STCN75M2E STMicroelectronics, STCN75M2E Datasheet - Page 16

• Manufacturer Part Number: STCN75M2E
• Description: IC TEMP SENSOR DIGITAL SO-8
• Manufacturer: STMicroelectronics

Specifications of STCN75M2E

• Featured Product: STM32 Cortex-M3 Companion Products
• Function: Temp Sensor, Watchdog
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire, I2C)
• Digital Output - Number Of Bits: 9 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 0.5°C
• Temperature Sensing Range: -55°C To +125°C
• Supply Current: 125µA
• Supply Voltage Range: 2.7V To 5.5V
• Sensor Case Style: SOIC
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional description
Table 5.
3.1.2
Table 6.
1. Indicates operation mode; 0 = comparator mode, and 1 = interrupt mode (see
2. The OS is active-low ('0').
16/37
value (H)
Pointer
STCN75
Default
Section 2.4: Interrupt
Byte
00
01
02
03
Keys: SD = shutdown control bit
P1 P0 Name
0
0
1
1
M = thermostat mode
POL = output polarity
FT0 = fault tolerance0 bit
Register pointers selection summary
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.
Configuration register format
MSB
Bit7
0
1
0
1
0
0
TEMP
CONF
T
mode).
T
HYS
OS
Bit6
Temperature
register
Configuration
register
Hysteresis register
Overtemperature
shutdown
0
0
Description
(2)
(1)
Bit5
0
0
Doc ID 13307 Rev 8
Width
(bits)
16
16
16
8
Bit4
FT1
0
(R/W)
Read-
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'.
Power-on
Bit3
FT0
Table
default
0
4B00
5000
N/A
00
Section 2.3: Comparator mode
6). The entire register is volatile and
To store measured temperature
data
Default = 75 °C
Set point for overtemperature
shutdown (T
POL
Bit2
0
Comments
OS
) limit default = 80 °C
Bit1
M
0
and
STCN75
Bit0
LSB
SD
0