ST7MC2N6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7MC2N6

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

STMicroelectronics 

ST7MC1xx/ST7MC2xx

10-BIT ADC CHARACTERISTICS (Cont’d)

Figure 159. 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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