Renesas R7FS3A77C3A01CNB#AA1

Overview

R7FS3A77C3A01CNB#AA1 from Renesas is a 48-MHz Arm® Cortex®-M4 microcontroller with FPU, 1-MB code flash, 192-KB SRAM, integrated Segment LCD Controller (SLCDC), Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed with Battery Charging 1.2 support, 14-bit ADC, and dual 12-bit DACs - deployed in industrial HMI panels requiring low-power operation, touch interface, and local display control.

For engineers reviewing the R7FS3A77C3A01CNB#AA1 datasheet, R7FS3A77C3A01CNB#AA1 pinout, R7FS3A77C3A01CNB#AA1 application, or R7FS3A77C3A01CNB#AA1 equivalent, key selection criteria include QFN-64 package compatibility, -40°C to +105°C extended temperature rating, 6-channel SCI with UART/IIC/SPI modes, CAN 2.0B compliance, and on-chip security via SCE5 AES128/256 and TRNG.

Technical Context

This MCU implements an Armv7E-M architecture with DSP extensions and single-precision FPU, supporting deterministic real-time execution up to 48 MHz. Its memory subsystem includes ECC-protected SRAM (16 KB) and parity-protected SRAM (176 KB), plus 16-KB data flash rated for 100,000 P/E cycles.

The peripheral set is optimized for human-machine interface applications: SLCDC drives up to 48 segments × 8 commons or 52 segments × 4 commons; CTSU supports up to 14 electrodes; USBFS integrates on-chip transceiver and LDO regulator for 5-V bus-powered operation compliant with BC 1.2.

Key Specifications

Pinout & Package

Package: 64-pin QFN (8 mm × 8 mm, 0.4 mm pitch), RoHS-compliant Sn terminal finish, operating temperature range −40°C to +105°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS3A77C3A01CNB#AA1, R7FS3A77C2A01CFM trades security and extended temperature for lower cost, while R7FA6M2AF3CFP#AA0 offers higher CPU throughput and TrustZone but removes on-chip HMI acceleration - making R7FS3A77C3A01CNB#AA1 optimal for thermally demanding, touch-enabled industrial displays needing embedded crypto.

Availability

R7FS3A77C3A01CNB#AA1 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, automotive body control modules, and medical patient monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FS3A77C3A01CNB#AA1 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 R7FS3A77C3A01CNB#AA1 belongs to the Synergy S3A7 microcontroller group - designed specifically for scalable, secure, and low-power human-machine interface applications with integrated LCD, touch, USB, and safety features.

FAQ

What is the maximum operating frequency and core architecture of the R7FS3A77C3A01CNB#AA1?

The R7FS3A77C3A01CNB#AA1 features an Arm Cortex-M4 core with Floating Point Unit (FPU), operating at a maximum frequency of 48 MHz. It implements the Armv7E-M architecture with DSP instruction set and supports single-precision IEEE 754 floating-point operations. This architecture enables efficient real-time signal processing and deterministic interrupt response critical for industrial HMI and control applications using the R7FS3A77C3A01CNB#AA1.

Does the R7FS3A77C3A01CNB#AA1 support USB device functionality with battery charging capability?

Yes, the R7FS3A77C3A01CNB#AA1 integrates a USB 2.0 Full-Speed Module (USBFS) that operates as both host and device, with full support for USB Battery Charging Specification 1.2. Its on-chip transceiver and integrated 3.3-V LDO regulator allow direct connection to a 5-V USB bus, enabling enumeration, data transfer, and charging negotiation without external components - a key feature distinguishing the R7FS3A77C3A01CNB#AA1 in portable and field-serviceable designs.

How many analog-to-digital and digital-to-analog converter channels does the R7FS3A77C3A01CNB#AA1 include?

The R7FS3A77C3A01CNB#AA1 includes a 14-bit successive approximation ADC (ADC14) with up to 28 selectable input channels, and two independent 12-bit DACs (DAC12) with integrated output amplifiers. These converters support simultaneous sampling, programmable resolution (12-/14-bit), and internal reference selection - enabling high-fidelity sensor interfacing and analog output control in applications such as motor feedback loops and medical signal generation using the R7FS3A77C3A01CNB#AA1.

What human-machine interface peripherals are integrated into the R7FS3A77C3A01CNB#AA1?

The R7FS3A77C3A01CNB#AA1 integrates a Segment LCD Controller (SLCDC) supporting up to 52 segments × 4 commons or 48 segments × 8 commons, and a Capacitive Touch Sensing Unit (CTSU) with up to 14 electrode channels. These peripherals eliminate the need for external LCD drivers and touch controllers, reducing BOM count and PCB area - a defining capability of the R7FS3A77C3A01CNB#AA1 for compact, cost-sensitive HMI designs.

Is the R7FS3A77C3A01CNB#AA1 qualified for extended temperature operation, and what package type does it use?

Yes, the R7FS3A77C3A01CNB#AA1 is rated for operation from −40°C to +105°C and uses a 64-pin QFN package (8 mm × 8 mm, 0.4 mm pitch) with Sn (tin-only) RoHS-compliant terminations. This combination makes the R7FS3A77C3A01CNB#AA1 suitable for under-hood automotive, industrial control cabinets, and outdoor metering equipment where thermal resilience and compact footprint are essential design constraints.