M62255 Mitsubishi, M62255 Datasheet - Page 8

• Manufacturer Part Number: M62255
• Description: GENERAL PURPOSE BATTERY CHARGER CONTROL IC
• Manufacturer: Mitsubishi

BLOCK DESCRIPTION
(1) Battery Voltage Detect BLOCK
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 D
converter of MCU is improved by 2-Bit as against the difference of IN1-IN4 input.
Serial Data
from MCU
CK
CS
DI
Fig.1 Block Diagram of Multiplexer and Level Magnification Circuit
Reference
Voltage for
A-D Converter
Serial-Parallel
Converter
Circuit
0.31V
5.0V
to A-D input of MCU
(
D
8
OUT
/ 12 )
GENERAL PURPOSE BATTERY CHARGER CONTROL IC
1
3
OUT
1
1
terminal. The resolution of A-D
MITSUBISHI<Dig./Ana. INTERFACE>
x10
x10
M62255FP
IN1
IN2
IN3
IN4
I
I
I
I
SENSE2 -
SENSE2+
SENSE1 -
SENSE1+