ST72325 datasheet(170/196 Pages) STMICROELECTRONICS

부품명	ST72325

상세설명	8-bit MCU with 16 to 60K Flash/ROM, ADC, CSS, 5 timers, SPI, SCI, I2C interface

PDF	196 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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12.12 10-BIT ADC CHARACTERISTICS

Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.

Notes:

1. 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.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fADC

ADC clock frequency

0.4

MHz

VAREF

Analog reference voltage

0.7*VDD ≤VAREF ≤VDD

3.8

VDD

VAIN

Conversion voltage range 1)

VSSA

VAREF

Ilkg

Positive input leakage current for analog

input

-40°C

≤TA≤85°C range

±250

Other TA ranges

±1

µA

Negative input leakage current on ro-

bust analog pins

VIN<VSS, | IIN |< 400µA

on adjacent robust ana-

log pin

µA

RAIN

External input impedance

see

Figure 95

and

Figure 96

Ω

CAIN

External capacitor on analog input

fAIN

Variation freq. of analog input signal

CADC

Internal sample and hold capacitor

tADC

Conversion time (Sample+Hold)

fCPU=8MHz, SPEED=0 fADC=2MHz

7.5

µs

tADC

- No of sample capacitor loading cycles

- No. of Hold conversion cycles

1/fADC

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