ST7MC1 datasheet(280/308 Pages) STMICROELECTRONICS

部品番号	ST7MC1

部品情報	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI

PDF	308 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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280 / 308 page

ST7MC1/ST7MC2

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12.14 10-BIT ADC CHARACTERISTICS

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

Figure 157. RAIN max. vs fADC with CAIN=0pF

Figure 158. Recommended CAIN & RAIN values.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VAREF

Analog Reference Voltage

VDD

fADC

ADC clock frequency

MHz

VAIN

Conversion voltage range 1)

VSSA

VAREF

Ilkg

Positive input leakage current for

analog input

±1

µA

Negative input leakage current on

analog pins

VIN<VSS, | IIN |< 400µA on

adjacent analog pin

µA

RAIN

External input impedance

see

Figure

157 and

Figure

158 2)3)4)

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, fADC=4MHz,

ADSTS bit in MCCBCR

3.5

µs

- Sample capacitor loading time

- Hold conversion time

1/fADC

Conversion time (Sample+Hold)

fCPU=8MHz, fADC=4MHz,

ADSTS bit in MCCBCR

6.5

µs

- Sample capacitor loading time

- Hold conversion time

1/fADC

RAREF

Analog Reference Input Resistor

Ω

010

CPARASITIC (pF)

2 MHz

1 MHz

0.1

100

1000

0.01

0.1

fAIN(KHz)

Cain 10 nF

Cain 22 nF

Cain 47 nF

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