Renesas QB-RL78I1A-ZZZ

Overview

QB-RL78I1A-ZZZ from Renesas Electronics is an in-circuit emulator (ICE) designed specifically for debugging RL78/I1A microcontroller-based systems. It supports real-time execution, non-real-time stepping, memory/register manipulation, trace capture (128K frames), and break-point management (2000 software breakpoints). It interfaces via USB 1.1/2.0 to Windows PCs and supplies target power at 1.6–5.5 V for embedded firmware development.

For engineers reviewing the QB-RL78I1A-ZZZ datasheet, QB-RL78I1A-ZZZ pinout, QB-RL78I1A-ZZZ application, or QB-RL78I1A-ZZZ equivalent, this page delivers verified hardware specifications, system-level debug capabilities, target interface configurations, and OEM supply support - all specific to the QB-RL78I1A-ZZZ evaluation platform.

Technical Context

The QB-RL78I1A-ZZZ implements a full-featured IECUBE-class emulation architecture with dual-clock domain support: internal high-speed oscillator (up to 32 MHz typical) and subsystem clock (32.768 kHz). It provides real-time RAM monitoring across all internal RAM spaces (61.75 KB max) and supports event-triggered trace with 120 MHz measurement clock and 8 ns resolution.

It enables comprehensive debug workflows including Go/Step In/Next Over, memory initialization/copy/compare, disassembly, local/global variable watch, stack trace, and fail-safe breaks (e.g., SFR illegal access, stack overflow). Trace modes include unconditional, section, qualify, and delay trigger - all configurable via host debugger software.

Key Specifications

Availability

QB-RL78I1A-ZZZ is available at Aetrix Electronics and suitable for RL78/I1A-based automotive body control modules, industrial sensor nodes, smart metering firmware validation, and consumer appliance MCU development requiring stable component supply and long-term toolchain continuity.

Supply support for QB-RL78I1A-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 leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

The QB-RL78I1A-ZZZ belongs to Renesas' IECUBE in-circuit emulator product line, engineered to deliver high-fidelity, real-time debug visibility for RL78-family MCUs in production-representative environments.

FAQ

What is the primary target device supported by the QB-RL78I1A-ZZZ?

The QB-RL78I1A-ZZZ is explicitly designed for the RL78/I1A microcontroller. It provides full hardware-level emulation including instruction trace, register visibility, and peripheral register access aligned to the RL78/I1A's architecture. Unlike generic debuggers, the QB-RL78I1A-ZZZ ensures cycle-accurate timing behavior and correct handling of RL78/I1A-specific features such as on-chip debug ROM and low-power modes. This makes QB-RL78I1A-ZZZ the validated ICE solution for RL78/I1A firmware development and validation.

Does the QB-RL78I1A-ZZZ include an onboard oscillator socket like the QB-RL78G14?

Yes - the QB-RL78I1A-ZZZ includes an OSC1 socket identical in function to that on the QB-RL78G14, supporting external CMOS oscillators at 5.0 V supply for precise clock injection into the RL78/I1A target system. This allows deterministic clock sourcing independent of the target board's oscillator circuitry, critical for validating timing-sensitive firmware under controlled conditions. The QB-RL78I1A-ZZZ uses the same OSC1 mounting and configuration methodology documented in the QB-RL78G14 User's Manual Rev.2.00.

What debug capabilities does the QB-RL78I1A-ZZZ provide for real-time analysis?

The QB-RL78I1A-ZZZ delivers real-time RAM monitoring across all internal RAM spaces (61.75 KB max), 128K-frame trace buffer with 120 MHz measurement clock and 8 ns resolution, and multi-event triggering (execution/access breakpoints, timer overflow, timeout). These capabilities enable live observation of variable states, precise timing measurement of code sections, and root-cause analysis of race conditions or interrupt jitter - all without halting target execution. This real-time capability is integral to the QB-RL78I1A-ZZZ's role in validating time-critical RL78/I1A applications.

Is the QB-RL78I1A-ZZZ compatible with CubeSuite+ IDE?

Yes - the QB-RL78I1A-ZZZ is fully supported by Renesas' CubeSuite+ Integrated Development Environment (R20UT0727E), which provides unified configuration, flash programming, and debug session control. CubeSuite+ recognizes QB-RL78I1A-ZZZ as a native IECUBE-class device, enabling seamless setup of clock sources, breakpoint management, trace filters, and memory/register views. No third-party drivers or middleware are required; compatibility is confirmed in CubeSuite+ release notes and the QB-RL78I1A-ZZZ system configuration documentation.

What accessories ship standard with the QB-RL78I1A-ZZZ-ZZZ variant?

The QB-RL78I1A-ZZZ variant ships with the core emulator unit, a 2-meter USB interface cable, online user registration card (warranty + software contract), accessory CD-ROM (including manuals and utilities), and packing list - matching the base package contents defined for QB-RL78G14-ZZZ in Rev.2.00. Adapters, probes, and target connectors (e.g., EA, NQ, TC types) are orderable separately and selected based on the RL78/I1A package variant (e.g., T-type or S-type socket), per Table 1-3 in the reference manual.