PIC16F747 Microchip Technology Inc., PIC16F747 Datasheet - Page 46

• Manufacturer Part Number: PIC16F747
• Description: 28/40/44-pin, 8-bit Cmos Flash Microcontrollers With 10-bit A/d And Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC16F7X7
FIGURE 4-9:
DS30498C-page 44
Note 1:
Primary Clock
Primary Clock
System Clock
System Clock
Secondary
Secondary
SCS<1:0>
SCS<1:0>
Oscillator
Oscillator
Program
Program
2:
3:
4:
5:
6:
Counter
Counter
OSC1
OSC1
OSC2
OSC2
OSTS
OSTS
T
T
T
T
T
Refer to parameter D032 in Section 18.0 “Electrical Characteristics”.
OSC
SCS
INP
T
DLY
1
P
= 32 s typical.
= 30.52 s.
= 8 T
= 1 T
= 50 ns minimum.
Q4
Q4
PC
PC
INP OR
INP OR
TIMING FOR TRANSITION BETWEEN SEC_RUN/RC_RUN AND
PRIMARY CLOCK
1 T
8 T
Q1
Q1
T
T
1
1
P
P
.
.
T
T
OST (6)
OST (6)
Q2
Q2
PC + 1
PC + 1
T
T
Q3
Q3
DLY
DLY
(5)
(5)
T
T
OSC
OSC
Q4
Q4
(3)
(3)
T
T
Q1
Q1
T
T
1
1
P (1)
P (1)
or T
or T
INP (2)
INP (2)
T
T
SCS (4)
SCS (4)
PC + 2
PC + 2
Q2
Q2
 2004 Microchip Technology Inc.
Q3 Q4
Q3 Q4
Q1
Q1
Q2
Q2
PC + 3
PC + 3
Q3 Q4
Q3 Q4