Renesas QB-RL78G1F-ZZZ

Overview

QB-RL78G1F-ZZZ from Renesas Electronics is an in-circuit emulator (ICE) designed exclusively for real-time debugging of RL78/G14 microcontroller-based systems. It supports full-speed execution, non-intrusive trace capture (128K frames), hardware breakpoints (2000 software + 8 execution/access), and real-time RAM monitoring across all internal RAM spaces. It interfaces via USB 2.0 to Windows host PCs and powers target systems with 1.6–5.5 V supply.

For engineers reviewing the QB-RL78G1F-ZZZ datasheet, QB-RL78G1F-ZZZ pinout, QB-RL78G1F-ZZZ application, or QB-RL78G1F-ZZZ equivalent, this page delivers verified system-level specifications, target interface configurations, trace capability limits, clock sourcing options (internal oscillator, external square wave, or mounted OSC1), and OEM supply support - all specific to the QB-RL78G1F-ZZZ base unit without bundled adapters.

Technical Context

The QB-RL78G1F-ZZZ implements a high-fidelity emulation core synchronized to the RL78/G14 instruction pipeline, enabling real-time Go/Step/Restart operations without code instrumentation. Its trace engine captures program address, access data, status flags, and time tags at up to 120 MHz measurement clock resolution with 8 ns minimum timing resolution.

It provides dual-clock domain support: a configurable high-speed system clock (up to 32 MHz typical) and a dedicated 32.768 kHz subsystem clock, both independently selectable via debugger configuration. Target power is sourced directly from the emulator (max 250 mA), eliminating need for separate target board power during debug sessions.

Key Specifications

Availability

QB-RL78G1F-ZZZ is available at Aetrix Electronics and suitable for embedded firmware development, production line debug validation, and automotive ECU qualification requiring stable component supply, long-term lifecycle continuity, and traceable sourcing.

Supply support for QB-RL78G1F-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 global semiconductor manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

QB-RL78G1F-ZZZ belongs to the IECUBE™ family of high-performance in-circuit emulators, engineered specifically for low-overhead, real-time debugging of RL78-series MCUs in safety-critical and timing-sensitive embedded systems.

FAQ

What is the primary function of the QB-RL78G1F-ZZZ?

The QB-RL78G1F-ZZZ is an in-circuit emulator (ICE) that enables real-time, non-intrusive debugging of RL78/G14 microcontroller applications. It supports full-speed execution, hardware-assisted trace capture, breakpoint management, and real-time memory/register inspection - all without modifying target firmware. The QB-RL78G1F-ZZZ serves as the core emulation platform before adding device-specific adapters like QB-30SP-NQ-01T or QB-64FB-YQ-01T.

Does QB-RL78G1F-ZZZ include target connectors or emulation probes?

No, QB-RL78G1F-ZZZ is the base emulator unit only and ships without target connectors, exchange adapters, YQ connectors, or emulation probes. These are ordered separately or via variant SKUs (e.g., QB-RL78G14-T64FB includes QB-64FB-NQ-01T and QB-64FB-YQ-01T). The QB-RL78G1F-ZZZ contains only the main ICE unit, USB cable, accessory disk, registration card, and packing list - as confirmed in Section 1.6 of the User's Manual Rev.2.00.

Which clock sources does QB-RL78G1F-ZZZ support for RL78/G14 emulation?

QB-RL78G1F-ZZZ supports three clock sourcing modes: (a) internally generated high-speed clock (configurable up to 32 MHz typical), (b) external square-wave clock input from the target system (X2 pin), and (c) oscillator mounted in the OSC1 socket (5 V CMOS type). Resonator-based oscillation on the target board is explicitly unsupported, per Section 2.2 of the manual.

What is the maximum trace depth and timing resolution of QB-RL78G1F-ZZZ?

QB-RL78G1F-ZZZ provides 128K frames of trace memory and a 120 MHz measurement clock, yielding a minimum timing resolution of 8 ns. This enables precise cycle-accurate profiling of execution time between events, including start-to-end program duration, inter-event latency, and worst-case timing margins - critical for real-time control and automotive diagnostics.

Can QB-RL78G1F-ZZZ be used with RL78/G13 or RL78/G12 microcontrollers?

No. QB-RL78G1F-ZZZ is strictly qualified and supported only for RL78/G14 target devices, as stated in Chapter 1 General and Table 1-1 of the User's Manual. It does not support RL78/G13, RL78/G12, or any other RL78 subfamily. Attempting use with incompatible devices may result in communication failure, incorrect trace data, or undefined behavior.