HS4014 datasheet(17/27 Pages) RENESAS

Part #	HS4014

Description	High Performance Relative Humidity and Temperature Sensor with Membrane and Digital Output

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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17 / 27 page

HS401x Datasheet

R36DS0023EU0103 Rev.1.03

Jun 6, 2022

Page 17

4.7.1.

Read Register Command

A Read Register sequence consists of the following steps, as illustrated in Figure 21.

Wake up the HS401x series sensor from sleep mode by sending its I2C address with a write bit, and initiate

a Read Register command by sending the command 0xA7.

Send the address of the register to be read.

Change the direction of communication by sending the HS401x I2C address and a read bit. The chip will

send the data stored in this register, after which the master replies with a NACK and a STOP bit.

Figure 21. Read Register Command Sequence

4.7.2.

Write Register Command

A Write Register sequence consists of the following steps, as illustrated in Figure 22.

Wake up the HS401x series sensor from sleep mode by sending its I2C address with a write bit, and initiate

a Write Register command by sending the command 0xA6.

Send the address of the register to write.

Send the data to be stored in this register followed by a STOP bit.

Figure 22. Write Register Command Sequence

HS4014 Datasheet(PDF) 17 Page - Renesas Technology Corp