PIC17C4X
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:
2
1. TppS2ppS
2. TppS
3. TCC:ST
4. Ts
(I C specifications only)
2
(I C specifications only)
T
F
Frequency
T
Time
Lowercase symbols (pp) and their meanings:
pp
ad
Address/Data
ALE
ost
pwrt
rb
Oscillator Start-Up Timer
Power-Up Timer
PORTB
al
cc
ck
dt
Capture1 and Capture2
CLKOUT or clock
Data in
rd
RD
rw
RD or WR
in
INT pin
t0
T0CKI
io
I/O port
t123
wdt
wr
TCLK12 and TCLK3
Watchdog Timer
WR
mc
oe
os
MCLR
OE
OSC1
Uppercase symbols and their meanings:
S
D
E
F
H
I
Driven
L
Low
Edge
P
R
V
Z
Period
Rise
Fall
High
Valid
Invalid (Hi-impedance)
Hi-impedance
DS30412C-page 182
1996 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
