Handling Precautions; Power To Be Supplied; Remodeling The Board; Limitation On The Number Of Connected Rl78/I1C (512 Kb) Fast Prototyping Boards - Renesas RL78/I1C User Manual

RL78/I1C (512 KB) Fast Prototyping Board

6. Handling Precautions

6.1

Power to be Supplied

When power is supplied to this product through the USB, note that the current drawn by the whole system
should not exceed the maximum of 200 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/I1C (512 KB) Fast Prototyping
Boards
Connecting the same host PC to multiple RL78/I1C (512 KB) 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. Figure 6-1 shows the block diagram of the power-supply circuit.
Table 6-1 Power-Supply Circuits and Usage Conditions
Power-supply
circuit
Power
supplied to
the RL78/I1C
As shipped 3.3 V
Power-supply VBUS (5 V)
selection
header
3.3 V
External power- 1.6 V to 5.5 V Only possible
supply header
*1. Connecting the RL78/I1C (512 KB) 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.
R20UT4947EJ0100 Rev. 1.00
Apr.01.21
Use of Use of
Arduino boards
1
shields* supported by
Pmod *
Possible Possible
Possible Possible
Possible Possible
Possible
with 3.3 V
Usage Condition
Use of an
emulator and
IDE
1
Possible Not required
Possible Required
J8: mounted; J8: 2-3 short-circuit;
E_+3V3: removed
+3V3: short-circuit; A_+3V3:
removed
Possible Required
J8: mounted; J8: 1-2 short-circuit;
E_+3V3: removed
+3V3: short-circuit
Not possible Required
(The emulator J9: mounted; E_+3V3: removed
circuit is in the
EJ2: mounted; EJ2: short-circuit
reset state.)
6. Handling Precautions
*2
Remodeling the board
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