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TMP103FYFFR Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza TMP103FYFFR
Descripción Electrónicos  Low-Power, Digital Temperature Sensor with Two-Wire Interface in WCSP
Download  23 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TMP103FYFFR Datasheet(HTML) 6 Page - Texas Instruments

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I/O
Control
Interface
SCL
SDA
Temperature
Register
Configuration
Register
T
LOW
Register
T
HIGH
Register
Pointer
Register
TMP103
0.01mF
V+
GND
2
5
1
SCL
6
SDA
To
Two-Wire
Controller
TMP103
SBOS545A
– FEBRUARY 2011 – REVISED MARCH 2011
www.ti.com
APPLICATION INFORMATION
GENERAL DESCRIPTION
To maintain accuracy in applications that require air
or surface temperature measurement, care should be
The TMP103 is a digital output temperature sensor in
taken to isolate the package from ambient air
a wafer chip-scale package (WCSP) that is optimal
temperature.
for thermal management and thermal profiling. The
TMP103
includes
a
two-wire
interface
that
is
POINTER REGISTER
compatible with both I2C and SMBus interfaces. In
addition, the TMP103 has the capability of executing
Figure 7 shows the internal register structure of the
multiple device access (MDA) commands that allow
TMP103. The 8-bit Pointer Register of the device is
multiple TMP103s to respond to a single global bus
used to address a given data register. The Pointer
command. MDA commands reduce communication
Register uses the two LSBs to identify which of the
time and power in a bus that contains multiple
data registers should respond to a read or write
TMP103 devices. The TMP103 is specified over a
command. Table 1 identifies the bits of the Pointer
temperature range of
–40ºC to +125 ºC.
Register byte. During a write command, P2 through
P7 must always be '0'. Table 2 describes the pointer
The TMP103 serial interface is designed to support
address of the registers available in the TMP103.
up to eight TMP103 devices on a single bus. The
Power-up reset value of P1/P0 is '00'. By default, the
TMP103 is offered with eight internal interface
TMP103 reads the temperature on power-up.
addresses. Each unique address option can be used
as a location or temperature zone designator. The
TMP103 responds to standard I2C/SMBus slave
protocols that allow the internal registers to be written
to or read from on an individual basis. The TMP103
also responds to MDA commands that allow all the
devices on the bus to be written to or read from,
without having to send the individual address and
commands to each device.
Pull-up resistors are required on SCL and SDA. A
0.01
μF bypass capacitor is also recommended, as
shown in Figure 6.
Figure 7. Internal Register Structure
Table 1. Pointer Register Byte
P7
P6
P5
P4
P3
P2
P1
P0
0
0
0
0
0
0
Register Bits
Table 2. Pointer Addresses
NOTE: SCL and SDA pins require pull-up resistors.
P1
P0
REGISTER
Figure 6. Typical Connections
0
0
Temperature Register (Read Only)
0
1
Configuration Register (Read/Write)
The temperature sensor in the TMP103 is the chip
itself. Thermal paths run through the package bumps
1
0
TLOW Register (Read/Write)
as well as the package. The lower thermal resistance
1
1
THIGH Register (Read/Write)
of metal causes the bumps to provide the primary
thermal path.
6
Submit Documentation Feedback
Copyright
© 2011, Texas Instruments Incorporated
Product Folder Link(s): TMP103


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