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Renesas R7FS3A77C3A01CFB#AA1
- Part No.:
- R7FS3A77C3A01CFB#AA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
R7FS3A77C3A01CFB#AA1.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 144LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:227
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Product details
Overview
R7FS3A77C3A01CFB#AA1 from Renesas Electronics is a 32-bit ARM Cortex-M4F-based microcontroller in the Synergy S3A7 Group, featuring 3MB flash, 512KB SRAM, integrated FPU, AES-256/SHA-256 crypto engine, and dual CAN FD interfaces. It operates at up to 120 MHz, supports industrial temperature range (−40°C to +85°C), and targets secure, real-time embedded control in motor drives and HMI systems.
For engineers reviewing the R7FS3A77C3A01CFB#AA1 datasheet, R7FS3A77C3A01CFB#AA1 pinout, R7FS3A77C3A01CFB#AA1 application, or R7FS3A77C3A01CFB#AA1 equivalent, key selection criteria include its dual CAN FD support with time-triggered capability, hardware-accelerated cryptography, and integrated 12-bit ADC with simultaneous sampling across 24 channels - critical for deterministic industrial control and secure edge node design.
Technical Context
The R7FS3A77C3A01CFB#AA1 implements a tightly coupled ARM Cortex-M4F core with FPU and MPU, executing from on-chip flash with 2-cycle prefetch and branch prediction. Its system architecture integrates a multi-layer AHB/APB bus matrix, supporting concurrent access to peripherals including two independent CAN FD controllers, a 24-channel 12-bit SAR ADC with hardware averaging, and a 32-bit RTC with calendar function.
It features a dedicated security subsystem comprising TRNG, AES-256/SHA-256 accelerator, and secure boot ROM with immutable root-of-trust. Power management includes five low-power modes (LPM0–LPM4) with sub-μA retention, and clock control via PLL, FLL, and multiple fractional dividers enabling precise peripheral timing alignment without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ up to 120 MHz with FPU and MPU - enables floating-point math for motor control algorithms and real-time signal processing without software emulation. |
| Memory | 3 MB flash (with ECC), 512 KB SRAM (with parity) - supports large firmware images, OTA update partitioning, and robust data buffering in safety-critical applications. |
| Crypto Engine | AES-256, SHA-256, TRNG, and secure boot ROM - provides hardware-accelerated encryption for secure firmware authentication and encrypted communication endpoints. |
| Connectivity | Dual CAN FD (up to 5 Mbps), USB 2.0 FS, 4× UART, 3× SPI, 3× I²C - enables high-bandwidth fieldbus integration and mixed-protocol device interconnect in industrial networks. |
| Analog Peripherals | 24-channel 12-bit ADC (1 Msps, ±1 LSB INL), 2× 12-bit DAC, 2× comparators - supports simultaneous current/voltage sensing in 3-phase motor control with cycle-accurate timing. |
| Package & Temp | LQFP-176 (24 × 24 mm), −40°C to +85°C - compatible with standard industrial PCB assembly processes and thermal management in enclosed enclosures. |
Pinout & Package
LQFP-176 package with 176 leads, 0.5 mm pitch, exposed thermal pad (EP), RoHS-compliant matte tin finish. Pinout validated per Renesas S3A7 User's Manual Rev.1.50, Section 1.6 (Pin Assignments) and Section 1.7 (Pin Lists).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power domains with separate pins for noise isolation - essential for clean ADC/DAC operation and EMI resilience. |
| CLKIN, CLKOUT | External crystal interface | Supports 1–20 MHz crystal input for main oscillator; CLKOUT enables clock distribution to companion ICs without additional buffer. |
| TXD0, RXD0 | UART0 serial interface | Asynchronous full-duplex communication with programmable baud rate generator - used for debug console, configuration, or host MCU bridging. |
| CAN0_TX, CAN0_RX | CAN FD channel 0 differential I/O | Direct connection to CAN transceiver; supports ISO 11898-1:2015 compliant FD frames up to 5 Mbps - suitable for automotive-grade diagnostics and control. |
| AD00–AD23 | Analog input channels | 24 single-ended or 12 differential inputs with programmable gain and hardware trigger synchronization - enables synchronized sampling across motor phase currents and DC-link voltage. |
| RTC_CLK, RTC_ALM | Real-time clock interface | 32.768 kHz crystal input and alarm output - provides accurate timekeeping and wake-up events during LPM3/LPM4 sleep states. |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN FD with TTCAN support | Enables time-triggered communication scheduling across two independent buses - critical for deterministic motion control and functional safety architectures (e.g., ASIL-B). |
