Datasheet

1-Wire Commands Tab

The 1-Wire Commands tab sheet (Figure 3) contains

buttons for all the 1-Wire commands and displays the

data in HEX format. All the ROM command buttons first

issue a reset and detect a presence before sending their

command. The device can also be reset using the Reset

Device option in the Device menu. The Search ROM

(F0h) button searches for all the ROM codes on the bus

and places them in the ROM Codes Found drop-down

list. This same search can be performed using the Search

for ROMs option in the Device menu. When a ROM

code is selected from the drop-down list, the ROM Code

table is automatically populated with this selection. The

Match ROM (55h) button matches the ROM selected in

the drop-down list. The Read ROM (33h) button reads

the ROM on the 1-Wire bus and displays it in the ROM

Code table. The Skip ROM (CCh) sends the skip ROM

command. The Read ROM (33h) and Skip ROM (CCh)

buttons should be used if only one device is on the bus.

The MAX31850/51 Commands should only be pressed

after a ROM command is complete. To perform a tem-

perature conversion, press the Convert T (44h) button.

If the device is configured in parasite power mode (00h),

then the Enable Strong Pull Up checkbox should be

checked before the Convert T (44h) button is pressed.

The Read Scratchpad (BEh) button reads the scratch-

pad and displays the 9 bytes in the Scratchpad table.

The Read Power Supply (B4h) button reads the power-

supply mode and displays the byte in the Power Supply

Mode edit field.

Figure 3. MAX31850/MAX31851 EV Kit GUI (1-Wire Commands Tab)

Evaluates:

MAX31850/MAX31851

MAX31850/MAX31851 Evaluation Kit

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Maxim Integrated

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