Can STM32F303 be programmed in multi-drop?

[BTrem.1]

We have a system that uses hundreds of modules. Each module has 4 STM32F303 MCU's. Within a single module we would like to have one programming interface. Is there a means to program 4 MCUs with one programming interface?

[Uwe Bonnes]

You can daisy-chain the JTAG interface

[BTrem.1]

Is the jtag interface the only one that can be used for debugging & programming 2 or more MCU's on a board? Are there any App Notes that discuss this?

[Tesla DeLorean]

If you have your own boot loader you can implement alternate approaches to programming.

Parts could share a common UART RX, and then diode-and UART TX provided you only have one talk at a time. Each device could be addressable if it could identify it's position on the card/module