PCF8591 データシートの表示（PDF） - NXP Semiconductors.
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PCF8591 Datasheet PDF : 28 Pages
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Philips Semiconductors
8-bit A/D and D/A converter
handbook, full pagewidth
msb
lsb
D7 D6 D5 D4 D3 D2 D1 D0 DAC data
register
VAOUT
VDD
VREF
VAOUT = VAGND +
VREF - VAGND
7
∑
Di × 2i
256
i=0
Product specification
PCF8591
MBL827
VAGND
VSS
00 01 02 03 04
HEX code
FE FF
Fig.7 DAC data and DC conversion characteristics.
handbook, full pagewidth
MBL828
PROTOCOL S
ADDRESS
0A
CONTROL BYTE
A
DATA BYTE 1
A
DATA BYTE 2
A
SCL
SDA
VAOUT
12
891
high impedance state or
previous value held in DAC register
91
91
previous value held in
DAC register
value of data byte 1
time
Fig.8 D/A conversion sequence.
2003 Jan 27
8
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