I am using the following MCUs:
H8S/2426, /2426R, /2424 Group
H8S/2427, /2427R, /2425 Group
H8S/2456, /2456R, /2454 Group
While I am debugging the built-in flash write program with E10A-USB, the system stops responding and, after a while, the following message appears: “Communication between emulator and device is lost.”
If the program is stopped in the user program mode, communication with the user system is disabled.
Therefore, make sure you stop the program after the user program mode has been released (after FMCMDEN bit of FLMCR1 register is set to 0).