
2001 Microchip Technology Inc.
DS35007B-page 55
PIC16F84A
9.3
AC (Timing) Characteristics
9.3.1
TIMING PARAMETER SYMBOLOGY
The timing parameter symbols have been created fol-
lowing one of the following formats:
1. TppS2ppS
2. TppS
T
F
Frequency
T
Time
Lowercase letters (pp) and their meanings:
pp
2
to
os, osc
OSC1
ck
CLKOUT
ost
oscillator start-up timer
cy
cycle time
pwrt
power-up timer
io
I/O port
rbt
RBx pins
inp
INT pin
t0
T0CKI
mp
MCLR
wdt
watchdog timer
Uppercase letters and their meanings:
S
F
Fall
P
Period
HHigh
R
Rise
I
Invalid (high impedance)
V
Valid
L
Low
Z
High Impedance