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.
n
Single-package Fully Integrated AVR 8-bit
Microcontroller with LIN Transceiver, 5V Regula-
tor, and Watchdog
n
Supply Voltage up to 40V
n
Operating Voltage from 5V to 18V
n
Temperature Range for T
case
–40°C to +125°C
n
Same Features as the Stand-alone AVR
ATmega88/168:
- LIN-capable UART
- 8-channel 10-bit ADC
- 8 kByte (ATA6602) or 16 kByte (ATA6603)
Flash Memory for Application Program
- 512 Byte EEPROM and 1 kByte SRAM
Features
Microcontroller with LIN Transceiver,
5V Regulator, and Watchdog
ATA6602, ATA6603
AuToMoTIVe
& CONTROL
n
Small Single-package Solution –
QFN48, 7 mm x 7 mm
n
Small PCB Size with Fewer Soldering Inspections
n
Silent Mode Supplies the Microcontroller in
Sleep Mode Operation for e.g., Switch Scan-
ning or LED Flashing Facilitating a Very Low
Current Consumption
n
Wake-up Capability via LIN-bus or WAKE Pin
n
Boosting of the Voltage Regulator’s Current
Capacity Possible with an External NPN Transistor
n
60V Load Dump Protection at LIN Pin
n
High ESD Level at LIN-bus Pin and Supply VS Pin
n
Supported by AVR Development Tools AVR
Studio
®
, JTAGICE, debugWIRE, and STK
®
500
Benefits
GND
WD_OSC
NRES
NTRIG
PTRIG
PVCC
Booster
TEMP
LIN
VS
VDD
ADC7
PD6
PC6
PD0 PD1 PD7
EN
TXD
RXD
WAKE VCC
Voltage Regulator
ATA6602/03
ATA6621
Microcontroller
ATmega88/168
Lin Bus
TXD
Time-out
Timer
Receiver
Filter
LIN Output Stage
Slew Rate Control
Short-circuit
and
Overtemperature
Protection
Watchdog
Wake-up Bus Timer
Control Unit
Standby Mode
Silent Mode
Wake-up
Timer
Voltage Regulator
