M62398 查看數據表（PDF） - MITSUBISHI ELECTRIC
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M62398 Datasheet PDF : 7 Pages
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MITSUBISHI <Dig./Ana. INTERFACE>
M62398P,FP
8BIT 12CH I2C BUS D–A CONVERTER WITH BUFFER AMPLIFIERS
I 2C- BUS FORMAT
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 D3 D2 D1
Last
LSB
D0
•SUB ADDRESS
First
XXX
Last
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
Last
LSB
D7 D6 D5 D4 D3 D2 D1 D0
DAC output
0 0 0 0 0 0 0 0 (VrefU-VrefL)/256 x 1 x 2.4 + VrefL
0 0 0 0 0 0 0 1 (VrefU-VrefL)/256 x 2 x 2.4 + VrefL
0 0 0 0 0 0 1 0 (VrefU-VrefL)/256 x 3 x 2.4 + VrefL
0 0 0 0 0 0 1 1 (VrefU-VrefL)/256 x 4 x 2.4 + VrefL
1 1 1 1 1 1 1 0 (VrefU-VrefL)/256 x 255 x 2.4 + VrefL
1 1 1 1 1 1 1 1 (VrefU-VrefL) x 2.4 + VrefL
MITSUBISHI ELECTRIC
1997-5-28D.rev ( 5 / 7)
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