVMV Data Valid to Port Output Valid Using Macrocell Register Preset/Clear (Notes 3,5) 42 55 ns tAVPV Address Input Valid to Address Output Delay (Note 2) 20 25 ns tWLMV WR Valid to Port Output Valid Using Macrocell Register Preset/Clear (Notes 3,4) 48 55 ns |
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