Renesas QB-RL78G14-ZZZ

Overview

QB-RL78G14-ZZZ from Renesas Electronics is an in-circuit emulator (ICE) designed exclusively for real-time debugging of RL78/G14 microcontrollers. It supports full-speed execution, 8-point event break, 2000 software breakpoints, 128K-frame trace memory, and real-time RAM monitoring across all internal RAM spaces. It interfaces via USB 1.1/2.0 to Windows-based host PCs and powers target systems at 1.6–5.5 V.

For engineers reviewing the QB-RL78G14-ZZZ datasheet, QB-RL78G14-ZZZ pinout, QB-RL78G14-ZZZ application, or QB-RL78G14-ZZZ equivalent, this page delivers verified hardware specifications, system-level debug capabilities, target interface configurations (S/T Type), clock sourcing options (internal oscillator, external square wave, or OSC1 socket), and OEM supply support - all specific to the QB-RL78G14-ZZZ base configuration without bundled adapters.

Technical Context

The QB-RL78G14-ZZZ implements a high-fidelity emulation architecture that mirrors RL78/G14 on-chip debug functionality while decoupling timing control from the target board. It provides independent clock generation (up to 32 MHz typical high-speed system clock) and supports three clock sourcing modes: internally generated, externally supplied square wave (X2 pin), or oscillator mounted in OSC1 socket - with no resonator-based oscillation emulation.

Its system-level debug engine delivers real-time execution (Go, Start from Here, Come Here), non-real-time stepping (Step In, Next Over), memory/register manipulation (SFRs, general-purpose registers), disassembly, local/global variable watch, stack trace, and configurable trace (unconditional, section, qualify, delay trigger) with 8 ns minimum resolution and up to ~40.7 hours maximum measurement time.

Key Specifications

Availability

QB-RL78G14-ZZZ is available at Aetrix Electronics and suitable for embedded firmware development, automotive ECU validation, industrial controller bring-up, and IoT device certification requiring stable component supply and long-term toolchain continuity.

Supply support for QB-RL78G14-ZZZ 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, power, and SoC solutions for automotive, industrial, and enterprise applications.

The QB-RL78G14-ZZZ belongs to Renesas' IECUBE in-circuit emulator product line, engineered specifically to provide high-fidelity, real-time debug visibility for RL78-family MCUs during firmware development and system integration.

FAQ

What is the QB-RL78G14-ZZZ and how does it differ from standard debug probes?

The QB-RL78G14-ZZZ is a dedicated in-circuit emulator (ICE) - not a debug probe - built for full real-time emulation of RL78/G14 MCUs. Unlike JTAG/SWD debuggers, it replaces the target MCU with an emulation core that mirrors internal behavior, enabling non-intrusive trace, fail-safe breakpoints, and real-time RAM monitoring. QB-RL78G14-ZZZ supports 128K-frame trace and 2000 software breakpoints, features unavailable in basic debug adapters.

Does the QB-RL78G14-ZZZ include target connectors or adapters in its base configuration?

No. The QB-RL78G14-ZZZ base configuration includes only the emulator unit, USB interface cable (2 m), accessory disk (CD-ROM), online registration card, and packing list - per Section 1.6 of the User's Manual. Adapters (e.g., QB-30SP-EA-03T), probes (e.g., QB-80-EP-01T), and target connectors are orderable separately or bundled under variant part numbers like QB-RL78G14-T30SP. QB-RL78G14-ZZZ itself contains no soldered or integrated target-side hardware.

Can the QB-RL78G14-ZZZ emulate resonator-based clock circuits on the target board?

No. As explicitly stated in Section 2.2 of the User's Manual, "Oscillation with the resonator on the target system is not supported. Therefore, the in-circuit emulator cannot emulate the oscillation operation of the clock on the target system." QB-RL78G14-ZZZ supports only three clock sources: internally generated (via emulator logic), externally supplied square wave (to X2 pin), or oscillator mounted in the OSC1 socket - all requiring active clock input or CMOS oscillator.

What are the physical dimensions and thermal characteristics of the QB-RL78G14-ZZZ?

The QB-RL78G14-ZZZ measures 112 mm × 108 mm × 58 mm (excluding projections), weighs approximately 400 g, and operates within 0–40°C ambient temperature. Its cooling fan activates automatically when powered and may reach surface temperatures of 50–60°C during extended use - requiring adequate airflow and caution against low-temperature burns, as noted in Section 1 of the General Precautions.

Which software environment is required to use the QB-RL78G14-ZZZ?

QB-RL78G14-ZZZ requires Renesas' CubeSuite+ Integrated Development Environment (IDE), referenced in Section 1.3 of the User's Manual (Document No. R20UT0727E). Debug functions - including breakpoint setup, trace configuration, register/memory view, and clock selection - are controlled through CubeSuite+; the QB-RL78G14-ZZZ itself has no standalone GUI or firmware update interface. Legacy HEW support is discontinued per Renesas documentation.