STTS751 STMicroelectronics, STTS751 Datasheet - Page 15

• Manufacturer Part Number: STTS751
• Description: 2.25 V low-voltage local digital temperature sensor
• Manufacturer: STMicroelectronics

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STTS751
4.3
Table 12.
4.4
Table 13.
1. With 12-bit resolution selected.
Note:
Weighting of the
ADDR
(hex)
+5.3125 °C
05
06
07
08
+125 °C
–64 °C
–63 °C
–1 °C
+1 °C
bits
R/W
R/W
R/W
R/W
R/W
Temperature limit register format
The high and low limit registers have the same format as the temperature register with the
integer portion of the two's complement value stored in the high byte and the fractional
portion in the low byte. These registers are read-write.
Note that the high limit defaults to 85 °C.
Temperature limit register (two’s complement format)
Temperature examples
The table below shows several examples of how the data is arranged in the high and low
byte pairs used for the temperature and limit registers.
Temperature examples (two’s complement format)
The maximum and minimum values for the temperature registers are 127.9375 (7F:F0h,
high byte : low byte) and –64 (C0:00h), respectively. This also applies to the high and low
limit registers.
(1)
High limit - high byte
Low limit - high byte
High limit - low byte
Low limit - low byte
Register
High byte
Low byte
High byte
High byte
High byte
High byte
High byte
High byte
Low byte
Low byte
Low byte
Low byte
Low byte
Low byte
½ °C ¼ °C
½ °C ¼ °C
sign 64 °C 32 °C
sign 64 °C 32 °C
b7
½ °C
sign
b7
1
0
1
0
1
0
0
0
0
0
0
0
Doc ID 16483 Rev 5
b6
64 °C
¼ °C
b6
1
0
1
0
1
0
0
0
0
1
1
0
1
1
/
/
b5
8
8
°C
°C
32 °C
1
/
b5
8
0
0
0
0
1
0
0
0
0
0
1
0
1
1
16 °C
16 °C
°C
/
/
16
16
b4
°C
°C
1
16 °C
/
8 °C
8 °C
16
b4
b3
0
0
0
0
1
0
0
0
0
1
1
0
0
0
°C
4°C
4°C
b2
0
0
8 °C
STTS751 register summary
b3
0
0
0
0
0
1
0
0
0
0
0
1
0
2 °C 1 °C 55 (85 °C, dec)
2 °C 1 °C
b1
0
0
4°C
b2
0
0
0
0
0
1
0
0
0
1
0
1
0
b0
0
0
default (hex)
2 °C
b1
Power-up
0
0
0
0
0
1
0
0
0
0
0
0
0
00
00
00
1 °C
b0
15/36
0
0
0
1
0
1
0
1
0
1
0
1
0