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ST72324BJ2 Datasheet(PDF) 147 Page - STMicroelectronics

Part # ST72324BJ2
Description  8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI
PDF  188 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72324BJ2 Datasheet(HTML) 147 Page - STMicroelectronics

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ST72324B
Electrical characteristics
147/188
12.6.4
RC oscillators
Figure 68.
Typical fOSC(RCINT) vs TA
Note:
To reduce disturbance to the RC oscillator, it is recommended to place decoupling
capacitors between VDD and VSS as shown in Figure 87 on page 165.
12.6.5
PLL characteristics
The user must take the PLL jitter into account in the application (for example in serial
communication or sampling of high frequency signals). The PLL jitter is a periodic effect,
Table 96.
OSCRANGE selection for typical resonators
Supplier
fOSC
(MHz)
Typical ceramic resonators(1)
1.
Resonator characteristics given by the ceramic resonator manufacturer.
Reference
Recommended OSCRANGE
option bit configuration
Murata
2
CSTCC2M00G56A-R0
MP mode(2)
2.
LP mode is not recommended for 2 MHz resonator because the peak to peak amplitude is too small
(>0.8V). For more information on these resonators, please consult www.murata.com.
4
CSTCR4M00G55B-R0
MS mode
8
CSTCE8M00G52A-R0
HS mode
16
CSTCE16M0V51A-R0
HS mode
Table 97.
RC oscillators
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC (RCINT)
Internal RC oscillator frequency
(see Figure 68)
TA =25°C, VDD =5V
2
3.5
5.6
MHz
3
3.2
3.4
3.6
3.8
4
-45
0
25
70
130
TA(°C)
Vdd= 5V
Vdd= 5.5V
Table 98.
PLL characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC
PLL input frequency range
2
4
MHz
∆ fCPU/fCPU Instantaneous PLL jitter(1)
1.
Data characterized but not tested
fOSC = 4 MHz
0.7
2
%



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