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PIC16F785-E/SS Datasheet(PDF) 35 Page - Microchip Technology |
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PIC16F785-E/SS Datasheet(HTML) 35 Page - Microchip Technology |
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35 / 184 page  © 2005 Microchip Technology Inc. Preliminary DS41249B-page 33 PIC16F785 REGISTER 3-2: OSCCON – OSCILLATOR CONTROL REGISTER (ADDRESS: 8Fh) TABLE 3-4: SUMMARY OF REGISTERS ASSOCIATED WITH CLOCK SOURCES U-0 R/W-1 R/W-1 R/W-0 R-q R-0 R-0 R/W-0 — IRCF2 IRCF1 IRCF0 OSTS(1) HTS LTS SCS bit 7 bit 0 bit 7 Unimplemented: Read as ‘0’ bit 6-4 IRCF<2:0>: Internal Oscillator Frequency Select bits 000 =31 kHz 001 = 125 kHz 010 = 250 kHz 011 = 500 kHz 100 =1 MHz 101 =2 MHz 110 =4 MHz 111 =8 MHz bit 3 OSTS: Oscillator Start-up Time-out Status bit(1) 1 = Device is running from the external system clock defined by FOSC<2:0> 0 = Device is running from the internal system clock (HFINTOSC or LFINTOSC) bit 2 HTS: HFINTOSC (High Frequency – 8 MHz to 125 kHz) Status bit 1 =HFINTOSC is stable 0 = HFINTOSC is not stable bit 1 LTS: LFINTOSC (Low Frequency – 31 kHz) Stable bit 1 = LFINTOSC is stable 0 = LFINTOSC is not stable bit 0 SCS: System Clock Select bit 1 = Internal oscillator is used for system clock 0 = Clock source defined by FOSC<2:0> Note 1: Bit resets to ‘0’ with Two-Speed Start-up and LP, XT or HS selected as the Oscillator mode or Fail-Safe mode is enabled, otherwise this bit resets to ‘1’. Legend: q = value depends on condition 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 Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on: POR, BOR Value on all other Resets 0Ch PIR1 EEIF ADIF CCP1IF C2IF C1IF OSFIF TMR2IF TMR1IF 0000 0000 0000 0000 8Ch PIE1 EEIE ADIE CCP1IE C2IE C1IE OSFIE TMR2IE TMR1IE 0000 0000 0000 0000 8Fh OSCCON — IRCF2 IRCF1 IRCF0 OSTS HTS LTS SCS -110 q000 -110 q000 90h OSCTUNE — — — TUN4 TUN3 TUN2 TUN1 TUN0 ---0 0000 ---u uuuu 2007h(1) CONFIG CPD CP MCLRE PWRTE WDTE FOSC2 FOSC1 FOSC0 — — Legend: x = unknown, u = unchanged, – = unimplemented locations read as ‘0’, q = value depends on condition. Shaded cells are not used by oscillators. Note 1: See Register 15-1 for operation of all Configuration Word bits. |
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