PIC24FJ64GA705 Datasheet, PDF (333/412 Pages) –

PIC24FJ256GA705 FAMILY
REGISTER 29-4: FOSCSEL CONFIGURATION REGISTER
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 23
bit 16
U-1
U-1
U-1
U-1
U-1
U-1
r-0
—
—
—
—
—
—
—
bit 15
r-0
—
bit 8
R/PO-1
IESO
bit 7
R/PO-1
R/PO-1
R/PO-1
R/PO-1
PLLMODE3 PLLMODE2 PLLMODE1 PLLMODE0
R/PO-1
FNOSC2
R/PO-1
FNOSC1
R/PO-1
FNOSC0
bit 0
Legend:
R = Readable bit
-n = Value at POR
PO = Program Once bit
W = Writable bit
‘1’ = Bit is set
r = Reserved bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 23-10
bit 9-8
bit 7
bit 6-3
bit 2-0
Unimplemented: Read as ‘1’
Reserved: Maintain as ‘0’
IESO: Two-Speed Oscillator Start-up Enable bit
1 = Starts up the device with FRC, then automatically switches to the user-selected oscillator when
ready
0 = Starts up the device with the user-selected oscillator source
PLLMODE<3:0>: Frequency Multiplier Select bits
1111 = No PLL is used (PLLEN bit is unavailable)
1110 = 8x PLL is selected
1101 = 6x PLL is selected
1100 = 4x PLL is selected
0111 = 96 MHz PLL is selected (Input Frequency = 48 MHz)
0110 = 96 MHz PLL is selected (Input Frequency = 32 MHz)
0101 = 96 MHz PLL is selected (Input Frequency = 24 MHz)
0100 = 96 MHz PLL is selected (Input Frequency = 20 MHz)
0011 = 96 MHz PLL is selected (Input Frequency = 16 MHz)
0010 = 96 MHz PLL is selected (Input Frequency = 12 MHz)
0001 = 96 MHz PLL is selected (Input Frequency = 8 MHz)
0000 = 96 MHz PLL is selected (Input Frequency = 4 MHz)
FNOSC<2:0>: Oscillator Selection bits
111 = Oscillator with Frequency Divider (OSCFDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with PLL (FRCPLL)
000 = Fast RC Oscillator (FRC)
 2016 Microchip Technology Inc.
DS30010118B-page 333