Datasheet

 2010 Microchip Technology Inc. DS39935C-page 145
ENC424J600/624J600
17.2 AC Characteristics: ENC424J600/624J600 (Industrial)
TABLE 17-6: OSCILLATOR TIMING CHARACTERISTICS
TABLE 17-7: CLKOUT PIN TIMING SPECIFICATIONS
TABLE 17-8: CLKOUT PIN AC CHARACTERISTICS
AC CHARACTERISTICS
Standard Operating Conditions
-40°C TA +85°C, 3.00V VDD 3.60V (Industrial)
Param.
No.
Sym Characteristic Min Max Units Conditions
FOSC Clock In Frequency 25 25 MHz
T
OSC Clock In Period 40 40 ns
T
DUTY Duty Cycle
(external clock input)
40 60 %
f Clock Frequency Error — 50 ppm
Param.
No.
Sym Characteristic Min Typ Max Units Conditions
FCLKOUT CLKOUT Frequency DC — 33.3 MHz
T
DUTY CLKOUT Duty Cycle 40 50 60 % All prescaler settings except
divide by 12.5
37.5 47.5 57.5 % Divide by 12.5 prescaler
Param.
No.
Sym Characteristic Min Max Units Conditions
t
r
CLKOUT
CLKOUT Pin Rise Time — 3 ns (Note 1)
t
f
CLKOUT CLKOUT Pin Fall Time — 4 ns (Note 1)

CLKOUT CLKOUT Stability (jitter) — ±0.25 %
Note 1: Measured from 0.1 VDD to 0.9 VDD with a load of 10 pF.