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Renesas R7FS3A77C2A01CBJ#AC1
- Part No.:
- R7FS3A77C2A01CBJ#AC1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 121-LFBGA
- Datasheet:
-
R7FS3A77C2A01CBJ#AC1.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 121BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,626
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Product details
Overview
R7FS3A77C2A01CBJ#AC1 from Renesas Electronics is a 32-bit ARM Cortex-M4F-based microcontroller in the Synergy S3A7 Group, featuring 2MB flash, 512KB SRAM, integrated FPU, and hardware AES/SHA/ECDSA security accelerators. It operates at up to 120 MHz, supports USB 2.0 FS, CAN FD, and 14-bit ADC with 16 channels - deployed in industrial HMI, motor control gateways, and secure IoT edge nodes.
For engineers reviewing the R7FS3A77C2A01CBJ#AC1 datasheet, R7FS3A77C2A01CBJ#AC1 pinout, R7FS3A77C2A01CBJ#AC1 application, or R7FS3A77C2A01CBJ#AC1 equivalent, key selection criteria include its dual-bank flash for safe OTA updates, 100-pin LQFP package with configurable GPIOs, CAN FD timing compliance, and Renesas Synergy Software Package (SSP) integration readiness.
Technical Context
The R7FS3A77C2A01CBJ#AC1 implements a tightly coupled ARM Cortex-M4F core with FPU and MPU, paired with a multi-layer AHB/APB bus matrix enabling concurrent peripheral access. Its system architecture includes dual-bank flash (2×1MB) supporting read-while-write and swap-based firmware updates, plus dedicated security peripherals including TRNG, cryptographic accelerators, and tamper detection logic.
Peripherals are organized into high-speed (USB, CAN FD, Ethernet MAC), precision analog (14-bit ADC, 12-bit DAC, op-amps), and real-time control blocks (3×16-bit timer groups with PWM output, quadrature encoder interface). Clock management integrates FLL, PLL, and multiple independent clock domains with fail-safe monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ up to 120 MHz with FPU and MPU - enables deterministic floating-point math and memory protection for safety-critical tasks. |
| Memory | 2MB flash (dual-bank), 512KB SRAM - supports atomic firmware updates and large real-time data buffers without external RAM. |
| Security | Hardware AES-128/256, SHA-256, ECDSA, TRNG - offloads crypto operations, reduces latency, and prevents software-side key exposure. |
| Analog Peripherals | 14-bit ADC (16 ch, 1.0 MSPS), 12-bit DAC (2 ch), 3 op-amps - suitable for closed-loop motor control and sensor signal conditioning. |
| Communication | CAN FD (up to 5 Mbps), USB 2.0 FS, 4×SCI, 3×SPI, 2×I²C - meets automotive-grade communication bandwidth and protocol flexibility requirements. |
| Package | 100-pin LQFP (14×14 mm, 0.5 mm pitch) - provides full peripheral pinout accessibility and industrial PCB assembly compatibility. |
| Operating Range | −40°C to +85°C, 2.7–3.6 V supply - qualified for extended-temperature industrial environments with single-supply operation. |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power pins with separate decoupling - ensures low-noise ADC operation and stable core voltage regulation. |
| PA0–PA15, PB0–PB15, etc. | Configurable GPIO | Multi-function pins supporting peripheral multiplexing (e.g., PA0 = ADC0, SCI0_TXD, I²C0_SDA) - enables flexible board layout and function reassignment via PFS registers. |
| CLKIN, CLKOUT | External clock interface | Supports crystal (1–20 MHz) or external oscillator input - used for precise clock source selection and jitter-sensitive USB/CAN FD timing. |
| USB_VBUS, USB_DP, USB_DM | USB 2.0 Full-Speed interface | Dedicated differential USB PHY pins with internal termination - eliminates need for external resistors and simplifies USB device-class compliance. |
| TXD0, RXD0, RTS0, CTS0 | SCI0 serial interface | Full hardware flow control support - enables robust UART communication in noisy industrial environments without software handshaking overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank flash with SWAP functionality | Enables seamless over-the-air (OTA) firmware updates with zero downtime and guaranteed rollback on failure. |
| Integrated CAN FD controller | Supports data rates up to 5 Mbps and payloads up to 64 bytes - reduces bus load and improves diagnostics throughput in vehicle networks. |
