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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)： | 11/21頁 |
| 文件大小： | 119K |
| 代理商： | X9455 |
11 of 21
REV 1.6 7/16/03
www.xicor.com
X9455
UP/DOWN INTERFACE OPERATION
The SCL, U/D, CS, DS0 and DS1 inputs control the
movement of the wiper along the resistor array. With
CS set LOW the device is selected and enabled to
respond to the U/D and SCL inputs. HIGH to LOW
transitions on SCL will increment or decrement
(depending on the state of the U/D input) a wiper
counter register selected by DS0 and DS1. The output
of this counter is decoded to select one of 256 wiper
positions along the resistor array.
The value of the counter is stored in nonvolatile data
register Level 0 of the corresponding WCR whenever
CS transitions HIGH while the SCL and WP inputs are
HIGH (See Table 1). During a “Store” operation bits
WCRSel1 and WCRSel0 in the status register must be
both “0”, which is their power up default value. Other
combinations are reserved and must not be used.
The system may select the X9455, move a wiper, and
deselect the device without having to store the latest
wiper position in nonvolatile memory. After the wiper
movement is performed as described above and once
the new position is reached, the system must keep
SCL LOW while taking CS HIGH. The new wiper pos-
tion is maintained until changed by the system or until
a power-down/up cycle recalled the previously stored
data.
This procedure allows the system to always power-up
to a preset value stored in nonvolatile memory; then
during system operation minor adjustments could be
made. The adjustments might be based on user prefer-
ence, system parameter changes due to temperaure
drift, etc.
The state of U/D may be changed while CS remains
LOW. This allows the host system to enable the device
and then move the wiper up and down until the proper
trim is attained. The 2-wire interface is disabled while
CS remains LOW.
Table 1. DCP Selection for Up/Down Control
MODE SELECTION FOR UP/DOWN CONTROL
*While in Standby, the 2-wire interface is enabled
DS1
0
1
1
0
DS0
0
1
0
1
Selected Wiper
Control Register
Wiper A of DCP0
Wiper B of DCP0
Wiper A of DCP1
Wiper B of DCP1
CS
L
SCL
U/D
H
Mode
Wiper Up
L
L
Wiper Down
H
X
Store Wiper Position to non-
volatile memory if WP pin is
high. No store, return to stand-
by, if WP pin is low.
Standby*
H
X
X
L
X
No Store, Return to Standby
L
H
Wiper Up (not recommended)
L
L
Wiper Down
(not recommended)
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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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