Datasheet

 2012 Microchip Technology Inc. DS30575A-page 555

PIC18F97J94 FAMILY

R/WO-1 R/WO-1 R/WO-1 U-1 U-1 U-1 U-1 U-1

DEBUG

XINST STVREN — — — — —

bit 7 bit 0

Legend: P = Programmable bit WO = Write-Once bit

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7 DEBUG

: Background Debugger Enable bit

1 = Background debugger is disabled, and RB6 and RB7 are configured as general purpose I/O pins

0 = Background debugger is enabled, and RB6 and RB7 are dedicated to In-Circuit Debug

bit 6 XINST: Extended Instruction Set Enable bit

1 = Instruction set extension and Indexed Addressing mode are enabled

0 = Instruction set extension and Indexed Addressing mode are disabled (Legacy mode)

bit 5 STVREN: Stack Overflow Reset Enable bit

1 = Reset on stack overflow/underflow is enabled

0 = Reset on stack overflow/underflow is disabled

bit 4-0 Unimplemented: Read as ‘1’

U-1 U-1 U-1 U-1 U-0 R/WO-1 R/WO-1 R/WO-1

— — — — — CP0 BORV BOREN

bit 7 bit 0

Legend: P = Programmable bit WO = Write-Once bit

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7-4 Unimplemented: Read as ‘—’

bit 3 Unimplemented: Maintain as ‘0’

bit 2 CP0: Code Protection bit 0

1 = Program memory is not code-protected

0 = Program memory is code-protected (and write-protected in test modes)

bit 1 BORV: BOR Trip Point Select bit

1 = BOR trip point is 1.8V

0 = BOR trip point is 2.0V

bit 0 BOREN: Brown-out Reset Enable bit

1 = Brown-out Reset is disabled

0 = Brown-out Reset is enabled outside of Deep Sleep (BORV is always disabled in Deep Sleep)