ATA6670-FFQW【PDF 6/19 页】IC TXRX LIN DUAL 14VDFN

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Sheet目录1904

2页 3页 4页 5页 [6页]7页 8页 9页 10页

Atmel ATA6670 [DATASHEET]

9204F–AUTO–06/12

LIN Bus Driver AC Parameter with Different Bus Loads

Load 1 (small): 1nF, 1k

Ω ; Load 2 (large): 10nF, 500Ω ; RRXD = 5kΩ ; CRXD = 20pF;

Load 3 (medium): 6.8nF, 660

Ω characterized on samples; 10.1 and 10.2 specifies the timing parameters for proper

operation at 20Kbit/s, 10.3 and 10.4 at 10.4Kbit/s.

10.1 Duty cycle 1

THRec(max) = 0.744 × VS

THDom(max) = 0.581 × VS

VS = 7.0V to 18V

tBit = 50s

D1 = tbus_rec(min) /(2 × tBit)

LIN

0.396

10.2 Duty cycle 2

THRec(min) = 0.422 × VS

THDom(min) = 0.284 × VS

VS = 7.0V to 18V

tBit = 50s

D2 = tbus_rec(max) /(2 × tBit)

LIN

0.581

10.3 Duty cycle 3

THRec(max) = 0.778 × VS

THDom(max) = 0.616 × VS

VS = 7.0V to 18V

tBit = 96s

D3 = tbus_rec(min) /(2 × tBit)

LIN

0.417

10.4 Duty cycle 4

THRec(min) = 0.389 × VS

THDom(min) = 0.251 × VS

VS = 7.0V to 18V

tBit = 96s

D4 = tbus_rec(max) /(2 × tBit)

LIN

0.590

Receiver Electrical AC Parameters of the LIN Physical Layer

LIN receiver, RXD load conditions: CRXD = 20pF, Rpull-up = 5kΩ

11.1

Propagation delay of receiver

(see Figure 5-1 on page 15)

trec_pd = max(trx_pdr , trx_pdf)

VS = 7.0V to 18V

RXD

trx_pd

11.2

Symmetry of receiver

propagation delay rising edge

minus falling edge

trx_sym = trx_pdr – trx_pdf

VS = 7.0V to 18V

RXD

trx_sym

–2

Electrical Characteristics (Continued)

5V < VS < 27V, Tj = –40°C to +150°C; the values below are valid for each of the two nearly identical integrated LIN transceivers unless

otherwise specified.

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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