TC35680FSG datasheet(49/91 Pages) TOSHIBA

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TC35680FSG-002/TC35681FSG-002

2019-04-04

4.8. SPI Interface

Feature

The serial peripheral interface has the following features;



Reference I/O power supply: VDDIO



Channel number: 2 for QFN package



SPI function



Chip select:

2 channels for QFN package



Chip select polarity:

High active or Low active can be selected.



Serial clock of Master: The clock polarity and the phase can be adjusted (selectable from among 4 combinations)



Serial clock frequency: 8 kHz to 16 MHz



Serial data transfer:

Both MSB first and LSB first are available.

The SPI interface operates at the VDDIO power supply voltage. Because the power supply pin is shared with other hardware

interfaces, the voltage of the SPI interface cannot be independently different.

Connection Example

The SPI interface can be connected to a serial EEPROM and a serial Flash memory.

The SPI interface has one chip select pin. Figure 4-10 shows an example of the connection with a serial Flash ROM through the SPI

interface of TC35680/TC35681.

Figure 4-10 Connection example of SPI interface to Serial Flash ROM

TC35680/

TC35681

Chip select (SPI-SCS)

Serial clock (SPI-SCLK)

Write data (SPI-DOUT)

Read data (SPI-DIN)

Serial

Flash ROM

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