SI7013-A20-YM0 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

MFG CO.

SI7013-A20-YM0

I2C HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR

Silicon Laboratories 

Si7013-A20

5.2. Reading and Writing User Registers

There are three user registers on the Si7013 that allow the user to set the configuration of the Si7013, the

procedure for accessing these registers is set out below. The checksum byte is not supported after reading a user

register.

Slave

S

W

Address

Sequence to read a register

Read Reg

A

A

Cmd

Slave

Sr Addres R

s

Sequence to write a register

A

ns Read

ig NA

P

Des Data

Slave

Write Reg

S

W

A

A

Write Data

A

P

Address

Cmd

ew 5.3. Measuring Analog Voltage

The analog voltage input pins can accept voltage inputs within the ranges shown in Table 16. VREFP is internally

N connected to VDDA or to an internal 1.25 V reference voltage.

r Table 16. Analog Input Ranges

fo VINP Input Range

Min

Max

VINN Input Range

Min

Max

ed Buffered Input

d Unbuffered Input

0.35 V

0V

VDD–0.35 V

VDD

0.35 V

0V

VDD–0.35 V

VDD

n The voltage conversion output is a signed 16-bit integer that will vary from –32768 to 32767 as the input (VINP–

e VINN) goes from –V to +V. For best performance, it is recommended that |VINP–VINN| be limited to Vref/2. With

minor degradation in performance, this can be extended to 0.8*Vref. The checksum option for voltage mode

Not Recomm conversions is not supported.

Rev. 1.4

25

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