
PIC17C4X
DS30412C-page 182
1996 Microchip Technology Inc.
Applicable Devices 42 R42 42A 43 R43 44
19.4
Timing Parameter Symbology
The timing parameter symbols have been created following one of the following formats:
1. TppS2ppS
3. TCC:ST
(I2C specications only)
2. TppS
4. Ts
(I2C specications only)
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