Datasheet
HDC1080
www.ti.com
SNAS672A –NOVEMBER 2015–REVISED JANUARY 2016
8.6.3 Configuration Register
This register configures device functionality and returns status.
Table 4. Configuration Register Description (0x02)
NAME Bits DESCRIPTION
RST [15] Software reset 0 Normal Operation, this bit self clears
bit
1 Software Reset
Reserved [14] Reserved 0 Reserved, must be 0
HEAT [13] Heater 0 Heater Disabled
1 Heater Enabled
MODE [12] Mode of 0 Temperature or Humidity is acquired.
acquisition
1 Temperature and Humidity are acquired in sequence, Temperature first.
BTST [11] Battery Status 0 Battery voltage > 2.8V (read only)
1 Battery voltage < 2.8V (read only)
TRES [10] Temperature 0 14 bit
Measurement
1 11 bit
Resolution
HRES [9:8] Humidity 00 14 bit
Measurement
01 11 bit
Resolution
10 8 bit
Reserved [7:0] Reserved 0 Reserved, must be 0
8.6.4 Serial Number Registers
These registers contain a 40bit unique serial number for each individual HDC1080.
Table 5. Serial Number Register Description (0xFB)
Name Bits Description
SERIAL ID[40:25] [15:0] Serial Id bits Device Serial Number bits from 40 to 25 (read only)
Table 6. Serial Number Register Description (0xFC)
Name Bits Description
SERIAL ID[24:9] [15:0] Serial Id bits Device Serial Number bits from 24 to 9(read only)
Table 7. Serial Number Register Description (0xFD)
Name Bits Description
SERIAL ID[8:0] [15:7] Serial Id bits Device Serial Number bits from 8 to 0 (read only)
[6:0] Reserved Reserved, always 0 (read only)
8.6.5 Manufacturer ID Register
This register contains a factory-programmable identification value that identifies this device as being
manufactured by Texas Instruments. This register distinguishes this device from other devices that are on the
same I2C bus. The manufacturer ID reads 0x5449.
Table 8. Manufacturer ID Register Description (0xFE)
Name Bits Description
MANUFACTURER [15:0] Manufacturer 0x5449 Texas instruments ID (read only)
ID ID
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