M62255 Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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производитель

M62255

GENERAL PURPOSE BATTERY CHARGER CONTROL IC

MITSUBISHI ELECTRIC  

New Product TENTATIVE

MITSUBISHI<Dig./Ana. INTERFACE>

M62255FP

GENERAL PURPOSE BATTERY CHARGER CONTROL IC

BLOCK DESCRIPTION

(1) Battery Voltage Detect BLOCK

DI

Serial Data

from MCU

CK

CS

Serial-Parallel

Converter

Circuit

5.0V

Reference

Voltage for

A-D Converter

0.31V

1

1

x10

x10

3

1

ISENSE2 -

ISENSE2+

ISENSE1 -

ISENSE1+

IN1

IN2

IN3

IN4

DOUT

to A-D input of MCU

Fig.1 Block Diagram of Multiplexer and Level Magnification Circuit

Multiplexer and Level Magnification Circuit of M62255 consists from Reference Voltage, 4times amplifier,

10times Amplifier and 4input Multiplexer.

When setting the reference voltage correspond to detecting voltage by serial data from MCU, this set

voltage supply to reference voltage for A-D converter. The difference between input voltage of IN1 - IN4

and reference voltage is multiplied by 4 at the center of this setting voltage.

This multiplied voltage is supplied to A-D input of MCU from DOUT terminal. The resolution of A-D

converter of MCU is improved by 2-Bit as against the difference of IN1-IN4 input.

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