参数资料
| 型号： | MAX5474EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/11页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR MAX5474 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 数字电位器 |
| 已用 IC / 零件： | MAX5474 |
| 已供物品： | 板 |
MAX5474 Evaluation Kit
Detailed Description of Software
The MAX5474 EV kit software graphical user interface
(GUI) is a Windows program that provides a convenient
means to control the MAX5474, as shown in Figure 1.
Text in bold denotes user-selectable features in the
MAX5474 EV kit software. A mouse or the keyboard’s
TAB key is used to navigate various items on the main
window. The bottom left-side status bar of the main win-
dow provides the USB interface circuit communication
status. The bottom right-side status bar indicates the
presence or absence of the MAX5474 IC and opera-
tional status.
Software Startup
Upon starting the program, the MAX5474 EV kit soft-
ware automatically detects for the USB and interface
circuit connection. The MAX5474 EV kit enters normal
operating mode when the USB connection is detected.
The software Wiper Position and Wiper Input are ini-
tialized to midscale position at startup. Software initial-
ization sets the volatile register of the MAX5474 IC to
midscale. The NV memory remains unchanged. If the
USB connection is not detected, the software prompts
the user to retry, exit the program, or enter the demo
mode.
Demo Mode
The MAX5474 EV kit software can enter the demo
mode, when the USB connection is not detected, by
pressing the Cancel button in the MAX5474 Evaluation
Kit Interface Circuit Popup Window (Figure 2). The soft-
ware can also enter the demo mode at any time using
the Options | Demo Mode pulldown menu item in the
software main window. When in demo mode, all soft-
ware communication to the EV kit circuit is disabled;
however, most of the software GUI is functional. Demo
mode allows the user to evaluate the software without
hardware connectivity. To exit demo mode, select
Options | Demo Mode again from the pulldown menu.
Note: When reentering normal operating mode from the
demo mode, the MAX5474 wiper position must be
reset. Reset the wiper by pressing the Reset button.
See the Nonvolatile Memory section for more details.
Figure 2. MAX5474 Evaluation Kit Interface Circuit Popup Window
Wiper Position
Moving the Wiper Position track bar will update and
display the MAX5474 wiper position. Pressing the
Store button stores the MAX5474 wiper to the non-
volatile memory. Pressing the Reset button synchro-
nizes the software and wiper position by returning the
MAX5474 wiper to the midscale position.
The Wiper Input combo box accepts and displays a
number between 1 and 32 for the wiper input. The
Wiper Input also features a drop-down menu that
stores the last four user entries. After pressing the
Store button, the Wiper Stored edit box displays the
MAX5474 IC’s stored wiper position, and is read only.
Up and Down
Pressing the Up button increments the wiper one tap
position, while pressing the Down button decrements
the wiper one tap position. These buttons also move
the Wiper Position track bar to the respective position.
Nonvolatile Memory
The MAX5474 wiper position is stored in nonvolatile
memory when the Store button is pressed. The
MAX5474 wiper returns to this position upon power-up.
To demonstrate the nonvolatile memory feature in soft-
ware operation, press the Store button to store the
wiper position to the nonvolatile memory. Power cycle
the EV kit by removing the shunt from jumper JU1 and
reinstalling the shunt after 5s or longer (to allow dis-
charge of bypass capacitors). Do not restart the soft-
ware. Use an ohmmeter to verify the resistance
between the L and W PCB pads.
Perform a Reset to synchronize the software and
MAX5474 IC wiper position. Pressing the Reset button
does not overwrite the MAX5474 nonvolatile memory.
Factory Default
Pressing the Factory Default button resets the wiper
position in the MAX5474 volatile and nonvolatile memo-
ry to the factory-default position. The factory-default
wiper position in the volatile and nonvolatile memory is
at midscale.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5474EVKIT+ | 功能描述:其他开发工具 MAX5474 Eval Kit RoHS:否 制造商:Parallax 产品:ELEV-8 Hex Upgrade Kits 类型:Robotics 工具用于评估:ELEV-8 Quadcopter 工作电源电压: |
| MAX5475EKA | 制造商:Maxim Integrated Products 功能描述:32-TAP NON-VOLATILE LINEAR-TAPER - Rail/Tube |
| MAX5475EKA+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 100KOHM SGL 8PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:32-TAP NON-VOLATILE LINEAR-TAPER |
| MAX5475EKA+T | 功能描述:数字电位计 IC 32-Tap Nonvolatile Linear-Taper RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5475EKA-T | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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