RFPIC12F675 datasheet(56/136 Pages) MICROCHIP

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rfPIC12F675

DS70091B-page 56

Preliminary

 2003-2013 Microchip Technology Inc.

10.1

Configuration Bits

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

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

device configurations, as shown in Register 10-1.

These bits are mapped in program memory location

2007h.

CONFIG — CONFIGURATION WORD (ADDRESS: 2007h)

Note:

Address 2007h is beyond the user program

memory space. It belongs to the special

configuration

memory

space

(2000h -

3FFFh), which can be accessed only during

programming. See rfPIC12F675 Program-

ming Specification for more information.

R/P-1 R/P-1

U-0

R/P-1

BG1

BG0

—

CPD

BODEN MCLRE PWRTE WDTE F0SC2 F0SC1 F0SC0

bit 13

bit 0

bit 13-12

BG1:BG0: Bandgap Calibration bits for BOD and POR voltage(1)

= Lowest bandgap voltage

= Highest bandgap voltage

bit 11-9

Unimplemented: Read as ‘0’

bit 8

CPD: Data Code Protection bit(2)

= Data memory code protection is disabled



= Data memory code protection is enabled

bit 7

CP: Code Protection bit(3)

= Program Memory code protection is disabled



= Program Memory code protection is enabled

bit 6

BODEN: Brown-out Detect Enable bit(4)

= BOD enabled



= BOD disabled

bit 5

MCLRE: GP3/MCLR pin function select(5)

= GP3/MCLR pin function is MCLR



= GP3/MCLR pin function is digital I/O, MCLR internally tied to VDD

bit 4

PWRTE: Power-up Timer Enable bit



= PWRT disabled



= PWRT enabled

bit 3

WDTE: Watchdog Timer Enable bit



= WDT enabled



= WDT disabled

bit 2-0

FOSC2:FOSC0: Oscillator Selection bits

111

= RC oscillator: CLKOUT function on GP4/OSC2/CLKOUT pin, RC on GP5/OSC1/CLKIN



110

= RC oscillator: I/O function on GP4/OSC2/CLKOUT pin, RC on GP5/OSC1/CLKIN



101

= INTOSC oscillator: CLKOUT function on GP4/OSC2/CLKOUT pin, I/O function on GP5/OSC1/CLKIN



100

= INTOSC oscillator: I/O function on GP4/OSC2/CLKOUT pin, I/O function on GP5/OSC1/CLKIN



011

= EC: I/O function on GP4/OSC2/CLKOUT pin, CLKIN on GP5/OSC1/CLKIN



010

= HS oscillator: High speed crystal/resonator on GP4/OSC2/CLKOUT and GP5/OSC1/CLKIN



001

= XT oscillator: Crystal/resonator on GP4/OSC2/CLKOUT and GP5/OSC1/CLKIN



000

= LP oscillator: Low power crystal on GP4/OSC2/CLKOUT and GP5/OSC1/CLKIN

Note 1: The Bandgap Calibration bits are factory programmed and must be read and saved prior to erasing

the device as specified in the rfPIC12F675 Programming Specification. These bits are reflected in

an export of the configuration word. Microchip Development Tools maintain all calibration bits to

factory settings.

2: The entire data EEPROM will be erased when the code protection is turned off.

3: The entire program memory will be erased, including OSCCAL value, when the code protection is

turned off.

4: Enabling Brown-out Detect does not automatically enable Power-up Timer.

5: When MCLR is asserted in INTOSC or RC mode, the internal clock oscillator is disabled.

Legend:

P = Programmed using ICSP

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

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