stcn75 STMicroelectronics, stcn75 Datasheet - Page 16

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

3.1.2
16/35
Table 5.
Configuration register
The Configuration register is used to store the device settings such as Device Operation
mode, OS/INT Operation mode, OS/INT Polarity, and OS/INT Fault Queue.
The Configuration register allows the user to program various options such as thermostat
fault tolerance, thermostat polarity, Thermostat Operating mode, and Shutdown mode. The
user has READ/WRITE access to all of the bits in the Configuration register except the MSB
(Bit7), which is reserved as a “Read only” bit (see
thus powers-up in its default state only.
Table 6.
1. Indicates Operation mode; 0 = comparator mode, and 1 = Interrupt mode (see
2. The OS is active-low ('0').
value (H)
STCN75
Pointer
Default
Byte
mode
00
01
02
03
Keys: SD = shutdown control bit
and
M = thermostat mode
POL = output polarity
FT0 = Fault tolerance0 bit
P1
Section 2.4: Interrupt
0
0
1
1
Register pointers selection summary
Configuration register format
MSB
Bit7
0
0
P0 Name Description
0
1
0
1
TEMP
T
CON
T
HYS
F
OS
Bit6
0
0
Temperature
register
Configuration
register
Hysteresis
register
Over-
temperature
shutdown
mode).
(2)
(1)
Bit5
0
0
Width
(bits)
16
16
16
Bit4
FT1
8
0
Read-
Table
(R/W)
Type
R/W
R/W
R/W
only
FT1 = fault tolerance1 bit
Bit 5 = must be set to '0'.
Bit 6 = must be set to '0'.
Bit 7 = must be set to '0'.
Bit3
FT0
0
6). The entire register is volatile and
Power-on
default
4B00
5000
N/A
00
POL
Bit2
0
Section 2.3: Comparator
To store measured
temperature data
Default = 75°C
Set point for over-
temperature shutdown
(T
80°C
OS
) limit default =
Comments
Bit1
M
0
Bit0
LSB
SD
0