Rainbow-electronics ATA6670 Manual de usuario descargar pdf (Pagina 14)

9204C–AUTO–09/11

Atmel ATA6670 [Preliminary]

7.12

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

BAT

disconnected

SUP_Device

= GND

0V < V

BUS

< 18V

LIN I

BUS_NO_Bat

0.1 2 µA A

7.13 Capacitance on pin LIN to GND LIN C

LIN

20 pF D

8 LIN Bus Receiver

8.1 Center of receiver threshold

BUS_CNT

th_dom

+ V

th_rec

)/2

LIN V

BUS_CNT

0.475 ×

0.5 ×

0.525

× V

8.2 Receiver dominant state V

= 5V LIN V

BUSdom

–27

0.4 ×

8.3 Receiver recessive state V

= 5V LIN V

BUSrec

0.6 ×

40 V A

8.4 Receiver input hysteresis V

HYS

= V

th_rec

– V

th_dom

LIN V

BUShys

0.028 ×

0.1 ×

0.175

× V

8.5

Pre-wake detection LIN

high-level input voltage

LIN V

LINH

–

0.3V

8.6

Pre-wake detection LIN

Low-level input voltage

Switches the LIN receiver on LIN V

LINL

–27V

–

3.3V

8.7 LIN pre-wake pull-up current

< 27V

LIN

= 0V

LIN I

LINWAKE

–30 –10 µA A

9 Internal Timers

9.1

Dominant time for wake-up via

LIN bus

LIN

= 0V LIN t

BUS

30 90 150 µs A

9.3

Time delay for mode change

from fail-safe mode to normal

mode via pin EN

= 5V EN t

norm

2715µsA

9.4

Time delay for mode change

from normal mode into sleep

mode via pin EN

= 0V EN t

sleep

71220µsB

9.5 TXD dominant time out time V

TXD

= 0V TXD t

dom

27 55 70 ms A

9.6

Monitoring time for wake-up over

LIN bus

LIN t

mon

61015msA

6. Electrical Characteristics (Continued)

5V < V

< 27V, T

= –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

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20

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Rainbow-electronics ATA6670 Manual de usuario Pagina 14

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