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參數(shù)資料
| 型號(hào)： | x9255 |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Dual Two-wiper Digitally-Controlled (XDCP) Potentiometer(帶兩個(gè)滑動(dòng)端的雙路數(shù)控電位器(XDCP)) |
| 中文描述： | 雙程雙線雨刮器數(shù)字控制（數(shù)字電位器）電位器（帶兩個(gè)滑動(dòng)端的雙路數(shù)控電位器（數(shù)字電位器）） |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 119K |
| 代理商： | X9255 |
16 of 21
REV 1.6 7/16/03
www.xicor.com
X9455
Byte Write Operation
For any Byte Write operation, the X9455 requires the
Slave Address byte, an Address Byte, and a Data Byte
(See Figure 6). After each of them, the X9455
responds with an ACK. The master then terminates the
transfer by generating a STOP condition. At this time, if
the write operation is to a volatile register (WCR, or
SR), the X9455 is ready for the next read or write
operation. If the write operation is to a nonvolatile
register (DR), and the WP pin is high, the X9455 begins
the internal write cycle to the nonvolatile memory.
During the internal nonvolatile write cycle, the X9455
does not respond to any requests from the master. The
SDA output is at high impedance.
The SR bits and WP pin determine the register being
accessed through the 2-wire interface. See Table 1 on
page 11.
As noted before, any write operation to a Data Register
(DR), also writes to the corresponding WCR.
For example, to write 3Ahex to the Level 1 Data Regis-
ter of wiper 1A (DR1A1) the following sequence is
required:
During the sequence of this example, WP pin must be
high, and A0, A1, and A2 pins must be low. When com-
pleted, the DR1A1 register of Wiper 1A will be set to
3Ah, and also the WCR1A.
Figure 6. Byte Write Sequence
START
Slave Address
ACK
Address Byte
ACK
Data Byte
ACK
STOP
0101 0000
0000 0111
0000 0011
START
Slave Address
ACK
Address Byte
ACK
Data Byte
ACK
STOP
0101 0000
0000 0010
0011 1010
(Hardware Address = 000,
and a Write command)
(Indicates Status Register
address)
(Data Register Level 1 and
NVEnable selected)
(Hardware address = 000,
Write command)
(Access Wiper 1A)
(Write Data Byte 3Ah)
S
t
a
r
t
S
t
o
p
Slave
Address
Address
Byte
Data
Byte
A
C
K
Signals from
the Master
Signals from
the Slave
A
C
K
0
0
0
1
1
A
C
K
Write
Signal at SDA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| x9455 | Dual Two-wiper Digitally-Controlled Potentiometer(帶兩個(gè)滑動(dòng)端的雙路數(shù)控電位器) |
| X9268 | Dual Digitally-Controlled (XDCP) Potentiometers(低功耗,低噪聲,雙DCP,抽頭位置掉電自動(dòng)保存) |
| X9312(中文) | Nonvolatile Digital Potentiometer(非易失性數(shù)字電位器) |
| X9313(中文) | EEPOT Nonvolatile Digital Potentiometer(32個(gè)抽頭,-5V~+5V,非易失性數(shù)字電位器) |
| X9314(中文) | EEPOT Nonvolatile Digital Potentiometer(32個(gè)抽頭,-5V~+5V,對(duì)數(shù)電阻特性,非易失性數(shù)字電位器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9258 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Noise/Low Power/2-Wire Bus/256 Taps |
| X9258)06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Quad Digital Controlled Potentiometers |
| X9258_11 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Quad Digital Controlled Potentiometers(XDCP?) |
| X9258_13 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Noise/Low Power/2-Wire Bus/256 Taps |
| X9258TB24 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Quad Digital Controlled Potentiometers (XDCP) |
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