New and inherited anomalies

Symptoms

Supply current is increased in Power-down state.

Conditions

The device is in Power-down state, and the CSN, RX_EN, TX_EN, MODE, SCK, MOSI, or ANT_SEL pin is set

high.

Consequences

The supply current may increase up to 500 µA per pin set high.

Workaround

Pull the CSN, RX_EN, TX_EN, MODE, SCK, MOSI, and ANT_SEL pins low in Power-down state. Pull the CSN

pin high together with the PDN pin when changing to Program state.

3.5 [14] System: Increased supply current in Power-

down state

This anomaly applies to IC Rev. Revision 2, build codes QDAA-G00.

Symptoms

Supply current is increased in Power-down state.

Conditions

Device is in Power-down state.

Consequences

• For trace codes earlier than 2223xx (year 22, week 23), the supply current may be up to several

hundred µA in typical conditions. The mean value is expected to be less than 1 µA.

• For trace codes earlier than 2223xx (year 22, week 23) with a green sticker on the reel, vacuum bag,

and inner box label, the supply current may be up to 1µA in typical conditions. The mean value is

expected to be less than 100 nA.

• For trace codes later than 2223xx (year 22, week 23), the supply current may be up to 1µA in typical

conditions. The mean value is expected to be less than 100 nA.

4446_224 v1.2

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