Microchip Technology ARD00385 Data Sheet
2009-2011 Microchip Technology Inc.
DS39957D-page 57
PIC18F87K90 FAMILY
FIGURE 4-3:
TRANSITION TIMING TO RC_RUN MODE
FIGURE 4-4:
TRANSITION TIMING FROM RC_RUN MODE TO PRI_RUN MODE
Q4
Q3
Q2
OSC1
Peripheral
Program
Q1
LF-INTOSC
Q1
Counter
Clock
CPU
Clock
PC + 2
PC
1
2
3
n-1
n
Clock Transition
(1)
Q4
Q3
Q2
Q1
Q3
Q2
PC + 4
Note 1:
Clock transition typically occurs within 2-4 T
OSC
.
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)