Renesas RA4E1 User Manual

Renesas RA Family UM-RA4E1, v1 User's Manual
R12UZ0142EE0100 Rev.0.1 Page
11
of 22
Oct.15.23
5.2.3 MCU Boot Mode
A two-pin header (J15) is provided to select the Boot Mode of the MCU. For normal operation, or Single-
Chip Mode, leave J15 open. To enter SCI Boot Mode or USB Boot Mode, place a jumper on J15.
5.2.4 Debug Interface
The AIK-RA4E1 Debug Interface has two operating modes: (1) Onboard Debug using the Renesas RA4M2
microcontroller J-Link On-Board, 2) External Debug using the JTAG connector(J12).
The J-Link OB USB Micro-B connection jack (J10) connects the Renesas RA4M2 J-Link MCU to an external
USB Full Speed Host, allowing re-programming and debugging of the Main MCU firmware. This is the default
debug mode for AIK-RA4E1.
The Renesas RA4M2 J-Link MCU connects to the Main MCU using the SWD interface.
Table 2. Debug USB Connector (J10)
Debug USB Connector
AIK-RA4E1
Pin
Description
Signal/Bus
1
+5VDC
+5V_JUSB
2
Data-
U3 USB_DM (U3-14)
3
Data+
U3 USB_DP (U3-15)
4
USB ID, jack internal switch, cable inserted
N.C.
5
Ground
GND
A yellow indicator LED4 provides a visual status of the state of the debug interface. When AIK-RA4E1 is
powered on, and LED4 is blinking, this indicates that the RA4M2 J-Link OB is not connected to a
programming host. When LED4 is on solid, this indicates that the RA4M2 J-Link OB is connected to a
programming interface.
Figure 7. AIK-RA4E1 Debug Interface
5.2.4.1 External Debug
One 10-pin Cortex
®
Debug Connector is provided at J12, which supports JTAG and SWD. This connector
may be used for external debug of the Main MCU.

Renesas RA4E1 Specifications

General

Brand	Renesas
Model	RA4E1
Category	Microcontrollers
Language	English