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ST72325AR7-Auto Datasheet(PDF) 219 Page - STMicroelectronics

Part # ST72325AR7-Auto
Description  SCI asynchronous serial interface
PDF  243 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72325AR7-Auto Datasheet(HTML) 219 Page - STMicroelectronics

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ST72325xxx-Auto
Electrical characteristics
Doc ID 13770 Rev 3
219/243
19.12
10-bit ADC characteristics
Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.
Table 137.
10-bit ADC characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fADC
ADC clock frequency
0.4
2
MHz
VAREF
Analog reference voltage
0.7*VDD < VAREF < VDD
3.8
VDD
V
VAIN
Conversion voltage range(1)
VSSA
VAREF
Ilkg
Input leakage current for analog
input(2)
-40°C < TA < 85°C range
±250
nA
Other TA ranges
±1
µA
RAIN
External input impedance
See
Figure 95
and
Figure 96
k
CAIN
External capacitor on analog input
pF
fAIN
Variation frequency of analog input
signal
Hz
CADC
Internal sample and hold capacitor
12
pF
tADC
Conversion time (Sample + Hold)
fCPU = 8 MHz, speed = 0,
fADC =2MHz
7.5
µs
tADC
No. of sample capacitor loading
cycles
4
1/fADC
No. of hold conversion cycles
11
1.
Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10k
). Data
based on characterization results, not tested in production.
2.
Injecting negative current on adjacent pins may result in increased leakage currents. Software filtering of the converted
analog value is recommended.



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