Datasheet
ST72321Rx ST72321ARx ST72321Jx
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CLOCK CHARACTERISTICS (Cont’d)
12.5.4 RC Oscillators
Figure 79. Typical f
OSC(RCINT)
vs T
A
Note: To reduce disturbance to the RC oscillator,
it is recommended to place decoupling capacitors
between V
DD
and V
SS
as shown in Figure 99
Symbol Parameter Conditions Min Typ Max Unit
f
OSC (RCINT)
Internal RC oscillator frequency
See Figure 79
T
A
=25°C, V
DD
=5V
23.55.6MHz
3
3.2
3.4
3.6
3.8
4
-45 0 25 70 130
T
A
(°C)
f
OSC(RCINT)
(MHz)
Vdd = 5V
Vdd = 5.5V