Rainbow-electronics LM95010 Uživatelský manuál

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LM95010
Digital Temperature Sensor with SensorPath
Bus in
MSOP8 Package
General Description
The LM95010 is a digital output temperature sensor that has
single-wire interface compatible with National Semiconduc-
tor’s SensorPath interface. It uses a V
be
analog tempera-
ture sensing technique that generates a differential voltage
that is proportional to temperature. This voltage is digitized
using a Sigma-Delta analog-to-digital converter. The
LM95010 is part of a hardware monitor system, comprised of
two parts: the PC System Health Controller (Master), such
as a Super I/O, and up to seven slaves of which four can be
LM95010s. Using SensorPath, the LM95010 will be con-
trolled by the master and report to the master its own die
temperature. SensorPath data is pulse width encoded,
thereby allowing the LM95010 to be easily connected to
many general purpose micro-controllers.
Features
n SensorPath Bus
— 4 hardware programmable addresses
n Temperature Sensing
— 0.25 ˚C resolution
— 127.75 ˚C maximum temperature reading
n 8-lead MSOP package
Key Specifications
n Temperature Sensor Accuracy
±
2 ˚C (max)
n Temperature Range −20 ˚C to +125 ˚C
n Power Supply Voltage +3.0V to +3.6V
n Power Supply Current 0.5 mA (typ)
n Conversion Time 14 ms to 1456 ms
Applications
n Microprocessor based equipment
— (Motherboards, Base-stations, Routers, ATMs, Point
of Sale, …)
n Power Supplies
Block Diagram
20082001
SensorPath
is a trademark of National Semiconductor Corporation.
November 2003
LM95010 Digital Temperature Sensor with SensorPath Bus in MSOP8 Package
© 2003 National Semiconductor Corporation DS200820 www.national.com
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Shrnutí obsahu

Strany 1 - MSOP8 Package

LM95010Digital Temperature Sensor with SensorPath™Bus inMSOP8 PackageGeneral DescriptionThe LM95010 is a digital output temperature sensor that hassin

Strany 2 - Ordering Information

1.0 Functional Description (Continued)1.3.2 Read TransactionDuring a read transaction, the master reads data from aregister at a specified address wit

Strany 3 - DC Electrical Characteristics

1.0 Functional Description (Continued)•Data Bits This is the data written to the LM95010 regis-ter, are driven by the master. Data is transferred seri

Strany 4 - AC Electrical Characteristics

1.0 Functional Description (Continued)1. A bus error event occurred, and2. the "physical" condition for an Attention Request is met(i.e., th

Strany 5 - 20082004

2.0 Register Set (Continued)* Depends on state of ADD pins see Table 1.2.2 Device Reset OperationA Device Reset operation is performed in the followin

Strany 6 - 20082005

2.0 Register Set (Continued)2.6 CAPABILITIES FIXED (Addr 03o)RegAddRegisterNameR/WPORValBit15MSbBit14Bit13Bit12Bit11Bit10Bit9Bit8Bit7Bit6Bit5Bit4Bit3B

Strany 7 - 20082006

2.0 Register Set (Continued)Bit Type Description1 R/W Shutdown (Shutdown Mode). When set to "1" this bit stops the operation of all function

Strany 8 - 1.0 Functional Description

2.0 Register Set (Continued)Bit Type Description2-0 R Resolution. This field defines the value of 1 LSb of the Temperature Readout field in the Readou

Strany 9

2.0 Register Set (Continued)2.9.4 Temperature Control (Addr 12o)This register is set to the reset value by a Device Reset.RegAddRegisterNameR/WPORValB

Strany 10 - 20082009

3.0 Applications Information3.1 MOUNTING CONSIDERATIONSThe LM95010 can be applied easily in the same way asother integrated-circuit temperature sensor

Strany 11 - 20082010

Physical Dimensions inches (millimeters)unless otherwise noted8-Lead Molded Mini Small Outline Package (MSOP),JEDEC Registration Number MO-187,Order N

Strany 12 - 2.0 Register Set

Connection Diagram20082002Ordering InformationOrderNumberPackageMarkingNSPackageNumberTransportMediaLM95010CIMM T19C MUA08A 1000 units intape and reel

Strany 13 - 2.0 Register Set (Continued)

Absolute Maximum Ratings(Notes 1, 2)Supply Voltage (V+) −0.5 V to 6.0 VVoltage on Pin 2 −0.3 V to (V+ + 0.3 V)Voltage on all other Pins −0.5 V to 6.0

Strany 14

SWD and ADD DIGITAL INPUT CHARACTERISTICSSymbol Parameter ConditionsTypical(Note 7)Limits(Note 8)Units(Limit)CINDigital Input Capacitance 10 pFSWD DIG

Strany 15

20082004FIGURE 2. Timing for Data Bits 0, 1 and Start Bit. See Section 1.2 "Bit Signaling" for further details.LM95010www.national.com5

Strany 16

20082005FIGURE 3. Timing for Attention Request and Reset. See Section 1.2 "Bit Signaling" for further details.LM95010www.national.com 6

Strany 17

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the devi

Strany 18 - 3.0 Applications Information

Typical Performance CharacteristicsConversion Rate Effect on Power Supply Current200820201.0 Functional DescriptionThe LM95010 is based on a ∆Vbetempe

Strany 19

1.0 Functional Description (Continued)drive by the master. Signals labels that begin with the labelSlv_ depict the drive by the LM95010. All other sig

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