参数资料
| 型号： | X9261UV24I-2.7T1 |
| 厂商： | Intersil |
| 文件页数： | 18/20页 |
| 文件大小： | 0K |
| 描述： | IC XDCP DUAL 256TAP 50K 24-TSSOP |
| 标准包装： | 2,500 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 2 |
| 温度系数： | 标准值 ±300 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 6 线 SPI（芯片选择，设备位址） |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 带卷 (TR) |
7
FN8171.4
October 12, 2006
Register Selection
DEVICE DESCRIPTION
Instructions
Four of the ten instructions are three bytes in length.
These instructions are:
– Read Wiper Counter Register – read the current
wiper position of the selected potentiometer,
– Write Wiper Counter Register – change current
wiper position of the selected potentiometer,
– Read Data Register – read the contents of the
selected Data Register;
– Write Data Register – write a new value to the
selected Data Register.
– Read Status - This command returns the contents
of the WIP bit which indicates if the internal write
cycle is in progress.
The basic sequence of the three byte instructions is
illustrated in Figure 3. These three-byte instructions
exchange data between the WCR and one of the Data
Registers. A transfer from a Data Register to a WCR is
essentially a write to a static RAM, with the static RAM
controlling the wiper position. The response of the
wiper to this action will be delayed by tWRL. A transfer
from the WCR (current wiper position), to a Data
Register is a write to nonvolatile memory and takes a
minimum of tWR to complete. The transfer can occur
between one of the two potentiometers and one of its
associated registers; or it may occur globally, where
the transfer occurs between all potentiometers and
one associated register. The Read Status Register
instruction is the only unique format (See Figure 5).
Four instructions require a two-byte sequence to
complete. These instructions transfer data between
the host and the X9261; either between the host and
one of the data registers or directly between the host
and the Wiper Counter Register. These instructions
are:
– XFR Data Register to Wiper Counter Register –
This transfers the contents of one specified Data
Register to the associated Wiper Counter Register.
– XFR Wiper Counter Register to Data Register –
This transfers the contents of the specified Wiper
Counter Register to the specified associated Data
Register.
– Global XFR Data Register to Wiper Counter
Register – This transfers the contents of all speci-
fied Data Registers to the associated Wiper Counter
Registers.
– Global XFR Wiper Counter Register to Data
Register – This transfers the contents of all Wiper
Counter Registers to the specified associated Data
Registers.
INCREMENT/DECREMENT COMMAND
The final command is Increment/Decrement (See
Figures 6 and 7). The Increment/Decrement command
is different from the other commands. Once the
command is issued and the X9261 has responded
with an acknowledge, the master can clock the
selected wiper up and/or down in one segment steps;
thereby, providing a fine tuning capability to the host.
For each SCL clock pulse (tHIGH) while SI is HIGH,
the selected wiper will move one resistor segment
towards the RH terminal. Similarly, for each SCL clock
pulse while SI is LOW, the selected wiper will move
one resistor segment towards the RL terminal. A
detailed illustration of the sequence and timing for this
operation are shown. See Instruction format for more
details.
Register Selected
RB
RA
DR0
0
DR1
0
1
DR2
1
0
DR3
1
X9261
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X9261UV24IZ | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Single Supply/Low Power/256-Tap/SPI Bus |
| X9261UV24IZ-2.7 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Single Supply/Low Power/256-Tap/SPI Bus |
| X9261UV24T1 | 功能描述:IC XDCP DUAL 256TAP 50K 24-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 标准包装:2,500 系列:XDCP™ 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 ±300 ppm/°C 存储器类型:非易失 接口:I²C（设备位址） 电源电压:2.7 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) |
| X9261UV24Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Dual Digitally-Controlled Potentiometers |
| X9261UV24Z-2.7 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Single Supply/Low Power/256-Tap/SPI Bus |
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