ST72325S6 STMicroelectronics, ST72325S6 Datasheet - Page 150
ST72325S6
Manufacturer Part Number
ST72325S6
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST72325K4.pdf
(197 pages)
Specifications of ST72325S6
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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ST72325xx
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
12.5.3 Crystal and Ceramic Resonator Oscillators
The ST7 internal clock can be supplied with four
different Crystal/Ceramic resonator oscillators. All
the information given in this paragraph is based on
characterization results with specified typical ex-
ternal components. In the application, the resona-
tor and the load capacitors have to be placed as
Notes:
1. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small R
Refer to crystal/ceramic resonator manufacturer for more details.
2. Data based on characterisation results, not tested in production.
150/197
f
R
C
C
i
2
OSC
Symbol
Symbol
F
L1
L2
Oscillator Frequency
Feedback resistor
Recommended load capacitance ver-
sus equivalent serial resistance of the
crystal or ceramic resonator (R
OSC2 driving current
Parameter
Parameter
2)
1)
V
f
f
f
f
OSC
OSC
OSC
OSC
DD
S
)
3)
=5V:
= 2MHz, C0 = 6pF, Cl1 = Cl2 = 68pF
= 4MHz, C0 = 6pF, Cl1 = Cl2 = 68pF
= 8MHz, C0 = 6pF, Cl1 = Cl2 = 40pF
= 16MHz, C0 = 7pF, Cl1 = Cl2 = 20pF
f
f
f
f
OSC
OSC
OSC
OSC
= 1 to 2 MHz
= 2 to 4 MHz
= 4 to 8 MHz
= 8 to 16 MHz
Conditions
close as possible to the oscillator pins in order to
minimize output distortion and start-up stabiliza-
tion time. Refer to the crystal/ceramic resonator
manufacturer for more details (frequency, pack-
age, accuracy...).
Conditions
Min
Typ
20
20
20
15
15
426
425
456
660
1
Max
Max
16
40
60
50
35
35
S
MHz
Unit
Unit
kΩ
pF
µA
value.
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