X9258 Xicor, X9258 Datasheet - Page 2

• Manufacturer Part Number: X9258
• Description: Quad Digital Controlled Potentiometers (XDCP)
• Manufacturer: Xicor

PIN DESCRIPTIONS
Host Interface Pins
S
The SCL input is used to clock data into and out of the
X9258.
S
SDA is a bidirectional pin used to transfer data into
and out of the device. It is an open drain output and
may be wire-ORed with any number of open drain or
open collector outputs. An open drain output requires
the use of a pull-up resistor. For selecting typical
values, refer to the guidelines for calculating typical
values on the bus pull-up resistors graph.
D
The Address inputs are used to set the least
significant 4 bits of the 8-bit slave address. A match in
the slave address serial data stream must be made
with
communication with the X9258. A maximum of 16
devices may occupy the 2-wire serial bus.
Potentiometer Pins
V
The V
terminal connections on either end of a mechanical
potentiometer.
V
The wiper outputs are equivalent to the wiper output of
a mechanical potentiometer.
Hardware Write Protect Input (WP)
The WP pin when low prevents nonvolatile writes to
the Data Registers.
Analog Supplies V+, V-
The Analog Supplies V+, V- are the supply voltages
for the DCP analog section.
X9258
REV 1.1.7 2/4/03
ERIAL
ERIAL
H
W
EVICE
/R
/R
H
W
H
C
D
A
the
(V
/R
(V
LOCK
ATA
DDRESS
H0
H
W0
/R
(SDA)
address
and V
(SCL)
/R
H0
(A
W0
–V
0
–V
– A
L
H3
/R
W3
3
/R
L
)
input
/R
H3
inputs are equivalent to the
W3
), V
)
L
in
/R
L
(V
order
L0
/R
L0
to
–V
L3
initiate
www.xicor.com
/R
L3
)
PIN CONFIGURATION
A
B
C
D
E
F
V
V
V
V
W3
V
V
W0
H3
H0
L3
L0
/R
/R
/R
/R
/R
/R
V
R
V
R
WP
R
NC
R
1
V+
A0
W3
V+
CC
W0
A2
CC
W3
H3
H0
L3
L0
W0
L0
L3
Characteristics subject to change without notice.
Top View–Bumps Down
10
11
12
1
2
3
4
5
6
7
8
9
SOIC/TSSOP
R
R
WP
A
NC
A
2
H0
H3
2
X9258
0
CSP
24
23
22
21
20
19
18
17
16
15
14
13
SCL
SDA
R
R
A
A
3
H1
H2
1
3
A3
SCL
V
V
V
V–
V
V
V
V
A1
SDA
L2
H2
W2
SS
W1
H1
L1
R
R
V
R
/R
/R
R
/R
/R
V-
/R
/R
W1
SS
4
L1
W2
L2
L2
L1
H2
H1
W2
W1
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