PIC12F508/509/16F505
10.3 Timing Parameter Symbology and Load Conditions – PIC12F508/509/16F505
The timing parameter symbols have been created following one of the following formats:
1. TppS2ppS
2. TppS
T
F
Frequency
T Time
Lowercase subscripts (pp) and their meanings:
pp
2
to
mc
osc
os
MCLR
ck
cy
drt
io
CLKOUT
Cycle time
Device Reset Timer
I/O port
Oscillator
OSC1
t0
T0CKI
wdt
Watchdog Timer
Uppercase letters and their meanings:
S
F
H
I
Fall
P
R
V
Z
Period
High
Rise
Invalid (high-impedance)
Low
Valid
L
High-impedance
FIGURE 10-3:
LOAD CONDITIONS – PIC12F508/509/16F505
Legend:
CL
CL = 50 pF for all pins except OSC2
pin
15 pF for OSC2 in XT, HS or LP
modes when external clock
is used to drive OSC1
VSS
FIGURE 10-4:
EXTERNAL CLOCK TIMING – PIC12F508/509/16F505
Q4
Q3
Q4
Q1
Q1
Q2
OSC1
1
3
3
4
4
2
© 2007 Microchip Technology Inc.
Preliminary
DS41236C-page 73
MICROCHIP [ MICROCHIP ]
