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PDF M62392FP Data sheet ( Hoja de datos )

Número de pieza M62392FP
Descripción 8-BIT 12CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
Fabricantes Mitsubishi 
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MITSUBISHI <Dig./Ana. INTERFACE>
M62392P,FP
8-BIT 12CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
GENERAL DESCRIPTION
The M62392P,FP is a CMOS 12-channel D-A converter
with output buffer amplifiers.
It can communicate with a microcontroller via few wiring
thanks to the adoption of the two-line I2C BUS.
The output buffer amplifier employs AB class output with
sinking and sourcing capability of more than 1.0mA , and
an output voltage range is nearly between ground and
VrefU.
Maximum 8 ICs can be connected to a bus by using three
chip-select pins, so that it is possible to handle up to 96
channels.
FEATURES
I2C-bus serial data method
Wide output voltage range
Nearly between ground and VrefU (0~5V)
High output current drive capability
over ±1.0mA
2 setting voltage ranges by dual input pins
for upper voltage references (VrefU1,U2)
PIN CONFIGURATION (TOP VIEW)
R1
SCL 2
SDA 3
Ao7 4
Ao8 5
Ao9 6
Ao10 7
Ao11 8
Ao12 9
VrefL 10
VrefU1 11
GND 12
24 CS0
23 CS1
22 CS2
21 VDD
20 VCC
19 Ao6
18 Ao5
17 Ao4
16 Ao3
15 Ao2
14 Ao1
13 VrefU2
Outline 24P4D(P)
24P2N-B(FP)
APPLICATION
Conversion from digital data to analog control data for both consumer and industrial equipment.
Gain control and automatic adjustment of DISPLAY-MONITOR or CTV.
BLOCK DIAGRAM
CS0 CS1 CS2 VDD Vcc Ao6
24 23 22
21 20
19
Ao5
18
Ao4
17
Ao3
16
Ao2
15
Ao1
14
VrefU2 GND
13 12
CHIP SELECT
8bit upper
8bit upper
8bit upper
8bit upper
8bit upper
8bit upper
segment R-2R segment R-2R segment R-2R segment R-2R segment R-2R segment R-2R
8bit Latch
8bit Latch
8bit Latch
8bit Latch
8bit Latch
8bit Latch
8
8bit Latch
8bit Latch
8bit Latch
8bit Latch
8bit Latch
8bit Latch
8bit upper
8bit upper
8bit upper
8bit upper
8bit upper
8bit upper
segment R-2R segment R-2R segment R-2R segment R-2R segment R-2R segment R-2R
1
23
4
5
6
7
8
9 10 11
R
SCL SDA Ao7
Ao8
Ao9
Ao10
Ao11
Ao12 VrefL VrefU1
MITSUBISHI ELECTRIC
1997-5-27C.rev ( 1 / 7 )

1 page




M62392FP pdf
I2C BUS FORMAT
MITSUBISHI <Dig./Ana. INTERFACE>
M62392P,FP
8-BIT 12CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
STA SLAVE ADDRESS W A SUB ADDRESS A DAC DATA A STP
DIGITAL DATA FORMAT
•SLAVE ADDRESS
First
Last
1 0 0 1 A2 A1 A0
(SLAVE ADDRESS)
CHIP SELECT DATA
•DAC DATA
First
MSB
D7 D6 D5
D4
Last
LSB
D3 D2 D1 D0
•SUB ADDRESS
First
Last
X X X X S3 S2 S1 S0
Don't care
CHANNEL SELECT DATA
(1)CHIP SELECT DATA
MSB
LSB
A2 A1 A0 CS2 CS1 CS0
000 000
001 001
010 010
111 111
Lower 3bits(A0,A1,A2) are a programmable address. This
IC is accessed only when the lower 3 bits data of slave
address coincide with the data of CS0 to CS2.(refer to the
upper table)
(2)CHANNEL SELECT DATA
MSB
LSB
S3 S2 S1 S0
Channel selection
00 00
Don't care.
00 01
00 10
ch1 selection
ch2 selection
10 11
11 00
11 01
ch11 selection
ch12 selection
Don't care.
11 11
Don't care.
(3)DAC DATA
First
MSB
D7 D6 D5
000
000
000
000
D4
0
0
0
0
Last
LSB
D3 D2 D1 D0
0000
0001
0010
0 011
DAC output
(VrefU-VrefL)/256 x 1+VrefL
(VrefU-VrefL)/256 x 2+VrefL
(VrefU-VrefL)/256 x 3+VrefL
(VrefU-VrefL)/256 x 4+VrefL
11 11
1111
1 1 1 0 (VrefU-VrefL)/256 x 255+VrefL
1111
VrefU
MITSUBISHI ELECTRIC
1997-5-27C.rev ( 5 / 7 )

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