Renesas QB-144FB-YQ-01T

Overview

QB-144FB-YQ-01T from Renesas Electronics is a YQ-type connector adapter designed for use with the QB-RL78F15 in-circuit emulator to interface with 144-pin FB (Fine Pitch Ball Grid Array) target devices such as the RL78/F15 microcontroller. It supports high-speed system clock emulation up to 20 MHz, internal RAM monitoring up to 61.75 KB, and real-time trace with 128K frame capacity. It enables secure mechanical and electrical connection between the QB-144FB-NQ-01T mount adapter and the QB-144FB-EA-01T exchange adapter in T-type configurations.

For engineers reviewing the QB-144FB-YQ-01T datasheet, QB-144FB-YQ-01T pinout, QB-144FB-YQ-01T application, or QB-144FB-YQ-01T equivalent, this adapter is critical for establishing reliable signal integrity and mechanical alignment in RL78/F15-based embedded development systems requiring precise debug probe integration, thermal-safe mounting, and height-adjustable space adaptation.

Technical Context

The QB-144FB-YQ-01T functions exclusively within Renesas' IECUBE ecosystem as a passive mechanical-electrical interface component. It mates with the QB-144FB-NQ-01T target connector on the target board side and the QB-144FB-EA-01T exchange adapter on the emulator side, forming part of the T-type socket configuration specified for 144FB package RL78/F15 devices.

It supports full-system debugging capabilities including real-time execution, memory/register manipulation, event break (8 points), software break (2000 points), and unconditional/qualify trace modes - all enabled through its role in maintaining stable physical interconnect integrity between emulator and target system under operating conditions of 0–40°C ambient temperature and 2.7–5.5 V supply voltage.

Key Specifications

Availability

QB-144FB-YQ-01T is available at Aetrix Electronics and suitable for RL78/F15-based automotive body control modules, industrial PLC I/O interfaces, smart meter firmware validation, and medical device microcontroller debugging requiring stable component supply and guaranteed mechanical compatibility with Renesas IECUBE toolchain.

Supply support for QB-144FB-YQ-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

QB-144FB-YQ-01T belongs to Renesas' IECUBE in-circuit emulator accessory product line, engineered specifically to enable robust, repeatable physical interfacing between high-pin-count RL78 microcontrollers and their dedicated emulation hardware.

FAQ

Is QB-144FB-YQ-01T compatible with non-RL78/F15 target devices?

No. QB-144FB-YQ-01T is mechanically and electrically designed only for the RL78/F15 in 144-pin FB package. Its pin pitch, mounting hole pattern, and mating interface geometry are specific to that device family and do not support other microcontrollers-even those with similar pin counts or package types. Using QB-144FB-YQ-01T with incompatible targets risks misalignment, contact failure, or damage to the QB-RL78F15 emulator system.

What accessories must be used alongside QB-144FB-YQ-01T to complete a functional T-type setup?

To form a complete T-type emulation chain, QB-144FB-YQ-01T must be used with QB-144FB-NQ-01T (target connector soldered to PCB), QB-144FB-EA-01T (exchange adapter), QB-144FB-YS-01T (space adapter for height adjustment), and QB-144FB-HQ-01T (mount adapter). All five components are required per Renesas' documented system configuration for 144FB RL78/F15 devices - omitting any breaks mechanical continuity or signal routing integrity.

Does QB-144FB-YQ-01T provide electrical signal conditioning or isolation?

No. QB-144FB-YQ-01T is a passive mechanical interposer with no active circuitry, resistors, capacitors, or isolation elements. It provides direct pin-to-pin connectivity only - all signal conditioning, voltage translation, and noise suppression must be handled by the QB-RL78F15 emulator unit itself or by the target board design. Its role is strictly structural alignment and low-impedance conduction path maintenance.

Can QB-144FB-YQ-01T be used with S-type emulation configurations?

No. QB-144FB-YQ-01T is explicitly designated for T-type configurations, as indicated by the "T" suffix in its part number and confirmed in Table 1-3 of the QB-RL78F15 User's Manual. S-type setups require different adapters (e.g., QB-48NA-TC-01S) and connectors with distinct mechanical profiles - attempting to force QB-144FB-YQ-01T into an S-type chain will result in physical incompatibility and connection failure.

What is the maximum operating temperature limit for QB-144FB-YQ-01T during active debugging?

QB-144FB-YQ-01T is rated for continuous operation within 0 to 40°C ambient temperature, matching the QB-RL78F15 emulator's specified operating range. Exceeding 40°C may compromise solder joint reliability on the target board's QB-144FB-NQ-01T connector or cause thermal expansion mismatch leading to intermittent contact - especially during extended real-time trace sessions generating elevated local heat near the YQ interface.