HS300x-ML1 Datasheet

R36DS0016EU0001 Rev.0.01

Nov 8, 2021

Page 10

5.

Sensor Interface

The HS300x-ML1 series sensor uses a digital I2C-compatible communication protocol. To accommodate

multiple devices, the protocol uses two bi-directional open-drain lines: the Serial Data Line (SDA) and the Serial

one master device can be present on the line.

5.1

I2C Features and Timing

The HS300x-ML1 series sensor operates as a slave device on the I2C bus with support for 100kHz and 400kHz

bit rates. Each transmission is initiated when the master sends a 0 START bit (S), and the transmission is

terminated when the master sends a 1 STOP bit (P). These bits are only transmitted while the SCL line is HIGH.

Figure 13. Timing Diagram

Table 5. I2C Timing Parameters

Parameter

Symbol

Minimum

Typical

Maximum

Unit

SCL Clock Frequency[1]

20

400

kHz

START Condition Hold Time Relative to SCL Edge

0.1

µs

Minimum SCL Clock LOW Width[2]

0.6

µs

Minimum SCL Clock HIGH Width[2]

0.6

µs

START Condition Setup Time Relative to SCL Edge

0.1

µs

Data Hold Time on SDA Relative to SCL Edge

0

0.5

µs

Data Setup Time on SDA Relative to SCL Edge

0.1

µs

STOP Condition Setup Time on SCL

0.1

µs

Bus Free Time Between STOP Condition and START

Condition

1

µs

1.

The minimum frequency of 20kHz applies to test only; no minimum under normal operations.

2.

Combined LOW and HIGH widths must equal or exceed the minimum SCL period.

5.2

Sensor Slave Address

more information, see “I2C Communication.”

Custom I2C address can be provided upon request.

SDA

SCL