As for UARTs, the Raspberry Pi’s one-and-a-half UART interface has long been an issue in robotics and home automation applications. With a slew of devices like radio receivers/transmitters ...
Raspberry Pi sent us one for review ... Other connections include PoE on a four-pin header, an ARM debug / UART on a three pin header, and a JST battery connector to keep the real-time clock ...
The Raspberry Pi 500 is a keyboard-integrated PC equipped ... The terminal to the right of the Ethernet controller appears to be a UART terminal. The power management chip is Dialog's 'DA9091'.