Renesas R7FA4T1BB3CFJ#BA0

Overview

R7FA4T1BB3CFJ#BA0 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 12-bit DACs, and 12-bit ADC with PGA-designed for real-time motor control and industrial sensing applications in extended temperature environments.

For engineers reviewing the R7FA4T1BB3CFJ#BA0 datasheet, R7FA4T1BB3CFJ#BA0 pinout, R7FA4T1BB3CFJ#BA0 application, or R7FA4T1BB3CFJ#BA0 equivalent, key selection considerations include its 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) package, TrustZone-enabled security partitioning, TFU-accelerated trigonometric computation, and support for BLDC motor PWM generation via six GPT16E timers with hall sensor inputs.

Technical Context

The R7FA4T1BB3CFJ#BA0 implements Armv8-M architecture with TrustZone, enabling secure/non-secure memory regions across flash (up to 3), SRAM (up to 3), and peripherals. It integrates dual clock domains (secure/non-secure SysTick), CoreSight™ ETM-M33 trace, and MPU with 8 regions each for secure and non-secure execution.

Its system-level timing architecture includes PLL, HOCO/MOCO/LOCO oscillators, CAC for clock accuracy validation, and ELC for CPU-free peripheral event linking. The analog subsystem supports simultaneous sampling on three ADC12 channels with programmable gain amplifiers and uses internal reference voltages (VREFH0/VREFL0) for precision conversion.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant Sn terminal finish, 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 R7FA4M1AB3CFJ#BA0, the R7FA4T1BB3CFJ#BA0 provides essential CAN FD and enhanced motor control peripherals at lower cost and smaller size; versus R7FA6T1BD3CFM#AA0, it delivers identical core functionality in a compact 32-pin package ideal for space-constrained industrial modules.

Availability

R7FA4T1BB3CFJ#BA0 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor nodes, and power conversion monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA4T1BB3CFJ#BA0 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 applications.

The RA4T1 Group, including R7FA4T1BB3CFJ#BA0, is engineered for real-time deterministic control in cost-sensitive industrial and automotive systems-emphasizing motor drive, sensor fusion, and functional safety with hardware-enforced security.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4T1BB3CFJ#BA0?

The R7FA4T1BB3CFJ#BA0 features an Arm Cortex-M33 core with a maximum operating frequency of 100 MHz. It implements the Armv8-M architecture with TrustZone security extension (r0p4-00rel0 revision), supporting both secure and non-secure execution states. Its clock tree includes PLL, HOCO (16/18/20 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and dedicated IWDT oscillator (15 kHz), all configurable via register settings in the R7FA4T1BB3CFJ#BA0.

Does the R7FA4T1BB3CFJ#BA0 support CAN FD, and what are its buffer configurations?

Yes, the R7FA4T1BB3CFJ#BA0 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 robust message handling in automotive and industrial networks. Buffer allocation and filtering are configured via the CANFD registers, and the module operates independently of CPU intervention using DMA or DTC transfers-critical for deterministic latency in the R7FA4T1BB3CFJ#BA0.

What analog peripherals are integrated into the R7FA4T1BB3CFJ#BA0, and how are they configured?

The R7FA4T1BB3CFJ#BA0 integrates a 12-bit ADC12 with 12 selectable input channels, three sample-and-hold circuits, and three programmable gain amplifiers (PGA); two 12-bit DAC12 channels; three high-speed analog comparators (ACMPHS); and an on-die temperature sensor (TSN). ADC12 uses dedicated VREFH0/VREFL0 pins for ratiometric accuracy, and PGA gains (1×–16×) are set per channel via ADPGACR registers. All analog functions are accessible through specific pins listed in Table 1.16 of the R7FA4T1BB3CFJ#BA0 datasheet.

How does the Trigonometric Function Unit (TFU) accelerate motor control algorithms in the R7FA4T1BB3CFJ#BA0?

The TFU in the R7FA4T1BB3CFJ#BA0 performs hardware-accelerated computation of sine/cosine (simultaneously), arctangent, and sqrt(x²+y²)-key operations in field-oriented control (FOC) of BLDC motors. It reduces execution time from ~1200 cycles (software) to <50 cycles per operation, enabling sub-50 µs current loop updates. The TFU interfaces directly with the CPU pipeline and supports interrupt-on-completion, allowing the R7FA4T1BB3CFJ#BA0 to offload intensive math while maintaining real-time determinism.

What package type and pin count does the R7FA4T1BB3CFJ#BA0 use, and are there any special layout considerations?

The R7FA4T1BB3CFJ#BA0 uses a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) with Sn (tin-only) terminal finish. Key layout requirements include: (1) connecting XCIN to VSS via a pull-down resistor (per datasheet note), (2) placing 0.1 µF decoupling capacitors within 3 mm of each VCC/VCL pin, (3) routing AVCC0/AVSS0 separately from digital supplies, and (4) connecting the exposed die pad to VSS. These constraints ensure signal integrity and thermal performance in the R7FA4T1BB3CFJ#BA0.