Automotive & Control

Microcontroller with LIN Transceiver, 5V Regulator, and Watchdog

ATA6602, ATA6603

The ATA6602/ATA6603 are single-package dual-chip circuits for LIN-bus slave and master node applica- tions. They support highly integrated solutions for in-vehicle LIN networks. The LIN-system-basis-chip (LIN-SBC) consists of a LIN transceiver, which complies with the LIN specification; a voltage regulator; and a window watchdog. The second chip used in the ATA6602 and ATA6603 is from Atmel®’s series of AVR® 8-bit microcontrollers with advanced RISC architecture. An ATmega88 microcontroller is used in the ATA6602, while an ATmega168 is used in the ATA6603. The LIN-SBC and the microcontroller are mounted in a small QFN48 package. This dual-chip combination makes it possible to develop inexpensive, simple, yet powerful master and slave nodes for use in LIN-bus systems.

FeaturesBenefits

n Single-package Fully Integrated AVR 8-bit

 

 

 

n Small Single-package Solution –

Microcontroller with LIN Transceiver, 5V Regula-

 

 

 

QFN48, 7 mm x 7 mm

 

 

tor, and Watchdog

 

 

 

 

 

 

 

n Small PCB Size with Fewer Soldering Inspections

n Supply Voltage up to 40V

 

 

 

 

 

 

 

n Silent Mode Supplies the Microcontroller in

n Operating Voltage from 5V to 18V

 

 

 

 

 

 

 

Sleep Mode Operation for e.g., Switch Scan-

n Temperature Range for Tcase –40°C to +125°C

 

 

 

ning or LED Flashing Facilitating a Very Low

n Same Features as the Stand-alone AVR

 

 

 

 

 

Current Consumption

 

 

ATmega88/168:

 

 

 

 

 

 

 

 

 

 

 

n Wake-up Capability via LIN-bus or WAKE Pin

-

LIN-capable UART

 

 

 

 

 

 

 

n Boosting of the Voltage Regulator’s Current

-

8-channel 10-bit ADC

 

 

 

 

 

 

 

 

 

Capacity Possible with an External NPN Transistor

- 8 kByte (ATA6602) or 16 kByte (ATA6603)

 

n 60V Load Dump Protection at LIN Pin

 

Flash Memory for Application Program

 

 

 

n High ESD Level at LIN-bus Pin and Supply VS Pin

- 512 Byte EEPROM and 1 kByte SRAM

 

 

 

n Supported by AVR Development Tools AVR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Studio®, JTAGICE, debugWIRE, and STK®500

 

 

PD0

 

PD1

 

 

PD7

EN

 

TXD

 

RXD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lin Bus

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATA6602/03

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATA6621

VS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Receiver

 

 

 

Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATmega88/168

 

 

TXD

 

 

Wake-up Bus Timer

 

LIN Output Stage

 

 

 

 

 

 

 

 

 

Microcontroller

 

 

Time-out

 

 

Slew Rate Control

 

 

 

 

 

 

 

 

 

 

 

Timer

 

 

Control Unit

 

 

Short-circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standby Mode

 

 

 

 

and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wake-up

 

Silent Mode

 

Overtemperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Protection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Timer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage Regulator

 

 

 

Watchdog

 

 

 

WD_OSC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC6

 

PD6

 

ADC7

VDD

WAKE

VCC

TEMP

PVCC

 

 

PTRIG

 

NTRIG

NRES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Booster