PIC18F14K22LIN Datasheet, PDF (37/62 Pages) Microchip Technology – 20-Pin Flash Microcontrollers 20-Pin Flash Microcontrollers

7.0 LIN/J2602 TRANSCEIVER AND
VOLTAGE REGULATOR
Please refer to “MCP2021/2, LIN Transceiver with Volt-
age Regulator Data Sheet” (DS22018). Only differ-
ences in the PIC18F14K22LIN are noted here.
The LIN/J2602 Transceiver provides a physical inter-
face to a LIN half-duplex bus. It is intended for automo-
tive and industrial applications with serial bus speeds
up to 20 Kbaud.
The PIC18F14K22LIN provides a +5V 50 mA regulated
power output.
7.1 Pin Descriptions
7.1.1 POWER OUTPUT (VREG)
Positive Supply Voltage Regulator Output pin.
7.1.2 GROUND (VSS)
Ground pin.
7.1.3 BATTERY (VBB)
Battery Positive Supply Voltage pin. This pin is also the
input for the Internal Voltage Regulator.
7.1.4 LIN BUS
The bidirectional LIN bus Interface pin is the driver unit
for the LIN pin.
7.1.5
FAULT/TXE
Fault Detect output and Transmitter Enable input
bidirectional pin.
7.2 Internal Connections
7.2.1 TRANSMIT DATA INPUT (TXD)
The Transmit Data Input pin has an internal pull-up to
VREG. The LIN pin is low (dominant) when TXD is low.
Internally connected to PORTB<7>.
7.2.2 RECEIVE DATA OUTPUT (RXD)
The Receive Data Output pin is a standard CMOS
output and follows the state of the LIN pin. It is internally
connected to PORTB<5>.
7.2.3 CS/LWAKE
Chip Select Input pin. It is internally connected to
PORTB<6>.
7.2.4 RESET
RESET is an open-drain output. It is internally
connected to PORTC<7>.
PIC18F14K22LIN
 2011 Microchip Technology Inc.
Preliminary
DS41580A-page 41