ST7FMC1M4T3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7FMC1M4T3

8-bit MCU with nested interrupts, Flash, 10-bit ADC, brushless motor control, five timers, SPI, LINSCI™

STMicroelectronics 

ST7MC1xx/ST7MC2xx

12.14 10-BIT ADC CHARACTERISTICS

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

Symbol

VAREF

fADC

VAIN

Ilkg

RAIN

CAIN

Parameter

Analog Reference Voltage

ADC clock frequency

Conversion voltage range 1)

Positive input leakage current for

analog input

Negative input leakage current on

analog pins

External input impedance

External capacitor on analog input

Conditions

VIN<VSS, | IIN |< 400µA on

adjacent analog pin

fAIN Variation freq. of analog input signal

CADC

tADC

RAREF

Internal sample and hold capacitor

Conversion time (Sample+Hold)

- Sample capacitor loading time

- Hold conversion time

Conversion time (Sample+Hold)

- Sample capacitor loading time

- Hold conversion time

Analog Reference Input Resistor

fCPU=8MHz, fADC=4MHz,

ADSTS bit in MCCBCR

register = 0

fCPU=8MHz, fADC=4MHz,

ADSTS bit in MCCBCR

register = 1

Min

3

VSSA

Typ

Max

Unit

VDD

V

4

MHz

VAREF

V

±1

μA

5

6

μA

see

kΩ

Figure

pF

157 and

Figure

158 2)3)4)

Hz

6

pF

3.5

μs

4

10

1/fADC

6.5

μs

16

10

1/fADC

11

kΩ

Figure 157. RAIN max. vs fADC with CAIN=0pF3)

45

40

35

2 MHz

30

1 MHz

25

20

15

10

5

0

0

10

30

70

CPARASITIC (pF)

Figure

158.

Recommended

CAIN

&

RAIN

4)

values.

1000

Cain 10 nF

100

Cain 22 nF

Cain 47 nF

10

1

0.1

0.01

0.1

1

10

fAIN(KHz)

281/309

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