Recommendation for Hardware Setup 32-Bit FR81S Family
Document No. 002-09375 Rev. *B
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The software used for flash programming of this MCU series is FR Cypress Serial Programmer tool. You can see a
snapshot in the Figure 32.
Figure 32. Snapshot of the FR program used for flash programming via Usart0
5.3
Serial programming via MDI interface
A suitable way of programming and debugging is the MDI interface using only one signal (pin Debug I/F) through the
MB2100-01-E debugger.
The MB2100-01-E debugger is connected to the host computer with an USB cable and to the target PCB with a single
wire coaxial.
OCDU is the device built-in debug support unit that provides the on-chip debug function in FR81. OCDU provides the
basic debugger functions (CPU execution/break control, CPU register/memory/IO access), small-scale debug support
functions (event, execution time measurement, trace, etc.), and security function.
Figure 33. Connection of the MB2100-01-E with the host computer and target board
