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| 型号： | X9401YS24-2.7 |
| 厂商： | INTERSIL CORP |
| 元件分类： | 数字电位计 |
| 英文描述： | QUAD 2.5K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDSO24 |
| 封装： | PLASTIC, SOIC-24 |
| 文件页数： | 16/20页 |
| 文件大小： | 360K |
| 代理商： | X9401YS24-2.7 |
5
FN8190.1
March 31, 2005
Figure 2. Instruction Byte Format
The four high order bits of the instruction byte specify
the operation. 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 two
bits (P1 and P0) selects which one of the four potenti-
ometers is to be affected by the instruction.
Four of the ten instructions are two bytes in length and
end with the transmission of the instruction byte.
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 specified Data
Registers to the associated Wiper Counter Regis-
ters.
– Global XFR Wiper Counter Register to Data
Register—This transfers the contents of all Wiper
Counter Registers to the specified associated Data
Registers.
The basic sequence of the two byte instructions is illus-
trated
in
These
two-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 four potentiometers and one of its associated reg-
isters; or it may occur globally, where the transfer occurs
between all potentiometers and one associated regis-
ter.
Five instructions require a three-byte sequence to
complete. These instructions transfer data between
the host and the X9401; either between the host and
one of the data registers or directly between the host
and the Wiper Counter Register. These instructions
are:
– Read Wiper Counter Register— 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 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 sequence of these operations is shown in Figure 4
and Figure 5.
The final command is Increment/Decrement. It is dif-
ferent from the other commands, because it’s length is
indeterminate. Once the command is issued, the mas-
ter can clock the selected wiper up and/or down in one
resistor segment steps; thereby, providing a fine tuning
capability to the host. For each SCK clock pulse
(tHIGH) while SI is HIGH, the selected wiper will move
one resistor segment towards the VH/RH terminal.
Similarly, for each SCK clock pulse while SI is LOW,
the selected wiper will move one resistor segment
towards the VL/RL terminal. A detailed illustration of the
sequence and timing for this operation are shown in
I1
I2
I3
I0
R1
R0
P1
P0
Pot Select
Register
Select
Instructions
X9401
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相关代理商/技术参数 |
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| X9401YS24I-2.7 | 功能描述:IC XDCP QUAD 64-TAP 2.5K 24-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 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:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| X9401YV24I-2.7 | 功能描述:IC XDCP QUAD 64-TAP 2.5K 24TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 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:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| X9408 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Quad Digitally Controlled (XDCP?) Potentiometers |
| X9408_09 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Quad Digitally Controlled (XDCP?) Potentiometers |
| X9408-2.7 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low Noise/Low Power/2-Wire Bus |
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