PIC18F14K22LIN Datasheet, PDF (9/62 Pages) Microchip Technology – 20-Pin Flash Microcontrollers 20-Pin Flash Microcontrollers

PIC18F14K22LIN
1.0 USING THE MCP200X IN LIN
BUS APPLICATIONS
Note:
Failure to follow the recommended setup
and initialization may result in improper or
unknown LIN operation.
1.1 Hardware
The MCP200X internal connections are optimized to
reduce the number of components in a typical LIN/
J2602 node in a LIN bus system. Some features and
modules of the stand-alone PIC18F14K22 are no
longer available or their functionality has changed.
FIGURE 1-1:
TYPICAL LIN NETWORK CONFIGURATION
40m
+ Return
LIN bus
1 k
VBB
LIN bus
MCP202X
Master
µC
LIN bus
MCP202X
Slave 1
µC
For this reason, the following (Example 1-1) is a
recommended block diagram. Note the microcontroller
is powered by the internal voltage regulator and an
external connection must be made between VREG and
VBB along with a load capacitor. FAULT/TXE can be
monitored or controlled by any I/O pin.
LIN bus
PIC18F1XK22LIN
Slave 2
µC
LIN bus
MCP202X
Slave n <16
µC
 2011 Microchip Technology Inc.
Preliminary
DS41580A-page 9