Renesas QB-64GB-HQ-01T

Overview

QB-64GB-HQ-01T from Renesas Electronics is a high-quality emulation probe adapter designed for RL78 family microcontrollers in 64-pin FBGA (4×4 mm) packages. It enables secure, low-inductance JTAG/SWJ debugging and programming of target devices such as R5F10GK, R5F10GB, and R5F10GC series MCUs. The adapter supports HQ connector interface and integrates signal integrity enhancements for stable high-speed debug sessions in industrial embedded development.

For engineers reviewing the QB-64GB-HQ-01T datasheet, QB-64GB-HQ-01T pinout, QB-64GB-HQ-01T application, or QB-64GB-HQ-01T equivalent, this product serves as a critical link between IECUBE main units and RL78-based target boards - especially where FBGA-packaged MCUs require reliable, low-profile, high-fidelity debug connectivity without socket wear or contact resistance issues.

Technical Context

The QB-64GB-HQ-01T implements a passive, impedance-matched signal path optimized for Renesas' standard SWJ (Serial Wire JTAG) protocol at up to 10 MHz. It maps all essential debug pins - including TCK, TMS, TDI, TDO, nTRST, and SWO - while preserving voltage-level compatibility (1.8 V to 5.5 V) with RL78 MCU I/O domains.

Designed specifically for use with HQ-series target connectors and IECUBE main units (e.g., QB-RL78G13-ZZZ), it avoids active logic or level-shifting circuitry, relying instead on precision-machined contacts and gold-plated terminals to ensure repeatable mating cycles and minimal signal skew across all 64 pins.

Key Specifications

Availability

QB-64GB-HQ-01T is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and consumer appliance development requiring stable component supply, long-term debug hardware availability, and consistent RL78 ecosystem interoperability.

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

QB-64GB-HQ-01T belongs to the IECUBE ecosystem - a dedicated line of debug adapters engineered to provide robust, standardized, and maintenance-free JTAG/SWJ connectivity for RL78 MCU evaluation and production programming workflows.

FAQ

What is the primary function of the QB-64GB-HQ-01T?

The QB-64GB-HQ-01T is a passive emulation probe adapter that bridges Renesas IECUBE debug units to RL78 microcontrollers in 64-pin FBGA packages. It ensures precise, low-noise SWJ signal transmission for programming and real-time debugging. Unlike active probes, QB-64GB-HQ-01T contains no ICs or power requirements - its performance relies entirely on mechanical precision and contact metallurgy. This makes QB-64GB-HQ-01T ideal for repeatable lab validation and factory programming setups.

Which RL78 MCUs are explicitly supported by QB-64GB-HQ-01T?

QB-64GB-HQ-01T is validated for RL78 devices using the "GB" suffix in their part numbering - specifically R5F10GK, R5F10GB, and R5F10GC series MCUs in 64-pin FBGA packages. These include variants like R5F10GKLEFP, R5F10GBLEFP, and R5F10GCLEFP. Support is confirmed via Renesas' official IECUBE optional product list and matching socket pack references (e.g., HQPACK064SD).

Can QB-64GB-HQ-01T be used with non-Renesas debuggers?

No - QB-64GB-HQ-01T is mechanically and electrically designed exclusively for integration with Renesas IECUBE main units (e.g., QB-RL78G13-ZZZ) and HQ-series target connectors. Its pin pitch, keying, and signal mapping follow Renesas proprietary mechanical specs. Attempting use with third-party debuggers risks misalignment, contact damage, or incorrect signal routing. QB-64GB-HQ-01T must be paired only with certified Renesas hardware to guarantee functional and electrical compliance.

Is QB-64GB-HQ-01T compatible with the discontinued IECUBE set?

Yes - QB-64GB-HQ-01T remains fully compatible with legacy IECUBE main units, even though the full IECUBE set was discontinued in May 2015. Renesas explicitly states that users should purchase the main unit (e.g., QB-xxxxxxx-ZZZ), socket, and adapters like QB-64GB-HQ-01T separately. QB-64GB-HQ-01T's mechanical and electrical design has not changed since its introduction and continues to meet original IECUBE system specifications.

Does QB-64GB-HQ-01T require firmware or driver updates?

No - QB-64GB-HQ-01T is a passive hardware adapter with no embedded firmware, memory, or programmable logic. It requires no drivers, configuration, or host-side software updates. Once physically mated between an IECUBE main unit and a target board with an HQ connector, QB-64GB-HQ-01T operates transparently. All debug protocol handling is performed by the IECUBE unit and host PC tools (e.g., CS+ or e2 studio), not by QB-64GB-HQ-01T itself.