Renesas R7FA4M3AD3CBM#BC0

Overview

R7FA4M3AD3CBM#BC0 from Renesas is a 100 MHz Arm Cortex-M33 microcontroller with 512 KB code flash, 8 KB data flash, and 128 KB SRAM (with ECC), designed for secure industrial HMI and connected edge nodes requiring USB FS, CAN, SDHI, and capacitive touch. It integrates Secure Crypto Engine 9, TrustZone, and operates from −40°C to +105°C in a 144-pin BGA package.

For engineers reviewing the R7FA4M3AD3CBM#BC0 datasheet, R7FA4M3AD3CBM#BC0 pinout, R7FA4M3AD3CBM#BC0 application, or R7FA4M3AD3CBM#BC0 equivalent, key selection considerations include its 512 KB flash capacity (vs. 1 MB variants), dual CAN support, QSPI interface for external memory, and tamper-resistant security architecture with dedicated AGT timers and RTC battery backup.

Technical Context

The R7FA4M3AD3CBM#BC0 implements Armv8-M with TrustZone isolation, enabling secure/non-secure execution environments with separate MPUs (8 regions each) and memory region attribution for flash, SRAM, and peripherals. Its dual-core timer system includes four GPT32 channels for motor control and six AGT units for low-power event timing.

Connectivity is built around six SCI modules (supporting UART, SPI, I²C, smart card, Manchester), two CAN 2.0B controllers requiring external transceivers, USB 2.0 Full-Speed with integrated PHY, and SDHI supporting SDXC/SDHC cards. Analog subsystem comprises two 12-bit ADCs (5 Msps interleaved), two 12-bit DACs, and an on-die temperature sensor routed to ADC inputs.

Key Specifications

Pinout & Package

Package: 144-pin Fine-Pitch Ball Grid Array (FBGA), PLBG0144KB-A footprint, 7 mm × 7 mm, 0.5 mm pitch, Pb-free (Sn only) terminal material.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AD3CBM#BC0, the R7FA4M3AF3CBM offers double flash capacity for complex firmware, while the R7FA4M3AD3CFB trades BGA density for LQFP manufacturability - both retain identical peripheral sets, security features, and temperature rating.

Availability

R7FA4M3AD3CBM#BC0 is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R7FA4M3AD3CBM#BC0 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 markets.

The RA4M3 Group targets secure, high-performance general-purpose MCUs for industrial IoT and human-machine interface applications, emphasizing TrustZone-based security, rich connectivity, and energy-efficient operation.

FAQ

What is the maximum operating frequency of the R7FA4M3AD3CBM#BC0?

The R7FA4M3AD3CBM#BC0 operates at a maximum frequency of 100 MHz using the Arm Cortex-M33 core. This speed is achieved with the internal PLL driven by the main oscillator (MOSC) or high-speed on-chip oscillator (HOCO), and supports real-time deterministic execution for industrial control and motor drive applications. The R7FA4M3AD3CBM#BC0 maintains this performance across its full −40°C to +105°C operating temperature range.

Does the R7FA4M3AD3CBM#BC0 support USB device and host functionality?

Yes, the R7FA4M3AD3CBM#BC0 integrates a USB 2.0 Full-Speed module (USBFS) that supports both device and host modes. It includes an internal transceiver, 10-pipe endpoint buffer, and complies with USB Specification 2.0 for full-speed (12 Mbps) and low-speed (1.5 Mbps, host only) transfers. The R7FA4M3AD3CBM#BC0 requires no external PHY, simplifying design for USB-connected HMI or firmware update interfaces.

How does the Secure Crypto Engine 9 in the R7FA4M3AD3CBM#BC0 accelerate cryptographic operations?

The Secure Crypto Engine 9 in the R7FA4M3AD3CBM#BC0 provides hardware acceleration for AES (128/192/256), RSA (up to 4096-bit), ECC (NIST P-256/P-384), DSA, and SHA-224/SHA-256 hash generation. It offloads compute-intensive operations from the Cortex-M33 core, reducing latency and power consumption during TLS handshakes, secure boot verification, or firmware signature checking. The R7FA4M3AD3CBM#BC0 also includes a 128-bit unique ID and tamper detection circuitry for root-of-trust implementation.

What are the analog capabilities of the R7FA4M3AD3CBM#BC0?

The R7FA4M3AD3CBM#BC0 features two independent 12-bit successive approximation ADCs (ADC12) with up to 5 Msps combined sampling rate in interleaved mode, two 12-bit DACs (DAC12), and an on-die temperature sensor (TSN) routed to ADC inputs. It supports up to 19 analog input channels, selectable internal references, and simultaneous sampling - enabling precision sensor interfacing, closed-loop control, and thermal monitoring in industrial and automotive applications. The R7FA4M3AD3CBM#BC0's analog subsystem is fully compatible with its ECC-protected SRAM and TrustZone isolation.

Can the R7FA4M3AD3CBM#BC0 operate in low-power modes while maintaining real-time functionality?

Yes, the R7FA4M3AD3CBM#BC0 supports multiple low-power modes including Deep Software Standby, where six AGT timers remain active with external event capture and pulse output capability. The RTC continues timekeeping with battery backup (VBATT), and selected peripherals like SCI and CAN can wake the device. This allows the R7FA4M3AD3CBM#BC0 to achieve µA-level current draw while sustaining time-critical functions - ideal for battery-powered edge sensors or always-on HMI wake-on-touch systems.