The JN5169 includes an industry-standard I2C-bus 2-wire synchronous serial interface that can operate as a master (MSIF) or slave (SSIF), providing a simple and efficient method of data exchange between devices.
The SPI-bus allows high-speed synchronous data transfer between the JN5169 and peripheral devices. The JN5169 operates as a master on the SPI-bus and all other devices connected to the SPI-bus are expected to be slave devices under the control of the JN5169 CPU.
Failure to do so will likely result in the JN5169 failing to meet the performance specification detailed in this data sheet and the worst case may result in the device not functioning in the end application. 8.2.1 Power supplies The device is powered from the VDDAand VDDDpins, each being decoupled with a 100 nF ceramic capacitor.