Renesas QB-44FP-EA-02T

Overview

QB-44FP-EA-02T from Renesas Electronics is an exchange adapter designed for the QB-RL78L12 in-circuit emulator, enabling physical interface conversion between the emulator's YQ connector and the 44-pin flat package (44FP) RL78/L12 target device. It supports 1.6–5.5 V operation, maintains signal integrity for real-time debugging, and is used with QB-44FP-YQ-01T and QB-44FP-NQ-01T to establish reliable probe-to-target connection in embedded firmware development.

For engineers reviewing the QB-44FP-EA-02T datasheet, QB-44FP-EA-02T pinout, QB-44FP-EA-02T application, or QB-44FP-EA-02T equivalent, this adapter is essential for RL78/L12-based debug setups requiring mechanical compatibility, voltage-level alignment, and trace-signal fidelity during non-intrusive emulation of flash programming, register inspection, and breakpoint execution.

Technical Context

The QB-44FP-EA-02T is a passive mechanical and electrical interface adapter - not an active IC - that maps the QB-RL78L12 emulator's YQ connector pinout to the 44FP package footprint of the RL78/L12 microcontroller. It preserves all debug signals including RESET, CLK, SWDIO, SWCLK, and power/ground lines without buffering or level-shifting.

It is explicitly designated for T-type socket configuration per Renesas documentation, requires pairing with QB-44FP-YQ-01T (YQ connector) and QB-44FP-NQ-01T (target connector), and operates within the same 0–40°C ambient range and 1.6–5.5 V supply envelope as the QB-RL78L12 system.

Key Specifications

Availability

QB-44FP-EA-02T is available at Aetrix Electronics and suitable for RL78/L12-based embedded development, firmware validation, and production programming workflows requiring stable component supply and guaranteed Renesas-compatible toolchain interoperability.

Supply support for QB-44FP-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT applications.

QB-44FP-EA-02T belongs to Renesas' IECUBE™ in-circuit emulator accessory product line, engineered specifically to extend debugger compatibility across RL78 family package variants while preserving signal timing and debug session reliability.

FAQ

Is QB-44FP-EA-02T an active electronic component or a passive adapter?

QB-44FP-EA-02T is a passive mechanical and electrical interface adapter - it contains no active circuitry, ICs, or power requirements. Its function is strictly pin mapping and physical interconnection between the QB-RL78L12 emulator and the 44FP-packaged RL78/L12 target device. QB-44FP-EA-02T relies entirely on the host emulator for signal drive and timing control.

Which QB-RL78L12 configurations require QB-44FP-EA-02T?

QB-44FP-EA-02T is required when using the QB-RL78L12 with RL78/L12 devices in 44-pin flat package (44FP) form, specifically in T-type socket systems. It must be used together with QB-44FP-YQ-01T (YQ connector) and QB-44FP-NQ-01T (target connector) to complete the debug chain. QB-44FP-EA-02T is not compatible with S-type socket variants.

Does QB-44FP-EA-02T support voltage level translation between QB-RL78L12 and the target?

No, QB-44FP-EA-02T does not perform voltage level translation. It is a direct-conduction adapter designed for use within the shared 1.6–5.5 V operating range of both the QB-RL78L12 emulator and the RL78/L12 target. System-level voltage compatibility must be ensured externally - QB-44FP-EA-02T assumes matched VDD/VSS domains and passes signals without conditioning.

Can QB-44FP-EA-02T be used with other Renesas emulators besides QB-RL78L12?

No - QB-44FP-EA-02T is uniquely specified for use with the QB-RL78L12 in-circuit emulator. Its pinout, mechanical interface, and signal routing are optimized exclusively for that platform and the RL78/L12 44FP target. It is not cross-compatible with IECUBE variants for other families (e.g., RX, RH850) or third-party debug tools.

What happens if QB-44FP-EA-02T is used without the配套 YQ and NQ connectors?

QB-44FP-EA-02T cannot function standalone - it requires QB-44FP-YQ-01T to interface with the QB-RL78L12 emulator and QB-44FP-NQ-01T to attach to the target board. Omitting either results in incomplete signal routing, floating pins, or mechanical misalignment, leading to failed debug sessions, communication timeouts, or unreliable breakpoint behavior in QB-44FP-EA-02T-dependent setups.