Microchip Technology MA160014 Data Sheet
PIC18(L)F2X/4XK22
DS41412F-page 50
2010-2012 Microchip Technology Inc.
FIGURE 3-3:
TRANSITION TIMING FROM RC_RUN MODE TO PRI_RUN MODE
TABLE 3-2:
INTERNAL OSCILLATOR FREQUENCY STABILITY BITS
IRCF<2:0>
INTSRC
MFIOSEL
Selected Oscillator
Selected Oscillator Stable when:
000
0
x
LFINTOSC
LFIOFS = 1
000
1
0
HFINTOSC
HFIOFS = 1
000
1
1
MFINTOSC
MFIOFS = 1
010
or 001
x
0
HFINTOSC
HFIOFS = 1
010
or 001
x
1
MFINTOSC
MFIOFS = 1
011
– 111
x
x
HFINTOSC
HFIOFS = 1
Q1
Q3 Q4
OSC1
Peripheral
Program
PC
INTOSC
PLL Clock
Q1
PC + 4
Q2
Output
Q3
Q4
Q1
CPU Clock
PC + 2
Clock
Counter
Q2
Q2
Q3
Note 1: T
OST
= 1024 T
OSC
; T
PLL
= 2 ms (approx). These intervals are not shown to scale.
2: Clock transition typically occurs within 2-4 T
OSC
.
SCS<1:0> bits Changed
T
PLL
(1)
1
2
n-1
n
Clock
OSTS bit Set
Transition
(2)
Multiplexer
T
OST
(1)