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參數(shù)資料
| 型號(hào)： | x9455 |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Dual Two-wiper Digitally-Controlled Potentiometer(帶兩個(gè)滑動(dòng)端的雙路數(shù)控電位器) |
| 中文描述： | 雙程雙線雨刮器數(shù)字控制電位器（帶兩個(gè)滑動(dòng)端的雙路數(shù)控電位器） |
| 文件頁數(shù)： | 15/21頁 |
| 文件大?。?/td> | 119K |
| 代理商： | X9455 |
15 of 21
REV 1.6 7/16/03
www.xicor.com
X9455
Table 2. Register Numbering
The registers are organized in pages of four, with one
page consisting of the four volatile WCRs, a second
page consisting of the Level 0 Data Registers, and so
forth. These pages can be written four bytes at at time.
In this manner all four potentiometer WCRs can be
updated in a single serial write (see Page Write Opera-
tion), as well as all four registers of a given page in the
DR array.
The unique feature of the X9455 device is that writing
or reading to a Data Register of a given wiper automat-
ically updates the WCR of that wiper with the new
value. In this manner data can be moved from a partic-
ular wiper register to that wiper’s WCR just by perform-
ing a 2-wire read operation. Simultaneously, that data
byte can be utilized by the host.
Status Register Organization
The Status Register (SR) is used in read and write
operations to select the appropriate wiper register.
Before any wiper register can be accessed, the SR
must be set to the correct value. It is accessed by
setting the Address Byte to 07h (Write to slave
address, then to address 07h). The SR is volatile and
defaults to 00h on power up. It is an 8-bit register
containing three control bits in the 3 LSBs as follows:
Bits WCRSel0 and WCRSel1 determine which Data
Register of a wiper is selected in a given operation.
NVEnable is used to select the volatile WCR if “0”, and
one of the non volatile wiper registers if “1”. Table 3
shows this register organization.
Table 3. Status Register Contents for WCR and DR
Selection for 2-Wire Interface
Note:
X means either 0 or 1, nn = 0A, 0B, 1A, or 1B
Wiper Addressing for 2-wire Interface
Once the Data Register Level has been selected by a
2-wire instruction, then the wiper is determined by the
Address Byte of the following instruction. Note again
that this enables a complete page write of all four
potentiometers at once a particular Wiper Register has
been chosen. The register addresses accessible in the
X9455 include:
Table 4. Addressing for 2-wire Interface Address
Byte
All other address bits in the address byte must be set
to “0” during 2-wire write operations and their value
should be ignored when read.
DCP0
DCP1
Wiper Reg.
Level 0
Level 1
Level 2
Level 3
WCR0A
DR0A0
DR0A1
DR0A2
DR0A3
WCR0B
DR0B0
DR0B1
DR0B2
DR0B3
WCR1A
DR1A0
DR1A1
DR1A2
DR1A3
WCR1B
DR1B0
DR1B1
DR1B2
DR1B3
7
6
Reserved
5
4
3
2
1
0
WCRSel1
WCRSel0 NVEnable
Register
Selected
WCRnn
DRnn0
DRnn1
DRnn2
DRnn3
WCRSel1
X
0
0
1
1
WCRSel0
X
0
1
0
1
NVEnable
0
1
1
1
1
Address (hex)
0
1
2
3
4
5
6
7
Contents
Wiper 0A
Wiper 1B
Wiper 1A
Wiper 0B
Not Used
Not Used
Not Used
Status Register
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9455_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual Two-wiper Digitally-Controlled Potentiometer |
| X9455TV24-2.7 | 功能描述:IC DCP DUAL 100K 256TAP 24-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲(chǔ)器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9455TV24I-2.7 | 功能描述:IC DCP DUAL 100K 256TAP 24-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲(chǔ)器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9455TV24IZ-2.7 | 功能描述:IC XDCP DUAL 256TAP 100K 24TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:32 電阻（歐姆）:50k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 50 ppm/°C 存儲(chǔ)器類型:易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 供應(yīng)商設(shè)備封裝:TSOT-23-6 包裝:帶卷 (TR) |
| X9455US24I-2.7 | 功能描述:IC XDCP DUAL 256TAP 50K 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:32 電阻（歐姆）:50k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 50 ppm/°C 存儲(chǔ)器類型:易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 供應(yīng)商設(shè)備封裝:TSOT-23-6 包裝:帶卷 (TR) |
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