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參數(shù)資料
| 型號： | x9455 |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Dual Two-wiper Digitally-Controlled Potentiometer(帶兩個滑動端的雙路數(shù)控電位器) |
| 中文描述： | 雙程雙線雨刮器數(shù)字控制電位器（帶兩個滑動端的雙路數(shù)控電位器） |
| 文件頁數(shù)： | 17/21頁 |
| 文件大?。?/td> | 119K |
| 代理商： | X9455 |
17 of 21
REV 1.6 7/16/03
www.xicor.com
X9455
Page Write Operation
As stated previously, the memory is organized as a
single Status Register (SR), and four pages of four
registers each. Each page contains one Data Register
for each wiper. Normally a page write operation will be
used to efficiently update all four Data Registers and
WCR in a single Write command. Note the special
sequence for writing to a page: First wiper 0A, then 1B,
then 1A, then 0B as shown in figure 7.
Figure 7. Page Write Sequence*
*Page writes may wrap around to the first address on a page
from the last address.
In order to perform a Page Write operation to the mem-
ory array, the NVEnable bit in the SR must first be set
to “1”.
A Page Write operation is initiated in the same manner
as the Byte Write operation; but instead of terminating
the write cycle after the first data byte is transferred,
the master can transmit up to 4 bytes (See Figure 8).
After the receipt of each byte, the X9455 responds with
an ACK, and the internal WCR address is incremented
by one. The page address remains constant. When the
address reaches the end of the page, it “rolls over” and
goes back to the first byte of the same page.
For example, if the master writes three bytes to a page
starting at location DR1A2, the first two bytes are
written to locations DR1A2 and DR0B2, while the last
byte is written to location DR0A2. Afterwards, the WCR
address would point to location DR1B2. If the master
supplies more than four bytes of data, then new data
overwrites the previous data, one byte at a time.
The master terminates the loading of Data Bytes by
issuing a STOP condition, which initiates the
nonvolatile write cycle. As with the Byte Write
operation, all inputs are disabled until completion of the
internal write cycle. If the WP pin is high, the
nonvolatile write cycle doesn’t start and the bytes are
discarded.
Notice that the Data Bytes are also written to the WCR
of the corresponding WCRs, therefore in the above
example, WCR1A, WCR0B, and WCR0A are also
written.
Figure 8. Page Write Operation
WCR
WCR0A
→
WCR1B
→
WCR1A
→
WCR0B
DR Level 0 DR0A0
→
DR1B0
→
DR1A0
→
DR0B0
DR Level 1 DR0A1
→
DR1B1
→
DR1A1
→
DR0B1
DR Level 2 DR0A2
→
DR1B2
→
DR1A2
→
DR0B2
DR Level 3 DR0A3
→
DR1B3
→
DR1A3
→
DR0B3
2 < n < 4
Signals from
the Master
Signals from
the Slave
Signal at SDA
S
t
a
r
t
Slave
Address
Address
Byte
A
C
K
A
C
K
0
0
0
1
1
Data Byte (1)
S
t
o
p
A
C
K
A
C
K
Data Byte (n)
Write
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PDF描述 |
|---|---|
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| X9312(中文) | Nonvolatile Digital Potentiometer(非易失性數(shù)字電位器) |
| X9313(中文) | EEPOT Nonvolatile Digital Potentiometer(32個抽頭,-5V~+5V,非易失性數(shù)字電位器) |
| X9314(中文) | EEPOT Nonvolatile Digital Potentiometer(32個抽頭,-5V~+5V,對數(shù)電阻特性,非易失性數(shù)字電位器) |
| x93154(中文) | Low Noise, Low Power, 32 Taps Digitally Controlled Potentiometer(低噪音，低電壓，32個抽頭,數(shù)字電位器) |
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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