PIC18F2331/2431/4331/4431
REGISTER 18-8: FLTCONFIG: FAULT CONFIGURATION REGISTER
R/W-0
R/W-0
FLTBS(1)
R/W-0
R/W-0
R/W-0
FLTCON(2)
R/W-0
FLTAS
R/W-0
R/W-0
BRFEN
FLTBMOD(1) FLTBEN(1)
FLTAMOD
FLTAEN
bit 7
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
bit 7
bit 6
BRFEN: Breakpoint Fault Enable bit
1= Enable Fault condition on a breakpoint (i.e., only when PWMPIN = 1)
0= Disable Fault condition
FLTBS: Fault B Status bit(1)
1= FLTB is asserted:
if FLTBMOD = 0, cleared by the user;
if FLTBMOD = 1, cleared automatically at beginning of the new period when FLTB is deasserted
0= No Fault
bit 5
FLTBMOD: Fault B Mode bit(1)
1= Cycle-by-Cycle mode: Pins are inactive for the remainder of the current PWM period or until FLTB
is deasserted; FLTBS is cleared automatically when FLTB is inactive (no Fault present)
0= Inactive mode: Pins are deactivated (catastrophic failure) until FLTB is deasserted and FLTBS is
cleared by the user only
bit 4
bit 3
bit 2
FLTBEN: Fault B Enable bit(1)
1= Enable Fault B
0= Disable Fault B
FLTCON: Fault Configuration bit(2)
1= FLTA, FLTB or both deactivates all PWM outputs
0= FLTA or FLTB deactivates PWM<5:0>
FLTAS: Fault A Status bit
1= FLTA is asserted:
if FLTAMOD = 0, cleared by the user;
if FLTAMOD = 1, cleared automatically at beginning of the new period when FLTA is deasserted
0= No Fault
bit 1
bit 0
FLTAMOD: Fault A Mode bit
1= Cycle-by-Cycle mode: Pins are inactive for the remainder of the current PWM period or until FLTA is
deasserted; FLTAS is cleared automatically
0= Inactive mode: Pins are deactivated (catastrophic failure) until FLTA is deasserted and FLTAS is
cleared by the user only
FLTAEN: Fault A Enable bit
1= Enable Fault A
0= Disable Fault A
Note 1: Unimplemented in PIC18F2331/2431 devices; maintain these bits clear.
2: PWM<7:6> are implemented only on PIC18F4331/4431 devices. On PIC18F2331/2431 devices, setting or
clearing FLTCON has no effect.
2010 Microchip Technology Inc.
DS39616D-page 201
MICROCHIP [ MICROCHIP ]
