TH06 datasheet(3/26 Pages) ETC2

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Table 2. General Specifications (Continued)

1.9 < VDD < 3.6 V; TA = –40 to 125 °C default conversion time unless otherwise noted.

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Conversion Time1

CONV

12-bit RH

—

11-bit RH

—

5.8

10-bit RH

—

3.7

4.5

8-bit RH

—

2.6

3.1

14-bit temperature

—

10.8

13-bit temperature

—

6.2

12-bit temperature

—

2.4

3.8

11-bit temperature

—

1.5

2.4

Powerup Time

From VDD

≥ 1.9 V to ready for a

conversion, 25 °C

—

From VDD

≥ 1.9 V to ready for a con-

version, full temperature range

—

After issuing a software reset

command

—

Notes:

1. Initiating a RH measurement will also automatically initiate a temperature measurement. The total conversion time will

be tCONV(RH) + tCONV(T).

2. No conversion or I2C transaction in progress. Typical values measured at 25 °C.

3. Occurs once during powerup. Duration is <5 msec.

4. Occurs during I2C commands for Reset, Read/Write User Registers, Read EID, and Read Firmware Version. Duration is

<100 µs when I2C clock speed is >100 kHz (>200 kHz for 2-byte commands).

5. IDD after a user register write. Initiating any other subsequent I2C transaction on the same bus (such as the user

register read, starting an RH measurement, or traffic directed at other I2C devices) will transition the device to standby

mode.

6. Additional current consumption when HTRE bit enabled. See section “5.5. Heater” for more information

Table 3. I2C Interface Specifications1

1.9

≤ V

DD ≤ 3.6 V; TA = –40 to +125 °C unless otherwise noted.

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Hysteresis

VHYS

High-to-low versus low-to-

high transition

0.05 x VDD

—

SCLK Frequency2

fSCL

—

400

kHz

SCL High Time

tSKH

0.6

—

µs

SCL Low Time

tSKL

1.3

—

µs

Start Hold Time

tSTH

0.6

—

µs

Notes:

1. All values are referenced to VIL and/or VIH.

2. Depending on the conversion command, the TH06 may hold the master during the conversion (clock stretch). At

above 100 kHz SCL, the TH06 may also hold the master briefly for user register and device ID transactions. At the

highest I2C speed of 400 kHz the stretching will be <10 µs.

3. Pulses up to and including 50 ns will be suppressed.

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