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SI7013-A10

I2C HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR

Silicon Laboratories 

Si7013-A10

Table 3. I2C Interface Specifications1

1.9  VDD  3.6 V; TA = –40 to +85 °C (G grade) or –40 to +125 °C (I/Y grade) unless otherwise noted.

Parameter

Symbol

Test Condition

Min

Typ Max Unit

Hysteresis

VHYS High-to-low versus low-to- 0.05 x VDD —

—

V

high transition

SCLK Frequency2

fSCL

—

SCL High Time

tSKH

0.6

SCL Low Time

tSKL

1.3

Start Hold Time

tSTH

0.6

Start Setup Time

tSTS

0.6

Stop Setup Time

tSPS

0.6

Bus Free Time

tBUF

Between Stop and Start

1.3

SDA Setup Time

tDS

100

SDA Hold Time

tDH

100

SDA Valid Time

tVD;DAT From SCL low to data valid

—

SDA Acknowledge Valid Time tVD;ACK From SCL low to data valid

—

Suppressed Pulse Width3

tSP

50

—

400 kHz

—

—

µs

—

—

µs

—

—

µs

—

—

µs

—

—

µs

—

—

µs

—

—

ns

—

—

ns

—

0.9

µs

—

0.9

µs

—

—

ns

Notes:

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

2. Depending on the conversion command, the Si7013 may hold the master during the conversion (clock stretch). At

above 300 kHz SCL, the Si7013 may 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 50ns will be suppressed.

SCL

tBUF

tSTH

1/fSCL

tSKH

tSP

tDS

tDH

tSKL

tSPS

SDA

Start Bit

D7

D6

D5

D0

R/W

ACK

Stop Bit

tSTS

tVD : ACK

Figure 1. I2C Interface Timing Diagram

6

Rev. 1.0

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