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MAX5432 Evaluation Kit
When the Recall button is pressed, the data present in
the nonvolatile memory is transferred to the volatile memo-
ry and the wiper position is updated. When either Store or
Recall button is pressed, the EV kit software Data Sent
indicator shows the last known data that is being
transferred. These commands do not send any data to the
device because the commands transferred data already
contained in the volatile or nonvolatile memory.
Factory Default
Status Indicator
The Status indicator in the Interface group box dis-
plays EV Kit Operational when the MAX5432 EV kit
enters the normal operating mode after the USB con-
nection is detected and the device address is found.
When USB connection is not detected or device is not
found, or when the software enters the demo mode, the
Status indicator displays Device not found .
I 2 C Bus Speed Indicator
Pressing the Factory Default button resets the wiper
The
I 2 C
Bus Speed indicator in the Interface group
position in the MAX5432 volatile and nonvolatile memo-
ry to the factory-default position. The factory-default
wiper position is the midscale position.
Device Address
The Interface group box contains a Device Address
combo box that stores up to four device addresses found
by the MAX5432 EV kit software. The MAX5432 EV kit
software automatically searches for the MAX5432 during
startup using the four possible addresses shown in Table
4. Each of the four unique device addresses found by the
software will be stored in the Device Address combo
box. Use the Device Address combo box to select
between different devices that share the same bus. If no
device is found, the Device Address is set to Auto
Detect . Select the Auto Detect option from the Device
Address combo box to search for new additional device
addresses. A maximum of four MAX5432/MAX5433
devices can share the same I 2 C bus.
Table 1. MAX5432 I 2 C Command
box displays the I 2 C bus speed. The I 2 C bus speed is
set to 400kbps by the MAX5432 EV kit software.
Command Sent Indicator
The Command Sent indicator in the Interface group
box displays the last command sent from the master
(software) to the MAX5432. There are four commands
available in the MAX5432 IC, as described in Table 1.
Data Sent Indicator
The Data Sent indicator in the Interface group box dis-
plays the last data sent from the master (software) to
the MAX5432. The MAX5432 IC uses the first 5 bits
(MSBs, D7–D3) of the data byte to set the wiper posi-
tion. The last 3 bits (D2, D1, and D0) are “Don’t Care’s.”
Refer to the MAX5432/MAX5433 IC data sheet for addi-
tional information.
MAX5432 REGISTER
COMMAND
BINARY HEX
DESCRIPTION
EV KIT SOFTWARE CONTROL
VREG
NVREG
00010001
00100001
0x11
0x21
I 2 C data is written to VREG
Wiper position updates with I 2 C data
No change to NVREG
I 2 C data is written to NVREG
No change to wiper position
No change to VREG
H-W Volatile
L-W Volatile
H-W Nonvolatile
L-W Nonvolatile
Copy VREG to NVREG
VREGxNVREG
01010001
0x51
No change to wiper position
Store
No change to VREG
Copy NVREG to VREG
NVREGxVREG
01100001
0x61
Wiper position updates with NVREG
Recall
No change to NVREG
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相关代理商/技术参数
MAX5432LETA 制造商:Maxim Integrated Products 功能描述:32-TAP NONVOLATILE I2C LINEAR D - Rail/Tube
MAX5432LETA+ 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 50KOHM SGL 8TDFN EP - Rail/Tube
MAX5432LETA+T 功能描述:数字电位计 IC 32-Tap Nonvolatile I2C Linear 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
MAX5432LETA-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
MAX5432META 制造商:Maxim Integrated Products 功能描述:32-TAP NONVOLATILE I2C LINEAR D - Rail/Tube
MAX5432META+ 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 50KOHM SGL 8TDFN EP - Rail/Tube
MAX5432META+T 功能描述:数字电位计 IC 32-Tap Nonvolatile I2C Linear 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
MAX5432META-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