PIC16F1829LIN Datasheet, PDF (57/74 Pages) Micon Design Technology Corporation – 20-Pin, 8-bit Flash LIN/J2602 Microcontroller

9.0 CONSIDERATION OF SPLIT
POWER SUPPLIES AND
DURING DEBUG
When the microcontroller is powered by a source other
than the LIN Voltage Regulator, the following should be
observed. This also applies when debugging and
power the microcontroller from the emulator.
Leaving RB7/TX or RB6/LINCS outputs in a high state
(‘1’) will source current into the internal voltage
regulator and prevent the RESET circuit from detecting
a Power-on-event. Always drive RB7/TX low when
putting the transceiver into Power-Down mode by
controlling RB6/CS = 0.
If the microcontroller is supplied by the debugging tool,
be aware that the VBAT must be applied to the VBAT pin
for the transceiver to operate.
PIC16F1829LIN
 2012 Microchip Technology Inc.
Preliminary
DS41673A-page 57