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參數(shù)資料
| 型號： | X9408 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Quad 2-Wire EEPOT Nonvolatile Digital Potentiometer(4個EEPOT,IIC接口,直接寫入/讀出滑動端位置,低噪聲,非易失性數(shù)字電位器) |
| 中文描述： | 四2線EEPOT非易失數(shù)字電位器（4個EEPOT，國際進口接口，直接寫入/讀出滑動端位置，低噪聲，非易失性數(shù)字電位器） |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 140K |
| 代理商： | X9408 |
X9408
4
Acknowledge Polling
The disabling of the inputs, during the internal non-
volatile write operation, can be used to take advantage of
the typical 5ms E
PROM write cycle time. Once the stop
condition is issued to indicate the end of the nonvolatile
write command the X9408 initiates the internal write
cycle. ACK polling can be initiated immediately. This
involves issuing the start condition followed by the device
slave address. If the X9408 is still busy with the write
operation no ACK will be returned. If the X9408 has
completed the write operation an ACK will be returned
and the master can then proceed with the next operation.
2
Flow 1. ACK Polling Sequence
Instruction Structure
The next byte sent to the X9408 contains the instruction
and register pointer information. The four most significant
bits are the instruction. The next four bits point to one of
the two pots and when applicable they point to one of
four associated registers. The format is shown below in
Figure 2.
Figure 2. Instruction Byte Format
The four high order bits define the instruction. The next
two bits (R1 and R0) select one of the four registers that
is to be acted upon when a register oriented instruction is
issued. The last bits (P1, P0) select which one of the four
potentiometers is to be affected by the instruction.
Four of the nine instructions end with the transmission of
the instruction byte. The basic sequence is illustrated in
Figure 3. These two-byte instructions exchange data
between the Wiper Counter Register and one of the data
registers. A transfer from a data register to a Wiper
Counter Register is essentially a write to a static RAM.
The response of the wiper to this action will be delayed
t
WRL
. A transfer from the Wiper Counter Register
(current wiper position), to a data register is a write to
nonvolatile memory and takes a minimum of t
complete. The transfer can occur between one of the four
potentiometers and one of its associated registers; or it
may occur globally, wherein the transfer occurs between
all of the potentiometers and one of their associated
registers.
WR
to
Four instructions require a three-byte sequence to
complete. These instructions transfer data between the
host and the X9408; either between the host and one of
the data registers or directly between the host and the
Wiper Control Latch. These instructions are: Read Wiper
Control Latch (read the current wiper position of the
selected pot), Write Wiper Counter Register (change
current wiper position of the selected pot), Read Data
Register (read the contents of the selected nonvolatile
register) and Write Data Register (write a new value to
the selected data register). The sequence of operations
is shown in Figure 4.
NONVOLATILE WRITE
COMMAND COMPLETED
ENTER ACK POLLING
ISSUE
START
ISSUE SLAVE
ADDRESS
ACK
RETURNED
FURTHER
OPERATION
ISSUE
INSTRUCTION
PROCEED
ISSUE STOP
NO
YES
YES
PROCEED
ISSUE STOP
NO
I1
I2
I3
I0
R1
R0
P1
P0
WIPER COUNTER
REGISTER SELECT
REGISTER
SELECT
INSTRUCTIONS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9408_09 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Quad Digitally Controlled (XDCP?) Potentiometers |
| X9408-2.7 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Noise/Low Power/2-Wire Bus |
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| X9408WP24-2.7 | 功能描述:IC XDCP QUAD 64-TAP 10K 24-DIP 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 細型，TSOT-23-6 供應(yīng)商設(shè)備封裝:TSOT-23-6 包裝:帶卷 (TR) |
| X9408WP24I | 功能描述:IC XDCP QUAD 64-TAP 10K 24-DIP 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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