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PIC16F877-20/L 参数 Datasheet PDF下载

PIC16F877-20/L图片预览
型号: PIC16F877-20/L
PDF下载: 下载PDF文件 查看货源
内容描述: 40分之28引脚8位CMOS闪存微控制器 [28/40-pin 8-Bit CMOS FLASH Microcontrollers]
分类和应用: 闪存微控制器
文件页数/大小: 200 页 / 3544 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC16F87X  
REGISTER 12-1: CONFIGURATION WORD  
CP1 CP0 DEBUG  
bit13  
WRT CPD LVP BODEN CP1 CP0 PWRTE WDTE F0SC1 F0SC0  
bit0  
Register: CONFIG  
Address 2007h  
bit 13-12:  
(2)  
bit 5-4: CP1:CP0: Flash Program Memory Code Protection bits  
11= Code protection off  
10= 1F00h to 1FFFh code protected (PIC16F877, 876)  
10= 0F00h to 0FFFh code protected (PIC16F874, 873)  
01= 1000h to 1FFFh code protected (PIC16F877, 876)  
01= 0800h to 0FFFh code protected (PIC16F874, 873)  
00= 0000h to 1FFFh code protected (PIC16F877, 876)  
00= 0000h to 0FFFh code protected (PIC16F874, 873)  
bit 11:  
DEBUG: In-Circuit Debugger Mode  
1= In-Circuit Debugger disabled, RB6 and RB7 are general purpose I/O pins.  
0= In-Circuit Debugger enabled, RB6 and RB7 are dedicated to the debugger.  
bit 10:  
bit 9:  
Unimplemented: Read as ‘1’  
WRT: Flash Program Memory Write Enable  
1= Unprotected program memory may be written to by EECON control  
0= Unprotected program memory may not be written to by EECON control  
bit 8:  
bit 7:  
bit 6:  
bit 3:  
bit 2:  
CPD: Data EE Memory Code Protection  
1= Code protection off  
0= Data EEPROM memory code protected  
LVP: Low Voltage In-Circuit Serial Programming Enable bit  
1= RB3/PGM pin has PGM function, low voltage programming enabled  
0= RB3 is digital I/O, HV on MCLR must be used for programming  
(1)  
BODEN: Brown-out Reset Enable bit  
1= BOR enabled  
0= BOR disabled  
(1)  
PWRTE: Power-up Timer Enable bit  
1= PWRT disabled  
0= PWRT enabled  
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: 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.  
DS30292B-page 122  
1999 Microchip Technology Inc.  
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