https://www.nxp.com/products/power-drivers/lighting-driver-and-controller-ics/led-drivers/24-channel-spi-serial-bus-32-ma-5-5-v-constant-current-led-driver:PCA9957
The PCA9957 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant current LED driver optimized for dimming and blinking 32 mA...
serial buschannelspi
https://docs.oracle.com/javame/8.1/me-dev-guide/spi.htm
This document is a resource for software developers and release engineers who want to build applications for the Oracle Java ME Embedded software for embedded...
serial peripheral interfacespi bus