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ST7L09 Datasheet(PDF) 91 Page - STMicroelectronics

Part # ST7L09
Description  8-bit MCU for automotive with single voltage Flash memory, data EEPROM, ADC, timers, SPI
PDF  104 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7L09 Datasheet(HTML) 91 Page - STMicroelectronics

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ADC CHARACTERISTICS (Cont’d)
13.11 8-BIT ADC CHARACTERISTICS
Subject to general operating conditions for VDD, fOSC and TA (-40 to +105°C), unless otherwise specified.
Notes:
1. Unless otherwise specified, typical data is based on TA = 25°C and VDD -VSS = 5V. They are given only as design
guidelines 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 68. Typical Application with ADC
Symbol
Parameter
Conditions
Min2) Typ1) Max2)
Unit
fADC
ADC clock frequency
4
MHz
VAIN
Conversion voltage range
VSS
VDD
V
RAIN
External input resistor
103)
k
Ω
CADC
Internal sample and hold capacitor
VDD = 5V
3
pF
tSTAB
Stabilization time after ADC enable
fCPU = 8 MHz, fADC = 4 MHz
04)
µs
tCONV
Conversion time (tSAMPLE +tHOLD)3
tSAMPLE
Sample capacitor loading time
4
1/fADC
tHOLD
Hold conversion time
8
AINx
ST7XX
VDD
IL
±1µA
VT
0.6V
VT
0.6V
CADC
3pF
VAIN
RAIN
8-bit A/D
Conversion
2k
Ω(max)
CAIN
1



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