stcn75 STMicroelectronics, stcn75 Datasheet - Page 15

• Manufacturer Part Number: stcn75
• Description: Digital Temperature Sensor And Thermal Watchdog
• Manufacturer: STMicroelectronics

3
3.1
3.1.1
Functional description
The STCN75 registers have unique pointer designations which are defined in
page
user must “point” to the device register to be accessed.
All of these user-accessible registers can be accessed via the digital serial interface at
anytime
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Registers and register set formats
Command/pointer register
The Most Significant Bits (MSBs) of the Command register must always be zero. Writing a
'1' into any of these bits will cause the current operation to be terminated (Bit 2 through Bit 7
must be kept '0', see
Table 4.
The Command register retains pointer information between operations (see
Therefore, this register only needs to be updated once for consecutive READ operations
from the same register. All bits in the Command register default to '0' at power-up.
MSB
Bit7
Command register/Address Pointer register
Configuration register
Temperature register
Over-Limit Signal Temperature register (T
Hysteresis Temperature register (T
0
16. Whenever any READ/WRITE operation to the STCN75 register is desired, the
(seeSection 3.3: Serial interface on page
Command/pointer register format
Bit6
0
Table
These bits must be ‘O’
Bit5
4).
0
Bit4
0
HYS
)
OS
)
Bit3
19), and they include:
0
Bit2
0
Bit1
P1
Pointer/register
select bits
Table
Table 5 on
5).
Bit0
LSB
P0
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