Renesas R7FA4T1BB3CFM#AA0

Overview

R7FA4T1BB3CFM from Renesas is a 32-bit Arm® Cortex®-M33 microcontroller operating at up to 100 MHz, featuring 256 KB code flash, 4 KB data flash, 40 KB SRAM, CAN FD, I3C, dual SPI, and 12-bit ADC/DAC with PGA-designed for real-time industrial motor control and secure edge sensing applications.

For engineers reviewing the R7FA4T1BB3CFM datasheet, R7FA4T1BB3CFM pinout, R7FA4T1BB3CFM application, or R7FA4T1BB3CFM equivalent, key selection criteria include TrustZone-enabled security partitioning, 6-channel GPT16E PWM for BLDC control, TFU-accelerated trigonometric computation, and -40°C to +105°C operation in 64-pin LQFP.

Technical Context

The R7FA4T1BB3CFM implements Armv8-M architecture with TrustZone, supporting secure/non-secure MPU regions (8+8), dual SysTick timers, and CoreSight™ ETM-M33 for trace. Its memory subsystem includes ECC-protected 8 KB SRAM and parity-protected 32 KB SRAM alongside 256 KB code flash with 100k-cycle endurance.

Peripherals are orchestrated via Event Link Controller (ELC) for CPU-free signal routing, Data Transfer Controller (DTC), and 8-channel DMAC. Clock management integrates PLL, HOCO/MOCO/LOCO oscillators with trim, CAC for frequency accuracy validation, and independent IWDT with dedicated 15 kHz oscillator.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm, 0.5 mm pitch, exposed die pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4T1BB3CFM, R7FA4M1AB3CFM trades CAN FD for USB and extra SRAM-ideal for human-machine interfaces-while R7FA6T1BD3CFM upgrades to EtherCAT and 240 MHz performance at the cost of data flash and pin compatibility, targeting advanced industrial automation.

Availability

R7FA4T1BB3CFM is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor edge nodes, and secure PLC I/O modules requiring stable component supply across extended temperature ranges.

Supply support for R7FA4T1BB3CFM 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 RA4T1 Group is engineered for real-time, security-critical industrial applications-emphasizing motor control, sensor fusion, and functional safety with Arm TrustZone and hardware accelerators like TFU.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4T1BB3CFM?

The R7FA4T1BB3CFM features an Arm Cortex-M33 core with a maximum operating frequency of 100 MHz. It implements the Armv8-M architecture with security extensions, including TrustZone, MPU, and dual SysTick timers. This configuration delivers deterministic real-time performance and hardware-enforced security isolation for industrial and automotive applications where both timing predictability and secure execution are mandatory. The R7FA4T1BB3CFM achieves this while maintaining full compatibility with Arm developer tools and RTOS ecosystems.

Does the R7FA4T1BB3CFM support CAN FD, and what are its frame-handling capabilities?

Yes, the R7FA4T1BB3CFM integrates a CAN FD module compliant with ISO 11898-1, supporting both classical CAN and CAN FD frames. It provides 4 transmit buffers and 32 receive buffers, enabling high-throughput message handling in automotive and industrial networks. The module operates at up to 5 Mbps data-rate in FD mode and includes hardware timestamping and flexible filtering. Unlike external CAN transceivers, the R7FA4T1BB3CFM's integrated controller eliminates protocol translation overhead and simplifies PCB layout-critical for space-constrained edge nodes.

How does the Trigonometric Function Unit (TFU) in the R7FA4T1BB3CFM accelerate motor control algorithms?

The TFU in the R7FA4T1BB3CFM provides single-cycle hardware acceleration for sine/cosine and arctangent/sqrt(x²+y²) computations-core operations in Field-Oriented Control (FOC). Benchmarks show it reduces FOC loop latency by over 90% compared to CMSIS-DSP library execution. This allows the R7FA4T1BB3CFM to sustain 20 kHz PWM switching frequencies while maintaining headroom for communication and safety monitoring tasks. The TFU is accessible via standard CMSIS intrinsics, ensuring seamless integration into existing motor control firmware stacks without architectural changes.

What analog peripherals are integrated into the R7FA4T1BB3CFM, and how are they configured for precision sensing?

The R7FA4T1BB3CFM integrates a 12-bit ADC12 with 12 selectable input channels, 3 sample-and-hold circuits, and 3 programmable gain amplifiers (PGA) offering gains from 1× to 12×. It also includes two 12-bit DAC12 outputs, three high-speed analog comparators (ACMPHS), and an on-die temperature sensor (TSN). These peripherals share a common reference structure (VREFH0/VREFL0) and support synchronized sampling triggered by GPT or AGT timers. This configuration enables simultaneous current/voltage/temperature acquisition in motor control loops without external signal conditioning-reducing component count and improving measurement consistency in the R7FA4T1BB3CFM-based design.

Is the R7FA4T1BB3CFM qualified for extended temperature operation, and what package options are available?

Yes, the R7FA4T1BB3CFM is rated for operation from -40°C to +105°C ambient temperature, meeting industrial and under-hood automotive requirements. It is offered exclusively in a 64-pin LQFP package (PLQP0064KB-C), measuring 10 mm × 10 mm with 0.5 mm pitch and an exposed die pad recommended for thermal and electrical grounding to VSS. This package variant is pin-compatible with other RA4T1 devices in the same footprint (e.g., R7FA4T1B93CFM), enabling memory-scaling flexibility without PCB redesign. No QFN or smaller LQFP variants are assigned to the R7FA4T1BB3CFM part number.