I2C, SPI, UART Data Communications on the Raspberry Pi
Overview :: UART To SPI :: OpenCores
1x Breakout Board for SC16IS750 I2C/SPI-to-UART IC
SC16IS750 I2C/SPI to UART Bridge Module | Sandbox Electronics
SC16IS750 I2C/SPI-to-UART IC Breakout Board | eBay
MIKROE-3349 UART I²C/SPI Click - Mikroe | Mouser
SC16IS752 I2C/SPI bus interface to dual channel UART conversion module | eBay
SPI to 4 X UART Bridge (MULTIUART) : 6 Steps - Instructables
USB To UART/I2C/SPI/JTAG Converter, Supports Multiple Interfaces, Compatible with 3.3V and 5V, Multiple Protection Circuits, Multiple Systems Support, Aluminum Alloy Case, Wall-mount & Rail-mount Support
CH341A Programmer USB to UART/IIC/SPI Convertor Parallel Port Converter onboard UART and SPI/I2C Operating Indicator Lamp - AliExpress
Arduino Communication Peripherals: UART, I2C and SPI - Latest Open Tech From Seeed
MAX17851 SPI to UART Safety Monitoring Bridge - Analog Devices / Maxim Integrated | Mouser
SPI to 4 X UART Bridge (MULTIUART) : 6 Steps - Instructables
MAX17851 SPI to UART Safety Monitoring Bridge - Analog Devices / Maxim Integrated | Mouser
UART I2C/SPI Click | Mikroe
CJMCU SC16IS752 I2C-SPI to Dual Channel UART Converter Module
USB Port Converter Module, USB To UART IIC SPI TTL ISP EPP MEM CH341A Chip USB Serial Port Adapter With Working Status Indicator For Program Debugging - Walmart.com
$5 CH347 board is a USB 2.0 bridge to I2C, SPI, UART, JTAG, and GPIO - CNX Software