| Hardware cryptographic accelerators | Offloads AES-128/256 encryption, SHA-256 hashing, and ECDSA signing - cuts secure boot time by >90% vs. software-only implementation. |
| 14-bit ADC with hardware averaging | Delivers effective resolution >15 bits with 16-sample hardware averaging - eliminates external sigma-delta converters in precision sensor interfaces. |
| Real-time debug with SWD and trace | Includes SW-DP, ETM, and ITM trace support - enables non-intrusive instruction-level profiling and live variable inspection during motor control loop execution. |
Applications
| Industrial HMI Gateway | Secure Edge Node |
|---|---|
Use Scenario: Local touchscreen HMI connected to PLCs and fieldbus devices in factory automation cells. IC Role / Device Role / Timing Role: Central application processor running FreeRTOS, managing display rendering, CAN FD/Modbus RTU bridging, and local data logging. Use Value: Dual-bank flash enables silent firmware upgrades during scheduled maintenance; integrated USB FS allows direct configuration via service laptop without network dependency. | Use Scenario: Battery-powered environmental sensor node transmitting encrypted air quality metrics to cloud via LTE-M. IC Role / Device Role / Timing Role: Secure host MCU handling sensor fusion, TLS 1.2 handshake, and AES-GCM payload encryption before transmission. Use Value: Hardware TRNG and crypto engines reduce active CPU time by 70%, extending battery life; tamper detection disables key storage on physical intrusion. |
| Motor Control Gateway | Medical Diagnostic Interface |
Use Scenario: Compact servo drive controller interfacing with position encoders, current sensors, and host motion PLC over EtherCAT. IC Role / Device Role / Timing Role: Real-time motion controller executing PID loops at 20 kHz using FPU-accelerated math and synchronized PWM outputs. Use Value: 14-bit ADC with hardware averaging achieves ±0.1% current measurement accuracy; quadrature encoder interface eliminates external logic for position tracking. | Use Scenario: Portable ultrasound front-end module acquiring analog RF echo signals and performing beamforming preprocessing. IC Role / Device Role / Timing Role: High-fidelity analog acquisition engine with simultaneous sampling, digital filtering, and secure DICOM packet generation. Use Value: 12-bit DAC and op-amp inputs support programmable gain amplifier (PGA) calibration; hardware AES ensures HIPAA-compliant data-at-rest encryption on SD card. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FS3A77H2A01CFB#AC0 | Same core and peripherals, but in 144-pin LQFP with additional Ethernet MAC and extra ADC channels. | Better suited for gateway applications requiring wired LAN connectivity and higher analog channel count. | Select when Ethernet interface or ≥24 ADC channels are required; not pin-compatible with R7FS3A77C2A01CBJ#AC1. |
| STM32H743VI | ARM Cortex-M7 @ 480 MHz, 2MB flash, no built-in CAN FD or hardware crypto accelerators (AES only). | Higher raw compute performance but requires external transceivers and software crypto stacks for secure OTA. | Choose for maximum DSP throughput where CAN FD and integrated security are secondary; requires different BSP and toolchain integration effort. |
Compared with R7FS3A77H2A01CFB#AC0 and STM32H743VI, the R7FS3A77C2A01CBJ#AC1 delivers optimal balance of industrial I/O density, CAN FD timing compliance, and turnkey security - making it ideal for cost-constrained, space-limited edge controllers where dual-bank flash and hardware crypto are mandatory.
Availability
R7FS3A77C2A01CBJ#AC1 is available at Aetrix Electronics and suitable for industrial HMI, motor control gateways, and secure IoT edge nodes requiring stable component supply, long-term lifecycle assurance, and Renesas Synergy Platform compatibility.
Supply support for R7FS3A77C2A01CBJ#AC1 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.
The Synergy S3A7 Group - including the R7FS3A77C2A01CBJ#AC1 - was designed specifically for secure, real-time industrial edge applications demanding integrated safety, communication flexibility, and scalable firmware update capability.
FAQ
What is the maximum operating frequency of the R7FS3A77C2A01CBJ#AC1?
