Renesas QB-64GB-EA-04T

Overview

QB-64GB-EA-04T from Renesas Electronics is a socket adapter designed for RL78/G13 and RL78/L12 microcontrollers in 64-pin LQFP (10×10 mm) packages, enabling connection between the IECUBE debug emulator main unit (QB-RL78G13-ZZZ or QB-RL78L12-ZZZ) and target boards. It supports on-chip debugging via the dedicated RL78 on-chip debug interface and provides mechanical alignment, signal integrity preservation, and reliable ZIF contact for repeated insertion cycles.

For engineers reviewing the QB-64GB-EA-04T datasheet, QB-64GB-EA-04T pinout, QB-64GB-EA-04T application, or QB-64GB-EA-04T equivalent, this adapter is essential when developing with RL78-based MCUs requiring full-speed debug access, trace capability, and secure firmware programming without soldering or permanent board modification.

Technical Context

The QB-64GB-EA-04T implements a passive, zero-latency signal pass-through architecture with no active logic or voltage translation. It maps all 64 pins of the target LQFP package-including VDD, VSS, RESET, CLK, and debug-specific pins (BKGD, RES#)-to corresponding contacts on the IECUBE main unit's EA-series interface connector.

It is mechanically engineered to match the 0.5 mm pitch, 64-pin LQFP footprint and integrates precision-machined guide posts and spring-loaded ZIF contacts compliant with JEDEC MS-026 standard. The adapter requires no external power and operates across the full RL78 supply range (1.6–5.5 V).

Key Specifications

Availability

QB-64GB-EA-04T is available at Aetrix Electronics and suitable for embedded MCU development, industrial control prototyping, and automotive ECU validation requiring stable component supply, long-term toolchain continuity, and Renesas-qualified debug hardware.

Supply support for QB-64GB-EA-04T 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 automotive, industrial, and IoT applications.

QB-64GB-EA-04T belongs to the IECUBE ecosystem - a family of modular, MCU-specific debug adapters designed to simplify and accelerate firmware development for Renesas RL78 microcontroller platforms.

FAQ

What is the primary function of the QB-64GB-EA-04T adapter?

The QB-64GB-EA-04T is a passive socket adapter that bridges the Renesas IECUBE main emulator unit (e.g., QB-RL78G13-ZZZ) to 64-pin LQFP-packaged RL78/G13 and RL78/L12 microcontrollers. It enables full on-chip debugging - including breakpoints, register inspection, flash programming, and real-time trace - without soldering or custom PCB design. The QB-64GB-EA-04T ensures precise pin alignment, low-signal-integrity loss, and mechanical durability during repeated use.

Which Renesas MCUs are explicitly supported by QB-64GB-EA-04T?

QB-64GB-EA-04T is qualified for RL78/G13 devices such as R5F100LE, R5F100LG, and RL78/L12 devices including R5F10PLG - all in 64-pin LQFP (10×10 mm) packages. It is not compatible with WQFN, FBGA, or other LQFP variants (e.g., 12×12 mm or 14×14 mm). The adapter matches the JEDEC MO-220 VGGD-2 outline and is listed in Renesas' official RL78 optional product documentation for these specific MCU families.

Does QB-64GB-EA-04T require external power or configuration?

No. QB-64GB-EA-04T is a fully passive adapter with no active components, ICs, or firmware. It draws no power and requires no configuration, jumpers, or DIP switches. Signal integrity and debug functionality rely entirely on correct mechanical mating and native RL78 on-chip debug interface compliance. Power for the target MCU is supplied separately via the evaluation board or target system - QB-64GB-EA-04T does not source or regulate voltage.

Can QB-64GB-EA-04T be used with other IECUBE main units besides QB-RL78G13-ZZZ?

Yes - QB-64GB-EA-04T is mechanically and electrically compatible with any IECUBE main unit supporting the EA-series interface, including QB-RL78L12-ZZZ and QB-RL78G1A-ZZZ (when configured for 64-pin LQFP targets). It is not compatible with YQ-, NQ-, HQ-, or YS-series main units, which use different pinouts and connector types. Compatibility is defined by Renesas' IECUBE modular architecture documentation, not by generic pin count matching.

Is QB-64GB-EA-04T still in production and supported by Renesas?

Yes. Although Renesas discontinued the full IECUBE *set* in May 2015, QB-64GB-EA-04T remains an active, orderable part under Renesas' continued support for RL78 development tools. It is listed in current Renesas documentation as the designated EA-series adapter for 64-pin LQFP RL78/G13 and RL78/L12 devices, and Aetrix Electronics maintains inventory with full traceability and lifecycle coordination for ongoing production use.