參數(shù)資料
型號(hào)： X9279
廠商： Intersil Corporation
英文描述： Single Supply/Low Power/256-Tap/2-Wire Bus
中文描述： 單電源/低Power/256-Tap/2-Wire巴士
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 398K
代理商： X9279
X9279
Characteristics subject to change without notice.
4 of 24
REV 1.1.7 2/6/03
www.xicor.com
PIN DESCRIPTIONS
Bus Interface Pins
S
ERIAL
D
ATA
I
NPUT
/O
UTPUT
(SDA)
The SDA is a bidirectional serial data input/output pin
for a 2-Wire slave device and is used to transfer data
into and out of the device. It receives device address,
opcode, wiper register address and data sent from an
2-Wire master at the rising edge of the serial clock
SCL, and it shifts out data after each falling edge of the
serial clock SCL.
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.
S
ERIAL
C
LOCK
(SCL)
This input is used by 2-Wire master to supply 2-Wire
serial clock to the X9279.
D
EVICE
A
DDRESS
(A2 - A0)
The Address inputs are used to set the least significant
3 bits of the 8-bit slave address. A match in the slave
address serial data stream must be made with the
Address input in order to initiate communication with
the X9279. A maximum of 8 devices may occupy the 2-
Wire serial bus.
Potentiometer Pins
R
H
, R
L
The R
connections on a mechanical potentiometer.
H
and R
L
pins are equivalent to the terminal
R
W
The wiper pin is equivalent to the wiper terminal of a
mechanical potentiometer.
Bias Supply Pins
S
YSTEM
S
UPPLY
V
OLTAGE
(V
CC
)
AND
S
UPPLY
G
ROUND
(V
SS
pin
)
The V
is the system ground.
CC
pin is the system supply voltage. The V
SS
Other Pins
N
O
C
ONNECT
No connect pins should be left open. This pins are used
for Xicor manufacturing and testing purposes.
H
ARDWARE
W
RITE
P
ROTECT
I
NPUT
(WP)
The WP pin when LOW prevents nonvolatile writes to
the Data Registers.
相關(guān)PDF資料
PDF描述
X9279UV14Z-2.7 EDN12 DB9 EMI/RFI FF 250F
X9279UV14IZ-2.7 Single Supply/Low Power/256-Tap/2-Wire Bus
X9311TP Digital Potentiometer
X9311TPI Digital Potentiometer
X9311WPI Digital Potentiometer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
X9279_09 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Single Digitally-Controlled (XDCP?) Potentiometer
X9279TB 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Single Digitally-Controlled (XDCP) Potentiometer
X9279TB-2.7 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Single Digitally-Controlled (XDCP) Potentiometer
X9279TBI 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Single Digitally-Controlled (XDCP) Potentiometer
X9279TBI-2.7 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Single Digitally-Controlled (XDCP) Potentiometer
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