Handling Precautions; Power To Be Supplied; Remodeling The Board; Limitation On The Number Of Connected Rl78/G14 Fast Prototyping Boards - Renesas RL78/G14 User Manual

RL78/G14 Fast Prototyping Board

6. Handling Precautions

6.1

Power to be Supplied

When power is supplied to this product via the USB, note that the maximum current that the regulator
(ISL9005AIRNZ-T from Renesas) can supply is 300 mA.
6.2

Remodeling the Board

Any modification of the board (including removing the patterns for cutting) shall be conducted at the user's
own responsibility.
6.3

Limitation on the Number of Connected RL78/G14 Fast Prototyping Boards

Connecting the same host PC to multiple RL78/G14 Fast Prototyping Boards is not possible.
6.4

Power-Supply Circuits and Usage Conditions

Different power supplies can be selected by remodeling the board. Table 6-1 shows the relationship between
power-supply circuits and usage conditions.
Table 6-1 Power-Supply Circuits and Usage Conditions
Power-Supply
circuit
Power
supplied to
the
RL78/G14
As shipped 3.3 V
(default)
Power-supply VBUS (5 V)
selection or 3.3 V
header
External power- 1.8 V to 5.5 V Only possible
supply header
Coin-cell 3.3 V
battery circuit
Notes: 1. Connecting the RL78/G14 Fast Prototyping Board to an Arduino shield or a board supported by Pmod
shall be conducted at the user's own responsibility and should only proceed after confirming the specifications
of the power supply and interfaces.
2. Modifications after shipment for remodeling the board are stated in this column.
R20UT4573EJ0100 Rev.1.00
Sep.13.19
Use of Use of
Arduino boards
1
shields* supported
by
Pmod*
Possible Possible
Possible Possible
Possible
with 3.3 V
Possible Possible
Usage Condition
Use of an
emulator and
IDE
1
Possible Not required
Possible Required
•
J4: mounted; SS11: removed
•
SS1: removed; SC1: short-circuited
(only for VBUS)
Not possible Required
•
(The emulator
J3: mounted; SS11: removed
circuit is in the
•
EJ1: mounted; EJ1: short-circuited
reset state.)
Not possible Required
•
(The emulator
U2, U3, C9, C12, and L1: mounted
circuit is in the
•
SS11: removed; EJ1: mounted;
reset state.)
EJ1: short-circuited
6. Handling Precautions
*2
Remodeling the board
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