PIC17C44 Datasheet, PDF (153/241 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

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
Lowercase symbols (pp) and their meanings:
pp
ad
Address/Data
al
ALE
cc
Capture1 and Capture2
ck
CLKOUT or clock
dt
Data in
in
INT pin
io
I/O port
mc
MCLR
oe
OE
os
OSC1
Uppercase symbols and their meanings:
S
D
Driven
E
Edge
F
Fall
H
High
I
Invalid (Hi-impedance)
T
Time
ost
Oscillator Start-up Timer
pwrt
Power-up Timer
rb
PORTB
rd
RD
rw
RD or WR
t0
T0CKI
t123
TCLK12 and TCLK3
wdt
Watchdog Timer
wr
WR
L
Low
P
Period
R
Rise
V
Valid
Z
Hi-impedance
© 1996 Microchip Technology Inc.
DS30412C-page 153