Power Supply; Requirements; Power-Up Behaviour - Renesas RX100 Series User Manual

Renesas Starter Kit for RX140

2. Power Supply

2.1 Requirements

This board has an optional centre positive supply connector using a 2.0mm barrel power jack (PWR). The
main power supply connected to PWR should supply a minimum of 10W to ensure full functionality. When the
board is connected to another system then that system should supply power to the board.
This CPU board supports one external voltage input. Details of the external power supply connection are
shown in Table 2-1 and Table 2-2 below. The default power configuration is shown in
Connector
PWR Input 5VDC
There are RSK products which supports the 12V voltage input. Since this board is supporting the 5V voltage input, be
careful not to connect the power supply of a high-voltage output accidentally.
Moreover, the main power supply connected to PWR should supply a minimum of 10W to ensure full functionality.
J6 J7
Setting Setting
1-2 Shorted Open
1-2 Shorted 1-2 Shorted
1-2 Shorted 1-2 Shorted
2-3 Shorted
1-2 Shorted
*1 : The resistor is not included to a product.
*2 : CAN, LIN and 5V Pmod™ interface can't be used.
*3 : 5V Pmod™ interface can't be used.
*4 : 5V Pmod™, Pmod™ LCD and LED, CAN, LIN can't be used.
*5 : Pmod™ LCD and 3V3 interface can't be used.

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 Smart Configurator
Tutorial Manual' for further information of this example.
R20UT5026EG0100 Rev.1.00
Jan 17, 2022
Table 2-1: PWR connector Requirements
Table 2-2: Main Power Supply Requirements
R37 R44
*1
Don't care Don't care
Fit DNF
DNF Fit
Don't care Don't care
Supply voltage
Supply Source
E2-Lite (3V3) / JA1-3V3
PWR / Unregulated_VCC / JA1-5V
PWR / Unregulated_VCC / JA1-5V
PWR / Unregulated_VCC / JA1-5V
2. Power Supply
bold, blue text.
Board_VCC
UC_VCC
3.3V
*2
3.3V
*3
1.8V *
4
5V
*5
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