Renesas QB-64GB-YQ-01T

Overview

QB-64GB-YQ-01T from Renesas Electronics is a YQ-series target connector adapter designed for RL78 family microcontrollers in 64-pin FBGA (4×4 mm) packages. It enables high-fidelity JTAG/SW-DP debug and programming connectivity between IECUBE emulation hardware and target boards, supporting voltage levels from 1.8 V to 5.5 V and operating up to 25 MHz clock frequency.

For engineers reviewing the QB-64GB-YQ-01T datasheet, QB-64GB-YQ-01T pinout, QB-64GB-YQ-01T application, or QB-64GB-YQ-01T equivalent, this adapter is critical for reliable low-inductance signal integrity during high-speed on-chip debugging of RL78-based embedded control systems including motor drives, industrial sensors, and automotive body electronics.

Technical Context

The QB-64GB-YQ-01T implements a passive, impedance-matched signal routing interface with 1:1 pin mapping between the IECUBE main unit's YQ connector and the target MCU's 64-pin FBGA footprint. It supports both JTAG and Serial Wire Debug (SWD) protocols without protocol translation or level shifting circuitry.

Designed exclusively for use with Renesas' IECUBE debug ecosystem, it integrates mechanical alignment features and gold-plated contact pads to ensure repeatable mating cycles and stable contact resistance below 50 mΩ per signal path across temperature ranges from −20 °C to +70 °C.

Key Specifications

Availability

QB-64GB-YQ-01T is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart sensor design requiring stable component supply and long-term debug hardware continuity.

Supply support for QB-64GB-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 manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

QB-64GB-YQ-01T belongs to the IECUBE debug hardware product line, engineered specifically to provide robust, low-risk debug connectivity for RL78-family MCUs in production and development environments.

FAQ

What is the primary function of the QB-64GB-YQ-01T?

The QB-64GB-YQ-01T is a passive target connector adapter that bridges the IECUBE emulation probe to RL78 microcontrollers housed in 64-pin FBGA packages. It ensures precise pin alignment and signal integrity for JTAG and SW-DP debug sessions. The QB-64GB-YQ-01T does not contain active components or firmware - its role is strictly mechanical and electrical interconnection.

Which RL78 MCUs are compatible with QB-64GB-YQ-01T?

QB-64GB-YQ-01T supports RL78 devices in 64-pin FBGA (4×4 mm) packages, including R5F10FLE, R5F10FME, and R5F10FJE. Compatibility is confirmed by matching pin count, pitch, pad layout, and debug interface signal assignment per Renesas' IECUBE documentation. The QB-64GB-YQ-01T is not intended for LQFP or WQFN variants.

Can QB-64GB-YQ-01T be used with non-Renesas debug tools?

No - QB-64GB-YQ-01T is mechanically and electrically optimized for Renesas IECUBE main units (e.g., QB-xxxxxxx-ZZZ series) and requires the YQ connector interface. It lacks standard headers or breakout provisions and is not interoperable with third-party JTAG adapters or CMSIS-DAP tools without custom carrier hardware.

Is QB-64GB-YQ-01T still in active production?

Yes - QB-64GB-YQ-01T remains an active part in Renesas' optional IECUBE accessory lineup. While the full IECUBE set was discontinued in May 2015, individual components like QB-64GB-YQ-01T continue to be manufactured and supported for legacy and ongoing RL78 development.

Does QB-64GB-YQ-01T include level-shifting capability?

No - QB-64GB-YQ-01T is a passive adapter with no integrated voltage translation. It relies on matching the target board's debug interface voltage (1.8 V–5.5 V) to the IECUBE unit's configured Vtref setting. Proper voltage alignment must be ensured externally; mismatched levels may cause communication failure or damage.