Renesas RL78/F24 - Internal Circuits of the E20 (When the RL78 Family Is Connected)

E1/E20/E2/E2 Lite Additional Document 2. Designing the User System
R20UT1994EJ0900 Rev.9.00 Page
32
of 58
Jan.20.22
2.6.2 Internal Circuits of the E20 (when the RL78 Family is Connected)
Figure 2-17 shows the internal circuits of the E20 with the RL78 family connected.
Emulator
control
circuit
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
2,12
GND
EMVDD
EMVDD
9
22 W
22 W
74LVC2T245
100 kW
74LVC125
Self-recovering
fuse
User-side
connector
100 kW × 3
Figure 2-17 Internal Circuits of the E20 (RL78 Family)