ENS210 datasheet(9/43 Pages) AMSCO

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ams Datasheet

Page 9

[v1-02] 2018-Feb-19

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ENS210 − Functional Description

The ENS210 integrates two sensor blocks: temperature and

relative humidity.

The device is normally in the standby state (Figure 10): the

measurement engine (see Figure 2) is unpowered, but the I²C

interface is operational and register write/read operation can

be performed. When a measurement command is given, the

device is first booting to active then it starts a measurement.

When the measurement is completed, the device returns to the

standby state. Since the I²C interface is operational in standby,

the measurement result can be read out.

Figure 10:

The ENS210 Power States

In continuous run mode (see Register SENS_RUN) or when low

power is disabled (see Register SYS_CTRL), the device remains

in active state.

The system power status is observable

(see Register SENS_STAT).

When powering up from off, the device is first booting to active,

but then falls immediately back to standby (since no

measurement is pending, and by default low power is enabled).

Note that the booting state is a transient state (the system

automatically transitions to the next state – active); the booting

time is given in Figure 9.

Functional Description

off

active

standby

booting

booted

power on

power off

measurement (s) completed and low power enabled

start measurement

disable low power

ENS210 Datasheet(PDF) 9 Page - ams AG