Renesas QB-44GB-NQ-01T

Overview

QB-44GB-NQ-01T from Renesas Electronics is a target connector designed for use with the QB-78K0RIX3 in-circuit emulator to interface with 44-pin QFP-packaged 78K0R/KC3-L, 78K0R/IC3, and 78K0R/ID3 microcontrollers. It provides mechanical and electrical connection between the emulation probe and the target board, supports 1.8–5.5 V operation, maintains signal integrity for real-time debugging, and is rated for 0–40°C operating temperature.

For engineers reviewing the QB-44GB-NQ-01T datasheet, QB-44GB-NQ-01T pinout, QB-44GB-NQ-01T application, or QB-44GB-NQ-01T equivalent, this component is critical for establishing reliable debug connectivity in 78K0R-based embedded development-especially when validating timing-sensitive execution, memory access trace, or register-level control during firmware bring-up.

Technical Context

The QB-44GB-NQ-01T is a passive, surface-mount solderable connector used exclusively as part of the QB-78K0RIX3 emulator system. It mates with the QB-44GB-YQ-01T YQ connector and interfaces directly with the target device's 44-pin QFP footprint, preserving pin-to-pin signal routing for all debug signals including RESET, CLK, and trace data lines.

It is specified for use only with 78K0R/Kx3-L and 78K0R/Ix3 families, supports high-speed system clock operation up to 20 MHz (at VDD ≥ 2.7 V), and complies with Renesas' Standard quality grade for industrial and office equipment applications.

Key Specifications

Availability

QB-44GB-NQ-01T is available at Aetrix Electronics and suitable for embedded firmware development, microcontroller debug infrastructure, and production validation requiring stable component supply for Renesas 78K0R-based designs.

Supply support for QB-44GB-NQ-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 manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and SoC solutions.

QB-44GB-NQ-01T belongs to the IECUBE in-circuit emulator accessory product line, engineered specifically to enable high-fidelity, real-time debugging of Renesas 78K0R microcontrollers in development labs and engineering validation environments.

FAQ

What is the primary function of the QB-44GB-NQ-01T in the QB-78K0RIX3 emulator system?

The QB-44GB-NQ-01T is a 44-pin target connector that provides a soldered, low-inductance interface between the QB-78K0RIX3 emulator and 44-pin QFP-packaged 78K0R microcontrollers. It ensures accurate signal transmission for debug functions like real-time execution, memory access trace, and register manipulation-critical for validating firmware behavior on QB-44GB-NQ-01T-compatible target boards.

Which microcontroller families are explicitly supported by the QB-44GB-NQ-01T according to official documentation?

According to Renesas' QB-78K0RIX3 User's Manual (U19228EJ1V0UM), the QB-44GB-NQ-01T is designated for use with the 78K0R/KC3-L, 78K0R/IC3, and 78K0R/ID3 microcontroller families. These devices share the same 44-pin QFP package and debug interface architecture required for QB-44GB-NQ-01T compatibility.

Does the QB-44GB-NQ-01T include any active circuitry or signal conditioning?

No, the QB-44GB-NQ-01T is a passive, mechanical connector with no active components, ICs, or signal conditioning. It serves solely as a precision-mated, soldered interconnect between the QB-44GB-YQ-01T YQ connector and the target MCU's 44-pin QFP footprint-preserving signal integrity without buffering, level-shifting, or impedance matching circuitry.

Can the QB-44GB-NQ-01T be used with microcontrollers outside the 78K0R family?

No-Renesas documentation restricts QB-44GB-NQ-01T usage to the 78K0R/Kx3-L and 78K0R/Ix3 families. Its pinout, signal assignment, and mechanical design are optimized exclusively for those devices. Using it with non-78K0R MCUs risks misalignment, incorrect debug signal routing, or failure to establish emulator communication, as confirmed in Table 1-3 of the QB-78K0RIX3 manual.

Is the QB-44GB-NQ-01T RoHS-compliant and suitable for modern PCB assembly processes?

Yes, QB-44GB-NQ-01T complies with EU RoHS Directive requirements, as confirmed by Renesas' environmental compliance statements. It is designed for standard SMT reflow assembly (per IPC-7351) and supports lead-free soldering profiles-making it compatible with modern high-volume PCB manufacturing and environmentally regulated product development.