ADT75 Analog Devices, Inc., ADT75 Datasheet - Page 13

• Manufacturer Part Number: ADT75
• Description: ?1?c Accurate, 12-bit Digital Temperature Sensor
• Manufacturer: Analog Devices, Inc.

REGISTERS
The ADT75 contains six registers: four are data registers, one is
the address pointer register, and the final register is the one-shot
register. The configuration register is the only data register that
is 8 bits wide while the rest are 16 bits wide. The temperature
value register is the only data register that is read only. Both a
read and write can be performed on the rest of the data registers
and on the one-shot register. On power-up, the address pointer
register is loaded with 0x00 and points to the temperature value
register.
Table 7. ADT75 Registers
Pointer Address
0x00
0x01
0x02
0x03
0x04
Name
Temperature value
Configuration
T
T
One-shot
HYST
OS
setpoint
setpoint
Power-On Default
0x00
0x00
0x4B00 (75°C)
0x5000 (80°C)
0xXX
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Address Pointer Register
This 8-bit write only register stores an address that points to one
of the four data registers and selects the one-shot mode. P0 and
P1 select the data register to which subsequent data bytes are
written to or read from. P0, P1, and P2 are used to select the
one-shot mode by writing 04h to this register. A zero should be
written to the rest of the bits.
Table 8. Address Pointer Register
Default Settings at
Power-Up
Table 9. Register Addresses
P2
0
0
0
0
1
P1
0
0
1
1
0
P0
0
1
0
1
0
P7
0
P6
0
Register Selected
Temperature value
Configuration
T
T
One-shot mode
HYST
OS
setpoint
setpoint
P5
0
P4
0
P3
0
P2
0
ADT75
P1
0
P0
0