Renesas RA Family
RA2 Quick Design Guide
R01AN6060EU0100 Rev.1.00
Page 9 of 44
Sep.14.21
2.3 Combination Debug Interface
Figure 3. Debug Interface for both SWD and programming with SCI Connections
Note: 1. The output of the reset circuit of the user system must be open collector.
3. MCU Operating Modes
The RA2
MCU series can enter one of two modes after reset: Single-chip mode or SCI/USB boot mode. The
boot mode is selected by the MD pin:
Table 4. Operating Modes Available at Reset
Operating Mode
MD
On-Chip Flash Memory
Single-chip mode
1
Enable
SCI/USB boot mode
0
Enable
Figure 4 shows operating mode transitions as determined by the mode-setting pin.