pcf8591 NXP Semiconductors, pcf8591 Datasheet - Page 4

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

Philips Semiconductors
5
6
2003 Jan 27
handbook, full pagewidth
AINO
AIN1
AIN2
AIN3
A0
A1
A2
V
SDA
SCL
OSC
EXT
AGND
V
AOUT
V
SS
REF
DD
8-bit A/D and D/A converter
SYMBOL
BLOCK DIAGRAM
PINNING
PIN
10
11
12
13
14
15
16
AOUT
1
2
3
4
5
6
7
8
9
AIN0
AIN1
AIN2
AIN3
OSC
V DD
SDA
V SS
SCL
EXT
A0
A1
A2
negative supply voltage
I
I
oscillator input/output
external/internal switch for
oscillator input
analog ground
voltage reference input
analog output (D/A converter)
positive supply voltage
analog inputs (A/D converter)
hardware address
2
2
C-bus data input/output
C-bus clock input
MULTIPLEXER
POWER ON
INTERFACE
ANALOGUE
I
RESET
2
C BUS
DESCRIPTION
OSCILLATOR
SAMPLE
SAMPLE
PCF8591
HOLD
HOLD
AND
AND
Fig.1 Block diagram.
4
COMPARATOR
handbook, halfpage
REGISTER
CONTROL
STATUS
LOGIC
Fig.2 Pinning diagram (DIP16).
REGISTER
DAC DATA
AIN0
AIN1
AIN2
AIN3
V SS
A0
A1
A2
REGISTER/LOGIC
APPROXIMATION
SUCCESSIVE
1
2
3
4
5
6
7
8
PCF8591P
DAC
REGISTER
ADC DATA
MBL822
MBL821
16
15
14
13
12
11
10
9
Product specification
V DD
AOUT
V REF
AGND
EXT
OSC
SCL
SDA
PCF8591
V REF
AGND