Power Supply; Requirements; Power-Up Behaviour - Renesas RL78 Series User Manual

RSKRL78G1G

2. Power Supply

2.1

Requirements

This RSK is supplied with an E1 debugger. The debugger is able to power the RSK board with up to 200mA.
When the RSK is connected to another system then that system should supply power to the RSK. This board
has an optional centre positive supply connector using a barrel power jack.
Details of the external power supply requirements for the RSK, and configuration are shown in Table 2-2
below. The default RSK power configuration is shown in
Connector
PWR
J14 Setting *
PWR Connector/CON_5V/Unregulated_VDD
Pin1-2 shorted
/E1(5V)
PWR Connector/CON_5V/Unregulated_VDD
Pin2-3 shorted
(or R116 Fitted)
CON_3V3/E1(3V3)
Open DO NOT SET
* By default, jumper J14 is not fitted to the RSK. R116 is fitted by default and becomes the same setting as
'J14 Pin2-3 shorted'.
The main power supply connected to PWR1 should supply a minimum of 5W to ensure full functionality.
2.2

Power-Up Behaviour

When the RSK is purchased, the RSK board has the 'Release' build of the example tutorial software pre-
programmed into the Renesas microcontroller. Please consult the 'Renesas Starter Kit Code Generator
Tutorial Manual' for further information of this example.
R20UT3022EG0100 Rev. 1.00
Jan 15, 2015
5VDC Input
Table 2-1: PWR connector Requirements
Supply Source
Table 2-2: Main Power Supply Requirements
Bold, blue text.
Supply voltage
Board_5V
5V
5V
n/a
DO NOT SET
2. Power Supply
Board_VDD
UC_VDD
5V
3.3V
3.3V
DO NOT SET
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