MAX5432EVKIT+ Maxim Integrated Products, MAX5432EVKIT+ Datasheet - Page 5

• Manufacturer Part Number: MAX5432EVKIT+
• Description: KIT EVAL FOR MAX5432
• Manufacturer: Maxim Integrated Products

Specifications of MAX5432EVKIT+

• Main Purpose: Digital Potentiometer
• Utilized Ic / Part: MAX5432
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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.
Pressing the Factory Default button resets the wiper
position in the MAX5432 volatile and nonvolatile memo-
ry to the factory-default position. The factory-default
wiper position is the midscale position.
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
Table 1. MAX5432 I
MAX5432 REGISTER
VREGxNVREG
NVREGxVREG
NVREG
VREG
_______________________________________________________________________________________
00010001
00100001
01010001
01100001
BINARY
2
C Command
2
COMMAND
C bus.
Device Address
Factory Default
0x11
0x21
0x51
0x61
HEX
Wiper position updates with I
Wiper position updates with NVREG
I
No change to wiper position
No change to wiper position
2
I
C data is written to NVREG
2
C data is written to VREG
Copy VREG to NVREG
Copy NVREG to VREG
No change to NVREG
No change to NVREG
No change to VREG
No change to VREG
MAX5432 Evaluation Kit
DESCRIPTION
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.
The I
box displays the I
set to 400kbps by the MAX5432 EV kit software.
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.
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.
2
C Bus Speed indicator in the Interface group
2
C data
2
C bus speed. The I
Command Sent Indicator
EV KIT SOFTWARE CONTROL
I
2
C Bus Speed Indicator
Data Sent Indicator
H-W Nonvolatile
L-W Nonvolatile
H-W Volatile
L-W Volatile
Status Indicator
Recall
Store
2
C bus speed is
5