PIC16LF1454 Datasheet, PDF (75/418 Pages) Microchip Technology – 14/20-Pin Flash, 8-Bit USB Microcontrollers with XLP Technology

PIC16(L)F1454/5/9
5.9 Register Definitions: Oscillator Control
REGISTER 5-1: OSCCON: OSCILLATOR CONTROL REGISTER
R/W-0/0
SPLLEN
bit 7
R/W-0/0
SPLLMULT
R/W-0/0
R/W-1/1
R/W-1/1
IRCF<3:0>
R/W-1/1
R/W-0/0
R/W-0/0
SCS<1:0>
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7
bit 6
bit 5-2
bit 1-0
SPLLEN: Software PLL Enable bit
If PLLEN in Configuration Words = 1:
SPLLEN bit is ignored. PLL is always enabled (subject to oscillator requirements)
If PLLEN in Configuration Words = 0:
1 = PLL is enabled
0 = PLL is disabled
SPLLMULT: Software PLL Multiplier Select bit
1 = 3x PLL is enabled
0 = 4x PLL is enabled
IRCF<3:0>: Internal Oscillator Frequency Select bits
1111 = 16 MHz or 48 MHz HF (see Section 5.2.2.1 “HFINTOSC”)
1110 = 8 MHz or 24 MHz HF (3x PLL) or 32 MHz HF (4x PLL) (see Section 5.2.2.1 “HFINTOSC”)
1101 = 4 MHz
1100 = 2 MHz
1011 = 1 MHz
1010 = 500 kHz⁽¹⁾
1001 = 250 kHz⁽¹⁾
1000 = 125 kHz⁽¹⁾
0111 = 500 kHz (default upon Reset)
0110 = 250 kHz
0101 = 125 kHz
0100 = 62.5 kHz
001x = 31.25 kHz⁽¹⁾
000x = 31 kHz LF
SCS<1:0>: System Clock Select bits
1x = Internal oscillator block
01 = Secondary oscillator
00 = Clock determined by FOSC<2:0> in Configuration Words.
Note 1: Duplicate frequency derived from HFINTOSC.
 2012 Microchip Technology Inc.
Preliminary
DS41639A-page 75