STTS2004 Datasheet, PDF (30/58 Pages) STMicroelectronics – 16 bytes Page Write within 5 ms

Temperature sensor registers
STTS2004
4.6
Device ID and device revision ID register (read-only)
The device IDs and device revision IDs are maintained in this register. The register format is
shown in Table 21. The device IDs and device revision IDs reflect the current device.
Bit 15
0
Table 21. Device ID and device revision ID register (read-only)
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
0
1
0
0
0
1
Device ID
Bit 8
0
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
Bit 3
0
0
Device revision ID
The current device ID and revision ID value is 2201 h.
Bit 2
0
Bit 1
0
Bit 0
1
4.7
Temperature resolution register (read/write)
With this register a user can program the temperature sensor resolution from 9-12 bits as
shown below. The power-on default is always 10 bit (0.25 °C/LSB). The selected resolution
is also reflected in bits (4:3) (TRES1:TRES0) of the capability register.
Table 22. Temperature resolution register (TRES) (read/write)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0
0
0
0
0
0
0
1
Resolution section register
Resolution bits
Table 23. TRES details
Resolution register bits
Bit1
Bit0
°C/LSB
Bits
Conversion time (max)
0
0
0.5
9
0
1
0.25
10
1
0
0.125
11
1
1
0.0625
12
65 ms
125 ms (default)
250 ms
500 ms
The default value is 01 for TRES register.
30/58
DocID024229 Rev 3