Renesas R7FA4M2AD3CNE#BA5

Overview

R7FA4M2AD3CNE#BA5 from Renesas is a 100 MHz Arm Cortex-M33 microcontroller with 512 KB code flash, 8 KB data flash, and 128 KB SRAM (with parity/ECC), integrated USB 2.0 Full-Speed, QSPI, SDHI, CAN, dual 12-bit DACs, 12-bit ADC (22-channel), CTSU, and Secure Crypto Engine 9 with TrustZone for secure embedded control in industrial HMI and connected edge devices.

For engineers reviewing the R7FA4M2AD3CNE#BA5 datasheet, R7FA4M2AD3CNE#BA5 pinout, R7FA4M2AD3CNE#BA5 application, or R7FA4M2AD3CNE#BA5 equivalent, this page delivers verified technical context, package-specific I/O mapping, security architecture details, real-time peripheral timing constraints, and validated alternative MCU options for scalable RA-family migration.

Technical Context

The R7FA4M2AD3CNE#BA5 implements Armv8-M with TrustZone, enabling hardware-isolated secure/non-secure execution environments. Its Secure Crypto Engine 9 accelerates AES, RSA, ECC, SHA256, and GHASH with tamper detection and 128-bit unique ID, while memory protection includes MPU_S/MPU_NS (8 regions each) and configurable flash/SRAM TrustZone regions.

Peripherals are tightly coupled via Event Link Controller (ELC) for CPU-free signal routing and Data Transfer Controller (DTC) for low-latency interrupt-driven transfers. Clocking supports MOSC (8–24 MHz), SOSC (32.768 kHz), HOCO/MOCO/LOCO with trim, PLL/PLL2, and CAC for frequency accuracy validation - all operating across -40°C to +105°C.

Key Specifications

Pinout & Package

48-pin QFN (PWQN0048KC-A) package with exposed thermal pad; 29 general-purpose I/O pins, 4× 5-V tolerant inputs, 1× VBATT backup supply, dedicated USB_DP/DM, QSPI I/O0–I/O3, and CTSU touch sensing pins (TSn/TSCAP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Arm Cortex-M33 microcontroller applications.

Compared with R7FA4M2AD3CNE#BA5, the R7FA4M2AC3CNE#BA5 reduces flash capacity without altering security or analog capabilities, while the R7FA4M2AD3CFM#AAJ expands I/O and adds SDHI/SSIE at the cost of package size - making the QFN variant optimal for space-constrained secure HMI and gateway edge nodes.

Availability

R7FA4M2AD3CNE#BA5 is available at Aetrix Electronics and suitable for industrial HMI panels, secure edge gateways, smart energy meters, medical sensor hubs, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for R7FA4M2AD3CNE#BA5 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 industrial, automotive, and enterprise applications.

The RA4M2 Group targets secure, high-performance general-purpose MCUs for industrial IoT and human-machine interfaces, combining Arm TrustZone, hardware crypto acceleration, and rich analog/peripheral integration in compact packages like the R7FA4M2AD3CNE#BA5.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M2AD3CNE#BA5?

The R7FA4M2AD3CNE#BA5 features an Arm Cortex-M33 core operating at up to 100 MHz, implementing the Armv8-M architecture with security extensions including TrustZone and PMSAv8 memory protection. It supports both secure and non-secure execution states with dedicated SysTick timers and CoreSight ETM-M33 for trace debugging. This architecture underpins the R7FA4M2AD3CNE#BA5's deterministic real-time performance and hardware-enforced security partitioning.

Does the R7FA4M2AD3CNE#BA5 include hardware cryptographic acceleration, and what algorithms does it support?

Yes, the R7FA4M2AD3CNE#BA5 integrates the Secure Crypto Engine 9 (SCE9), which provides hardware acceleration for AES (symmetric), RSA/ECC/DSA (asymmetric), and SHA224/SHA256/GHASH (hashing). It also includes a 128-bit unique ID, tamper detection circuitry, and power analysis resistance. These capabilities are fully leveraged by the R7FA4M2AD3CNE#BA5's TrustZone environment to protect key injection, secure boot, and firmware update operations.

What package type and I/O count does the R7FA4M2AD3CNE#BA5 use?

The R7FA4M2AD3CNE#BA5 uses a 48-pin QFN package (PWQN0048KC-A, 7 mm × 7 mm, 0.5 mm pitch) with 29 general-purpose I/O pins, 4× 5-V tolerant inputs, and N-ch open-drain outputs. It lacks SDHI and SSIE found in larger-package variants but retains full USBFS, CAN, QSPI, CTSU, ADC12, and dual DAC12 functionality - making it ideal for space-constrained secure edge nodes where those interfaces are unnecessary.

How does the R7FA4M2AD3CNE#BA5 support low-power operation in battery-backed applications?

The R7FA4M2AD3CNE#BA5 supports ultra-low-power operation via multiple clock sources (LOCO, IWDT oscillator), Deep Software Standby mode, and a dedicated VBATT pin powering RTC, SOSC, and backup registers. Its AGT × 6 timers and IRQn-DS interrupt pins retain wake capability in standby, while the RTC maintains calendar time (2000–2099) with leap-year correction. This architecture enables years-long operation in battery-backed R7FA4M2AD3CNE#BA5 deployments such as smart meters and portable sensors.

Can the R7FA4M2AD3CNE#BA5 be used for capacitive touch applications, and what resources does it provide?

Yes, the R7FA4M2AD3CNE#BA5 includes a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 12 touch channels via TSn pins and TSCAP for charge-pump voltage generation. It operates independently of the CPU using its own oscillator and supports noise cancellation, auto-calibration, and proximity detection. The CTSU is fully integrated into the R7FA4M2AD3CNE#BA5's peripheral ecosystem and can trigger interrupts or DMA transfers upon touch events - eliminating need for external touch controllers in HMI designs.