STLM75 STMicroelectronics, STLM75 Datasheet - Page 17

• Manufacturer Part Number: STLM75
• Description: Digital Temperature Sensor And Thermal Watchdog
• Manufacturer: STMicroelectronics

3.1.2
Table 5.
Configuration register
The Configuration register is used to store the device settings such as Device Operation
mode, OS Operation mode, OS Polarity, and OS 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)
STLM75 Reserved
Pointer
Default
Byte
Interrupt mode on page
00
01
02
03
Keys: SD = Shutdown Control Bit
M = Thermostat Mode
POL = Output Polarity
FT0 = Fault Tolerance0 Bit
P1
0
0
1
1
Register pointers selection summary
Configuration register format
MSB
Bit7
0
P0
0
1
0
1
TEMP
CONF
Name
T
T
13).
HYS
OS
Bit6
0
0
Configuration
Temperature
Description
temperature
Hysteresis
Shutdown
(2)
(1)
Register
Register
Register
Over-
Bit5
0
0
Width
(Bits)
Bit4
FT1
16
16
16
0
8
Table
Read-
(R/W)
Type
R/W
R/W
R/W
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'. Reserved.
only
Bit3
FT0
0
6). The entire register is volatile and
Default
Power-
4B00
5000
N/A
on
00
POL
Bit2
0
Comparator mode
To store Measured
Temperature Data
Default = 75°C
Set point for Over-
temperature Shutdown
(T
OS
) limit default = 80°C
Comments
Bit1
M
0
and
Bit0
LSB
SD
0
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