ATA6621(2006_01) 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6621
(Rev.:2006_01)

LIN Transceiver with 5V Regulator and Watchdog

Atmel Corporation 

2. Pin Configuration

Figure 2-1. Pinning QFN20

20 19 18 17 16

EN 1

PTRIG 2

NTRIG 3

WAKE 4

GND 5

ATA6621

MLP 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

ATA6621

Table 2-1.

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Pin Description

Symbol Function

EN

Enables the device into Normal Mode

PTRIG High-level watchdog trigger input from microcontroller; if not needed, leave open or connect to GND

NTRIG Low-level watchdog trigger input from microcontroller; if not needed, leave open or connect to VCC

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

GND

System ground

NC

Not connected

LIN

LIN bus line input/output

NC

Not connected

RXD

Receive data output

NC

Not connected

TXD

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

NRES Output undervoltage and watchdog reset

WD_OSC Watchdog oscillator

TM

For factory testing only (tie to ground)

MODE For factory testing only (tie to ground)

GND

Additional ground

TEMP Chip temperature output pin

PVCC 5V regulator sense input pin

VCC

5V regulator output/driver pin

VS

Battery supply

Backside Heat slug is connected to GND (pin 5)

3

4887B–AUTO–01/06

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