Renesas R7FA4M3AE3CFB#AA0

Overview

R7FA4M3AE3CFB#AA0 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), integrated USB 2.0 Full-Speed, SDHI, QSPI, dual CAN, and Secure Crypto Engine for industrial HMI and secure edge node applications.

For engineers reviewing the R7FA4M3AE3CFB#AA0 datasheet, R7FA4M3AE3CFB#AA0 pinout, R7FA4M3AE3CFB#AA0 application, or R7FA4M3AE3CFB#AA0 equivalent, key selection criteria include operating temperature range (−40°C to +105°C), LQFP-144 package compatibility, TrustZone-enabled secure boot, dual 12-bit ADCs with 5 Msps interleaving, and hardware-accelerated AES/RSA/ECC cryptography.

Technical Context

The R7FA4M3AE3CFB#AA0 implements Armv8-M architecture with TrustZone, enabling secure/non-secure execution environments isolated by MPU_S/MPU_NS (8 regions each) and memory region attribution for flash/SRAM. Its SCE9 engine offloads symmetric (AES), asymmetric (RSA/ECC), and hash (SHA256) operations while supporting tamper detection via three dedicated pins.

System-level integration includes Event Link Controller (ELC) for CPU-free peripheral triggering, Data Transfer Controller (DTC) and 8-channel DMAC for low-latency data movement, and dual GPT32/GPT16 timers with POEG for BLDC motor control - all operating within 2.7–3.6 V supply across −40°C to +105°C.

Key Specifications

Pinout & Package

144-pin LQFP (PLQP0144KA-B), 20 mm × 20 mm, 0.5 mm pitch, RoHS-compliant Sn terminal finish. Thermal pad exposed on bottom for enhanced heat dissipation in high-duty-cycle operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AF3CFB#AA0, the R7FA4M3AE3CFB#AA0 trades 232 KB flash capacity for identical security, analog, and interface capabilities - ideal for optimized BOM cost in volume production. Against R7FA6M5BH3CFB#AA0, it delivers full RA4M3 feature parity at lower power and price, avoiding over-specification for non-Ethernet use cases.

Availability

R7FA4M3AE3CFB#AA0 is available at Aetrix Electronics and suitable for industrial HMI panels, secure edge gateways, motor control hubs, medical sensor aggregators, and automotive body electronics requiring stable component supply across extended temperature ranges.

Supply support for R7FA4M3AE3CFB#AA0 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 design innovation since 1957, with core expertise in microcontrollers, analog, power, and SoC solutions.

The RA4M3 group targets secure, high-performance industrial and IoT edge applications, emphasizing TrustZone-based system security, rich analog integration, and low-power connectivity - all embodied in the R7FA4M3AE3CFB#AA0.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M3AE3CFB#AA0?

The R7FA4M3AE3CFB#AA0 features an Arm Cortex-M33 core operating at up to 100 MHz, implementing the Armv8-M architecture with TrustZone security extensions and PMSAv8 memory protection. It supports both secure and non-secure execution states, with dedicated SysTick timers and CoreSight ETM-M33 for debug visibility. This architecture enables deterministic real-time performance while maintaining hardware-enforced isolation between trusted and untrusted code domains in the R7FA4M3AE3CFB#AA0.

Does the R7FA4M3AE3CFB#AA0 include hardware cryptographic acceleration?

Yes, the R7FA4M3AE3CFB#AA0 integrates the Secure Crypto Engine 9 (SCE9), providing hardware acceleration for AES-128/256, RSA-2048/4096, ECC, DSA, and SHA224/SHA256. It also includes a 128-bit unique ID, tamper detection circuitry with three dedicated pins, and power analysis resistance. These features enable secure boot, firmware authentication, and TLS offload - all implemented directly in the R7FA4M3AE3CFB#AA0 without external security ICs.

What package type and pin count does the R7FA4M3AE3CFB#AA0 use?

The R7FA4M3AE3CFB#AA0 uses a 144-pin LQFP package (PLQP0144KA-B), measuring 20 mm × 20 mm with 0.5 mm pitch and Sn (tin-only) RoHS-compliant terminations. It provides 109 general-purpose I/O pins, 21 of which are 5-V tolerant, along with dedicated analog, USB, CAN, QSPI, and touch-sensing pins - all physically mapped and electrically validated for the R7FA4M3AE3CFB#AA0 variant.

How does the R7FA4M3AE3CFB#AA0 support secure firmware updates?

The R7FA4M3AE3CFB#AA0 supports secure firmware updates via background SWAP operation in its 768 KB code flash memory, allowing new firmware to be written while the current application runs. Combined with TrustZone-enforced secure boot and SCE9 signature verification, this enables authenticated, atomic updates without system downtime. The R7FA4M3AE3CFB#AA0 also provides dedicated option-setting memory and write-protection registers to prevent unauthorized modification of boot configuration.

What analog peripherals are integrated into the R7FA4M3AE3CFB#AA0?

The R7FA4M3AE3CFB#AA0 integrates two 12-bit successive approximation ADCs (ADC12 × 2) with up to 5 Msps interleaved sampling, 19 total analog input channels, and internal temperature sensor output. It also includes two 12-bit DACs (DAC12 × 2), a dedicated temperature sensor (TSN), and reference voltage pins (VREFH/VREFL). These analog resources are fully accessible and calibrated for precision measurement and control tasks within the R7FA4M3AE3CFB#AA0's industrial operating range.