Renesas e1 User Manual

E1/E20/E2/E2 Lite Additional Document 2. Designing the User System
R20UT2937EJ0301 Rev.3.01 Page 25 of 45
Jul 1, 2020
2.6 Internal Circuits of the Emulator
2.6.1 Internal Circuits of the E1 (when the RL78 Family is Connected)
Figure 2-9 shows the internal circuits of the E1 with the RL78 family connected.
Emulator
control
circuit
User-side
connector
100 kΩ × 2
100 kΩ
RSTPU
VDD
4
8
22 Ω
74
LVC125
74LVC8T245
3.3 V
EMVDD
TOOL0
5
74
LVC125
EMVDD
74LVC125
74LVC8T245
6
RESET_IN
74LVC125
74LVC8T245
22 Ω
10
RESET_OUT
3.3 V
74
LVC125
22 Ω
100
kΩ
GND
14
3.3 V
74LVC8T245
13
RESET_OUT
22 Ω
470 Ω
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
Ω
22 Ω
74LVC2T245
100 kΩ
74LVC125
100 kΩ
Figure 2-9 Internal Circuit of the E1 (when the RL78 Family is Connected)

Renesas e1 Specifications

General

Brand	Renesas
Model	e1
Category	Computer Hardware
Language	English