MAX6884EVCMOD2 datasheet(5/12 Pages) MAXIM

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Evaluate: MAX6884/MAX6885

MAX6884 Evaluation System/

Evaluation Kit

Press the

Refresh button to read the current values from

the MAX6884. Press the

Apply button to send the soft-

ware values to the MAX6884.

Registers Tab

The

Registers tab (Figure 5) displays the MAX6884 vola-

tile working registers and their corresponding EEPROM

value. Pressing

Refresh reads and displays all register

and EEPROM values. Individual register bytes can be

modified by selecting the appropriate grid cell and typing

two hexadecimal digits 0–9/A–F.

At power-up, the MAX6884 automatically loads its regis-

ters from the configuration EEPROM page. To store the

active register values into the configuration EEPROM,

press

Commit to EEPROM. Prevent any software modi-

fications to the configuration registers and configuration

EEPROM by checking the

Lock Configuration check-

box. Reset the

Confirm Write checkbox to disable the

disk for later retrieval, using the

Load Reg Values from

File and Save Reg Values to File buttons.

EEPROM Tab

The

EEPROM tab (Figure 6) displays the nonvolatile

EEPROM memory contents of the MAX6884. Pressing

Refresh reads and displays the EEPROM contents on

the GUI. Individual memory bytes can be modified by

selecting the appropriate grid cell and typing two hexa-

decimal digits 0–9/A–F.

To disregard user EEPROM (0x40h to 0x7Fh) writes when

the UV/OV or RESET outputs are asserted, check

the

EEPROM Write Depends on UV/OV or EEPROM Write

Depends on RESET checkboxes. Refer to the MAX6884

data sheet for more details. Reset the

Confirm Write

checkbox to disable the EEPROM write confirmation.

EEPROM values can optionally be stored into a text file

on disk for later retrieval, using the

Load from File and

Save to File buttons.

Simple I2C Commands

There are two methods for communicating with the

MAX6884: through the normal user-interface panel or

through the I2C commands available by selecting the

2-Wire Interface Diagnostic item from the Options pull-

down menu. A window is displayed that allows I2C opera-

tions, such as Read Byte and Write Byte, to be executed.

To stop normal user-interface execution so that it does

not override the manually set values, turn off the update

timer by unchecking the

Automatic Status Read and

Automatic Diagnostics checkboxes.

Figure 4. MAX6884 EV Kit Software Watchdog Timer Tab

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