Renesas QB-25LA-EA-02T

Overview

QB-25LA-EA-02T from Renesas Electronics is an exchange adapter designed for in-circuit emulation of the RL78/G1A microcontroller in 25-pin LGA (Land Grid Array) packages. It enables physical pin conversion between the QB-RL78G1A emulator and target systems using the R5F10E8 device, supports T-type socket interface, and provides reliable signal integrity during debug sessions on industrial embedded designs.

For engineers reviewing the QB-25LA-EA-02T datasheet, QB-25LA-EA-02T pinout, QB-25LA-EA-02T application, or QB-25LA-EA-02T equivalent, this adapter is essential for establishing mechanical and electrical compatibility between the QB-RL78G1A emulator and 25LA-package RL78/G1A targets - particularly when integrating with QB-25LA-NQ-01T target connectors and QB-80-EP-01T emulation probes.

Technical Context

The QB-25LA-EA-02T serves exclusively as a passive mechanical and electrical interface bridge - it contains no active circuitry, ICs, or silicon. Its function is strictly to remap pin assignments between the QB-RL78G1A's standard output interface and the 25-pin LGA footprint of the R5F10E8 microcontroller.

It is used only in T-type configurations, mates directly with the QB-25LA-NQ-01T target connector, and requires no power, clocking, or firmware. Signal routing follows Renesas' defined pin mapping for RL78/G1A 25LA package emulation, preserving debug signal integrity including RESET, CLK, VDD, VSS, and trace/debug I/O lines.

Key Specifications

Availability

QB-25LA-EA-02T is available at Aetrix Electronics and suitable for RL78/G1A-based industrial control, sensor node development, and low-power embedded applications requiring stable component supply and full debugger interoperability.

Supply support for QB-25LA-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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

QB-25LA-EA-02T belongs to the IECUBE™ in-circuit emulator accessory product line, engineered specifically to extend QB-RL78G1A debugging capability to RL78/G1A devices in compact 25-pin LGA packages.

FAQ

Is QB-25LA-EA-02T an active electronic component or IC?

No, QB-25LA-EA-02T is a passive exchange adapter - it contains no semiconductor die, power pins, or active circuitry. It functions solely as a precision-machined, plated-through-hole interposer that maps pin locations between the QB-RL78G1A emulator and the 25-pin LGA footprint of the R5F10E8 microcontroller. QB-25LA-EA-02T requires no voltage, ground, or configuration.

Which target connector must be used with QB-25LA-EA-02T?

QB-25LA-EA-02T must be used exclusively with QB-25LA-NQ-01T - the designated T-type target connector for 25LA-package RL78/G1A devices. This pairing ensures correct mechanical registration, solder pad alignment, and signal path continuity. Using any other connector (e.g., TC-series S-type) will result in misalignment and debug failure.

Can QB-25LA-EA-02T be used with non-RL78/G1A microcontrollers?

No. QB-25LA-EA-02T is mechanically and electrically validated only for the R5F10E8 device in the 25-pin LGA package (25LA), part of the RL78/G1A family. Its pin mapping, spacing, and debug signal routing are fixed per Renesas' QB-RL78G1A system specification - no cross-family or generic use is supported or guaranteed.

Does QB-25LA-EA-02T require firmware, drivers, or software configuration?

No. QB-25LA-EA-02T is a hardware-only adapter with no embedded logic, memory, or programmable elements. It introduces no latency, timing skew, or protocol translation. Configuration is handled entirely by the QB-RL78G1A emulator and CubeSuite+ IDE - QB-25LA-EA-02T itself needs no setup, calibration, or driver installation.

What is the recommended reflow profile for soldering QB-25LA-EA-02T onto a target PCB?

QB-25LA-EA-02T is not soldered directly to the PCB - it mounts onto the QB-25LA-NQ-01T target connector, which is surface-mounted. The NQ connector's reflow profile specifies peak temperature ≤235°C for ≤10 seconds (main heating phase). QB-25LA-EA-02T attaches mechanically to the NQ connector post-soldering and must never undergo reflow.