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Function explanation : [Function explanation]

Simulation : [Clock frequency] [SPI format] [SSI format] [Microwire format]

  • The Microwire format is a four-wire interface consisting of a clock (SPxCLK), transmission data (SPxDO), reception data (SPxDI) and slave selection (SPxFSS), which can perform half-duplex communication (transmission and reception are performed at different timing).
  • You can set the data size from 4 bits to 16 bits.
  • An 8-bit control message is sent from the master device at the start of communication. After that, a response message is sent from the slave device.

Setting

RegisterSetting
Data size select : SSPxCR0<DSS>
Data : SSPxDR<DATA> (Input in hexadecimal.)

Communication waveforms

SPxFSS
SPxCLK
SPxDO
SPxDI
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
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