ST72321BR9 STMicroelectronics, ST72321BR9 Datasheet - Page 149
ST72321BR9
Manufacturer Part Number
ST72321BR9
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST72321BJ6.pdf
(187 pages)
Specifications of ST72321BR9
Hdflash Endurance
100 cycles, data retention
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
Four Power Saving Modes
Halt, Active-Halt, Wait and Slow
Main Clock Controller With
Real time base, Beep and Clock-out capabilities
Two 16-bit Timers With
2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
8-bit Pwm Auto-reload Timer With
2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
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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
ST72321BRx, ST72321BARx ST72321BJx, ST72321BKx
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
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