pcf8591 NXP Semiconductors, pcf8591 Datasheet - Page 8

• Manufacturer Part Number: pcf8591
• Description: 8-bit A/d And D/a Converter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2003 Jan 27
handbook, full pagewidth
handbook, full pagewidth
8-bit A/D and D/A converter
PROTOCOL
V AOUT
SDA
SCL
S
V AOUT
1
V AGND
ADDRESS
V REF
V SS
V DD
2
previous value held in DAC register
msb
high impedance state or
D7
00
Fig.7 DAC data and DC conversion characteristics.
0
D6
8
01
V AOUT = V AGND
A
D5
9
02
Fig.8 D/A conversion sequence.
D4
1
CONTROL BYTE
03
D3
04
D2
V REF - V AGND
8
D1
256
A
D0
9
lsb
HEX code
i = 0
DAC data
register
7
1
Di
DATA BYTE 1
previous value held in
2 i
DAC register
FE
FF
A
9
MBL827
1
DATA BYTE 2
value of data byte 1
Product specification
PCF8591
MBL828
A
time