MAX31725(2012) データシートの表示（PDF） - Maxim Integrated
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MAX31725 Datasheet PDF : 15 Pages
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MAX31725
±0.5°C Local Temperature Sensor
crossing above TOS and is then reset, it is asserted again
only when the temperature drops below THYST. The
output then remains asserted until it is reset by a read.
It is then asserted again if the temperature rises above
TOS, and so on. Putting the MAX31725 into shutdown
mode also resets OS.
I2C-Compatible Bus Interface
A standard I2C-compatible 2-wire serial interface reads
temperature data from the temperature registers and
reads and writes control bits and alarm threshold data to
and from the alarm and configuration registers.
The MAX31725 responds to its own I2C slave address,
which is selected using the A0, A1, and A2 pins. A0 and
A1 can be connected to the supply voltage, ground,
SDA, or SCL. A2 can be connected to supply voltage or
ground to provide up to 32 unique addresses.
Table 1 shows how the A0, A1, and A2 connections
determine the slave address.
Table 1. Slave Address Selection
SLAVE
A2
A1
A0
ADDRESS
CONNECTION CONNECTION CONNECTION BYTE
(hex)
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
GND
GND
GND
GND
VDD
VDD
VDD
VDD
SCL
SCL
SCL
SCL
SDA
SDA
SDA
SDA
GND
GND
GND
GND
VDD
VDD
VDD
VDD
SCL
SCL
SCL
SCL
SDA
SDA
SDA
SDA
GND
90h
VDD
92h
SCL
82h
SDA
80h
GND
94h
VDD
96h
SCL
86h
SDA
84h
GND
B4h
VDD
B6h
SCL
A6h
SDA
A4h
GND
B0h
VDD
B2h
SCL
A2h
SDA
A0h
GND
98h
VDD
9Ah
SCL
8Ah
SDA
88h
GND
9Ch
VDD
9Eh
SCL
8Eh
SDA
8Ch
GND
BCh
VDD
BEh
SCL
AEh
SDA
ACh
GND
B8h
VDD
BAh
SCL
AAh
SDA
A8h
Maxim Integrated
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