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PIC16F720-E/ML 数据表(PDF) 74 Page - Microchip Technology |
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PIC16F720-E/ML 数据表(HTML) 74 Page - Microchip Technology |
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74 / 244 page  PIC16F/LF720/721 DS41430A-page 74 2010 Microchip Technology Inc. REGISTER 8-1: CONFIGURATION WORD 1 R/P-1 R/P-1 U-1 U-1 R/P-1 R/P-1 — —DEBUG(1) PLLEN — — BOREN1 BOREN0 bit 15 bit 8 U-1 R/P-1 R/P-1 R/P-1 R/P-1 U-1 R/P-1 R/P-1 —CP MCLRE PWRTE WDTEN —FOSC1 FOSC0 bit 7 bit 0 Legend: P = Programmable bit 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 bit 13 DEBUG(1): Debugger Mode bit 0 = Background debugger is enabled 1 = Background debugger is disabled bit 12 PLLEN: INTOSC PLL Enable bit 0 = INTOSC frequency is 500 kHz 1 = INTOSC frequency is 16 MHz (32x) bit 11-10 Unimplemented: Read as ‘1’ bit 9-8 BOREN<1:0>: Brown-out Reset Enable bits (2) 0x = Brown-out Reset disabled 10 = Brown-out Reset enabled during operation and disabled in Sleep 11 = Brown-out Reset enabled bit 7 Unimplemented: Read as ‘1’ bit 6 CP: Flash Program Memory Code Protection bit PIC16F720/721 0 = 0000h to 07FFh/0FFFh code protection on 1 = Code protection off bit 5 MCLRE: RA3/MCLR/VPP Pin Function Select bit 1 =RA3/MCLR/VPP pin function is MCLR; Weak pull-up enabled. 0 =RA3/MCLR/VPP pin function is digital input; MCLR internally disabled; Weak pull-up disabled bit 4 PWRTE: Power-up Timer Enable bit 0 = PWRT enabled 1 = PWRT disabled bit 3 WDTEN: Watchdog Timer Enable bit 0 = WDT disabled 1 = WDT enabled bit 2 Unimplemented: Read as ‘1’ bit 1-0 FOSC<1:0>: Oscillator Selection bits 11 = EC oscillator: CLKOUT function on RA4/CLKOUT pin, CLKIN on RA5/CLKIN 10 = EC oscillator: I/O function on RA4/CLKOUT pin, CLKIN on RA5/CLKIN 01 = INTOSC oscillator: CLKOUT function on RA4/CLKOUT pin, I/O function on RA5/CLKIN 00 = INTOSCIO oscillator: I/O function on RA4/CLKOUT pin, I/O function on RA5/CLKIN Note 1: The Configuration bit is managed automatically by the device development tools. The user should not attempt to manu- ally write this bit location. However, the user should ensure that this location has been programmed to a ‘1’ and the device checksum is correct for proper operation of production software. 2: Fixed Voltage Reference is automatically enabled whenever the BOR is enabled. |
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