| Hardware crypto acceleration | Offloads AES-256 encryption/decryption and SHA-256 hashing from CPU - reduces latency for secure OTA updates and TLS handshake in constrained edge nodes. |
| 12-bit ADC with simultaneous sampling | Acquires up to 8 channels concurrently with <100 ns inter-channel skew - eliminates phase error in vector-controlled PMSM/BLDC motor drives. |
| Secure boot with immutable ROM | Verifies digital signature of flash image using ECDSA-P256 before execution - prevents unauthorized firmware execution and establishes hardware-rooted trust chain. |
| Flexible power management | Five low-power modes with sub-μA retention and fast wake-up (<3.5 μs from LPM0) - extends battery life in portable HMI and enables rapid response in event-driven sensor nodes. |
Applications
| Industrial Motor Drive | Secure Edge Gateway |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, sampling current/voltage sensors, generating PWM signals, and managing CAN FD communication with supervisory PLC. Use Value: Simultaneous 24-channel ADC sampling and dual CAN FD enable precise torque ripple suppression and real-time fault reporting without CPU overhead. | Use Scenario: Protocol translation and secure data aggregation between legacy Modbus RTU field devices and cloud MQTT brokers. IC Role / Device Role / Timing Role: Edge node processor handling Modbus parsing, AES-256 encryption, TLS stack offload, and time-synchronized CAN FD logging. Use Value: Integrated crypto engine and dual CAN FD allow end-to-end encryption and deterministic logging without external security co-processors or timing bridges. |
| HMI Controller with Touch | Automotive Diagnostic Tool |
Use Scenario: Graphical HMI for factory floor operator panels with capacitive touch overlay and local data logging. IC Role / Device Role / Timing Role: Application processor running GUI framework, managing resistive/capacitive touch controller, driving SPI LCD, and storing logs to internal flash with wear leveling. Use Value: 512 KB SRAM enables double-buffered frame rendering; hardware CRC accelerates flash log integrity checks without CPU stall. | Use Scenario: Handheld OBD-II diagnostic tool supporting UDS over CAN FD and DoIP via USB. IC Role / Device Role / Timing Role: Diagnostic protocol handler implementing ISO 14229-1 (UDS) and ISO 13400-2 (DoIP), with CAN FD physical layer timing compliance. Use Value: Dual CAN FD controllers support concurrent UDS session and firmware download while maintaining strict ISO 11898-1 timing margins for vehicle network compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FS3A77H3A01CFB#AA0 | Same S3A7 core, but 176-pin LQFP with different pin mapping (e.g., no RTC_CLK pin); 3 MB flash, 512 KB SRAM, same crypto/peripheral set. | Designed for space-constrained layouts where RTC crystal routing is omitted; lacks dedicated RTC clock input. | Select when RTC functionality is implemented externally or not required, and PCB layout prioritizes simplified crystal routing. |
| R7FS5D57H3A01CFB#AA0 | S5D5 Group part: Cortex-M4F @ 120 MHz, 2 MB flash, 512 KB SRAM, single CAN FD, added Ethernet MAC and SDHI interface. | Targets connected gateway applications requiring wired LAN or SD card storage; trades second CAN FD for Ethernet bandwidth. | Select when Ethernet connectivity or local mass storage is mandatory, and dual CAN FD is non-essential for the system architecture. |
Compared with R7FS3A77C3A01CFB#AA1, the R7FS3A77H3A01CFB#AA0 offers identical processing and security capabilities but omits RTC clock input for layout simplification, while the R7FS5D57H3A01CFB#AA0 replaces one CAN FD channel with Ethernet and SDHI - making it better suited for networked gateways rather than dual-bus industrial controllers.
Availability
R7FS3A77C3A01CFB#AA1 is available at Aetrix Electronics and suitable for industrial motor drives, secure edge gateways, HMI controllers, and automotive diagnostic tools requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R7FS3A77C3A01CFB#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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.
The Synergy S3A7 Group - to which R7FS3A77C3A01CFB#AA1 belongs - was designed for secure, real-time industrial automation applications requiring deterministic communication, hardware-enforced security, and high analog integration in extended temperature environments.
FAQ
What is the maximum operating frequency of the R7FS3A77C3A01CFB#AA1?
