Hi, E1 debugger/flash programmer can be used for any RL78, with connections thru Tool0 and RESET lines (plus VSS/Ground and VDD if powered by E1). The ToolRxD and ToolTxD connections are NOT needed. Please download and install the latest, free RFP (Renesas Flash Programming) V2.05 Software utility from Renesas website. RFP can be used for G10 MCU and all other RL78 MCUs. However, RL78/G10 is a special case. If the board/system voltage is VDD = 4.0V minimum to 5.5V maximum, there is no issue. However if the board is limited to VDD 4.0Volt, then a special Low voltage board must be purchased and used for debugging or flashing G10 4.0Volts. Please see these 2 documents: r20ut2451ej0100_e510y16lvb.pdf (Low voltage OCD Board for RL78/G10 Groups) r20ut2937ej0200_e1e20e2lite_rl78.pdf (E1/E20 Emulator, E2 Emulator Lite) Additional Document for User’s Manual (Notes on Connection of RL78) Supported Devices: RL78 Family RL78/G10 -Mike
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