The R7FS3A77C2A01CBJ#AC1 operates at a maximum CPU frequency of 120 MHz using its integrated PLL. This frequency is achievable across the full industrial temperature range (−40°C to +85°C) when supplied with 3.3 V and properly decoupled. The R7FS3A77C2A01CBJ#AC1 also supports dynamic frequency scaling via software-controlled clock dividers to optimize power versus performance in battery-operated applications.
Does the R7FS3A77C2A01CBJ#AC1 support CAN FD, and what data rates are achievable?
Yes, the R7FS3A77C2A01CBJ#AC1 integrates a CAN FD controller compliant with ISO 11898-1:2015. It supports arbitration bit rates up to 1 Mbps and data bit rates up to 5 Mbps, with payload lengths up to 64 bytes. The R7FS3A77C2A01CBJ#AC1's CAN FD module includes hardware timestamping, error counters, and automatic retransmission - essential for deterministic automotive and industrial networking.
What security features are implemented in hardware on the R7FS3A77C2A01CBJ#AC1?
The R7FS3A77C2A01CBJ#AC1 includes dedicated hardware accelerators for AES-128/256 (ECB/CBC/CTR/GCM modes), SHA-256, ECDSA signature generation/verification, and a NIST-certified TRNG. It also supports secure boot with immutable root-of-trust, tamper detection (voltage, frequency, temperature), and memory protection unit (MPU) enforcement. These features are accessible via Renesas' Trusted Secure IP (TSIP)-Lite API within the SSP.
Is the R7FS3A77C2A01CBJ#AC1 pin-compatible with other S3A7 group MCUs?
No - the R7FS3A77C2A01CBJ#AC1 uses a 100-pin LQFP package, while other S3A7 variants (e.g., R7FS3A77H2A01CFB#AC0) use 144-pin LQFP. Pin assignments differ significantly between packages due to added peripherals like Ethernet MAC. Migration requires PCB redesign. However, the R7FS3A77C2A01CBJ#AC1 shares identical register mapping, memory layout, and software APIs with all S3A7 devices, ensuring full firmware portability.
What development tools and software support are available for the R7FS3A77C2A01CBJ#AC1?
The R7FS3A77C2A01CBJ#AC1 is fully supported by Renesas e² studio IDE, the Synergy Software Package (SSP) v3.x, and the Synergy Configuration Tool. It works with the SK-S3A7 starter kit and DK-S3A7 development kit. SSP provides certified middleware (FreeRTOS, USBX, NetX Duo), HAL drivers, and security libraries - all validated for the R7FS3A77C2A01CBJ#AC1. Debugging uses standard SWD via J-Link or E2 Lite emulator.
R7FS3A77C2A01CBJ#AC1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 121-LFBGA
- Series:
- Renesas Synergy™ S3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, MMC/SD, QSPI, SCI, SPI, UART/USART, USB
- Peripherals:
- DMA, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 102
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 192K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 26x14b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FS3A77C2A01CBJ#AC1 FAQ
1.How can I place an order for R7FS3A77C2A01CBJ#AC1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FS3A77C2A01CBJ#AC1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R7FS3A77C2A01CBJ#AC1 reliable?
The price and inventory of R7FS3A77C2A01CBJ#AC1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FS3A77C2A01CBJ#AC1 is usually 5 days.
3.What payment methods are accepted for R7FS3A77C2A01CBJ#AC1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FS3A77C2A01CBJ#AC1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FS3A77C2A01CBJ#AC1?
R7FS3A77C2A01CBJ#AC1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FS3A77C2A01CBJ#AC1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R7FS3A77C2A01CBJ#AC1?
For technical support, including R7FS3A77C2A01CBJ#AC1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FS3A77C2A01CBJ#AC1 requirements.
6.How does Aetrix verify that R7FS3A77C2A01CBJ#AC1 is sourced from the original manufacturer or authorized distributors?
All R7FS3A77C2A01CBJ#AC1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R7FS3A77C2A01CBJ#AC1 meets industry standards.
7.What is the process for return or replacement of R7FS3A77C2A01CBJ#AC1?
All R7FS3A77C2A01CBJ#AC1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FS3A77C2A01CBJ#AC1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R7FS3A77C2A01CBJ#AC1 part is unused and in its original packaging.
Return procedure for R7FS3A77C2A01CBJ#AC1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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