Datasheet

 2012 Microchip Technology Inc. Preliminary DS41652A-page 93
PIC16F527
15.3 Timing Parameter Symbology and Load Conditions
The timing parameter symbols have been created following one of the following formats:
FIGURE 15-3: LOAD CONDITIONS
FIGURE 15-4: EXTERNAL CLOCK TIMING
1. TppS2ppS
2. TppS
T
F Frequency T Time
Lowercase subscripts (pp) and their meanings:
pp
2to mcMCLR
ck CLKOUT osc Oscillator
cy Cycle time os OSC1
drt Device Reset Timer t0 T0CKI
io I/O port wdt Watchdog Timer
Uppercase letters and their meanings:
S
FFall PPeriod
HHigh RRise
I Invalid (high-impedance) V Valid
L Low Z High-impedance
CL
VSS
Pin
Legend:
C
L = 50 pF for all pins except OSC2
15 pF for OSC2 in XT, HS or LP
modes when external clock
is used to drive OSC1
OSC1
Q4
Q1 Q2
Q3 Q4 Q1
133
44
2