Datasheet

© 2009 Microchip Technology Inc. DS40044G-page 143
PIC16F627A/628A/648A
17.5 Timing Parameter Symbology
The timing parameter symbols have been created with one of the following formats:
FIGURE 17-3: LOAD CONDITIONS
1. TppS2ppS
2. TppS
T
F Frequency T Time
Lowercase subscripts (pp) and their meanings:
pp
ck CLKOUT osc OSC1
io I/O port t0 T0CKI
mc MCLR
Uppercase letters and their meanings:
S
FFall P Period
HHigh R Rise
I Invalid (High-impedance) V Valid
L Low Z High-Impedance
VDD/2
CL
RL
Pin Pin
V
SS
VSS
CL
RL =464Ω
C
L = 50 pF for all pins except OSC2
15 pF for OSC2 output
L
oad Condition 1 Load Condition 2