LM95214EB/NOPB National Semiconductor, LM95214EB/NOPB Datasheet - Page 9

• Manufacturer Part Number: LM95214EB/NOPB
• Description: BOARD EVALUATION FOR LM95214
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM95214EB/NOPB

• Sensor Type: Temperature
• Sensing Range: -40°C ~ 140°C
• Interface: SMBus (2-Wire/I²C)
• Sensitivity: ±1°C
• Voltage - Supply: 3 V ~ 3.6 V
• Embedded: No
• Utilized Ic / Part: LM95214
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM95214EB

3.0 Functional Description
The LM95213/14/33/34 Evaluation Board, along
with the SensorEval Software, provides the system
designer with a convenient way to learn about the
operation of the LM95213/14/33/34 Temperature
Sensor chip. The user simply has to install the
SensorEval software on his PC, run it, connect the
USB cable from the PC to the Evaluation Board, and
the user can read the temperatures. It’s that simple!
The user doesn’t have to provide any power or
external signals to the evaluation board.
Power to the LM95213/14/33/34 Evaluation Board is
taken from the USB 5-Volt line. This +5 VDC is the
input to the on-board LM2950 low dropout voltage
3.1 LM95213/14/33/34 Evaluation Board Connection Table
© Copyright 2005 National Semiconductor Corporation
signals to any of the pins
signals to any of the pins
user with signals for test
purposes only. (may not
Output header provides
Connector Label
temperature diodes
external power or
on these headers!
external power or
on these headers!
Do not apply any
Do not apply any
Connection to
USB Power
be stuffed)
J1
J2
J4
J5
Number
11, 12
9, 10
N/A
Pin
1, 3
2, 4
3, 4
5, 6
7, 8
1
2
3
4
1
2
USB Cable Input. Connect the USB cable to this jack after
the SensorEval software has been loaded on the PC.
SMBCLK. Clock signal for SMBus.
SMBDAT. Data signal for the SMBus.
GND. System ground.
V
regulator to the LM95213/14/33/34 V
connect an external power supply to this pin!
Short to connect 3.3V regulator output to LM95213/14/33/35
Power pin
GND connection
Pin 1 of DUT (NC)
GND
+3.3V_DC
Short for D4+ connection to board MMBT 3904 (not
available for the LM95213/LM95233)
Short for D4- connection to board MMBT 3904 (not
available for the LM95213/LM95233)
Short for D3+ connection to board MMBT 3904 (not
available for the LM95213/LM95233)
Short for D3- connection to board MMBT 3904 (not available
for the LM95213/LM95233)
DD
. The +3.3 VDC voltage supplied by the on-board voltage
9
regulator, which regulates the output voltage to +3.3
VDC. This output voltage powers the
LM95213/14/33/34, the on-board microcontroller,
and the EEPROM chip where the board ID
information is stored.
The microcontroller provides the SMBus Clock
(SMBCLK) signal and the SMBus Data (SMBDAT)
signal to the LM95213/14/33/34 chip. This
communication between the LM95213/14/33/34 and
the PC USB data lines is controlled by the
microcontroller. For all of the details of this
communication protocol see the latest
LM95213/14/33/34 datasheet, available at
www.national.com.
Description
DD
input pin.
Do not
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