Renesas R7FA4T1BB3CNH#BA0

Overview

R7FA4T1BB3CNH#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 triple high-speed analog comparators - deployed in industrial motor control and automotive body electronics.

For engineers reviewing the R7FA4T1BB3CNH#BA0 datasheet, R7FA4T1BB3CNH#BA0 pinout, R7FA4T1BB3CNH#BA0 application, or R7FA4T1BB3CNH#BA0 equivalent, key selection criteria include TrustZone-enabled secure boot, 32-pin QFN package with 16 I/O pins and 4 V-tolerant inputs, and integrated trigonometric function unit (TFU) for real-time motor vector control.

Technical Context

The R7FA4T1BB3CNH#BA0 implements Armv8-M architecture with TrustZone security, supporting secure/non-secure MPU regions and dual SysTick timers. Its clock system integrates HOCO/MOCO/LOCO oscillators, PLL, and CAC for frequency accuracy validation.

It delivers deterministic real-time control via six 16-bit GPT16E timers with BLDC PWM outputs (GTOUUP/GTOULO etc.), two AGT timers for low-power event counting, and hardware-accelerated TFU for sin/cos/arctan/sqrt(x²+y²) computation - all accessible without CPU intervention via ELC and DTC.

Key Specifications

Pinout & Package

Packaged in a 32-pin QFN (5 mm × 5 mm, 0.5 mm pitch) with exposed die pad recommended for VSS connection. Pin count and I/O allocation match Table 1.16 for QFN32: 16 general-purpose I/O pins, 5 dedicated input-only pins, 4 5-V-tolerant inputs, and full debug support via SWDIO/SWCLK.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M1AB3CNH#BA0, R7FA4T1BB3CNH#BA0 provides CAN FD and higher analog integration (dual DAC, triple ACMP) at identical package size; versus R7FA6T1BD3CNH#BA0, it offers lower cost and power for mid-tier motor control where EtherCAT is not required.

Availability

R7FA4T1BB3CNH#BA0 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor hubs, and energy monitoring systems requiring stable component supply across extended temperature ranges.

Supply support for R7FA4T1BB3CNH#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA4T1 Group is designed specifically for cost-sensitive, real-time motor control and automotive body applications - emphasizing integrated analog peripherals, CAN FD, and TrustZone security in compact QFN/LQFP packages.

FAQ

What is the maximum operating frequency of the R7FA4T1BB3CNH#BA0?

The R7FA4T1BB3CNH#BA0 operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This speed is achieved with the on-chip PLL driven by the main crystal oscillator (8–24 MHz) or high-speed on-chip oscillator (HOCO). The device maintains full peripheral functionality-including CAN FD, ADC12, and GPT16E timers-at this frequency under specified voltage (2.7–3.6 V) and temperature (-40°C to +105°C) conditions.

Does the R7FA4T1BB3CNH#BA0 support CAN FD, and what are its buffer configurations?

Yes, the R7FA4T1BB3CNH#BA0 includes a CAN FD module compliant with ISO 11898-1, supporting both classical CAN and CAN FD frames up to 5 Mbps. It provides 4 dedicated transmit buffers and 32 receive buffers, enabling robust message queuing for automotive diagnostics and real-time control networks. Buffer allocation and filtering are configured via register settings, and the module supports flexible data-rate switching per frame.

What analog peripherals are integrated into the R7FA4T1BB3CNH#BA0?

The R7FA4T1BB3CNH#BA0 integrates a 12-bit successive approximation ADC12 with 12 selectable input channels, three sample-and-hold circuits, and three programmable gain amplifiers (PGA); two 12-bit DAC12 outputs; three high-speed analog comparators (ACMPHS); and an on-die temperature sensor (TSN). These peripherals share common analog supplies (AVCC0/AVSS0) and reference pins (VREFH0/VREFL0), enabling tightly coupled sensor signal conditioning and closed-loop control.

How does the Trigonometric Function Unit (TFU) in the R7FA4T1BB3CNH#BA0 accelerate motor control algorithms?

The TFU in the R7FA4T1BB3CNH#BA0 executes sin, cos, arctan, and sqrt(x²+y²) operations in hardware with single-cycle latency. In Field-Oriented Control (FOC), it simultaneously computes sine/cosine for Park/Clarke transforms and arctan/sqrt for rotor angle estimation - reducing typical FOC loop execution time from ~12 µs to ~3.5 µs. This offloads the Cortex-M33 core and improves real-time responsiveness without external DSP.

What package type and pin count does the R7FA4T1BB3CNH#BA0 use, and are there thermal considerations?

The R7FA4T1BB3CNH#BA0 uses a 32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with an exposed die pad. Renesas recommends connecting the exposed pad to VSS for optimal thermal dissipation and electrical stability. Under maximum operating conditions (100 MHz, full peripheral activation), junction temperature remains within specification when PCB copper area under the pad exceeds 100 mm² and ambient temperature stays ≤+105°C.