Datasheet

PIC18F87J11 FAMILY
DS39778E-page 334  2007-2012 Microchip Technology Inc.
REGISTER 25-3: CONFIG2L: CONFIGURATION REGISTER 2 LOW (BYTE ADDRESS 300002h)
R/WO-1 R/WO-1 U-0 U-0 U-0 R/WO-1 R/WO-1 R/WO-1
IESO FCMEN
— — — FOSC2 FOSC1 FOSC0
bit 7 bit 0
Legend:
R = Readable bit WO = Write-Once bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7 IESO: Two-Speed Start-up (Internal/External Oscillator Switchover) Control bit
1 = Two-Speed Start-up is enabled
0 = Two-Speed Start-up is disabled
bit 6 FCMEN: Fail-Safe Clock Monitor Enable bit
1 = Fail-Safe Clock Monitor is enabled
0 = Fail-Safe Clock Monitor is disabled
bit 5-3 Unimplemented: Read as ‘0’
bit 2-0 FOSC<2:0>: Oscillator Selection bits
111 = EC oscillator with PLL enabled; CLKO on RA6 (ECPLL)
110 = EC oscillator; CLKO on RA6 (EC)
101 = HS oscillator with PLL enabled (HSPLL)
100 = HS oscillator (HS)
011 = Internal oscillator with PLL enabled; CLKO on RA6, port function on RA7 (INTPLL1)
010 = Internal oscillator with PLL enabled; port function on RA6 and RA7 (INTPLL2)
001 = Internal oscillator block; CLKO on RA6, port function on RA7 (INTIO1)
000 = Internal oscillator block; port function on RA6 and RA7 (INTIO2)