Datasheet

PIC16C55X

DS40143E-page 32 Preliminary  1996-2013 Microchip Technology Inc.

CP1 CP0 CP1 CP0 CP1 CP0 — Reserved CP1 CP0 PWRTE WDTE F0SC1 F0SC0

bit 13 bit 0

bit 13-8

bit 5-4

CP<1:0>: Code protection bits

(1)

11 = Program Memory code protection off

10 = 0400h - 07FFh code protected

01 = 0200h - 07FFh code protected

11 = 0000h - 07FFh code protected

bit 7 Unimplemented: Read as '1'

bit 6 Reserved: Do not use

bit 3 PWRTE

: Power-up Timer Enable bit

1 = PWRT disabled

0 = PWRT enabled

bit 2

WDTE: Watchdog Timer Enable bit

1 = WDT enabled

0 = WDT disabled

bit 1-0 FOSC1:FOSC0: Oscillator Selection bits

11 = RC oscillator

10 = HS oscillator

01 = XT oscillator

00 = LP oscillator

Note 1: All of the CP1:CP0 pairs have to be given the same value to enable the code protection scheme listed.

Legend:

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

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