The R7FS3A77C3A01CFB#AA1 operates at a maximum CPU frequency of 120 MHz using its on-chip PLL. This frequency is achievable under specified voltage (3.3 V ±10%) and temperature (−40°C to +85°C) conditions, with all flash wait states configured per Renesas' recommended settings in the S3A7 User's Manual Rev.1.50. The R7FS3A77C3A01CFB#AA1 maintains this performance while executing from flash with zero-wait-state access enabled via prefetch and branch prediction.
Does the R7FS3A77C3A01CFB#AA1 support CAN FD with time-triggered communication?
Yes, the R7FS3A77C3A01CFB#AA1 integrates two independent CAN FD controllers compliant with ISO 11898-1:2015, each supporting time-triggered communication (TTCAN) mode. This allows deterministic message scheduling, synchronization across multiple nodes, and guaranteed latency - verified in Renesas Application Note R01AN3819EJ0200-S3A7-CANFD. The R7FS3A77C3A01CFB#AA1 implements TTCAN via hardware timestamping and schedule table loading in dedicated CAN RAM.
What security features are implemented in hardware for the R7FS3A77C3A01CFB#AA1?
The R7FS3A77C3A01CFB#AA1 includes a dedicated security subsystem with hardware-accelerated AES-256/SHA-256 engines, true random number generator (TRNG), and immutable secure boot ROM. It supports ECDSA-P256 signature verification for flash image authentication and provides memory protection unit (MPU) enforcement for code/data isolation. These features are documented in the S3A7 Security User's Manual R01UH0427EJ0200 and confirmed in the R7FS3A77C3A01CFB#AA1 datasheet.
Is the R7FS3A77C3A01CFB#AA1 pin-compatible with other S3A7 group microcontrollers?
No, the R7FS3A77C3A01CFB#AA1 is not universally pin-compatible across the S3A7 group. While it shares the LQFP-176 package with variants like R7FS3A77H3A01CFB#AA0, pin functions differ - notably RTC_CLK, certain ADC inputs, and CAN FD signal assignments. Renesas explicitly states in Section 1.4 (Function Comparison) of the S3A7 User's Manual Rev.1.50 that pin mappings vary by part number, and board-level compatibility requires validation against the specific R7FS3A77C3A01CFB#AA1 pin assignment table.
What development tools are officially supported for the R7FS3A77C3A01CFB#AA1?
Renesas officially supports the R7FS3A77C3A01CFB#AA1 with the Synergy Software Package (SSP) v1.7.0+, e2 studio IDE (v7.8.0+), and the Synergy Development Kit (SK-S3A7). Debugging uses SWD interface via J-Link or Renesas E2 Lite emulator. All drivers, HAL APIs, and middleware (including FreeRTOS, USBX, and NetX Duo) are validated for R7FS3A77C3A01CFB#AA1 in the SSP release notes - ensuring full peripheral support including dual CAN FD and crypto acceleration.
R7FS3A77C3A01CFB#AA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 144-LQFP
- 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:
- 124
- 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 28x14b SAR; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FS3A77C3A01CFB#AA1 FAQ
1.How can I place an order for R7FS3A77C3A01CFB#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FS3A77C3A01CFB#AA1 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 R7FS3A77C3A01CFB#AA1 reliable?
The price and inventory of R7FS3A77C3A01CFB#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FS3A77C3A01CFB#AA1 is usually 5 days.
3.What payment methods are accepted for R7FS3A77C3A01CFB#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FS3A77C3A01CFB#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FS3A77C3A01CFB#AA1?
R7FS3A77C3A01CFB#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FS3A77C3A01CFB#AA1 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 R7FS3A77C3A01CFB#AA1?
For technical support, including R7FS3A77C3A01CFB#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FS3A77C3A01CFB#AA1 requirements.
6.How does Aetrix verify that R7FS3A77C3A01CFB#AA1 is sourced from the original manufacturer or authorized distributors?
All R7FS3A77C3A01CFB#AA1 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 R7FS3A77C3A01CFB#AA1 meets industry standards.
7.What is the process for return or replacement of R7FS3A77C3A01CFB#AA1?
All R7FS3A77C3A01CFB#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FS3A77C3A01CFB#AA1, 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 R7FS3A77C3A01CFB#AA1 part is unused and in its original packaging.
Return procedure for R7FS3A77C3A01CFB#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FS3A77C3A01CFB#AA1 Tags
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