Renesas QB-44GB-YQ-01T

Overview

QB-44GB-YQ-01T from Renesas Electronics is a YQ-series target connector adapter designed for in-circuit emulation of 78K0R/Kx3-L and 78K0R/Ix3 microcontrollers in the QB-78K0RIX3 emulator system. It provides mechanical and electrical interface compatibility between the QB-78K0RIX3 emulation probe and 44-pin GB-package target devices (e.g., μPD78F1007/1008/1009), supporting 1.8–5.5 V operation and real-time debugging at up to 20 MHz system clock frequency.

For engineers reviewing the QB-44GB-YQ-01T datasheet, QB-44GB-YQ-01T pinout, QB-44GB-YQ-01T application, or QB-44GB-YQ-01T equivalent, this adapter enables reliable signal integrity during high-speed trace capture, supports fail-safe break conditions (SFR illegal access, stack overflow), and integrates with space adapters (QB-44GB-YS-01T) and exchange adapters (QB-44GB-EA-04T) for flexible target board mounting.

Technical Context

The QB-44GB-YQ-01T serves as a fixed-pitch, zero-insertion-force (ZIF)-compatible interface bridge between the QB-78K0RIX3's emulation probe and 44-pin GB-package 78K0R microcontrollers. It maintains full electrical continuity for all debug signals-including TRST, TCK, TDI, TDO, TMS, RESET, VDD, VSS, and AVREF-while preserving timing integrity for real-time execution and trace functions operating at up to 60 MHz measurement clock rate.

This adapter is mechanically engineered to align with the QB-44GB-NQ-01T target connector soldered onto the user's PCB and mates precisely with the QB-44GB-EA-04T exchange adapter. Its design ensures stable GND referencing and minimizes noise coupling during high-frequency emulation, critical for accurate breakpoint triggering and memory/register manipulation in ID78K0R-QB debugger environments.

Key Specifications

Availability

QB-44GB-YQ-01T is available at Aetrix Electronics and suitable for embedded microcontroller development, production-level firmware validation, and automotive ECU prototyping requiring stable component supply and long-term emulator toolchain continuity.

Supply support for QB-44GB-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 global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT applications.

QB-44GB-YQ-01T belongs to the IECUBE in-circuit emulator accessory product line, engineered specifically to enable robust, high-fidelity debugging of Renesas' 78K0R family microcontrollers in real-world hardware environments.

FAQ

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

The QB-44GB-YQ-01T is a YQ-series mechanical interface adapter that electrically and physically connects the QB-78K0RIX3 emulation probe to 44-pin GB-package 78K0R microcontrollers (e.g., μPD78F1007/1008/1009). It ensures signal fidelity for JTAG/OCD communication, supports real-time trace and breakpoint functions, and enables secure, low-noise connection without soldering or permanent modification to the target board. The QB-44GB-YQ-01T must be used with QB-44GB-NQ-01T (target connector) and QB-44GB-EA-04T (exchange adapter) to complete the debug chain.

Which target microcontrollers are supported by QB-44GB-YQ-01T?

QB-44GB-YQ-01T is explicitly designated for 44-pin GB-package variants of the 78K0R/Kx3-L and 78K0R/Ix3 families, including μPD78F1007, μPD78F1008, and μPD78F1009. It is listed in Table 1-3 of the QB-78K0RIX3 User's Manual (U19228EJ1V0UM) as the required YQ connector for "44GB" target devices. It does not support GA, GK, F1, MC, or other package types-even if pin count matches-due to mechanical and pad layout differences.

Does QB-44GB-YQ-01T require external power or configuration?

No, QB-44GB-YQ-01T is a passive mechanical and electrical interface adapter with no active components, firmware, or configuration settings. It draws no power and requires no setup-it functions solely as a signal-passive bridge between the QB-78K0RIX3 probe and the target board's QB-44GB-NQ-01T connector. All power, clock, and debug logic are supplied and controlled by the QB-78K0RIX3 unit and target system; QB-44GB-YQ-01T preserves voltage levels (1.8–5.5 V) and signal timing without translation or buffering.

Can QB-44GB-YQ-01T be used with non-Renesas microcontrollers?

No. QB-44GB-YQ-01T is engineered exclusively for Renesas' 78K0R/Kx3-L and 78K0R/Ix3 microcontrollers in 44-pin GB packages. Its pinout, pitch, and signal mapping (including dedicated OCD pins like TRST, AVREF, and SFR-access paths) are defined by Renesas' IECUBE debug architecture and are not interoperable with generic ARM Cortex-M, PIC, or other vendor debug interfaces. Using it with non-78K0R devices risks signal misalignment, damage, or undefined behavior.

Is QB-44GB-YQ-01T RoHS compliant and qualified for industrial use?

Yes. As a Renesas Electronics product released under document U19228EJ1V0UM (April 2008) and covered by the April 2010 merger transition notice, QB-44GB-YQ-01T conforms to EU RoHS Directive requirements and carries "Standard" quality grade per Renesas' classification-certified for use in industrial robots, test/measurement equipment, and office/communications systems. It operates reliably across 0–40°C and meets Renesas' mechanical durability and GND isolation specifications for long-term debug station deployment.