Renesas R7FS3A6783A01CFP#AA0

Overview

R7FS3A6783A01CFP#AA0 from Renesas is a 48-MHz Arm Cortex-M4 microcontroller with FPU, 256-KB code flash, 32-KB SRAM, integrated Segment LCD Controller (SLCDC), Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed interface, 14-bit ADC, and dual DACs-designed for low-power human-machine interface applications such as industrial control panels and smart home displays.

For engineers reviewing the R7FS3A6783A01CFP#AA0 datasheet, R7FS3A6783A01CFP#AA0 pinout, R7FS3A6783A01CFP#AA0 application, or R7FS3A6783A01CFP#AA0 equivalent, key selection considerations include its 100-pin LQFP package, -40°C to +105°C operating range, USB Battery Charging 1.2 compliance, ECC-protected SRAM, and integrated analog peripherals including OPAMP ×4 and ACMPLP ×2.

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 256-KB code flash with read-while-write capability, 8-KB data flash rated for 100,000 P/E cycles, and 32-KB SRAM split into 16-KB ECC-protected and 16-KB parity-protected regions.

The peripheral set is optimized for HMI-centric embedded systems: SLCDC drives up to 38×4 segment LCDs, CTSU supports 27 touch channels, USBFS includes on-chip transceiver and battery charging logic, and dual AGT timers plus RTC with calendar mode enable precise timing in battery-backed operation.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant Sn finish, rated for -40°C to +105°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS3A6783A01CFP#AA0, the LGA variant offers higher I/O density in smaller footprint but lacks extended temperature support, while the 64-pin LQFP reduces BOM cost and layout complexity at the expense of HMI capability scale.

Availability

R7FS3A6783A01CFP#AA0 is available at Aetrix Electronics and suitable for industrial control panels, smart home displays, medical patient monitors, and energy meter interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FS3A6783A01CFP#AA0 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 R7FS3A6783A01CFP#AA0 belongs to the S3A6 Microcontroller Group-a Renesas Synergy™ platform product line engineered for scalable, secure, and low-power HMI-intensive embedded applications with integrated analog and connectivity peripherals.

FAQ

What is the maximum operating frequency and core architecture of the R7FS3A6783A01CFP#AA0?

The R7FS3A6783A01CFP#AA0 features an Arm Cortex-M4 core with Floating Point Unit (FPU), operating at a maximum frequency of 48 MHz under the Armv7E-M architecture with DSP instruction set. This enables efficient execution of signal processing, motor control, and floating-point computations without external acceleration. The core includes an Arm Memory Protection Unit (MPU) with 8 configurable regions for memory isolation and safety-critical partitioning.

Does the R7FS3A6783A01CFP#AA0 support USB device functionality with battery charging capability?

Yes, the R7FS3A6783A01CFP#AA0 integrates a USB 2.0 Full-Speed Module (USBFS) with on-chip transceiver and voltage regulator, compliant with USB Battery Charging Specification 1.2. It supports full-speed (12 Mbps) and low-speed (1.5 Mbps) transfers in both host and device modes. The internal LDO supplies 3.3 V to the transceiver when powered at 5 V, enabling direct USB connection without external PHY or charging ICs.

How many analog-to-digital and digital-to-analog converter channels does the R7FS3A6783A01CFP#AA0 provide?

The R7FS3A6783A01CFP#AA0 includes a 14-bit successive approximation ADC (ADC14) with up to 25 selectable analog input channels, supporting both 12-bit and 14-bit conversion modes. It also provides one 12-bit DAC (DAC12) with output amplifier and two 8-bit DACs (DAC8) dedicated as reference sources for the low-power analog comparators (ACMPLP). These resources enable simultaneous high-precision sensing and analog output generation.

What human-machine interface peripherals are integrated into the R7FS3A6783A01CFP#AA0?

The R7FS3A6783A01CFP#AA0 integrates a Segment LCD Controller (SLCDC) supporting up to 38 segments × 4 commons or 34 segments × 8 commons, and a Capacitive Touch Sensing Unit (CTSU) with 27 dedicated channels. Both peripherals operate independently of the CPU via hardware accelerators, enabling low-power, responsive HMI functionality-including segmented display driving and robust touch button/slider detection-without external controller ICs.

What safety and security features are implemented in the R7FS3A6783A01CFP#AA0?

The R7FS3A6783A01CFP#AA0 includes ECC protection for 16 KB of SRAM, SRAM parity checking, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), Cyclic Redundancy Check (CRC) calculator, Data Operation Circuit (DOC), Independent Watchdog Timer (IWDT), and register write protection. Security features comprise AES128/256 encryption, GHASH, and True Random Number Generator (TRNG) via the Secure Crypto Engine 5 (SCE5) module-supporting secure boot and data confidentiality.