Renesas R7FA4M3AE3CBM#BC0

Overview

R7FA4M3AE3CBM#BC0 from Renesas is a 100 MHz Arm Cortex-M33 microcontroller with 768 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 TrustZone, Secure Crypto Engine 9, and operates from -40°C to +105°C in a 144-pin BGA package.

For engineers reviewing the R7FA4M3AE3CBM#BC0 datasheet, R7FA4M3AE3CBM#BC0 pinout, R7FA4M3AE3CBM#BC0 application, or R7FA4M3AE3CBM#BC0 equivalent, key selection criteria include its dual CAN 2.0B interfaces, QSPI memory controller, 12-bit dual ADC with 5 Msps interleaving, CTSU-based touch sensing, and hardware-accelerated AES/RSA/ECC for firmware integrity and secure boot.

Technical Context

The R7FA4M3AE3CBM#BC0 implements Armv8-M with TrustZone, enabling secure/non-secure world isolation across flash, SRAM, and peripherals. Its Secure Crypto Engine 9 supports AES-128/256, RSA-2048/4096, ECC-256/384, and SHA256 with tamper detection via three dedicated pins and secure pin multiplexing.

It features dual 12-bit ADCs (ADC12) with up to 19 total analog inputs, 128 KB SRAM with ECC, and a rich timer suite including four 32-bit GPT32 channels for motor control, six AGT timers for low-power event timing, and RTC with calendar support backed by VBATT.

Key Specifications

Pinout & Package

144-pin Fine-Pitch Ball Grid Array (FBGA), PLBG0144KB-A package, 7 mm × 7 mm body, 0.50 mm ball pitch, RoHS-compliant Sn (tin) terminal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AF3CBM#BC0, the R7FA4M3AE3CBM#BC0 offers identical security, peripherals, and thermal rating but reduces flash capacity for cost-sensitive volume deployments; versus R7FA6M5BH3CFB#AA0, it trades raw performance and Ethernet for lower BOM cost, smaller footprint, and built-in capacitive touch-making it optimal for compact, secure, human-interfaced edge nodes.

Availability

R7FA4M3AE3CBM#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 R7FA4M3AE3CBM#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RA4M3 Group targets secure, high-integration microcontrollers for industrial automation and human-machine interfaces, emphasizing TrustZone-enabled security, analog-rich mixed-signal capability, and low-power connectivity-all embodied in the R7FA4M3AE3CBM#BC0.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M3AE3CBM#BC0?

The R7FA4M3AE3CBM#BC0 features an Arm Cortex-M33 core operating at up to 100 MHz, implementing the Armv8-M architecture with Security Extension (TrustZone). It includes dual SysTick timers (Secure and Non-secure), CoreSight ETM-M33 for trace, and an Arm Memory Protection Unit supporting eight regions each for secure and non-secure memory spaces. This architecture enables deterministic real-time execution alongside hardware-enforced security boundaries.

Does the R7FA4M3AE3CBM#BC0 support USB device and host functionality?

Yes, the R7FA4M3AE3CBM#BC0 integrates a USB 2.0 Full-Speed module (USBFS) that supports both device and host modes. It includes an internal transceiver, supports all USB 2.0 transfer types (control, bulk, interrupt, isochronous), and provides up to 10 configurable pipes. The module complies with Universal Serial Bus Specification 2.0 and enables direct connection to USB peripherals or hosts without external PHY components-ideal for embedded USB CDC, HID, or mass storage implementations.

How does the Secure Crypto Engine 9 in the R7FA4M3AE3CBM#BC0 enhance firmware security?

The Secure Crypto Engine 9 in the R7FA4M3AE3CBM#BC0 provides hardware acceleration for AES-128/256, RSA-2048/4096, ECC-256/384, and SHA256/GHASH operations, plus a 128-bit unique device ID and tamper detection circuitry. It works in concert with Arm TrustZone to isolate cryptographic keys and operations within the secure world, preventing software-level extraction. This enables secure boot verification, encrypted firmware updates, and TLS offload-reducing CPU load and attack surface compared to software-only crypto stacks.

What analog peripherals are integrated into the R7FA4M3AE3CBM#BC0?

The R7FA4M3AE3CBM#BC0 integrates two 12-bit successive approximation ADCs (ADC12) with up to 19 total analog input channels, two 12-bit DACs (DAC12), and an on-die temperature sensor (TSN). The ADCs support interleaved sampling at up to 5 Msps, selectable internal reference voltage, and direct routing from TSN. These peripherals are fully accessible in both secure and non-secure worlds under TrustZone control, enabling high-fidelity sensor acquisition and analog output generation for industrial and medical applications.

Is the R7FA4M3AE3CBM#BC0 pin-compatible with other RA4M3 family members?

Yes, the R7FA4M3AE3CBM#BC0 shares identical pinout and package (144-pin FBGA, PLBG0144KB-A) with other RA4M3 variants in the same package option-including R7FA4M3AF3CBM#BC0 and R7FA4M3AD3CBM#BC0. All share the same I/O mapping, peripheral pin assignments, and power/ground ball locations, enabling drop-in replacement for flash-size scaling without PCB redesign. However, functional differences (e.g., flash size, ADC channel count) must be validated in firmware.