2

9146D–AUTO–09/10

Atmel ATA6663/ATA6664

Figure 1-1.

Block Diagram

2.

Pin Configuration

Figure 2-1.

Pinning SO8

VS

GND

5

6

LIN

7

1

4

RXD

TXD

WAKE

EN

3

2

8

INH

Short-circuit and over-

temperature protection

Receiver

Filter

Wake-up bus timer

Slew rate control

TXD

time-out

timer

VS

Wake-up

timer

Sleep mode

VS

Control unit

(only ATA6663)

RXD

EN

WAKE

TXD

INH

VS

LIN

GND

1

2

3

4

8

7

6

5

Table 2-1.

Pin Description

Pin

Symbol

Function

1

RXD

Receive data output (open drain)

2

EN

Enables normal mode; when the input is open or low, the device is in sleep mode

3

WAKE

High voltage input for local wake-up request. If not needed, connect directly to VS

4

TXD

Transmit data input; active low output (strong pull-down) after a local wake-up request

5

GND

Ground, heat sink

6

LIN

LIN bus line input/output

7

VS

Battery supply

8INH

Battery-related inhibit output for controlling an external voltage regulator or to switch-off the LIN master

pull-up resistor; active high after a wake-up request