PIC16F87-E Datasheet, PDF (48/228 Pages) Microchip Technology – 18/20/28-Pin Enhan lashMicrocontrollers with nanoWatt Technology

PIC16F87/88
FIGURE 4-9:
TIMING FOR TRANSITION BETWEEN SEC_RUN/RC_RUN AND PRIMARY CLOCK
Q4
Secondary
Oscillator
OSC1
OSC2
Primary Clock
TT1P⁽¹⁾ or TINP⁽²⁾
Q1
Q2
Q3
Q4
Q1
TOST
TOSC⁽³⁾
TSCS⁽⁴⁾
Q2 Q3 Q4 Q1 Q2 Q3 Q4
System Clock
SCS<1:0>
OSTS
Program
Counter
PC
TDLY⁽⁵⁾
PC + 1
Note
1: TT1P = 30.52 µs.
2: TINP = 32 µs typical.
3: TOSC = 50 ns minimum.
4: TSCS = 8 TINP OR 8 TT1P.
5: TDLY = 1 TINP OR 1 TT1P.
PC + 2
PC + 3
DS30487C-page 46
 2005 Microchip Technology Inc.