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AS6221

Register Description

Datasheet

• PUBLIC

DS000751

• v3-00 • 2022-Feb-28

38

│ 15

6.2.3

Conversion Rate Bits

The conversion rate bits define the number of executed temperature conversions per time unit.

Additional readouts of the temperature register between conversions are possible but not

recommended because the value is changed only after a conversion is finished.

Values of 125 ms, 250 ms, 1 s and 4 s for a conversion can be configured while the default rate is set

to 4 conversions per second. The following table summarizes the different configuration settings:

Figure 15:

Conversion Rate Configuration

Conversion Rate Bits

Conversion Rate

Bit 7

Bit 6

Conv/s

0

0

0.25

0

1

1

1

0

4

1

1

8

The device immediately starts a conversion after a power-on sequence and provides the first result

after typ. 36 ms (max. 51 ms). A higher power consumption occurs during the actual conversion while

the device stays in the standby mode after a finished conversion until the next conversion is activated.

This is shown in the following figure.

Figure 16:

Conversion Sequence

6.2.4

Sleep Mode

The sleep mode is activated by setting the bit SM in the configuration register to 1. This shuts the

device down immediately and reduces the power consumption to a minimum value.