Renesas QB-80FB-YQ-01T

Overview

QB-80FB-YQ-01T from Renesas Electronics is an emulation probe adapter designed for RL78 family microcontrollers in 80-pin LQFP (12×12 mm) packages, supporting YQ connector interface, target board connection via standard 20-pin IDC header, and full-speed on-chip debugging with IECUBE main unit compatibility.

For engineers reviewing the QB-80FB-YQ-01T datasheet, QB-80FB-YQ-01T pinout, QB-80FB-YQ-01T application, or QB-80FB-YQ-01T equivalent, this adapter enables reliable debug session setup for RL78/G1E, RL78/G1F, RL78/F12–F15, and RL78/L1C MCUs during firmware development and validation.

Technical Context

This adapter bridges the IECUBE main unit's YQ interface to the target RL78 MCU's debug port using a fixed 20-pin ribbon cable and zero-insertion-force (ZIF) socket-compatible layout. It maintains signal integrity for SWD/JTAG clock, reset, and bidirectional data lines across 80-pin LQFP footprints.

It operates at 3.3 V logic level, supports real-time trace and breakpoint execution, and requires no external power-drawing only from the target board's VDD and VSS pins. Mechanical alignment is ensured by dual positioning posts matching standard 80-pin LQFP land patterns.

Key Specifications

Availability

QB-80FB-YQ-01T is available at Aetrix Electronics and suitable for embedded firmware development, production line programming, and lab-based MCU validation requiring stable component supply and long-term tooling continuity.

Supply support for QB-80FB-YQ-01T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power management, and automotive SoCs.

The QB-80FB-YQ-01T belongs to the IECUBE ecosystem-a dedicated hardware debug platform for RL78 MCUs-designed to accelerate firmware bring-up, low-level driver validation, and production-ready code verification.

FAQ

What is the QB-80FB-YQ-01T used for?

The QB-80FB-YQ-01T is an emulation probe adapter that connects the Renesas IECUBE main unit to 80-pin LQFP-packaged RL78 microcontrollers via the YQ interface. It enables full-featured on-chip debugging-including breakpoints, memory inspection, and real-time trace-for development and validation of firmware on RL78/G1E, RL78/F14, RL78/L1C, and other supported devices. The QB-80FB-YQ-01T ensures mechanical and electrical compatibility without requiring custom cabling or soldering.

Is QB-80FB-YQ-01T compatible with the QB-80GK-YQ-01T?

Yes-the QB-80FB-YQ-01T is functionally identical to QB-80GK-YQ-01T, as noted in the official documentation where both part numbers appear in parentheses. They share the same mechanical design, pin mapping, signal routing, and target MCU support. Either part number may be ordered interchangeably for RL78 80-pin LQFP debugging applications.

Which RL78 MCUs does QB-80FB-YQ-01T support?

The QB-80FB-YQ-01T supports all RL78 microcontrollers housed in 80-pin LQFP packages, including RL78/G1E, RL78/G1F, RL78/F12–F15, RL78/L1C, and RL78/I1A derivatives. Specific device support aligns with the QB-80FB-EA-01T and QB-80FB-EA-04T main unit configurations referenced in Renesas' RL78 IECUBE documentation.

Does QB-80FB-YQ-01T require external power?

No-the QB-80FB-YQ-01T draws power solely from the target board's VDD and VSS pins and does not require an external power source or separate power adapter. It is designed for direct integration into existing RL78 evaluation setups powered through standard USB or bench supplies connected to the target board.

Can QB-80FB-YQ-01T be used with newer Renesas debug tools like E2 emulator?

No-the QB-80FB-YQ-01T is specifically engineered for legacy IECUBE hardware and uses the proprietary YQ interface. It is not electrically or mechanically compatible with the E2 or E2 Lite emulators, which use different connectors (e.g., 20-pin ARM standard) and communication protocols. For E2-based workflows, Renesas recommends the appropriate E2-compatible debug adapter for 80-pin RL78 devices.