X9455 Datasheet, PDF (2/18 Pages) Intersil Corporation – Dual Two-wiper Digitally-Controlled (XDCP) Potentiometer

Functional Diagram
X9455
A2
A1
A0
SDA
SCL
DS0
DS1
CS
U/D
V_CC
2-wire
Interface
Up/Down
Interface
POWERUP,
INTERFACE
CONTROL AND
STATUS
V_SS
R_H0
R_H1
WCR0A WCR0B
DR0A0 DR0B0
DR0A1 DR0B1
DR0A2 DR0B2
DR0A3 DR0B3
DCP0
WCR1A WCR1B
DR1A0 DR1B0
DR1A1 DR1B1
DR1A2 DR1B2
DR1A3 DR1B3
DCP1
WP
R_W0A R_W0B R_L0
R_W1A R_W1B R_L1
Pin Descriptions
TSSOP PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SYMBOL
DS0
A0
RW0B
NC
NC
U/D
VCC
RL0
RH0
RW0A
A2
WP
SDA
A1
NC
NC
RW1B
VSS
CS
RW1A
RH1
RL1
SCL
DS1
BRIEF DESCRIPTION
Wiper Selection input for Up/Down interface
Device Address for 2-wire interface
Second Wiper Terminal of DCP0
No Connect
No Connect
Increment/Decrement for Up/Down interface
System Supply Voltage
Low Terminal of DCP0
High Terminal of DCP0
First Wiper Terminal of the DCP0
Device Address for 2-wire interface
Hardware Write Protect (Active low)
Serial Data Input/Output for 2-wire interface
Device Address for 2-wire interface
No Connect
No Connect
Second Wiper Terminal of DCP1
System Ground
Chip select for Up/Down interface
First Wiper Terminal of DCP1
High Terminal of DCP1
Low Terminal of DCP1
Serial Clock for 2-wire interface
Wiper selection input for Up/Down interface
2
FN8202.0
November 10, 2004