E1/E20/E2/E2 Lite Additional Document
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 k
W
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 k
W
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 k
W
74LVC125
Self-recovering
fuse
User-side
connector
100 k
W
× 3
Figure 2-17 Internal Circuits of the E20 (RL78 Family)
