MB89P677APFM View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB89P677APFM

8-bit Proprietary Microcontroller

Fujitsu 

MB89670/A Series

(1) A/D Converter Glossary

• Resolution

Analog changes that are identifiable with the A/D converter.

• Linearity error

The deviation of the straight line connecting the zero transition point (“00 0000 0000” ↔ “00 0000 0001”) with

the full-scale transition point (“11 1111 1111” ↔ “11 1111 1110”) from actual conversion characteristics

• Differential linearity error

The deviation of input voltage needed to change the output code by 1 LSB from the theoretical value

• Total error

The difference between theoretical and actual conversion values, caused by the zero transition error, full-scale

transition error, linearity error, quantization error, and noise.

Theoreticall I/O characteristics

3FF

VFST

3FE

3FD

1.5 LSB

004

003

VOT

002

1 LSB

001

0.5 LSB

AVSS

Analog input

AVR

VFST – VOT

1 LSB =

(V)

1022

Total error

3FF

3FE

Actual conversion

value

3FD

{1 LSB × N + 0.5 LSB}

004

003

002

001

AVSS

VNT

Actual conversion

value

Theoretical value

AVR

Analog input

VNT – {1 LSB × N + 0.5 LSB}

Total error of digital output N

1 LSB

(Continued)

45

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