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L9680 Datasheet(PDF) 265 Page - STMicroelectronics |
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L9680 Datasheet(HTML) 265 Page - STMicroelectronics |
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265 / 286 page  DS11615 Rev 7 265/286 L9680 Electrical characteristics 285 Table 63. PSI-5 satellite transceiver - AC specifications No Symbol Parameter Conditions Min Typ Max Unit 1 TBit_125k Bit time (125 kbps mode) At the sensor connector 7.6 8 8.4 μs 2 TBit_189k Bit time (189 kbps mode) At the sensor connector 5 5.3 5.6 μs 3 TFLT_OCTH_PSI5 Over Current Detection deglitch filter time Normal operation 500 - 600 μs 4 TBLK_OCTH_PSI5 Over Current Detection Blanking Time At interface power on (BLKTxSEL = 0) 4.6 - 5.4 ms 5 At interface power on (BLKTxSEL = 1) 9.4 - 10.8 ms 6 TSTBTH Reverse Battery Blocking Enable Time - 12 - 16 μs 7 t0 Reference time @0.5 V on top of V(RSUx) Syncboost = 12 V, 14.75 V, 18 V and 35 V - 0 - - 8 t1 Start delay time From t0 to SATSYNC Syncboost = 12 V, 14.75 V, 18 V and 35 V -3 - - μs 9 t2 Sync signal sustain start @ VRSU+3.8 V relative to t0 Syncboost = 12 V, 14.75 V, 18 V and 35 V - - 7 μs 10 SRRISE_RSU Sync slope rising slew rate 0.43 - 1.5 V/μs 11 SRFALL_RSU Sync slope falling slew rate -1.5 - - V/μs 12 t3 Sync signal sustain time Design Info 16 - - µs 13 t4 Discharge time limit Design Info - - 35 µs 14 TBLANK Decoder blanking time (decoding disabled) Design Info - - 42 μs 15 TSYNC Time between two sync pulses Design Info 400 500 - µs 16 TFLT_PSI5_HF PSI5 Deglitch filter time F = 189 kbaud Configurable by SPI (4bits) 1 - 2 μs 17 TFLT_PSI5_LF PSI5 Deglitch filter time F = 125 kbaud Configurable by SPI (4bits) 1.5 - 2.5 μs |
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