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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PC87570 датащи(PDF) 142 Page - National Semiconductor (TI) |
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PC87570 датащи(HTML) 142 Page - National Semiconductor (TI) |
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142 / 168 page  142 Device Specifications www.national.com tCSTRhi 19-21 SCL hold time After Start condition 8 * tCLK - tSCLri 8 * tCLK - tSCLri tCSTRsi 19-21 SCL setup time Before Start condition 8 * tCLK - tSCLri 8 * tCLK - tSCLri tDHCsi 19-21 Data high setup time Before SCL RE 2 * tCLK 2 * tCLK tDLCsi 19-20 Data low setup time Before SCL RE 2 * tCLK 2 * tCLK tSCLfi 19-19 SDA signal fall time 300 ns 300 ns tSCLri 19-19 SDA signal rise time 1 µs1 µs tSCLlowi 19-22 SCL low time After SCL FE 16 * tCLK 16 * tCLK tSCLhighi 19-22 SCL high time After SCL RE 16 * tCLK 16 * tCLK tSDAri 19-19 SDA signal fall time 300 ns 300 ns tSDAfi 19-19 SDA signal rise time 1 µs1 µs tSDAhi 19-22 SDA hold time After SCL FE 0 0 tSDAsi 19-22 SDA setup time Before SCL RE 2 * tCLK 2 * tCLK ACCESS.bus Output Signals tSCLhigho 19-22 SCL high time After SCL RE K * tCLK - 1 µs5 K * tCLK - 1 µs5 tSCLlowo 19-22 SCL low time After SCL FE K * tCLK - 1 µs5 K * tCLK - 1 µs5 tBUFo 19-20 Bus free time between Stop and Start condition tSCLhigho 6 1 µs tSCLhigho 6 1 µs tCSTOso 19-20 SCL setup time Before Stop condition tSCLhigho 6 1 µs tSCLhigho 6 1 µs tCSTRho 19-21 SCL hold time After Start condition tSCLhigho 6 1 µs tSCLhigho 6 1 µs tCSTRso 19-21 SCL setup time Before Start condition tSCLhigho 6 1 µs tSCLhigho 6 1 µs tDHCso 19-21 Data high setup time Before SCL RE tSCLhigho 6 - tSDAro 1 µs tSCLhigho 6 - tSDAro 1 µs tDLCso 19-20 Data low setup time Before SCL RE tSCLhigho 6 - tSDAfo 1 µs tSCLhigho 6 - tSDAfo 1 µs tSCLfo 19-19 SDA signal fall time 300 ns7 300 ns7 tSCLro 19-19 SDA signal rise time 1 µs1 µs tSDAfo 19-19 SDA signal fall time 300 ns7 300 ns7 tSDAro 19-19 SDA signal rise time 1 µs1 µs tSDAho 19-22 SDA hold time After SCL FE 7 * tCLK - tSCLfo 7 * tCLK - tSCLfo Symbol Figure Description Reference Conditions VCC = 5 V 10% VCC = 3.3 V ± 10% Min Max Min Max |
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