- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376449 > X95840WV20IZ-2.7 (INTERSIL CORP) Quad Digital Controlled Potentiometers PDF資料下載
參數(shù)資料
| 型號： | X95840WV20IZ-2.7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Quad Digital Controlled Potentiometers |
| 中文描述： | QUAD 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大?。?/td> | 1145K |
| 代理商： | X95840WV20IZ-2.7 |
9
FN8213.1
September 27, 2005
Principles of Operation
The X95840 in as integrated circuit incorporating four DCPs
with their associated registers, non-volatile memory, and a 2-
wire serial interface providing direct communication between
a host and the potentiometers and memory.
DCP Description
Each DCP is implemented with a combination of resistor
elements and CMOS switches. The physical ends of each
DCP are equivalent to the fixed terminals of a mechanical
potentiometer (RH and RL pins). The RW pin of each DCP is
connected to intermediate nodes, and is equivalent to the
wiper terminal of a mechanical potentiometer. The position
of the wiper terminal within the DCP is controlled by an 8-bit
volatile Wiper Register (WR). Each DCP has its own WR.
When the WR of a DCP contains all zeroes (WR<7:0>: 00h),
its wiper terminal (RW) is closest to its “Low” terminal (RL).
When the WR of a DCP contains all ones (WR<7:0>: FFh),
its wiper terminal (RW) is closest to its “High” terminal (RH).
As the value of the WR increases from all zeroes (00h) to all
ones (255 decimal), the wiper moves monotonically from the
position closest to RL to the closest to RH. At the same time,
the resistance between RW and RL increases monotonically,
while the resistance between RH and RW decreases
monotonically.
While the X95840 is being powered up, all four WRs are
reset to 80h (128 decimal), which locates RW roughly at the
center between RL and RH. Soon after the power supply
voltage becomes large enough for reliable non-volatile
memory reading, the X95840 reads the value stored on four
different non-volatile Initial Value Registers (IVRs) and loads
them into their corresponding WRs.
The WRs and IVRs can be read or written directly using the
2-wire serial interface as described in the following sections.
Memory Description
The X95840 contains eight non-volatile bytes. they are
accessed by 2-wire interface operations with Address Bytes
0 through 7 decimal. The first four non-volatile bytes at
addresses 0, 1, 2, and 3, contain the initial value loaded at
power-up into the volatile Wiper Registers (WRs) of DCP0,
DCP1, DCP2, and DCP3 respectively. Bytes at addresses 4,
5, and 6 are available to the user as general purpose
registers. The byte at address 7 is reserved; the user should
not write to it, and its value should be ignored if read.
The volatile WR, and the non-volatile Initial Value Register
(IVR) of a DCP are accessed with the same Address Byte.
A volatile byte at address 8 decimal, controls what byte is
read or written when accessing DCP registers: the WR, the
IVR, or both.
When the byte at address 8 is all zeroes, which is the default
at power up:
A read operation to addresses 0, 1, 2 or 3 outputs the
value of the non-volatile IVRs.
A write operation to addresses 0, 1, 2, or 3 writes the
same value to the WR and IVR of the corresponding DCP.
When the byte at address 8 is 80h (128 decimal):
A read operation to addresses 0, 1, 2, or 3 outputs the
value of the volatile WR.
A write operation to addresses 0, 1, 2, or 3 only writes to
the corresponding volatile WR.
It is not possible to write to an IVR without writing the same
value to its corresponding WR.
00h and 80h are the only values that should be written to
address 8. All other values are reserved and must not be
written to address 8.
To access the general purpose bytes at addresses 4, 5, or 6,
the value at address 8 must be all zeros.
FIGURE 13. MIDSCALE GLITCH, CODE 80h TO 7Fh (WIPER 0)
FIGURE 14. LARGE SIGNAL SETTLING TIME
Typical Performance Curves
(Continued)
Wiper Movement Mid Point
From 80h to 7fh
Signal at Wiper (Wiper Unloaded)
SCL
Signal at Wiper
(Wiper Unloaded Movement
From ffh to 00h)
X95840
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X95840UV20IZ-2.7 | Quad Digital Controlled Potentiometers |
| X96010 | Sensor Conditioner with Dual Look Up Table Memory and DACs(傳感器調(diào)節(jié)器，帶雙查找表存儲器及DACs) |
| X96010V14I | Sensor Conditioner with Dual Look Up Table Memory and DACs |
| X96010V14IZ | Hook-Up Wire; Conductor Size AWG:24; No. Strands x Strand Size:19 x 36; Jacket Color:Purple; Approval Bodies:UL; Approval Categories:UL AWM Style 1180; Passes VW-1 Flame Test; Cable/Wire MIL SPEC:MIL-W-16878/5 Type EE RoHS Compliant: Yes |
| X96011 | Temperature Sensor with Look Up Table Memory and DAC(溫度傳感器，帶雙查找表存儲器及DAC) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X95RP-2 | 功能描述:消費電池與相機電池 D 18900mAh 2 PK Titanium Alkaline RoHS:否 制造商:FDK Batteries 電池大小:CR1/3N 輸出電壓:3 V 容量:160 mAh 化學性質(zhì):Lithium 端接類型:Pressure Contacts 可再充電/不可再充電:Non-Rechargeable |
| X95RP-4 | 功能描述:消費電池與相機電池 NOT AVAILABLE THROUGH MOUSER RoHS:否 制造商:FDK Batteries 電池大小:CR1/3N 輸出電壓:3 V 容量:160 mAh 化學性質(zhì):Lithium 端接類型:Pressure Contacts 可再充電/不可再充電:Non-Rechargeable |
| X96010 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Sensor Conditioner with Dual Look Up Table Memory and DACs |
| X96010V14I | 功能描述:CONDITIONER SGNL DUAL MEM & DAC RoHS:否 類別:集成電路 (IC) >> 接口 - 傳感器和探測器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:20-TSSOP 包裝:管件 |
| X96010V14IZ | 功能描述:板上安裝溫度傳感器 SENSOR CONDITIONER W/DL LOOP UP TABLE RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
發(fā)布緊急采購，3分鐘左右您將得到回復。