PIC16LC554 datasheet(36/96 Pages) MICROCHIP

36 / 96 page

PIC16C55X(A)

DS40143B-page 36

Preliminary

7.1

Conﬁguration Bits

The conﬁguration bits can be programmed (read as '0')

or left unprogrammed (read as '1') to select various

device conﬁgurations. These bits are mapped in

program memory location 2007h.

The user will note that address 2007h is beyond

the user program memory space. In fact, it belongs

to the special

test/conﬁguration

memory

space

(2000h – 3FFFh), which can be accessed only during

programming.

FIGURE 7-1:

CONFIGURATION WORD

CP1

CP01

CP1

CP01

CP1

CP01

—

Reserved CP1

CP01 PWRTE WDTE F0SC1 F0SC0

CONFIG

Address

2007h

bit13

bit0

bit 13-8

CP<1:0>: Code protection bits(1)

5-4:

= Code protection off

= Upper half of program memory code protected

= Upper 3/4th of program memory code protected

= All memory is 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

= RC oscillator

= HS oscillator

= XT oscillator

= LP oscillator

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

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