PIC18F6390 Datasheet, PDF (45/412 Pages) Microchip Technology – 64/80-Pin Flash Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F6390/6490/8390/8490
FIGURE 3-1:
TRANSITION TIMING FOR ENTRY TO SEC_RUN MODE
Q1 Q2 Q3 Q4 Q1
Q2 Q3 Q4 Q1 Q2 Q3
T1OSI
OSC1
1
2
3
n-1 n
Clock Transition
CPU
Clock
Peripheral
Clock
Program
Counter
PC
PC + 2
PC + 4
FIGURE 3-2:
TRANSITION TIMING FROM SEC_RUN MODE TO PRI_RUN MODE (HSPLL)
Q1
Q2
Q3
Q4 Q1
Q2 Q3 Q4 Q1 Q2 Q3
T1OSI
OSC1
PLL Clock
Output
CPU Clock
TOST⁽¹⁾
TPLL⁽¹⁾
1 2 _{n-1 n}
Clock
Transition
Peripheral
Clock
Program
Counter
PC
PC + 2
SCS1:SCS0 bits changed
OSTS bit set
Note 1: TOST = 1024 TOSC; TPLL = 2 ms (approx). These intervals are not shown to scale.
PC + 4
 2004 Microchip Technology Inc.
Preliminary
DS39629B-page 43