Renesas QB-128FB-EA-02T

Overview

QB-128FB-EA-02T from Renesas Electronics is a 128-pin exchange adapter designed for use with the QB-RL78D1A2 in-circuit emulator to interface with RL78/D1A target devices in 128FB package, supporting high-speed system clock emulation up to 20 MHz, internal oscillator clocking at 4–32 MHz, and subsystem clock at 32.768 kHz for debugging R5F10DSL/R5F10DSK/R5F10DSJ microcontrollers in industrial embedded systems.

For engineers reviewing the QB-128FB-EA-02T datasheet, QB-128FB-EA-02T pinout, QB-128FB-EA-02T application, or QB-128FB-EA-02T equivalent, this adapter enables reliable physical and electrical signal translation between the QB-RL78D1A2 emulator and 128-pin FB-package RL78/D1A MCUs during real-time execution, memory manipulation, and trace-based firmware validation.

Technical Context

The QB-128FB-EA-02T serves as a mechanical and electrical bridge between the QB-RL78D1A2 emulator base unit and target RL78/D1A devices in 128-pin fine-pitch ball grid array (FB) packaging. It routes all debug signals-including reset, clock inputs (X1/X2), SWD/JTAG pins, power, and ground-while maintaining signal integrity for real-time trace capture at up to 120 MHz measurement clock resolution.

This adapter supports configurable clock sourcing modes: internal emulator-generated clock, external square-wave input from target board, or oscillator-mounted operation via OSC1 socket on QB-RL78D1A2. It operates within 2.4 V to 5.5 V supply range and is rated for 0°C to 40°C ambient temperature during active debugging sessions.

Key Specifications

Availability

QB-128FB-EA-02T is available at Aetrix Electronics and suitable for industrial control HMI development, automotive ECU prototyping, and smart sensor firmware validation requiring stable component supply across multi-year embedded design cycles.

Supply support for QB-128FB-EA-02T 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-128FB-EA-02T belongs to the IECUBE™ family of high-performance in-circuit emulators and adapters, engineered specifically to enable full-featured, real-time debugging of RL78 microcontroller-based systems without requiring target board modification.

FAQ

What is the primary function of the QB-128FB-EA-02T?

The QB-128FB-EA-02T is a dedicated exchange adapter that enables the QB-RL78D1A2 in-circuit emulator to interface with RL78/D1A microcontrollers housed in 128-pin FB packages. It provides precise pin mapping, signal conditioning, and mechanical alignment between the emulator's YQ connector and the target device's NQ connector, ensuring reliable debug communication during real-time execution and trace analysis. The QB-128FB-EA-02T does not contain active circuitry but is essential for physical and electrical compatibility.

Which RL78/D1A devices are supported by QB-128FB-EA-02T?

QB-128FB-EA-02T is explicitly validated for R5F10DSL, R5F10DSK, and R5F10DSJ microcontrollers - all packaged in the 128FB format. These devices share identical pinouts and debug interface definitions per Renesas' QB-RL78D1A2 User's Manual Rev.1.01. The adapter is not compatible with 100FB-package variants like R5F10DPL or R5F10DPK, which require the QB-100FB-EA-02T instead.

Does QB-128FB-EA-02T include onboard clock generation or signal conditioning?

No, QB-128FB-EA-02T is a passive mechanical and routing adapter with no active components, oscillators, or signal conditioning circuitry. Clock signals (X1/X2), debug lines (SWDIO/SWCLK), power, and ground are routed directly through precision-machined contacts. All timing and signal integrity depend on the QB-RL78D1A2 emulator unit and target board design - the QB-128FB-EA-02T ensures correct pin-to-pin connectivity without altering electrical characteristics.

How does QB-128FB-EA-02T integrate into the full QB-RL78D1A2 debugging system?

QB-128FB-EA-02T mounts between the QB-128FB-YQ-01T YQ connector (attached to QB-RL78D1A2) and the QB-128FB-NQ-01T target connector (soldered to the user's PCB). It works in conjunction with the QB-128FB-YS-01T space adapter for height adjustment and the QB-128FB-HQ-01T mount adapter if socket-based target device insertion is required. This modular stack ensures mechanical stability and signal fidelity during extended debug sessions.

Is QB-128FB-EA-02T RoHS compliant and suitable for industrial applications?

Yes, QB-128FB-EA-02T complies with EU RoHS Directive requirements as part of the broader IECUBE™ product line. Renesas specifies "Standard" quality grade for QB-RL78D1A2 and associated adapters, authorizing use in industrial robots, test and measurement equipment, and factory automation systems - but not in safety-critical transportation or medical applications. Full environmental compliance documentation is available through Renesas sales offices.