ST72321B STMICROELECTRONICS [STMicroelectronics], ST72321B Datasheet - Page 149

• Manufacturer Part Number: ST72321B
• Description: 64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC, five timers, SPI, SCI, I2C interface
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

CLOCK CHARACTERISTICS (Cont’d)
12.5.4 RC Oscillators
Figure 76. Typical f
f
OSC (RCINT)
Symbol
3.8
3.6
3.4
3.2
4
3
-45
Internal RC oscillator frequency
See
0
Figure 76
OSC(RCINT)
T
Parameter
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 96
Max
5.6
149/187
MHz
Unit