PIC16F1938_13 Datasheet, PDF (60/488 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver

PIC16(L)F1938/9
FIGURE 5-1:
SIMPLIFIED PIC^® MCU CLOCK SOURCE BLOCK DIAGRAM
OSC2
OSC1
T1OSO
T1OSI
External
Oscillator
Sleep
Oscillator ^Timer1
T1OSCEN
Enable
Oscillator
Internal
Oscillator
Block
HFPLL
500 kHz
Source
31 kHz
Source
16 MHz
(HFINTOSC)
500 kHz
(MFINTOSC)
LP, XT, HS, RC, EC
4 x PLL
FOSC<2:0> = 100
T1OSC
Sleep
CPU and
Peripherals
IRCF<3:0>
16 MHz
8 MHz
4 MHz
2 MHz
1 MHz
500 kHz
250 kHz
125 kHz
62.5 kHz
31.25 kHz
31 kHz
Internal Oscillator
Clock
Control
FOSC<2:0> SCS<1:0>
Clock Source Option
for other modules
31 kHz (LFINTOSC)
WDT, PWRT, Fail-Safe Clock Monitor
Two-Speed Start-up and other modules
DS40001574C-page 60
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