
1996 Microchip Technology Inc.
DS30412C-page 153
PIC17C4X
Applicable Devices 42 R42 42A 43 R43 44
17.3
Timing Parameter Symbology
The timing parameter symbols have been created using one of the following formats:
1. TppS2ppS
2. TppS
T
F
Frequency
T
Time
Lowercase symbols (pp) and their meanings:
pp
ad
Address/Data
ost
Oscillator Start-up Timer
al
ALE
pwrt
Power-up Timer
cc
Capture1 and Capture2
rb
PORTB
ck
CLKOUT or clock
rd
RD
dt
Data in
rw
RD or WR
in
INT pin
t0
T0CKI
io
I/O port
t123
TCLK12 and TCLK3
mc
MCLR
wdt
Watchdog Timer
oe
OE
wr
WR
os
OSC1
Uppercase symbols and their meanings:
S
D
Driven
L
Low
E
Edge
P
Period
F
Fall
R
Rise
H
High
V
Valid
I
Invalid (Hi-impedance)
Z
Hi-impedance