PD70F3559 datasheet(78/85 Pages) RENESAS

tên linh kiện	PD70F3559

Giải thích chi tiết về linh kiện	32-bit Single-Chip Microcontroller

PDF	85 Pages

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R01DS0142ED0100

Data Sheet

Chapter 10

Definition of terms

Chapter 10 Definition of terms

The following sections describe the meaning of several terms used in this

document.

10.1 How to Read A/D Converter Characteristics Table

This section describes the meanings of the terms peculiar to the A/D converter.

(1)

Resolution

The minimum analog input voltage that can be identified, i.e. the ratio of the

analog input voltage to 1 digital output is called 1 LSB (Least Significant Bit).

The ratio of 1 LSB to the full scale is expressed as %FSR (Full Scale Range).

%FSR is the ratio, in percentage, of the range in which an analog input voltage

can be converted, and is expressed as follows regardless of the resolution.

1%FSR = (Maximum value of analog input voltage that can be converted

−

Minimum value of analog input voltage that can be converted)/100

= (AVREFP − AVREFM)/100

1 LSB is as follows at a resolution of 10 bits:

1 LSB = 1/210

= 1/1,024

= 0.098%FSR

1 LSB is as follows at a resolution of 12 bits:

1 LSB = 1/212

= 1/4,096

= 0.024%FSR

The accuracy is determined by the total error, regardless of the resolution.

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