ST7PMC2N6B6(2004) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7PMC2N6B6
(Rev.:2004)

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

STMicroelectronics 

ST7MC1/ST7MC2

Figure

152.

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)

Figure 153. Typical Application with ADC

VDD

VAIN

VDD

RAIN

AINx

CAIN

0.1µF

VAREF

VSSA

RAREF

VT

0.6V

VT

0.6V

2kΩ(max)

10-Bit A/D

Conversion

IL

±1µA

CADC

6pF

ST7MC

Notes:

1. When VSSA pins are not available on the pinout, the ADC refer to VSS.

2. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10kΩ). Data

based on characterization results, not tested in production.

3. CPARASITIC represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad ca-

pacitance (3pF). A high CPARASITIC value will downgrade conversion accuracy. To remedy this, fADC should be reduced.

4. This graph shows that depending on the input signal variation (fAIN), CAIN can be increased for stabilization time and

decreased to allow the use of a larger serial resistor (RAIN).

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