MAX6654EVKIT Maxim Integrated Products, MAX6654EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX6654EVKIT
• Description: EVAL KIT FOR MAX6654
• Manufacturer: Maxim Integrated Products

Specifications of MAX6654EVKIT

• Sensor Type: Temperature
• Sensing Range: -55°C ~ 125°C
• Interface: I²C, SMBus
• Sensitivity: ±1°C
• Voltage - Supply: 3 V ~ 5.5 V
• Embedded: No
• Utilized Ic / Part: MAX6654
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

single-shot command overrides the automatic conver-
sion. After the single shot is complete, the device
returns to automatic operation.
There are two methods for communicating with the
MAX6654: through the normal user-interface panel or
through the SMBus commands available from pressing
the MAXSMBUS button. A display pops up that allows
the SMBus protocols, 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 that slaves the pro-
gram to the conversion rate by unchecking the
Automatic Read checkbox.
The SMBus dialog boxes accept numeric data in bina-
ry, decimal, or hexadecimal. Hexadecimal numbers
should be prefixed by $ or 0x. Binary numbers must be
exactly eight digits. Note: In places where the slave
address asks for an 8-bit value, it must be the 7-bit
slave address of the MAX6654 as determined by ADD0
and ADD1 with the last bit always set to 1.
Check the Data Logging checkbox to activate data
logging. Data logging saves temperature and status
data to a text file that includes a time/date stamp next
to each data point. If Automatic Read is enabled, data
is sampled at 2Hz; however, the data is logged to the
file only if either the temperature or status change. This
slows the growth of the data-logging file. When
Automatic Read is disabled, the data is logged each
time the Read All button is clicked. To stop data log-
ging, uncheck the Data Logging checkbox.
Table 1. JU1 and JU2 Shunt Settings for
SMBus Address
JU1 (ADD0)
Open
Open
Open
2-3
2-3
2-3
1-2
1-2
1-2
SHUNT LOCATION
JU2 (ADD1)
_______________________________________________________________________________________
Open
Open
Open
Simple SMBus Commands
2-3
1-2
2-3
1-2
2-3
1-2
Data Logging
ADDRESS
MAX6654
0011 000
0011 001
0011 010
0101 001
0101 010
0101 011
1001 100
1001 101
1001 110
MAX6654 Evaluation System
Two jumpers set the MAX6654 slave address. The
default address is 1001 110 (ADD0 = ADD1 = V
JU1 corresponds to ADD0 and JU2 corresponds to
ADD1; see Table 1 for a complete list of addresses.
The MAX6654 must undergo a power-on reset for the
new address to become effective.
The +5V supply voltage for the MAX6654 comes from
the SMBus interface board. To evaluate the MAX6654
with a different voltage, cut the trace shorting the two
pins of JU4 and apply a voltage to the VCC pad. A
slide switch, SW1, is provided as a means to force a
power-on reset of the MAX6654. This switch disables
power to the device.
The MAX6654 includes a parasitic resistance cancella-
tion (PRC) mode. In PRC mode, the effect of series
resistance on the leads of the external diode is can-
celed. To test this feature, cut the trace shorting the two
pins of JU5 and solder a 100Ω resistor at the R1 loca-
tion on the board. Then check the Parasitic Cancel
checkbox on the main display.
The MAX6654 EV kit can be connected through a twist-
ed pair to a remote diode close to your system. Cut the
trace shorting the two pins of JU6 and solder the twist-
ed pair from your remote diode to the pads labeled
DXP and DXN.
Table 2. JU3 Shunt Settings for STBY
LOCATION
SHUNT
Open
1-2
2-3
Using a Remote-Diode Sensor
Jumper and Switch Settings
signal to STBY
Connected to
Connected to
Connect an
STBY PIN
external
GND
VCC
Evaluating PRC Mode
In standby mode
In operate mode
FUNCTION
CC
).
3