E2/E2 Lite
R20UT4582EJ0100 Rev.1.00
Page 14 of 30
Jul.16.19
2.5.2
MD Pin
Connection of the MD pin to the connector is optional.
When debugging with the E2/E2 Lite, set the MD pin to the high level. When rewriting flash memory by the
programming software, set the MD pin to the low level.
When the contents of flash memory are being rewritten by the programming software, the MD pin must be
handled so that it is switched to the low level. The circuit for the MD pin of the MCU includes a pull-up
resistor.
MCU
MD
4.7 k
Ω
to
10 k
Ω
Figure 2.5 Connection of the MD Pin
2.5.3 EHMD Pin
In debugging with the E2/E2 Lite, the MCU cannot enter the energy harvesting mode.
The EHMD pin must
be handled so that it is switched to the low level.
MCU
EHMD
4.7 k
Ω
to
10 k
Ω
VCC
4.7 k
Ω
to
10 k
Ω
Figure 2.6 Connection of the EHMD Pin
