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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM9830 датащи(PDF) 9 Page - National Semiconductor (TI) |
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LM9830 датащи(HTML) 9 Page - National Semiconductor (TI) |
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9 / 45 page  9 http://www.national.com Figure 5: µP Mode Address Latch CS (INIT) RD (AUTOFEED) Address D0 - D7 WR (STROBE) ALE (SELECTIN) tALE SETUP tALE tALE HOLD Data Figure 6: µP Mode Write CS (INIT) RD (AUTOFEED) D0 - D7 WR (STROBE) ALE (SELECTIN) tWR SETUP tWR HOLD tWR NOTE: CS and WR are ORed together. tWR SETUP and tWR HOLD refer to the first rising edge of CS or WR, whichever goes high first. Data Figure 7: µP Mode Read CS (INIT) RD (AUTOFEED) D0 - D7 WR (STROBE) ALE (SELECTIN) tRD ACCESS tRD TRI-STATE NOTE: CS and RD are ORed together. tRD ACCESS begins when both CS and WR go low. tRD TRI-STATE begins when either CS or WR go high Figure 8: SRAM Write WR Address Data tWR DATA HOLD A0-A17 DB0-DB7 tWR ADDR HOLD tWR DATA SETUP tWR tWR R ADDR SETUP tWR F ADDR SETUP Figure 9: SRAM Read RD Address Data A0-A17 DB0-DB7 Address Data Note: RD will stay low during consecutive read operations. 0.5MCLK 0.5MCLK tRD SETUP |
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