参数资料
型号: PIC16LC556-04/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, SSOP-20
文件页数: 33/104页
文件大小: 697K
代理商: PIC16LC556-04/SS
PIC16C55X
DS40143A-page 34
Preliminary
1996 Microchip Technology Inc.
7.1
Conguration Bits
The conguration bits can be programmed (read as '0')
or left unprogrammed (read as '1') to select various
device congurations. 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/conguration
memory
space
(2000h – 3FFFh), which can be accessed only during
programming.
FIGURE 7-1:
CONFIGURATION WORD
CP1
CP0
CP1
CP0
CP1
CP0
Reserved CP1
CP0
PWRTE WDTE F0SC1 F0SC0
CONFIG
Address
REGISTER:
2007h
bit13
bit0
bit 13-8
CP<1:0>: Code protection bits(1)
5-4:
11
= Code protection off
10
= Upper half of program memory code protected
01
= Upper 3/4th of program memory code protected
00
= 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
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.
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