2. Pin Configuration
Figure 2-1. Pinning SO8
RXD 1
EN 2
WAKE 3
TXD 4
8 INH
7 VS
6 LIN
5 GND
Table 2-1.
Pin
1
2
3
4
5
6
7
8
Pin Description
Symbol Function
RXD
Receive data output (open drain)
EN
Enables Normal Mode; when the input is open or low, the device is in Sleep Mode
WAKE High voltage input for local wake-up request. If not needed, connect directly to VS
TXD
Transmit data input; active low output (strong pull-down) after a local wake-up request
GND
Ground, heat sink
LIN
LIN bus line input/output
VS
Battery supply
INH
Battery-related inhibit output for controlling an external voltage regulator; active high after a wake-up
request
2 ATA6662
4916O–AUTO–05/10