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ATA6628 Datasheet(PDF) 26 Page - ATMEL Corporation |
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ATA6628 Datasheet(HTML) 26 Page - ATMEL Corporation |
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26 / 36 page  26 9117E–AUTO–07/10 ATA6628/ATA6630 [Preliminary] 10 Internal Timers 10.1 Dominant time for wake-up via LIN bus VLIN = 0V LIN tbus 30 90 150 µs A 10.2 Time delay for mode change from Fail-safe into Normal Mode via EN pin V EN = VCC EN t norm 515 20 µs A 10.3 Time delay for mode change from Normal Mode to Sleep Mode via EN pin VEN = 0V EN tsleep 27 12 µs A 10.4 TXD dominant time-out time VTXD = 0V TXD tdom 27 55 70 ms A 10.5 Time delay for mode change from Silent Mode into Normal Mode via EN V EN = VCC EN t s_n 515 40 µs A 10.6 Monitoring time for wake-up over LIN bus LIN t mon 610 15 ms A LIN Bus Driver AC Parameter with Different Bus Loads Load 1 (small): 1 nF, 1 k Ω ; Load 2 (large): 10 nF, 500Ω ; R RXD =5kΩ; CRXD =20pF; Load 3 (medium): 6.8 nF, 660 Ω characterized on samples; 10.7 and 10.8 specifies the timing parameters for proper operation of 20 Kbit/s, 10.9 and 10.10 at 10.4 Kbit/s 10.7 Duty cycle 1 TH Rec(max) = 0.744 × VS TH Dom(max) = 0.581 × VS VS = 7.0V to 18V t Bit = 50 µs D1 = tbus_rec(min)/(2 × tBit) LIN D1 0.396 A 10.8 Duty cycle 2 THRec(min) = 0.422 × VS TH Dom(min) = 0.284 × VS VS = 7.6V to 18V tBit = 50 µs D2 = t bus_rec(max)/(2 × tBit) LIN D2 0.581 A 10.9 Duty cycle 3 THRec(max) = 0.778 × VS THDom(max) = 0.616 × VS V S = 7.0V to 18V tBit = 96 µs D3 = tbus_rec(min)/(2 × tBit) LIN D3 0.417 A 10.10 Duty cycle 4 TH Rec(min) = 0.389 × VS THDom(min) = 0.251 × VS VS = 7.6V to 18V t Bit = 96 µs D4 = tbus_rec(max)/(2 × tBit) LIN D4 0.590 A 10.11 Slope time falling and rising edge at LIN VS = 7.0V to 18V LIN tSLOPE_fall t SLOPE_rise 3.5 22.5 µs A 11 Receiver Electrical AC Parameters of the LIN Physical Layer, LIN Receiver, RXD Load Conditions (CRXD): 20 pF 11.1 Propagation delay of receiver (Figure 9-1) V S = 7.0V to 18V t rx_pd = max(trx_pdr , trx_pdf) RXD trx_pd 6µs A 11.2 Symmetry of receiver propagation delay rising edge minus falling edge V S = 7.0V to 18V trx_sym = trx_pdr – trx_pdf RXD t rx_sym –2 +2 µs A 9. Electrical Characteristics (Continued) 5V < VS < 27V, –40°C < Tj < 150°C, unless otherwise specified. All values refer to GND pins No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter |
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