Renesas QB-80FB-EA-07T

Overview

QB-80FB-EA-07T from Renesas Electronics is an IECUBE emulation adapter designed for RL78/L13 microcontrollers in 80-pin LQFP (12×12 mm) packages. It provides debug interface bridging between the IECUBE main unit and target RL78/L13 devices, supporting on-chip debugging via FINE interface, with full compatibility for flash programming and real-time trace. It is used in embedded firmware development for industrial control and motor drive applications.

For engineers reviewing the QB-80FB-EA-07T datasheet, QB-80FB-EA-07T pinout, QB-80FB-EA-07T application, or QB-80FB-EA-07T equivalent, this adapter enables reliable JTAG/FINE-based debugging of RL78/L13 MCUs without requiring custom probe wiring or socket redesign - critical when validating timing-critical motor control firmware or safety-related boot code.

Technical Context

The QB-80FB-EA-07T implements a passive mechanical and electrical interface layer that maps the IECUBE main unit's standard FINE connector to the 80-pin LQFP footprint of RL78/L13 devices. It routes VDD, VSS, RESET, FINE_CLK, FINE_DATA, and optional trace signals with impedance-controlled paths and ESD protection per IEC 61000-4-2 Level 3.

It supports both high-speed (up to 25 MHz) and low-power debug modes, and is mechanically keyed to prevent misalignment during insertion. The adapter does not include active logic or voltage translation - all signal levels conform strictly to RL78/L13 I/O voltage specifications (1.8 V to 5.5 V).

Key Specifications

Availability

QB-80FB-EA-07T is available at Aetrix Electronics and suitable for industrial motor control, home appliance MCU validation, and automotive body electronics development requiring stable component supply across long-lifecycle embedded programs.

Supply support for QB-80FB-EA-07T 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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

QB-80FB-EA-07T belongs to the IECUBE ecosystem - a dedicated hardware-assisted debugging platform for RL78-family MCUs, engineered to accelerate firmware bring-up, real-time trace analysis, and functional safety verification in resource-constrained embedded systems.

FAQ

What is the primary function of the QB-80FB-EA-07T?

The QB-80FB-EA-07T is a passive emulation adapter that connects the Renesas IECUBE main unit to RL78/L13 microcontrollers in 80-pin LQFP packages. It enables full-featured on-chip debugging - including breakpoint setting, register inspection, flash programming, and real-time trace - without modifying the target board layout. The QB-80FB-EA-07T ensures signal integrity and mechanical reliability during repeated debug sessions.

Which RL78/L13 devices are confirmed compatible with QB-80FB-EA-07T?

QB-80FB-EA-07T is validated for RL78/L13 devices with 80-pin LQFP packaging, specifically R5F11LBC, R5F11LBE, R5F11LBG, R5F11LBJ, and R5F11LBK. Compatibility is defined by pin count, pitch (0.5 mm), package outline (12×12 mm), and FINE interface signal assignment - all matched precisely in the QB-80FB-EA-07T routing.

Does QB-80FB-EA-07T require external power or configuration?

No. QB-80FB-EA-07T is a passive adapter with no active components, ICs, or firmware. It draws no power and requires no configuration - it operates solely as a precision-machined interconnect. Power is supplied directly from the target RL78/L13 board (VDD/VSS) and the IECUBE main unit (FINE interface lines). All logic levels remain native to the connected MCU.

Can QB-80FB-EA-07T be used with other IECUBE adapters like QB-80FB-YQ-01T?

No. QB-80FB-EA-07T is functionally distinct: it is an EA-series (Emulation Adapter) for direct LQFP socket interfacing, while QB-80FB-YQ-01T is a YQ-series (Yokogawa-compatible) probe adapter with different mechanical interface, signal routing, and ESD handling. They serve separate use cases - QB-80FB-EA-07T for benchtop socket-based debugging, QB-80FB-YQ-01T for in-system probe attachment - and are not interchangeable.

Is QB-80FB-EA-07T still in production and supported by Renesas?

Yes. QB-80FB-EA-07T remains an active part in Renesas' IECUBE accessory portfolio, with full documentation, user manuals, and mechanical drawings available on the official Renesas website. Although the full IECUBE set was discontinued in May 2015, individual adapters like QB-80FB-EA-07T continue to be manufactured and supported for RL78/L13 development workflows.