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ST92F124 数据表(PDF) 400 Page - STMicroelectronics |
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ST92F124 数据表(HTML) 400 Page - STMicroelectronics |
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400 / 429 page ![]() 400/429 ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS J1850 BYTE LEVEL PROTOCOL DECODER TIMING TABLE (VDD = 5V ± 10%, TA = –40°C to +125°C, CLoad = 50pF, fINTCLK = 24MHz, unless otherwise specified) Note: (1) Values obtained with internal frequency at 24 MHz (INTCLK), with CLKSEL Register set to 23. (2) In Transmission Mode, symbol durations are compliant to nominal values defined by the J1850 Protocol Specifications. (3) All values are reported with a precision of ±1 µs. J1850 PROTOCOL TIMING Symbol Parameter Value Unit Note Receive Mode Transmission Mode Min Max Nominal TF Symbols Filtered 0 ≤ 7- µs (1)(2) TIB Invalid Bit Detected > 7 ≤ 34 - µs (1)(2) TP0 Passive Data Bit “0” > 34 ≤ 96 64 µs (1)(2)(3) TA0 Active Data Bit “0” > 96 ≤ 163 128 µs (1)(2)(3) TP1 Passive Data Bit “1” > 96 ≤ 163 128 µs (1)(2)(3) TA1 Active Data Bit “1” > 34 ≤ 96 64 µs (1)(2)(3) TNBS Short Normalization Bit > 34 ≤ 96 64 µs (1)(2)(3) TNBL Long Normalization Bit > 96 ≤ 163 128 µs (1)(2)(3) TSOF Start Of Frame Symbol > 163 ≤ 239 200 µs (1)(2)(3) TEOD End Of Data Symbol > 163 ≤ 239 200 µs (1)(2)(3) TEOF End Of Frame Symbol > 239 - 280 µs (1)(2)(3) TBRK Break Symbol > 239 - 300 µs (1)(2)(3) TIDLE Idle Symbol > 280 - 300 µs (1)(2)(3) T NBS T A1 T P0 T EOD T SOF VPWO T IDLE T EOF T EOD VPWO T IDLE T EOF T A0 T P1 T A1 T P0 T SOF T A0 T P1 T NBL 1 |
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