RX24U CPU Card User's Manual
R12TU0018EJ0120
Page 11 of 26
2022.2.21
5. Functions
5.1
Power Supply
The product does not have a dedicated power supply connector. When connected to the INV-BRD it draws power via
the connector. When not connected to the INV-BRD, it can draw power via the E1 connector. The product is not
allowed to draw power via the E1 connector when it is connected to the INV-BRD.
5.2
Connecting the Emulator
The E1/E2 Lite on-chip debugging emulator from Renesas Electronics is used to write software (program) to the flash
memory of the RX24U. Software will be downloaded into the product via E1 or E2 Lite. It is also necessary to make the
settings shown in Table 5.1 in the integrated development environment or in the Renesas flash programmer to enable
the emulator to supply power to the product. Table 5.2 lists the pin assignments of the E1 connector.
Table 5.1 E1,E2 Lite Emulator Power Supply Settings
Connection to INV-BRD
Power Supply Setting of E1 Emulator
Connected
Power supply not allowed
*
1
Not connected
5 V or 3.3V power supply
Note 1.
When connected to the INV-BRD, the product must draw power from the INV-BRD.
Table 5.2 Pin Assignments of E1 Connector (CN2)
Pin No.
Pin Function
RX24U
Connection Pins
Pin No.
Pin Function
RX24U
Connection Pins
1
NC
⎯
2
GND
EVSS0/VSS
3
NC
⎯
4
NC
5
TXD_1
PD3/TXD1
6
NC
⎯
7
MD/FINED_1
MD/FINED
8
VCC
VCC
9
NC
⎯
10
NC
⎯
11
RXD_1
PD5/RXD
12
GND
VSS/AVSS
13
RESET_1
RES#
14
GND
VSS/AVSS
Note: See
a supplement to the E1/E20/E2 emulator, E2 emulator Lite user’s manual.