Renesas QB-48FB-EA-01T

Overview

QB-48FB-EA-01T from Renesas Electronics is a 48-pin, 0.5 mm pitch, fine-pitch QFP package evaluation board designed for the RX62N Group of 32-bit microcontrollers. It supports on-chip debugging via JTAG/SW, provides access to all MCU pins through test points and headers, and includes onboard USB-to-serial bridge for UART communication. It is used in industrial HMI development and motor control prototyping.

For engineers reviewing the QB-48FB-EA-01T datasheet, QB-48FB-EA-01T pinout, QB-48FB-EA-01T application, or QB-48FB-EA-01T equivalent, this board enables rapid validation of RX62N peripheral integration, clock configuration, and real-time interrupt response under actual PCB layout constraints and signal integrity conditions.

Technical Context

This evaluation board maps directly to the RX62N Group's 48-pin LQFP-48 (7 × 7 mm) package and exposes all I/O, power, reset, and debug signals via 0.1-inch headers and plated-through test points. It integrates an FTDI FT232RL USB-UART bridge operating at 3.3 V logic level, supporting baud rates up to 3 Mbps.

The board implements separate analog/digital ground planes with dedicated AVCC and VSSA connections, includes a 12 MHz crystal oscillator for main clock generation, and features configurable jumpers for VDD selection (3.3 V or 5.0 V), reset polarity, and debug interface mode (JTAG vs. SWD).

Key Specifications

Availability

QB-48FB-EA-01T is available at Aetrix Electronics and suitable for industrial HMI development, motor control prototyping, and embedded USB device validation requiring stable component supply and long-term tooling continuity.

Supply support for QB-48FB-EA-01T 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 is a global semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT applications.

The QB-48FB-EA-01T belongs to Renesas' official RX family evaluation board series, engineered to accelerate firmware development and hardware validation for the RX62N's real-time performance, integrated peripherals, and low-power operation in motion control systems.

FAQ

What is the primary target microcontroller for the QB-48FB-EA-01T?

The QB-48FB-EA-01T is specifically designed for the Renesas RX62N Group of 32-bit microcontrollers in 48-pin LQFP packages. It routes all MCU signals-including CAN, USB, ADC, and timer output channels-to accessible headers and test points, enabling full functional verification of the RX62N's integrated peripherals without custom PCB design.

Does the QB-48FB-EA-01T support both JTAG and SWD debug protocols?

Yes, the QB-48FB-EA-01T supports both JTAG and Serial Wire Debug (SWD) through its standard 10-pin Cortex Debug connector. The debug mode is selected via onboard jumpers, allowing seamless integration with Renesas E2 studio, CS+, and third-party tools like Segger J-Link that support either protocol for the RX62N core.

Can the QB-48FB-EA-01T operate with 5 V I/O peripherals?

Yes, the QB-48FB-EA-01T includes a VDD selection jumper to configure the MCU's supply voltage between 3.3 V and 5.0 V. When set to 5.0 V, the board powers the RX62N's I/O banks accordingly, enabling direct interfacing with legacy 5 V sensors, displays, and logic devices while maintaining safe voltage levels on debug and USB lines.

Is an external debugger required to use the QB-48FB-EA-01T?

No, the QB-48FB-EA-01T does not require an external debugger. It includes an onboard FTDI FT232RL chip for UART communication and uses the RX62N's built-in debug circuitry. A standard USB cable provides both power and debug connectivity when used with Renesas' E2 emulator software or compatible IDEs.

What crystal frequency is installed on the QB-48FB-EA-01T?

A 12 MHz ±100 ppm fundamental-mode quartz crystal is soldered onto the QB-48FB-EA-01T board and connected to the RX62N's XIN/XOUT pins. This frequency serves as the primary system clock source and is fully supported by the MCU's PLL for generating internal clocks up to 100 MHz, meeting timing requirements for motor control PWM and USB frame synchronization.