LM95214EB/NOPB National Semiconductor, LM95214EB/NOPB Datasheet - Page 4

• 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

1.0 Introduction
The LM95213/14/33/34 Evaluation Board is
used together with the National Semiconductor
SensorEval software (provided in the kit), and
with a USB cable (not provided in the kit), and
with an external personal computer (PC). Power
to the LM95213/14/33/34 Evaluation Board is
provide by the +5 VDC line of the USB
connection. No external power supply or signal
sources are required for operation of the
LM95213/14/33/34 evaluation board.
Before connecting the PC to the
LM95213/14/33/34 evaluation board through the
USB cable, the PC is first turned on and allowed
to go through its boot-up procedure. The user
installs and initiates the SensorEval software.
See Section 4.0 for details.
After the SensorEval software is running, the
user can connect the USB cable first to the
computer and then to the LM95213/14/33/34
Evaluation Board.
The PC should be able to recognize the board
and the user simply selects the
LM95213/14/33/34 Eval Board radio button.
© Copyright 2005 National Semiconductor Corporation
4
The block diagram below describes the
LM95213/14/33/34 Evaluation Board itself. The
USB input provides the +5.0 VDC power to the
board, which is regulated down to 3.3 VDC to
power the IC’s. The EEPROM is programmed at
the factory with a unique ID code for this
particular board. When the USB cable is
plugged in, the PC interrogates the USB devices
and can identify this device as the
LM95213/14/33/34 Evaluation Board.
The microcontroller on the board provides the
serial SMBus clock (SMBCLK), provides the
SMBus data (SMBDAT) signal, and relays the
information from the LM95213/14/33/34 to the
PC via the USB lines.
The block in the lower right of the Block
Diagram shows the signals that are available to
probe by the user for either of the
LM95213/14/33/34 devices on the board.
www.national.com