PIC16F628-20SLASHSS datasheet(96/160 Pages) MICROCHIP

96 / 160 page

PIC16F62X

DS40300B-page 96

Preliminary

14.1

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 configuration memory space (2000h

– 3FFFh), which can be accessed only during program-

ming.

FIGURE 14-1: CONFIGURATION WORD

CP1

CP0

CP1

CP0

CPD

LVP

BODEN

MCLRE

FOSC2

PWRTE

WDTE

F0SC1

F0SC0

Address2007h

bit13

bit0

bit 13-10:CP1:CP0: Code Protection bits (2)

Code protection for 2K program memory

= Program memory code protection off

= 0400h-07FFh code protected

= 0200h-07FFh code protected

= 0000h-07FFhcode protected

Code protection for 1K program memory

= Program memory code protection off

= 0200h-03FFh code protected

= 0000h-03FFh code protected

bit 8:

CPD: Data Code Protection bit(3)

= Data memory code protection off

= Data memory code protected

bit 7:

LVP: Low Voltage Programming Enable

= RB4/PGM pin has PGM function, low voltage programming enabled

= RB4/PGM is digital I/O, HV on MCLR must be used for programming

bit 6:

BODEN: Brown-out Detect Enable bit (1)

= BOD enabled

= BOD disabled

bit 5:

MCLRE: RA5/MCLR pin function select

= RA5/MCLR pin function is MCLR

= RA5/MCLR pin function is digital I/O, MCLR internally tied to VDD

bit 3:

PWRTE: Power-up Timer Enable bit (1)

= PWRT disabled

= PWRT enabled

bit 2:

WDTE: Watchdog Timer Enable bit

= WDT enabled

= WDT disabled

bit 4,1-0: FOSC2:FOSC0: Oscillator Selection bits(4)

111

= ER oscillator: CLKOUT function on RA6/OSC2/CLKOUT pin, Resistor on RA7/OSC1/CLKIN

110

= ER oscillator: I/O function on RA6/OSC2/CLKOUT pin, Resistor on RA7/OSC1/CLKIN

101

= INTRC oscillator: CLKOUT function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN

100

= INTRC oscillator: I/O function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN

011

= EC: I/O function on RA6/OSC2/CLKOUT pin, CLKIN on RA7/OSC1/CLKIN

010

= HS oscillator: High speed crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN

001

= XT oscillator: Crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN

000

= LP oscillator: Low power crystal on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN

Note 1:

Enabling Brown-out Reset automatically enables Power-up Timer (PWRT) regardless of the value of bit PWRTE. Ensure the

Power-up Timer is enabled anytime Brown-out Reset is enabled.

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

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

4: When MCLR is asserted in INTRC or ER mode, the internal clock oscillator is disabled.

PIC16F628-20/SS датащи(PDF) 96 Page - Microchip Technology

PIC16F628-20/SS датащи(HTML) 96 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL