# Title: SEGGER RL78 14-Pin Programming Adapter (8.06.20)


## Description: Convert Standard J-Link to Renesas E1 Connector The SEGGER RL78 14-Pin Programming Adapter seamlessly converts the standard 20-pin 0.1" J-Link connector to the Renesas-defined 14-pin E1 connector, enabling efficient flash programming of RL78 microcontrollers. This essential adapter bridges the gap between SEGGER's Flasher programming tools and Renesas RL78 target hardware. Supported RL78 Microcontroller Cores Family Supported Cores RL78/D Series RL78/D1A RL78/F Series RL78/F12, RL78/F13, RL78/F14, RL78/F15 RL78/G Series RL78/G10, RL78/G11, RL78/G12, RL78/G13, RL78/G14 RL78/G1 Series RL78/G1A, RL78/G1C, RL78/G1D, RL78/G1E, RL78/G1F, RL78/G1G, RL78/G1H RL78/I Series RL78/I1A, RL78/I1B, RL78/I1C, RL78/I1D, RL78/I1E RL78/L Series RL78/L12, RL78/L13, RL78/L1A, RL78/L1C Selectable Target Supply Voltage The adapter provides flexible power options with jumper-selectable 3.3V or 5V supply voltage. When the supply option is jumpered, the target is powered via the VTREF connection, eliminating the need for external power during programming operations. Important: This adapter is exclusively for flash programming. It cannot be used with J-Link debug probes and does not support debugging functionality for RL78 devices. Wiring Quick-Start Essential Connections 14-pin E1 connector pinout diagram Pin 1: GND Pin 2: GND Pin 3: VDD Pin 4: RSTPU (Pull-up resistor for reset) Pin 5: TOOL0 (Bidirectional data line) Pin 6: RESET_IN Pin 8: VSS Pin 10: RESET_OUT Pin 12: GND Pin 13: RESET_OUT Pin 14: GND TOOL0 Pull-up Configuration RL78 devices use open-drain TOOL0 pins requiring external pull-up resistors. While evaluation boards typically include these resistors, the adapter features an additional solder bridge between VTREF and TOOL0 to accommodate targets without built-in pull-ups. Recommended pull-up resistance: 1kΩ to VTREF Programming Interface Specifications Parameter Specification Input Connector 20-pin 0.1" standard (J-Link compatible) Output Connector 14-pin E1 connector (Renesas standard) Supply Voltage 3.3V or 5V (jumper selectable) Communication Protocol Single-line UART via TOOL0 Target Current Up to 500mA For J-Link debug functionality, use SEGGER's standard J-Link adapters. This RL78 adapter is specifically designed for production flash programming with Flasher tools.


## Product type: Adapter


## Vendor: SEGGER Microcontroller GmbH


## Tags: Accessory, Adapter, Debugger Accessory, Debugger Adapter, Flasher, Programmer Adapter, Renesas, RL78, SEGGER


## Price range: 50.26 - 50.26 GBP


## Link: https://thedebugstore.com/products/segger-rl78-programming-adapter-8-06-20


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## Variants

- Default Title, SKU: 8.06.20, Available: yes, Inventory: 0


## Metafields 

- manufacturer: SEGGER Microcontroller GmbH
- brand: SEGGER
- warranty: 12 months
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- key_feature_1: Converts 20-pin J-Link connector to 14-pin Renesas E1 connector for RL78 flash programming.
- title_tag: SEGGER RL78 14-Pin Programming Adapter 8.06.20 | Debug Store UK
- description_tag: SEGGER RL78 programming adapter converts 20-pin J-Link to 14-pin E1. Supports all RL78 series with selectable voltage. Shop now at Debug Store UK.
- backorder_label: If no stock is shown above, order now and we'll ship within 5 working days.
- brands: gid://shopify/Metaobject/56257708255
- breadcrumbs: ["gid://shopify/Collection/269202686141","gid://shopify/Collection/447917162719","gid://shopify/Collection/447953600735"]
- manufacturer: SEGGER Microcontroller GmbH
- warranty: 12 months
- mpn: 8.06.20
- customhs_code: 847180
- summary: <section class="product-rich">
The SEGGER RL78 14-Pin Programming Adapter (8.06.20) provides the essential interface between SEGGER Flasher programming tools and Renesas RL78 microcontroller targets. This compact adapter converts the standard 20-pin 0.1" connector to the Renesas-defined 14-pin E1 connector, supporting comprehensive flash programming across the extensive RL78 family including G, F, D, I, and L series devices.

<div class="spec-note">Features jumper-selectable 3.3V or 5V target supply and includes integrated TOOL0 pull-up capability.</div>
The adapter includes a 14-pin ribbon cable and supports optional target power supply via the VTREF connection. Compatible with all SEGGER Flasher programming tools, this adapter ensures reliable production-grade flash programming for RL78-based designs.

<div class="aside"> <strong>Related Products:</strong> <a href="https://thedebugstore.com/products/segger-flasher-pro">SEGGER Flasher PRO</a> | <a href="https://thedebugstore.com/products/segger-flasher-compact">SEGGER Flasher Compact</a> </div> </section>
- key_feature_2: Converts 20-pin J-Link to 14-pin E1 connector
- key_feature_2_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Enables connection between SEGGER Flasher tools and RL78 targets"}]}]}
- key_feature_3: Supports entire RL78 microcontroller family
- key_feature_3_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Compatible with G, F, D, I, and L series RL78 devices"}]}]}
- key_feature_4: Jumper-selectable 3.3V or 5V target supply
- key_feature_4_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Flexible voltage options for different target requirements"}]}]}
- key_feature_5: Integrated TOOL0 pull-up capability
- key_feature_5_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Built-in solder bridge for targets without external pull-ups"}]}]}
- key_feature_6: Flash programming optimised design
- key_feature_6_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Specifically engineered for production programming workflows"}]}]}
- key_feature_7: Includes 14-pin ribbon cable
- key_feature_7_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Complete connection solution ready for immediate use"}]}]}
- key_feature_8_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Robust construction suitable for manufacturing environments"}]}]}
- key_feature_8: Production-grade reliability
- why_people_choose_3_title: Flexible Power Options
- why_people_choose_2_title: Universal RL78 Support
- why_people_choose_1_title: Production Programming
- why_people_choose_1: Enables reliable high-volume flash programming of RL78 microcontrollers in manufacturing environments
- why_people_choose_3: Jumper-selectable voltage and optional target supply simplifies setup across different designs
- why_people_choose_2: Single adapter supports entire RL78 family eliminating need for multiple interface solutions
- 1570165: What RL78 microcontrollers does this adapter support?***SIMP***The adapter supports the complete RL78 family including D1A, F12-F15, G10-G14, G1A-G1H, I1A-I1E, and L12-L1C series microcontrollers. It works with all devices that use the standard 14-pin E1 connector interface defined by Renesas.
- 1570167: Can I use this adapter with J-Link debug probes for debugging?***SIMP***No, this adapter is exclusively designed for flash programming with SEGGER Flasher tools. It cannot be used with J-Link debug probes and does not support debugging functionality. For debugging RL78 devices, use standard J-Link adapters.
- 1570168: How do I select between 3.3V and 5V target supply voltage?***SIMP***The adapter features a jumper that allows selection between 3.3V and 5V supply voltage. When the supply option is jumpered, the target receives power via the VTREF connection. Remove the jumper if your target has independent power supply.
- 1570169: Do I need external pull-up resistors for the TOOL0 line?***SIMP***RL78 devices require pull-up resistors on the TOOL0 line. While most evaluation boards include these resistors, the adapter provides an additional solder bridge between VTREF and TOOL0 for targets without built-in pull-ups.
- 1570170: What cable is included with the adapter?***SIMP***The adapter includes a 14-pin ribbon cable for connecting to your target hardware. The cable provides all necessary signal connections between the adapter and the RL78 target board.
- 1570171: Can this adapter power my target board during programming?***SIMP***Yes, when the supply jumper is configured, the adapter can provide either 3.3V or 5V to power the target via the VTREF connection. Maximum target current is 500mA.
- 1570172: Is this adapter compatible with all SEGGER Flasher models?***SIMP***Yes, the adapter is compatible with all SEGGER Flasher programming tools including Flasher PRO, Flasher Compact, Flasher ATE2, and other models that use the standard 20-pin 0.1" connector.
- 1570174: What programming protocols does the adapter support?***SIMP***The adapter supports single-line UART communication via the TOOL0 pin, which is the standard programming interface for RL78 microcontrollers. Communication rates up to 1MHz are supported.
- 1570175: Can I use this adapter for in-circuit programming?***SIMP***Yes, this adapter is designed for in-circuit programming applications. It allows programming of RL78 devices that are already soldered onto target PCBs through the 14-pin E1 connector interface.
- 1570176: How do I connect this adapter to my programming setup?***SIMP***Connect the 20-pin connector to your SEGGER Flasher device, then connect the 14-pin ribbon cable to your target board's E1 connector. Configure voltage selection jumper as needed and ensure proper ground connections.