Renesas QB-52FA-EA-02T

Overview

QB-52FA-EA-02T from Renesas Electronics is an exchange adapter designed for the QB-RL78L12 in-circuit emulator, enabling physical pin conversion between the emulator's YQ connector and the RL78/L12 52-pin FA package target device. It supports 1.6–5.5 V operation, operates within 0–40°C ambient, and is rated for ≤250 mA target system power draw. Used with QB-52FA-YQ-01T and QB-52FA-NQ-01T to establish debug connectivity for RL78/L12-based embedded control systems.

For engineers reviewing the QB-52FA-EA-02T datasheet, QB-52FA-EA-02T pinout, QB-52FA-EA-02T application, or QB-52FA-EA-02T equivalent, this adapter enables reliable JTAG/SW-DP signal routing, maintains signal integrity across 20 MHz system clock domains, ensures mechanical alignment for 0.5 mm pitch 52-pin FA packages, and integrates into Renesas' standardized IECUBE probe stack for RL78/L12 firmware development and real-time RAM monitoring.

Technical Context

This adapter is a passive mechanical and electrical interface component-not an active IC-designed exclusively for the QB-RL78L12 emulator platform. It maps QB-52FA-YQ-01T's 100-pin FPC interface to the 52-pin fine-pitch LQFP (FA) footprint of the RL78/L12 microcontroller, preserving all debug signals including TCK, TMS, TDI, TDO, TRST, and SWDIO/SWCLK.

No voltage translation, buffering, or timing compensation is implemented. Signal routing follows Renesas' defined trace length matching and impedance control guidelines per the QB-RL78L12 hardware specification, supporting real-time execution and trace capture at up to 120 MHz internal measurement clock rates when used in full system configuration.

Key Specifications

Availability

QB-52FA-EA-02T is available at Aetrix Electronics and suitable for RL78/L12-based motor control, industrial HMI, and low-power sensor node development requiring stable component supply, consistent mechanical fit, and guaranteed signal integrity in production debug environments.

Supply support for QB-52FA-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 global semiconductor manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

QB-52FA-EA-02T belongs to the IECUBE™ in-circuit emulator accessory product line, engineered specifically to extend QB-RL78L12 compatibility to RL78/L12 devices in 52-pin FA packages while maintaining Renesas' certified debug signal fidelity and mechanical reliability standards.

FAQ

What is the primary function of the QB-52FA-EA-02T?

The QB-52FA-EA-02T is a passive exchange adapter that bridges the QB-RL78L12 emulator's YQ connector to the 52-pin FA package of the RL78/L12 microcontroller. It performs no signal conditioning or logic translation-its sole role is precise pin-to-pin mapping and mechanical alignment. The QB-52FA-EA-02T ensures correct routing of JTAG and SWD debug signals while maintaining impedance-controlled trace lengths as specified in the QB-RL78L12 hardware manual.

Is QB-52FA-EA-02T compatible with other Renesas emulators besides QB-RL78L12?

No-QB-52FA-EA-02T is mechanically and electrically designed only for use with the QB-RL78L12 in-circuit emulator. Its input interface matches the QB-52FA-YQ-01T YQ connector, which is unique to the QB-RL78L12 platform. It is not compatible with older IECUBE models (e.g., QB-R5F100LE), E2 or E2 Lite debuggers, or third-party emulators due to proprietary pinout, pitch, and mounting constraints defined in Renesas' QB-RL78L12 system configuration documentation.

Does QB-52FA-EA-02T require firmware, drivers, or configuration?

No-QB-52FA-EA-02T is a purely passive hardware adapter with no embedded circuitry, memory, or programmable elements. It requires no firmware, drivers, or software configuration. Once physically assembled with QB-52FA-YQ-01T and QB-52FA-NQ-01T, the QB-52FA-EA-02T functions transparently within the QB-RL78L12 debug chain. All configuration-including clock settings and trace parameters-is handled by the host debugger software and QB-RL78L12 hardware, not the QB-52FA-EA-02T.

Can QB-52FA-EA-02T be used with RL78/L12 devices in packages other than 52-pin FA?

No-QB-52FA-EA-02T is dimensionally and electrically specific to the 52-pin FA (Fine Pitch LQFP) package of the RL78/L12. It is not interchangeable with adapters for 32FP, 44FP, 48FB, 64FA, or 64FB packages. Table 1-3 in the QB-RL78L12 User's Manual explicitly lists QB-52FA-EA-02T only under the "52FA" row and confirms no cross-package compatibility. Using it with mismatched packages risks misalignment, open circuits, or shorted pins.

What accessories must be used alongside QB-52FA-EA-02T for full functionality?

QB-52FA-EA-02T requires two mandatory companion components: QB-52FA-YQ-01T (YQ connector) to interface with the QB-RL78L12 base unit, and QB-52FA-NQ-01T (target connector) to mount onto the RL78/L12 target board. An emulation probe (QB-80-EP-01T) and space adapter (QB-52FA-YS-01T) may also be needed depending on mechanical clearance. These are listed together in the "Products supplied with QB-RL78L12-T52FA" section of the manual and are not optional for functional debug setup.