Renesas R7FA4M2AD3CFP#BA0

Overview

R7FA4M2AD3CFP from Renesas is a 100 MHz Arm Cortex-M33 microcontroller with 512 KB code flash, 8 KB data flash, 128 KB SRAM (with parity/ECC), USB 2.0 Full-Speed, SDHI, QSPI, dual 12-bit DACs, and integrated Secure Crypto Engine (SCE9) with AES/RSA/ECC/SHA256 for secure IoT edge nodes requiring real-time control and cryptographic integrity.

For engineers reviewing the R7FA4M2AD3CFP datasheet, R7FA4M2AD3CFP pinout, R7FA4M2AD3CFP application, or R7FA4M2AD3CFP equivalent, key selection criteria include TrustZone-enforced memory partitioning, 100-pin LQFP package with 77 GPIOs (14× 5-V tolerant), CAN 2.0B + USBFS dual-host/device capability, and hardware-accelerated crypto for firmware signing and secure boot validation.

Technical Context

The R7FA4M2AD3CFP implements Armv8-M with TrustZone, enabling secure/non-secure world isolation across up to three code flash regions, two data flash regions, and three SRAM regions. It integrates SCE9 for AES-128/256, RSA-2048/4096, ECC-P256/P384, and SHA224/256 acceleration with tamper detection and 128-bit unique ID.

Its timing architecture supports dual PLLs, HOCO/MOCO/LOCO oscillators, and CAC for clock accuracy verification. Peripheral interconnect uses Event Link Controller (ELC) to route 128+ event sources-including AGT, GPT, ADC12, and USBFS-directly between modules without CPU intervention.

Key Specifications

Pinout & Package

100-pin LQFP package (PLQP0100KB-B) with 77 general-purpose I/O pins, 14× 5-V tolerant inputs, dedicated USB_DP/DM, CAN_RX/TX, QSPI_IO0–IO3, SD0CLK/CMD/DAT[0:3], and dual DAC output pins (DA0, DA1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M2AC3CFP, the R7FA4M2AD3CFP offers 128 KB more code flash for complex OTA stacks and dual-bank firmware updates, while STM32H743VIT6 trades hardware security for higher clock speed and larger memory - making R7FA4M2AD3CFP optimal for certified secure edge deployments.

Availability

R7FA4M2AD3CFP is available at Aetrix Electronics and suitable for industrial gateways, secure smart meters, BLDC motor drives, and HMI-enabled control panels requiring stable component supply across extended product lifecycles.

Supply support for R7FA4M2AD3CFP 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, and power management ICs for industrial, automotive, and IoT markets.

The RA4M2 group targets secure, real-time edge applications with Arm Cortex-M33 cores, emphasizing TrustZone-based system security, low-power operation, and rich analog/peripheral integration for industrial automation and smart infrastructure.

FAQ

What is the maximum operating frequency of the R7FA4M2AD3CFP?

The R7FA4M2AD3CFP operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This frequency is achieved via the integrated PLL driven by the main clock oscillator (MOSC) or high-speed on-chip oscillator (HOCO). The R7FA4M2AD3CFP maintains full peripheral functionality-including USBFS, SDHI, and CAN-at this speed, with timing margins verified across the -40°C to +105°C temperature range.

Does the R7FA4M2AD3CFP support USB device and host modes simultaneously?

No, the R7FA4M2AD3CFP USB 2.0 Full-Speed module supports either device mode or host mode at runtime, but not both simultaneously. Mode selection is configured at initialization via the USBFS registers. The R7FA4M2AD3CFP does not implement OTG negotiation logic; external VBUS sensing (via USB_VBUS pin) and power switching (via USB_VBUSEN) must be managed in firmware to enable dynamic role switching.

How many tamper detection pins does the R7FA4M2AD3CFP provide?

The R7FA4M2AD3CFP provides three dedicated tamper pins (TAMP0, TAMP1, TAMP2) that trigger immediate secure state reset and key erasure upon voltage or logic-level violation. These pins are mapped to specific GPIOs in the 100-pin LQFP package and are monitored independently by the SCE9 security engine - a feature confirmed in the R01DS0367EJ0150 datasheet section 1.12.

Is the R7FA4M2AD3CFP pin-compatible with other RA4M2 group members?

Yes, the R7FA4M2AD3CFP is pin-compatible with other 100-pin LQFP variants in the RA4M2 family, including R7FA4M2AC3CFP and R7FA4M2AB3CFP. All share identical pin assignments, electrical characteristics, and peripheral mappings per the PLQP0100KB-B package definition in Table 1.14 of the datasheet. Firmware portability is maintained across these parts via Renesas' Flexible Software Package (FSP).

What analog reference voltages are required for the R7FA4M2AD3CFP's ADC12 and DAC12?

The R7FA4M2AD3CFP requires separate analog references: VREFH0/VREFL0 for ADC12 (12-bit SAR converter) and VREFH/VREFL for DAC12 (dual 12-bit outputs). These pins must be connected to AVCC0/AVSS0 unless external precision references are used. The datasheet specifies that VREFH0 and VREFH accept 2.7–3.6 V, matching the VCC operating range, and internal reference options are not available for either converter.