M62254 Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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производитель

M62254

Standard Battery Charger Controller

MITSUBISHI ELECTRIC  

Table5: Sub SW

D0

SW

0

OFF

1

ON

Table6: Amp. select

D1

D0

State

0

0 Select Amp1 output

0

1 Select Amp2 input

1

0 Select Amp2 output

* Amp1 output is selected at RESET

Table7: A-D input select

D1

D0

State

0

0

Select input 1

0

1

Select input 2

1

0

Select input 3

1

1

Select input 4

* Input 1 is selected at RESET

Mitsubishi Semiconductor < DIGI•ANA Interface >

M62254FP

Standard Battery Charger Controller

Table8: A-D Reference voltage select

D3 D2 D1 D0

00

00

00

01

00

10

00

11

01

00

01

01

01

10

01

11

10

00

10

01

10

10

10

11

11

00

* 0.4V is selected at RESET

State

Select 0V

Select 0.4V

Select 0.8V

Select 1.2V

Select 1.6V

Select 2.0V

Select 2.4V

Select 2.8V

Select 3.2V

Select 3.6V

Select 4.0V

Select 4.4V

Select 4.8V

Note: All outputs will be OFF at RESET

«Function block descriptions»

(1) A-D converter input

4.8V

Voltage regulator

reference voltage

0.4V

+

-

+3

-

REF

1

*

*Connect few 1000pF capacitor to stabilize the reference voltage

Select the desire reference voltage to be detected by serial data from the MCU.

The input voltage level of IN1~IN4 will be magnified 4 times using selected

reference voltage as a center. This magnified data will be return to the A-D

input port of the MCU. As result, accuracy of the A-D converter of the MCU will

be increased by 2 bit.

(2) +5V voltage regulator

Q1

IDD

+5V

Vcc

VB

VDD

since it is capable of driving external PNP Tr. base

up to 20mA, it can supply current of IDD MAX =

20mA x Q1hFE.

Also, since this is low I/O type power source, it can

operate VCC MIN = VCC – VDD = 0.1V.

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