参数资料
型号: ST72F651AR6T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, MICROCONTROLLER, PQFP64
封装: 10 X 10 MM, ROHS COMPLIANT, TQFP-64
文件页数: 55/161页
文件大小: 2656K
代理商: ST72F651AR6T1
ST72651AR6
148/161
Doc ID 7215 Rev 4
13.12 8-BIT ADC CHARACTERISTICS
Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.
Figure 93. Typical Application with ADC
Notes:
1. When VDDA and VSSA pins are not available on the pinout, the ADC refer to VDD and VSS .
2. 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.
3. The stabilization time of the AD converter is masked by the first tLOAD. The first conversion after the enable is then
always valid.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fADC
ADC clock frequency
4
MHz
VAIN
Conversion range voltage 1)
VSSA
VDDA
V
RAIN
External input resistor
10 2)
k
Ω
CADC
Internal sample and hold capacitor
6
pF
tSTAB
Stabilization time after ADC enabled
fCPU=8MHz, fADC=2MHz
0 3)
μs
tADC
Conversion time (Sample+Hold)
6
- Sample capacitor loading time
- Hold conversion time
4
8
1/fADC
AINx
ST72XXX
CIO
~2pF
VDD
IL
±1
μA
VT
0.6V
VT
0.6V
VAIN
RAIN
VDDA
VSSA
0.1
μF
VDD
ADC
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