Datasheet

PIC16(L)F1782/3
DS41579D-page 58 Preliminary  2011-2012 Microchip Technology Inc.
FIGURE 6-1: SIMPLIFIED PIC
®
MCU CLOCK SOURCE BLOCK DIAGRAM
Oscillator
T1OSCEN
Enable
Oscillator
T1OSO
T1OSI
Timer1 Clock Source Option
for other modules
OSC1
OSC2
Sleep
LP, XT, HS, RC, EC
T1OSC
To CPU and
Postscaler
MUX
16 MHz
8 MHz
4 MHz
2 MHz
1 MHz
250 kHz
500 kHz
IRCF<3:0>
31 kHz
500 kHz
Source
Internal
Oscillator
Block
WDT, PWRT, Fail-Safe Clock Monitor
16 MHz
INTOSC
(HFINTOSC)
SCS<1:0>
HFPLL
31 kHz (LFINTOSC)
Two-Speed Start-up and other modules
Oscillator
31 kHz
Source
500 kHz
(MFINTOSC)
125 kHz
31.25 kHz
62.5 kHz
Peripherals
Sleep
External
Timer1
4 x PLL
÷ 2
PSMC 64 MHz
1X
01
00
00
01
10
0
1
1
0
PRIMUX
PSMCMUX
PLLMUX
0000
1111
SCS FOSC<2:0>
PLLEN or
SPLLEN
PRIMUX PSMCMUX PLLMUX
=00
=100
01110
11101
≠100
00110
1
(1)
0000
≠00 XXX X X 1 XX
Note 1: This selection should not be made when the PSMC is using the 64 MHz clock option.
FOSC