Renesas R7FA4M2AD3CFM#BA0

Overview

R7FA4M2AD3CFM#BA0 from Renesas is a 64-pin LQFP Arm Cortex-M33 microcontroller operating at up to 100 MHz, featuring 512 KB code flash, 8 KB data flash, 128 KB SRAM with ECC/parity, USB 2.0 Full-Speed, CAN, SDHI, QSPI, dual 12-bit DACs, and integrated Secure Crypto Engine (SCE9) with AES/RSA/ECC/SHA256 for secure embedded control in industrial HMI and connected edge devices.

For engineers reviewing the R7FA4M2AD3CFM#BA0 datasheet, R7FA4M2AD3CFM#BA0 pinout, R7FA4M2AD3CFM#BA0 application, or R7FA4M2AD3CFM#BA0 equivalent, key selection criteria include its 64-pin LQFP package, TrustZone-enabled security partitioning, 100 MHz real-time performance, dual DAC support for analog output, and integrated USBFS + CAN for mixed-protocol industrial gateways.

Technical Context

The R7FA4M2AD3CFM#BA0 implements Armv8-M with TrustZone, enabling hardware-isolated secure/non-secure execution environments-up to three flash regions and two SRAM regions are configurable. Its SCE9 accelerator offloads AES-128/256, RSA-2048, ECC-P256, and SHA256 operations, while tamper detection pins and secure pin multiplexing enforce physical security boundaries.

System-level integration includes six SCI modules supporting UART, SPI, I²C, smart card, and Manchester modes; one CAN 2.0B controller requiring external transceiver; and SDHI supporting SD/SDHC/SDXC cards in 1-/4-bit bus modes. The ELC enables CPU-free peripheral event chaining between AGT timers, GPT PWM outputs, and ADC triggers.

Key Specifications

Pinout & Package

64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant Sn finish. Thermal pad not present. Pin 1 marked by dot or bevelled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M2AC3CFM#BA0, the R7FA4M2AD3CFM#BA0 provides 128 KB additional flash for bootloader redundancy and feature-rich firmware; versus R7FA6M2AF3CFM#AA0, it trades peak clock speed for certified secure element capabilities-making it optimal for regulated industrial endpoints where security assurance outweighs raw MIPS.

Availability

R7FA4M2AD3CFM#BA0 is available at Aetrix Electronics and suitable for industrial gateways, secure edge nodes, human-machine interfaces, and motor control subsystems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R7FA4M2AD3CFM#BA0 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 enterprise applications.

The RA4M2 group targets mid-range secure microcontrollers for industrial IoT and HMI, combining Arm Cortex-M33 performance, TrustZone security, and rich analog/peripheral integration to accelerate certified edge device development.

FAQ

What is the maximum operating frequency of the R7FA4M2AD3CFM#BA0?

The R7FA4M2AD3CFM#BA0 operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This frequency is achieved via the on-chip PLL driven by the main clock oscillator (MOSC) or high-speed on-chip oscillator (HOCO). System clocks for peripherals are derived from this core clock with configurable dividers, and the Clock Frequency Accuracy Measurement Circuit (CAC) validates stability under varying conditions. The R7FA4M2AD3CFM#BA0 maintains full specification compliance-including SRAM ECC and flash timing-at this rated speed.

Does the R7FA4M2AD3CFM#BA0 support USB device and host modes simultaneously?

No, the R7FA4M2AD3CFM#BA0 USB 2.0 Full-Speed module supports either device mode or host mode-not both concurrently. Mode selection is configured at reset via the MD pin and system registers. In device mode, it enumerates as a CDC, HID, or MSC class device; in host mode, it supports low-speed and full-speed peripherals via external hub logic. The R7FA4M2AD3CFM#BA0 does not implement OTG negotiation or dual-role switching hardware, so runtime mode change requires reset and reconfiguration.

How many tamper detection pins does the R7FA4M2AD3CFM#BA0 provide?

The R7FA4M2AD3CFM#BA0 provides three dedicated tamper detection pins (TAMP0, TAMP1, TAMP2), accessible as GPIOs P112, P113, and P114 in the 64-pin LQFP package. These pins support edge-triggered interrupts and can be configured to generate secure resets or trigger SCE9 tamper responses-including zeroization of sensitive keys-when voltage, frequency, or glitch anomalies are detected. Their inputs are routed directly to the security monitor block, bypassing general I/O control registers for hardened detection.

Is the R7FA4M2AD3CFM#BA0 pin-compatible with other RA4M2 variants in the same package?

Yes, the R7FA4M2AD3CFM#BA0 is fully pin-compatible with all other RA4M2 MCUs in the 64-pin LQFP package (e.g., R7FA4M2AC3CFM#BA0, R7FA4M2AB3CFM#BA0), sharing identical pin functions, electrical characteristics, and mechanical footprint. Differences are limited to internal flash size (512 KB vs. 384 KB vs. 256 KB) and optional features like SDHI or SSIE-disabled in hardware for lower-memory variants. No PCB redesign is needed when upgrading within the same package option.

What analog reference voltages does the R7FA4M2AD3CFM#BA0 require for ADC12 and DAC12 operation?

The R7FA4M2AD3CFM#BA0 requires separate analog references: VREFH0 and VREFL0 for the 12-bit ADC12 (typically tied to AVCC0 and AVSS0), and VREFH and VREFL for the dual 12-bit DAC12. All four pins must be externally decoupled with 0.1 µF capacitors. The ADC12 supports internal reference (1.45 V) or external VREFH0/VREFL0; DAC12 only accepts external references. Using mismatched or unfiltered references degrades linearity beyond ±1 LSB across the full 0–VREF range.