ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS
OSCILLATOR CHARACTERISTICS
(V = 5V ± 10%, T = –40°C to +125°C, C
= 50pF, f = 24MHz, unless otherwise specified)
DD
A
Load
INTCLK
Value
Symbol
Parameter
Comment
Unit
(1)
Min
Typ
Max
Fundamental mode crystal or ex-
ternal clock applied to OSCOUT
f
Crystal Frequency
3
5
MHz
OSC
(2)
(2)
g
Oscillator Transconductance
Clock Input High Level
Clock Input Low Level
Oscillator Start-up Time
1.2
1.5
mA/V
V
m
(2)
V
External Clock
External Clock
2
V
+ 0.3
DD
IHCK
(2)
V
-0.3
0.4
V
ILCK
STUP
LOAD
(2)
T
5
ms
µA
kΩ
mV
I
100
128
R
90
180
POL
OSC
(2)
V
Oscillation Level
600
Note:
(1) Unless otherwise stated, typical data are based on T = 25° C and V = 5V. They are only reported for design guide lines not tested in
A
DD
production.
(2) Value guaranteed by design.
386/426
1