NEC PD75402A Manuale Utente

The 

µ

PD75402A incorporates a clocked 8-bit serial interface, with the following three modes available.

This mode is used when no serial transfer is to be performed, and allows power dissipation to be reduced.

In this mode, 8-bit data transfer is performed using three lines: The serial clock (SCK), serial output (SO), and

serial input (SI).

In the 3-wire serial I/O mode simultaneous transmission and reception is possible, increasing the data transfer

processing speed.

The 3-wire serial I/O mode allows connection to 75X series and 78K series devices and various peripheral I/O

devices.

Serial data transfer is performed MSB-first.