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PIC16LF18323-E/PQTP 数据表(PDF) 50 Page - Microchip Technology |
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PIC16LF18323-E/PQTP 数据表(HTML) 50 Page - Microchip Technology |
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50 / 442 page  PIC16(L)F18313/18323 DS40001799A-page 50 Preliminary 2015 Microchip Technology Inc. 4.2 Register Definitions: Configuration Words REGISTER 4-1: CONFIGURATION WORD 1: OSCILLATORS R/P-1 U-1 R/P-1 U-1 U-1 R/P-1 FCMEN — CSWEN — —CLKOUTEN bit 13 bit 8 U-1 R/P-1 R/P-1 R/P-1 U-1 R/P-1 R/P-1 R/P-1 — RSTOSC2 RSTOSC1 RSTOSC0 — FEXTOSC2 FEXTOSC1 FEXTOSC0 bit 7 bit 0 Legend: R = Readable bit P = Programmable bit U = Unimplemented bit, read as ‘1’ ‘0’ = Bit is cleared ‘1’ = Bit is set n = Value when blank or after Bulk Erase bit 13 FCMEN: Fail-Safe Clock Monitor Enable bit 1 = ON FSCM timer enabled 0 = OFF FSCM timer disabled bit 12 Unimplemented: Read as ‘1’ bit 11 CSWEN: Clock Switch Enable bit 1 = ON Writing to NOSC and NDIV is allowed 0 = OFF The NOSC and NDIV bits cannot be changed by user software bit 10-9 Unimplemented: Read as ‘1’ bit 8 CLKOUTEN: Clock Out Enable bit If FEXTOSC = EC, HS, HT or LP, then this bit is ignored; otherwise: 1 = OFF CLKOUT function is disabled; I/O or oscillator function on OSC2 0 = ON CLKOUT function is enabled; FOSC/4 clock appears at OSC2 Otherwise This bit is ignored. bit 7 Unimplemented: Read as ‘1’ bit 6-4 RSTOSC<2:0>: Power-up Default Value for COSC bits This value is the Reset default value for COSC, and selects the oscillator first used by user software 111 = EXT1X EXTOSC operating per FEXTOSC<2:0> bits 110 = HFINT1 HFINTOSC (1 MHz) 101 = Reserved 100 = LFINT LFINTOSC 011 = SOSC SOSC (32.768 kHz) 010 = Reserved 001 = EXT4X EXTOSC with 4x PLL; EXTOSC operating per FEXTOSC bits 000 = HFINT32 HFINTOSC (32 MHz) bit 3 Unimplemented: Read as ‘1’ bit 2-0 FEXTOSC<2:0>: FEXTOSC External Oscillator mode Selection bits 111 = ECH EC(External Clock) above 8 MHz 110 = ECM EC(External Clock) for 100 kHz to 8 MHz 101 = ECL EC(External Clock) below 100 kHz 100 = OFF Oscillator not enabled 011 = Unimplemented 010 = HS HS(Crystal oscillator) above 8 MHz 001 = XT HT(Crystal oscillator) above 100 kHz, below 8 MHz 000 = LP LP(Crystal oscillator) optimized for 32.768 kHz |
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