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ST7-STICK45 데이터시트(PDF) 104 Page - STMicroelectronics

부품명 ST7-STICK45
상세설명  8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
PDF  124 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ST7-STICK45 데이터시트(HTML) 104 Page - STMicroelectronics

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13.11 8-BIT ADC CHARACTERISTICS
TA = -40°C to 85°C, unless otherwise specified
Notes:
1. Unless otherwise specified, typical data are based on TA=25°C and VDD-VSS=5V. They are given only as design guide-
lines and are not tested.
2. Data based on characterization results, not tested in production.
3. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10k
Ω). Data
based on characterization results, not tested in production.
4. The stabilization time of the AD converter is masked by the first tLOAD. The first conversion after the enable is then
always valid.
Figure 81. Typical Application with ADC
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fADC
ADC clock frequency
4
MHz
VAIN
Conversion voltage range
VSS
VDD
V
RAIN
External input resistor
10 1)
k
Ω
CADC
Internal sample and hold capacitor
VDD=5V
3
pF
tSTAB
Stabilization time after ADC enable
fCPU=8MHz, fADC=4MHz
0 2)
µs
tCONV
Conversion time (tSAMPLE+tHOLD)3
tSAMPLE Sample capacitor loading time
4
1/fADC
tHOLD
Hold conversion time
8
AINx
ST7XX
VDD
IL
±1
µA
VT
0.6V
VT
0.6V
CADC
3pF
VAIN
RAIN
8-Bit A/D
Conversion
2k
Ω(max)
CAIN



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