Renesas RA Microcontrollers EK-RA6M2 v1 – User's Manual
R20UT4578EU0102 Rev.1.02 Page 13 of 32
Jul.29.20
Figure 14. E6 on the Evaluation Kit Board (Bottom side)
Once the shorting traces have been removed, there are several options to measure current:
• Pins can be installed that allow connection of a precision multi-meter or bench meter, or leaded current
shunt to allow oscilloscope or data logger connection. When not measuring the current, this allows easily
installed and removed shunts to be used to short the jumper terminals.
• Another option is to install current sense resistors between pads 1 and 3 for +3V3 MCU, and between
pads 2 and 4 for VBAT. Precision non-inductive film or foil resistors are recommended for use in this
application, and the value of each resistor should be carefully considered.
For example, if the expected current requirement for the +3V3 MCU supply voltage is 10 mA, and the
user would expect to measure a 10 mV drop across the current measurement resistor, then a 1.0-ohm
resistor should be selected and installed.
The actual value selected should be based on the operating conditions of the MCU for the specific user
application, and the sensitivity of the measurement equipment used.
5.3 Main Components
• Main MCU
Renesas RA6M2 MCU device, part number R7FA6M2AF3CFB (U1)
• J-Link MCU
Renesas Synergy™ S124 MCU device, part number R7FS124773A01CFM#AA0 (U2)
• USB Connectors
FCI, part number 10118192-0001LF (J9, J11)
• Micro USB 2.0 Female connector
• Primary communication with Main MCU and J-Link MCU
• Push-Buttons
C&K, part number PTS645SM43SMTR92 LFS (S1, S2)
• Momentary push-button switch
• Used for system reset and user defined functions
• LDO Regulator
Diodes Inc., part number AP7215-33YG-13 (U3)
• Low-drop out linear regulator
• Generates system 3.3 V from J-Link USB 5 V input
• PMOD A Connector
Samtec, part number SSW-106-02-F-D-RA (J5)
• 12-pin right angle connector for PMOD A
• PMOD B Connector
Samtec, part number SSW-106-02-FM-S-RA (J6)
• 6-pin right angle connector for PMOD B
• Pin Headers
Sullins, part number PRPC020DAAN-RC (J1, J2, J3, J4)
• 40 position pin header, 0.1” pitch
• Provides signal breakout and access for Main MCU signals
• System LED
Dialight, part number 598-8610-207F (LED2)
• Dual color red/green LED
• System status indicator for power and J-Link status
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