Datasheet
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APPLICATION INFORMATION
V
bat
V
BAT
V
SUP
TPIC7xxxx
V
SUP
V
DD
V
DD
V
DD
V
SUP
INH
NWake
TPIC1021
MCU
MASTER
NODE
TMS430
TMS470
LIN
Controller
or
SCI/UART
1
EN
RXD
TXD
MCU w/o
pull−up
2
V
DD
I/O
GND
2
8 3 7
1
4 5
6
Master Node
Pull−Up
3
1 kΩ
LIN
220 pF
V
SUP
TPIC7xxxx
V
SUP
V
DD
V
DD
V
SUP
INH
NWake
TPIC1021
MCU
TMS430
TMS470
LIN
Controller
or
SCI/UART
1
EN
TXD
MCU w/o
pull−up
2
V
DD
I/O
GND
2
8 3 7
1
4 5
6
LIN
220 pF
RXD
SLAVE
NODE
LIN Bus
TPIC1021
LIN Physical Interface
SLIS113C – OCTOBER 2004 – REVISED JULY 2005
(1) RXD on MCU or LIN Slave has internal pull-up, no external pull-up resistor is needed.
(2) RXD on MCU or LIN Slave without internal pull-up, requires external pull-up resistor.
(3) Master Node applications require an external 1-k Ω pull-up resistor and serial diode.
Figure 5.
11