Renesas RL78/F24

E1/E20/E2/E2 Lite Additional Document 2. Designing the User System
R20UT1994EJ0900 Rev.9.00 Page
31
of 58
Jan.20.22
2.6 Internal Circuits of the Emulator
2.6.1 Internal Circuits of the E1 (when the RL78 Family is Connected)
Figure 2-16 shows the internal circuits of the E1 with the RL78 family connected.
Emulator
control
circuit
User-side
connector
100 kW
RSTPU
VDD
4
8
22 W
74LVC125
74LVC8T245
3.3 V
EMVDD
TOOL0
5
74LVC125
EMVDD
74LVC125
74LVC8T245
6
RESET_IN
74LVC125
74LVC8T245
22 W
10
RESET_OUT
3.3 V
74LVC125
22 W 100 kW
GND
14
3.3 V
74LVC8T245
13
RESET_OUT
22 W
470 W
Self-recovering
fuse
2,12
GND
Power-supply circuit
(only for use in the mode to
supply power to the user
system)
EMVDD
EMVDD
9
22 W
22 W
74LVC2T245
100 kW
74LVC125
100 kW × 3
Figure 2-16 Internal Circuit of the E1 (when the RL78 Family is Connected)