ATA6624(2008) 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6624
(Rev.:2008)

LIN Bus Transceiver with 3.3V (5V) Regulator and Watchdog

Atmel Corporation 

2. Pin Configuration

Figure 2-1. Pinning QFN20

ATA6622/ATA6624/ATA6626

20 19 18 17 16

EN 1

GND 2

NTRIG 3

WAKE 4

GND 5

ATA6622/24/26

QFN 5 mm × 5 mm

0.65 mm pitch

20 lead

15 MODE

14 TM

13 WD_OSC

12 NRES

11 TXD

6 7 8 9 10

Table 2-1.

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Backside

Pin Description

Symbol Function

EN

Enables the device in Normal Mode

GND

System ground (optional)

NTRIG Low-level watchdog trigger input from microcontroller

WAKE High-voltage input for local wake-up request; if not needed, connect to VS

GND

System ground (mandatory)

GND

System ground (optional)

LIN

LIN-bus line input/output

GND

System ground (optional)

RXD

Receive data output

INH

Battery related output for controlling an external voltage regulator

TXD

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

NRES Output undervoltage and watchdog reset (open drain)

WD_OSC External resistor for adjustable watchdog timing

TM

For factory testing only (tie to ground)

MODE For debug mode: low, watchdog is on; high, watchdog is off

KL_15 Ignition detection (edge sensitive)

GND

System ground (optional)

PVCC 3.3V/5V regulator sense input pin

VCC

3.3V/5V regulator output/driver pin

VS

Battery supply

Heat slug is connected to all GND pins

3

4986F–AUTO–07/08

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