ATA6622C-PGQW-1 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6622C-PGQW-1

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

Atmel Corporation 

1. Description

The Atmel® ATA6622C is a fully integrated LIN transceiver, which complies with the LIN 2.0, 2.1 and SAEJ2602-2

specifications. It has a low-drop voltage regulator for 3.3V/85mA output and a window watchdog. The Atmel ATA6624C has

the same functionality as the Atmel ATA6622C; however, it uses a 5V/85mA regulator. The Atmel ATA6626C has the same

functionality as Atmel ATA6624C without a TXD time-out timer. The voltage regulator is able to source 85mA, but the output

current can be boosted by using an external NPN transistor. This chip combination makes it possible to develop inexpensive,

simple, yet powerful slave and master nodes for LIN-bus systems. Atmel ATA6622C/ATA6624C/ATA6626C are designed to

handle the low-speed data communication in vehicles, e.g., in convenience electronics. Improved slope control at the LIN-

driver ensures secure data communication up to 20kBaud. Sleep Mode and Silent Mode guarantee very low current

consumption. The Atmel ATA6626C is able to switch the LIN unlimited to dominant level via TXD for low data rates.

Figure 1-1. Block Diagram

10

INH

9

RXD

PVCC

Normal and

Fail-safe

Mode

WAKE

KL_15

4

16

PVCC

11

TXD

Edge

Detection

TXD

Time-out

Timer

*)

1

EN

Receiver

-

+

Wake-up

Bus Timer

Slew Rate Control

Normal

Mode

RF Filter

Short Circuit and

Overtemperature

Protection

Control Unit

Normal/Silent/

Fail-safe Mode

3.3/5V

Undervoltage

Reset

20

VS

7

LIN

19

VCC

18

PVCC

12

NRES

5

GND

*) Not in ATA6626

Internal Testing

Unit

15 14

MODE TM

OUT

Watchdog

PVCC

3

NTRIG

Adjustable

Watchdog

Oscillator

13

WD_OSC

2

ATA6622C/ATA6624C/ATA6626C [DATASHEET]

4986O–AUTO–10/14

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