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R8C/20 Datasheet(PDF) 431 Page - Renesas Technology Corp |
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R8C/20 Datasheet(HTML) 431 Page - Renesas Technology Corp |
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431 / 501 page  R8C/20 Group, R8C/21 Group 20. Electrical Characteristics Rev.2.00 Aug 27, 2008 Page 415 of 458 REJ09B0250-0200 NOTES: 1. VCC = 2.7 to 5.5 V, VSS = 0 V at Topr = -40 to 85 °C (J version) / -40 to 125°C (K version), unless otherwise specified. 2. 1tCYC = 1/f1(s) Table 20.12 Timing Requirements of Clock Synchronous Serial I/O with Chip Select(1) Symbol Parameter Conditions Standard Unit Min. Typ. Max. tSUCYC SSCK clock cycle time 4 −− tCYC(2) tHI SSCK clock “H” width 0.4 − 0.6 tSUCYC tLO SSCK clock “L” width 0.4 − 0.6 tSUCYC tRISE SSCK clock rising time Master −− 1 tCYC(2) Slave −− 1 µs tFALL SSCK clock falling time Master −− 1 tCYC(2) Slave −− 1 µs tSU SSO, SSI data input setup time 100 −− ns tH SSO, SSI data input hold time 1 −− tCYC(2) tLEAD SCS setup time Slave 1tCYC + 50 −− ns tLAG SCS hold time Slave 1tCYC + 50 −− ns tOD SSO, SSI data output delay time −− 1 tCYC(2) tSA SSI slave access time −− 1tCYC + 100 ns tOR SSI slave out open time −− 1tCYC + 100 ns |
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