ISL23711 Datasheet, PDF (2/9 Pages) Intersil Corporation – Terminal Voltage +- 3V or +- 5V, 128 Taps IC Serial Interface

ISL23711
Block Diagram
7-BIT
V_CC GND
SDA
WIPER
SCL
REGISTER
127
(VOLATILE)
R_H
126
SDA
R_H
SCL
INTERFACE
AND
R_W
A1
CONTROL
A0
R_L
V-
SIMPLE BLOCK DIAGRAM
125
124
ONE
OF
128
DECODER
2
TRANSFER RESISTOR
GATES
ARRAY
RECALL
CONTROL
1
CIRCUITRY
0
A1
SLAVE
R_L
ADDRESS
A0
DECODE
R_W
DETAILED BLOCK DIAGRAM
Pin Descriptions
PIN NUMBER
1
SYMBOL
SDA
2
V-
3
GND
4
A1
5
A0
6
RH
7
RW
8
RL
9
V_CC
10
SCL
DESCRIPTION
Data I/O for I²C serial interface. It has an open drain output and may be wire ORed with other open
drain active low outputs.
Negative supply voltage for the potentiometer wiper control.
Ground. Should be connected to a digital ground
A1 and A0 are address select pins used to set the slave address for the I²C serial interface.
A1 and A0 are address select pins used to set the slave address for the I²C serial interface.
A fixed terminal for one end of the potentiometer resistor.
The wiper terminal which is equivalent to the movable terminal of a potentiometer.
A fixed terminal for one end of the potentiometer resistor.
Positive logic supply voltage.
Clock input for the I²C serial interface.
2
FN6127.0
August 16, 2005