Renesas R7FA4M3AF2CBM#BC0

Overview

R7FA4M3AF2CBM from Renesas Electronics is a 100 MHz Arm Cortex-M33 microcontroller with 1 MB 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 supporting AES/RSA/ECC/SHA256 - designed for secure industrial HMI, motor control, and connected edge nodes operating from -40°C to +85°C.

For engineers reviewing the R7FA4M3AF2CBM datasheet, R7FA4M3AF2CBM pinout, R7FA4M3AF2CBM application, or R7FA4M3AF2CBM equivalent, key selection considerations include TrustZone-enabled secure boot, dual 12-bit ADCs (5 Msps interleaved), CTSU capacitive touch support, 144-pin LQFP package with 109 GPIOs (21 5-V tolerant), and dual CAN 2.0B compliance with 32 mailboxes.

Technical Context

The R7FA4M3AF2CBM implements Armv8-M architecture with TrustZone, enabling hardware-isolated secure and non-secure execution environments. It integrates SCE9 crypto accelerators for AES-128/256, RSA-2048/4096, ECC P-256/P-384, and SHA224/256, paired with tamper detection pins and lifecycle management.

Its system architecture includes dual 32-bit GPT timers (4×), six low-power AGT timers, RTC with VBATT backup, ELC for CPU-free peripheral linking, and DTC/DMAC (8-channel) for deterministic data movement - all operating within 2.7–3.6 V supply across extended temperature range.

Key Specifications

Pinout & Package

144-pin LQFP (PLBG0144KB-A) package with 109 general-purpose I/O pins, 1 dedicated input pin (P200), 110 pull-up resistors, 109 N-ch open-drain outputs, and 21 5-V tolerant pins. Power: VCC/VSS, AVCC0/AVSS0, VREFH/VREFL, VBATT. Clock: XTAL/EXTAL, XCIN/XCOUT, CLKOUT. Debug: SWDIO/SWCLK/SWO/TDO/TDI/TMS/TCK.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AF3CBM, the R7FA4M3AF2CBM trades extended temperature rating for lower cost and power in controlled environments; versus R7FA6M3AF2CBM, it delivers proven security and connectivity at half the clock speed and reduced BOM complexity.

Availability

R7FA4M3AF2CBM is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, BLDC motor drives, and smart energy metering applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R7FA4M3AF2CBM 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The R7FA4M3AF2CBM belongs to the RA4M3 group - a family of secure, high-integration Arm Cortex-M33 MCUs designed for cost-sensitive industrial edge devices requiring robust security, rich connectivity, and analog capability.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M3AF2CBM?

The R7FA4M3AF2CBM 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 instances), CoreSight ETM-M33 trace, and MPU support for both secure and non-secure memory regions - enabling certified secure firmware execution on the R7FA4M3AF2CBM.

Does the R7FA4M3AF2CBM support USB device and host functionality?

Yes, the R7FA4M3AF2CBM integrates a USB 2.0 Full-Speed module (USBFS) capable of operating in 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 with dedicated buffer memory - eliminating the need for external PHY components in USB implementations using the R7FA4M3AF2CBM.

How many analog-to-digital converters does the R7FA4M3AF2CBM include, and what are their key specifications?

The R7FA4M3AF2CBM includes two independent 12-bit successive approximation ADC units (ADC12): Unit 0 supports up to 12 input channels, Unit 1 supports up to 10, with three shared analog input pins (AN000/AN100, etc.). Interleaved operation achieves 5 Msps sampling rate. Both units support internal temperature sensor and reference voltage inputs - critical for precision measurement applications built around the R7FA4M3AF2CBM.

What security features are integrated into the R7FA4M3AF2CBM beyond Arm TrustZone?

Beyond Arm TrustZone, the R7FA4M3AF2CBM integrates the Secure Crypto Engine 9 (SCE9) with hardware accelerators for AES-128/256, RSA-2048/4096, ECC P-256/P-384, and SHA224/256. It also provides a 128-bit unique ID, tamper detection pins, secure key management, and power analysis resistance - forming a certified secure element foundation for firmware authentication, encrypted storage, and secure boot on the R7FA4M3AF2CBM.

Which package type and pin count does the R7FA4M3AF2CBM use, and how many GPIOs are available?

The R7FA4M3AF2CBM uses a 144-pin LQFP package (PLBG0144KB-A, 20 mm × 20 mm, 0.5 mm pitch) with 109 general-purpose I/O pins, 1 dedicated input pin (P200), 110 pull-up resistors, 109 N-ch open-drain outputs, and 21 5-V tolerant pins - providing ample interface flexibility for industrial control, HMI, and multi-protocol connectivity in designs based on the R7FA4M3AF2CBM.