Rainbow-electronics ATA6630 Manual do Utilizador descarregar pdf (Página 25)

9117C–AUTO–10/09

ATA6628/ATA6630 [Preliminary]

8.3 Driver dominant voltage

= 18V

load

= 500 Ω

LIN V

_HiSUP

2VA

8.4 Driver dominant voltage

= 7.0V

load

= 1000 Ω

LIN V

_LoSUP_1k

0.6 V A

8.5 Driver dominant voltage

= 18V

load

= 1000 Ω

LIN V

_HiSUP_1k

0.8 V A

8.6 Pull-up resistor to VS

The serial diode is

mandatory

LIN R

LIN

20 30 47 kΩ A

8.7

Voltage drop at the serial

diodes

In pull-up path with R

slave

SerDiode

=10mA

LIN V

SerDiode

0.4 1.0 V D

8.8

LIN current limitation

BUS

= V

Batt_max

LIN I

BUS_LIM

70 120 200 mA A

8.9

Input leakage current at

the receiver including

pull-up resistor as

specified

Input leakage current

Driver off

BUS

= 0V

Batt

= 12V

LIN I

BUS_PAS_dom

–1 –0.35 mA A

8.10

Leakage current LIN

recessive

Driver off

8V < V

Batt

< 18V

8V < V

BUS

< 18V

BUS

≥ V

Batt

LIN I

BUS_PAS_rec

10 20 µA A

8.11

Leakage current at GND

loss, control unit

disconnected from ground.

Loss of local ground must

not affect communication

in the residual network.

GND

Device

= V

Batt

= 12V

0V < V

BUS

< 18V

LIN I

BUS_NO_gnd

–10 +0.5 +10 µA A

8.12

Leakage current at loss of

battery. Node has to

sustain the current that

can flow under this

condition. Bus must

remain operational under

this condition.

Batt

disconnected

SUP_Device

= GND

0V < V

BUS

< 18V

LIN I

BUS_NO_bat

0.1 2 µA A

9 LIN Bus Receiver

9.1

Center of receiver

threshold

BUS_CNT

th_dom

+ V

rec

)/2

LIN V

BUS_CNT

0.475 ×

0.5 ×

0.525 ×

9.2 Receiver dominant state V

= V

LIN V

BUSdom

0.4 × V

9.3 Receiver recessive state V

= V

LIN V

BUSrec

0.6 × V

9.4 Receiver input hysteresis V

hys

= V

th_rec

– V

th_dom

LIN V

BUShys

0.028 ×

0.1 × V

0.175 ×

9.5

Pre_Wake detection LIN

High-level input voltage

LIN V

LINH

– 2V V

+ 0.3V V A

9.6

Pre_Wake detection LIN

Low-level input voltage

Activates the LIN receiver LIN V

LINL

–27 V

– 3.3V V A

10 Internal Timers

10.1

Dominant time for

wake-up via LIN bus

LIN

= 0V LIN t

bus

30 90 150 µs A

9. Electrical Characteristics (Continued)

5V < V

< 27V, –40°C < T

< 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

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 33 34

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