ATA6670
Dual LIN Transceiver
DATASHEET
Features
Operating range from 5V to 27V
Baud rate up to 20Kbaud
LIN physical layer according to LIN specification 2.0, 2.1 and SAEJ2602-2
Fully compatible with 3.3V and 5V devices
TXD dominant timeout timer
Normal and sleep mode
Wake-up capability via LIN bus (90s dominant)
Very low standby current during sleep mode (10A)
Bus pin is overtemperature and short-circuit protected versus GND and battery
LIN input current < 2A if VBAT Is disconnected
Overtemperature protection
High EMC level
Interference and damage protection according to ISO/CD 7637
Fulfills the OEM hardware requirements for LIN in automotive applications rev. 1.1
Transceiver 2: additional INH high side switch output and high voltage WAKE input
Qualified according to AEC-Q100
Package: DFN14 with wettable flanks (Moisture Sensitivity Level 1)
Description
The Atmel ATA6670 is a fully integrated dual-LIN transceiver complying with the LIN
specification 2.0, 2.1, and SAEJ2602-2. There are two completely independent and sepa-
rated LIN transceivers integrated in one package (only the GND pins GND1 and GND2 are
internally connected). Each of them interfaces with the LIN protocol handler and the physi-
cal layer.
The two LIN transceivers are nearly identical, the only difference is an additional WAKE
input and an INH output at transceiver 2.
The device is designed to handle the low-speed data communication in vehicles, for exam-
ple, in convenience electronics. Improved slope control at the LIN driver ensures secure
data communication up to 20Kbaud. Sleep mode guarantees minimal current consumption
for each transceiver even in the case of a floating bus line or a short-circuit on the LIN bus
to GND. The Atmel ATA6670 features advanced EMI and ESD performance.
9204H-AUTO-10/14Figure 1. Block Diagram
14
VS1
Transceiver 1
1 Receiver
RXD1
-
+
13
Filter LIN1
Wake up bus
Short circuit
timer
and over-
3 temperature
TXD1 TXD protection
Slew rate control
Time-Out
Timer
Control unit
12
Sleep mode
GND1
2
EN1
10
VS2
Transceiver 2
4 Receiver
RXD2
-
+
9
Filter LIN2
Wake up bus
Short circuit
timer
and over-
temperature
7
protection
TXD2 TXD
Slew rate control
Time-Out
Timer
V
S
V
S
Control unit
6 8
Wake-up Sleep mode
WAKE2 GND2
Timer
5 11
EN2 INH2
2 ATA6670 [DATASHEET]
9204HAUTO10/14