Decoder, receiver, and electronic device

A decoder configured to decode data, the decoder comprising:

• a semiconductor device comprising:
• a first circuit;
• and
• a second circuit comprising:
• a first transistor;
• a second transistor, a gate of the second transistor is electrically connected to one of a source and a drain of the first transistor;
• and
• a third transistor, a gate of the third transistor is electrically connected to one of a source and a drain of the second transistor,
• wherein the first circuit is configured to hold data while power supply voltage is supplied,
• wherein the second circuit is configured to hold the data while power supply voltage is not supplied,
• wherein the first transistor and the second transistor comprise an oxide semiconductor in a channel formation region,
• wherein the third transistor comprises silicon in a channel formation region,
• wherein the decoder is configured to provide and stop power supply to the semiconductor device depending on whether a packet of the data is a null packet or not, and
• wherein the decoder is configured to perform data storing and restoring of data between the first circuit and the second circuit.

A decoder configured to decode data, the decoder comprising:

• a semiconductor device comprising:
• a first circuit configured to hold data while power supply voltage is supplied;
• and
• a second circuit configured to hold the data while power supply voltage is not supplied,
• wherein the first circuit comprises a transistor comprising an oxide semiconductor in a channel formation region,
• wherein the decoder is configured to provide and stop power supply to the semiconductor device depending on an identifier of a header portion of the data, and
• wherein the decoder is configured to perform data storing and restoring of data between the first circuit and the second circuit.