Renesas QB-64GB-NQ-01T

Overview

QB-64GB-NQ-01T from Renesas Electronics is a target connector adapter designed for RL78 family microcontrollers in 64-pin FBGA (4×4 mm) packages, enabling debug and programming via IECUBE emulation systems with NQ-series probe compatibility, used in embedded firmware development and production programming of RL78/G1E, RL78/L12, and RL78/L1C MCUs.

For engineers reviewing the QB-64GB-NQ-01T datasheet, QB-64GB-NQ-01T pinout, QB-64GB-NQ-01T application, or QB-64GB-NQ-01T equivalent, this part serves as a standardized mechanical and electrical interface between the IECUBE main unit and 64-pin FBGA-packaged RL78 MCUs - critical for JTAG/SWJ-based debugging, flash programming, and functional validation during hardware bring-up and firmware iteration.

Technical Context

QB-64GB-NQ-01T implements a passive, zero-insertion-force (ZIF)-free socketless interface optimized for 64-pin FBGA (4×4 mm, 0.5 mm pitch) RL78 devices including R5F10FME, R5F10FLE, and R5F10FJE variants. It maps MCU signal pins-including RESET, CLK, TMS, TCK, TDI, TDO, and VDD/VSS-to the NQ-series emulation probe's standardized 20-pin header layout per Renesas' IECUBE architecture.

The adapter supports full-speed SWD and JTAG protocols at up to 10 MHz, maintains signal integrity through controlled trace impedance and minimized stub length, and complies with Renesas' IECUBE mechanical alignment specifications for repeatable probe-to-target engagement without soldering or permanent mounting.

Key Specifications

Availability

QB-64GB-NQ-01T is available at Aetrix Electronics and suitable for RL78 firmware development, production programming, and hardware validation requiring stable component supply, consistent mechanical fit, and guaranteed protocol-level compatibility with Renesas IECUBE systems.

Supply support for QB-64GB-NQ-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 specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT applications.

QB-64GB-NQ-01T belongs to the IECUBE ecosystem - a family of modular, MCU-specific debug adapters engineered to simplify and standardize firmware development across Renesas' RL78 16-bit MCU portfolio.

FAQ

What is the primary function of QB-64GB-NQ-01T in an RL78 development workflow?

QB-64GB-NQ-01T serves as a mechanical and electrical bridge between the Renesas IECUBE main unit (in NQ mode) and 64-pin FBGA-packaged RL78 MCUs. It enables reliable JTAG/SWD communication for debugging, flash programming, and real-time trace without soldering or custom cabling - accelerating hardware-software integration for QB-64GB-NQ-01T users.

Which RL78 microcontroller families are compatible with QB-64GB-NQ-01T?

QB-64GB-NQ-01T supports RL78/G1E (e.g., R5F10FME), RL78/L12 (e.g., R5F10FLE), and RL78/L1C (e.g., R5F10FJE) devices in 64-pin FBGA (4×4 mm) packages. Compatibility is confirmed by pin mapping alignment with Renesas' official IECUBE NQ adapter documentation for these MCU subfamilies - not inferred from package similarity alone.

Does QB-64GB-NQ-01T require external power or voltage translation?

No. QB-64GB-NQ-01T is a passive adapter that derives VTREF and power signals directly from the IECUBE main unit via the NQ probe interface. It does not include regulators, level shifters, or isolation - all signal levels conform to RL78 core I/O specifications (1.8–5.5 V) and are managed by the host emulator, ensuring safe operation for QB-64GB-NQ-01T in standard development setups.

How does QB-64GB-NQ-01T differ from QB-64GB-YQ-01T or QB-64GB-HQ-01T?

QB-64GB-NQ-01T uses the NQ-series probe interface (20-pin header), while QB-64GB-YQ-01T uses YQ (14-pin), and QB-64GB-HQ-01T uses HQ (10-pin). These are mechanically and electrically distinct - they mate with different IECUBE probe modules and cannot be interchanged. All three share identical target-side FBGA interface but require matching probe hardware for QB-64GB-NQ-01T to function.

Is QB-64GB-NQ-01T still in active production and supported by Renesas?

Yes. Although the full IECUBE set was discontinued in May 2015, QB-64GB-NQ-01T remains an active, orderable part under Renesas' continued support for RL78 development tools. Renesas provides updated user manuals, compatibility matrices, and technical notes for QB-64GB-NQ-01T on its official developer portal and authorized distributor channels.