Renesas R7FA4E10B2CFM#AA0

Overview

R7FA4E10B2CFM from Renesas is a 32-bit Arm Cortex-M33 microcontroller operating at up to 100 MHz, featuring 256 KB code flash, 8 KB data flash, 128 KB SRAM with parity, USB 2.0 Full-Speed, Quad SPI, CAN 2.0B, and integrated 12-bit ADC/DAC. It targets industrial control, smart sensors, and USB-connected edge devices requiring secure, low-power operation.

For engineers reviewing the R7FA4E10B2CFM datasheet, R7FA4E10B2CFM pinout, R7FA4E10B2CFM application, or R7FA4E10B2CFM equivalent, key selection criteria include TrustZone-enabled security partitioning, battery-backed RTC with VBATT support, 5-V-tolerant I/O on 9 pins, and QSPI interface for external memory expansion in space-constrained LQFP-64 designs.

Technical Context

The R7FA4E10B2CFM implements Armv8-M architecture with TrustZone, supporting secure/non-secure execution states via dual MPU instances (8 regions each) and hardware-enforced memory isolation across flash, SRAM, and peripherals. Its clock system integrates MOSC, SOSC, HOCO/MOCO/LOCO oscillators plus PLL/PLL2 for flexible frequency synthesis up to 100 MHz.

Peripheral integration includes four SCI modules (UART/SPI/IIC/Manchester), one I2C, one SPI, one CAN controller compliant with ISO 11898-1, USBFS with internal transceiver, and QSPI for serial memory interfacing - all coordinated via Event Link Controller (ELC) to minimize CPU intervention.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant Sn finish. Thermal pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R7FA4E10D2CFM, the R7FA4E10B2CFM trades flash capacity for identical security, timing, and interface capabilities in the same LQFP-64 footprint - ideal for optimized firmware deployments. The R7FA2E10B2CFM omits critical connectivity and security blocks, making it unsuitable as a functional substitute despite shared RA4E1 software compatibility.

Availability

R7FA4E10B2CFM is available at Aetrix Electronics and suitable for industrial automation, USB-connected instrumentation, and secure edge sensing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R7FA4E10B2CFM 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 leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA4E1 Group delivers cost-optimized, secure Arm Cortex-M33 MCUs targeting industrial control, smart sensors, and USB-connected edge devices - emphasizing low power, integrated analog, and TrustZone-based firmware protection.

FAQ

What is the maximum operating frequency of the R7FA4E10B2CFM?

The R7FA4E10B2CFM operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This speed is achievable with the on-chip PLL driven by the main crystal oscillator (MOSC) or high-speed internal oscillator (HOCO). System performance remains stable across the full operating temperature range of –40°C to +85°C when powered within the specified 2.7–3.6 V supply range.

Does the R7FA4E10B2CFM support USB device functionality without external components?

Yes, the R7FA4E10B2CFM includes a fully integrated USB 2.0 Full-Speed module (USBFS) with an internal transceiver. It supports USB device mode (including CDC, HID, and MSC classes) without requiring external PHY components. Designers must add standard USB-series resistors (27 Ω on DP/DM) and a 1.5 kΩ pull-up on DP for device enumeration - no external transceiver like the TUSB3210 is needed for basic operation.

How many 5-V-tolerant I/O pins does the R7FA4E10B2CFM have in the LQFP-64 package?

The R7FA4E10B2CFM in the LQFP-64 package has nine 5-V-tolerant I/O pins: P205, P206, P400, P401, and P407 through P411. These pins tolerate input voltages up to 5.8 V (VCC + 4.0 V max) while operating from a 2.7–3.6 V supply, enabling direct interfacing with legacy 5 V logic, sensors, and industrial I/O standards without level shifters.

What security features are implemented in hardware on the R7FA4E10B2CFM?

The R7FA4E10B2CFM implements Arm TrustZone for Armv8-M, providing hardware-enforced separation between secure and non-secure code and data. It includes a secure MPU (MPU_S) with 8 regions, non-secure MPU (MPU_NS) with 8 regions, and configurable TrustZone attribution for flash, SRAM, and peripherals. Additionally, it integrates a true random number generator (TRNG), unique chip ID, and access control circuit - all confirmed operational per Renesas documentation.

Can the R7FA4E10B2CFM execute code directly from external QSPI flash memory?

Yes, the R7FA4E10B2CFM supports Execute-in-Place (XIP) from external serial flash via its Quad SPI (QSPI) interface. The QSPI controller provides memory-mapped access, allowing the Cortex-M33 core to fetch instructions directly from QSPI-connected devices such as Winbond W25Q80 or Macronix MX25L80. This eliminates the need to copy firmware to internal RAM, conserving SRAM for application data and real-time tasks.