st72f321r STMicroelectronics, st72f321r Datasheet - Page 150

• Manufacturer Part Number: st72f321r
• Description: 64/44-pin 8-bit Mcu With 32 To 60k Flash/rom, Adc, Five Timers, Spi, Sci, I2c Interface
• Manufacturer: STMicroelectronics

ST72321
CLOCK CHARACTERISTICS (Cont’d)
12.5.4 RC Oscillators
Figure 79. Typical f
150/189
f
OSC (RCINT)
Symbol
3.8
3.6
3.4
3.2
4
3
-45
Internal RC oscillator frequency
See
0
Figure 79
OSC(RCINT)
Parameter
T
A
25
(°C)
vs T
Vdd = 5V
Vdd = 5.5V
70
A
130
T
A
=25°C, V
Conditions
Note: To reduce disturbance to the RC oscillator,
it is recommended to place decoupling capacitors
between V
DD
=5V
DD
and V
Min
SS
2
as shown in
Typ
3.5
Figure 99
Max
5.6
MHz
Unit