Renesas RL78/G1D

E1/E20/E2/E2 Lite Additional Document 2. Designing the User System
R20UT1994EJ0910 Rev.9.10 Page 18 of 59
Oct.06.23
Table 2-2 14-Pin Connector Pin Assignments
Pin
No.
RL78 family MCUs in general *7
Only for the RL78/G11, the
RL78/I1C, and 20- and 24-pin
versions of the RL78/G12
Note
Signal *1
Direction *2
Signal *1
Direction *2
1 R.F.U *5 － R.F.U *5 －
2
GND
*3
－
GND
*3
－
3 R.F.U *5 － R.F.U *5 －
4
R.F.U
*5
－
RSTPU
Input
This pin is used to pull
up the reset line (only
when the RL78/G11,
the RL78/I1C, and 20-
and 24-pin versions of
the RL78/G12 are in
use).
5 TOOL0 I/O TOOL0 I/O
This pin is used to
transmit command/data
to the target device.
6
RESET_IN
Output
RESET_IN
Output
This pin is used to
input a reset signal
from the user system.
7 R.F.U *5 － R.F.U *5 －
8
VDD
－
VDD
－
9 EMVDD *6 － EMVDD *6 －
10
RESET_OUT
*4
Input
RESET_OUT
*4
Input
This pin is used to
output a reset signal to
the target device.
11 R.F.U *5 － R.F.U *5 －
12
GND
*3
－
GND
*3
－
13 RESET_OUT *4 Input RESET_OUT *4 Input
This pin is used to
output a reset signal to
the target device.
14
GND
*3
－
GND
*3
－
*1
For details on the programming software, refer to the following.
https://www.renesas.com/RFP
*2
“Input” refers to input from the emulator to the user system and “output” refers to output from the user
system to the emulator.
*3
Securely connect pins 2, 12, and 14 of the connector to GND of the user system. These pins are used
for electrical grounding as well as for monitoring of connection with the user system by the
E1/E20/E2/E2 Lite.
*4
Securely connect both pin 10 and pin 13.
*5
This pin is reserved. Perform the open processing.
*6
Connect the driving power supply for the TOOL0 pin to EMVDD.
Please connect VDD when the MCU does not have power supplies other than VDD such as EVDD.
The E2 Lite only supports a single power supply. If you are using an MCU that requires two or more
power supplies with the E2 Lite, use a power supply other than VDD, such as EVDD, which has the
same voltage as VDD.
*7
This indicates RL78 family MCUs other than the RL78/G11, the RL78/I1C and 20- and 24-pin versions
of the RL78/G12.