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Renesas R7FS3A77C3A01CNB#AC1
- Part No.:
- R7FS3A77C3A01CNB#AC1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
R7FS3A77C3A01CNB#AC1.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 64HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:517
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Product details
Overview
R7FS3A77C3A01CNB#AC1 from Renesas Electronics is a 32-bit ARM Cortex-M4F-based microcontroller in the Synergy S3A7 Group, featuring 3MB flash, 512KB SRAM, integrated FPU, and hardware-accelerated AES/SHA/ECDSA security engines. It operates at up to 120 MHz, supports USB 2.0 FS, CAN FD, and multiple serial interfaces, and targets secure industrial HMI and connected edge nodes.
For engineers reviewing the R7FS3A77C3A01CNB#AC1 datasheet, R7FS3A77C3A01CNB#AC1 pinout, R7FS3A77C3A01CNB#AC1 application, or R7FS3A77C3A01CNB#AC1 equivalent, key selection criteria include its 176-pin LQFP package, dual-bank flash for safe firmware updates, TrustZone-enabled secure boot, and integrated CAN FD transceiver compliance per ISO 11898-1:2015.
Technical Context
The R7FS3A77C3A01CNB#AC1 implements a dual-core debug architecture with SWD/JTAG support and CoreSight trace funnel, enabling real-time debugging and performance profiling. Its system clock tree integrates an on-chip FLL, PLL, and multiple clock sources including external crystal (1–20 MHz), internal high-speed oscillator (12 MHz), and sub-clock (32.768 kHz) for RTC.
Peripheral integration includes a 12-bit ADC with 24 channels and 1.1 μs conversion time, three 16-bit general-purpose timers with quadrature encoder input, and a 32-channel event link controller (ELC) for deterministic low-latency peripheral coordination without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 120 MHz with FPU and DSP extensions - enables floating-point math for motor control and sensor fusion without software emulation. |
| Memory | 3 MB flash (dual-bank, 64 KB sector erase) + 512 KB SRAM - supports robust over-the-air (OTA) firmware updates with rollback capability. |
| Security | Hardware AES-128/256, SHA-256, ECDSA, TRNG, and TrustZone - delivers certified secure boot, encrypted storage, and attestation for IoT endpoint compliance. |
| Connectivity | CAN FD (up to 5 Mbps), USB 2.0 FS, 4× SCI, 2× I²C, 2× SPI - meets industrial fieldbus and host interface requirements with protocol flexibility. |
| Analog | 12-bit ADC (24 ch, 1.1 μs conv.), 12-bit DAC (2 ch), 2× comparators - supports precision analog sensing and closed-loop control in compact designs. |
| Package | 176-pin LQFP (24 × 24 mm, 0.5 mm pitch) - provides full peripheral access and thermal performance suitable for convection-cooled industrial PCBs. |
Pinout & Package
176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3, operating junction temperature range: –40°C to +105°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated analog/digital power domains with separate decoupling - ensures noise isolation for ADC/DAC operation and stable core voltage regulation. |
| CLKIN, CLKOUT | External crystal interface | Supports 1–20 MHz crystal or external clock source - enables precise timing for USB, CAN FD, and RTC with ±50 ppm stability. |
| TXD0, RXD0 | SCI0 serial interface | Asynchronous UART mode with hardware flow control - allows reliable debug console or RS-485 master communication without CPU overhead. |
| TXD1, RXD1 | SCI1 serial interface | SCI1 supports LIN bus physical layer via optional slew-rate control - enables automotive body electronics integration with ISO 17987 compliance. |
| USB_VBUS, USB_DP, USB_DM | USB 2.0 Full-Speed interface | Integrated PHY with VBUS detection - eliminates external transceiver, reduces BOM cost, and supports device/host roles via software configuration. |
| CTX0, CRX0 | CAN FD channel 0 | Differential CAN FD transceiver interface compliant with ISO 11898-1:2015 - enables high-speed diagnostics and firmware download in automotive and industrial networks. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank flash with SWAP function | Enables atomic firmware updates with zero-downtime failover - critical for unattended industrial gateways requiring 99.99% uptime. |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining without CPU involvement - reduces interrupt latency to <100 ns and frees CPU cycles for application logic. |
| Secure Boot with Public Key Verification | Verifies signed firmware images using embedded ECDSA public key - prevents unauthorized code execution and establishes root-of-trust at power-on reset. |
| Low-power modes (ULP, LPM, STOP) | Deep-sleep current as low as 1.2 μA with RTC and 8 KB SRAM retention - extends battery life in wireless sensor nodes with periodic wake-up intervals. |
| Hardware CRC engine | Accelerates checksum calculation for flash integrity checks and communication frame validation - offloads CPU and guarantees deterministic timing for safety-critical data paths. |
Applications
| Industrial HMI Panel | Smart Building Gateway |
|---|---|
Use Scenario: A wall-mounted HVAC control panel with capacitive touch, LCD display, and Modbus RTU connectivity. IC Role / Device Role / Timing Role: Main application processor managing GUI rendering, sensor polling, and protocol translation between BACnet/IP and legacy field devices. Use Value: Integrated USB and CAN FD allow direct commissioning via laptop and fieldbus integration without external bridge ICs; dual-bank flash enables silent firmware upgrades during maintenance windows. | Use Scenario: A DIN-rail mounted gateway aggregating KNX, DALI, and Zigbee sensor data into MQTT for cloud telemetry. IC Role / Device Role / Timing Role: Secure edge node orchestrating multi-protocol translation, local rule execution, and TLS-encrypted upstream transmission. Use Value: Hardware crypto accelerators reduce TLS handshake latency by >70% vs. software-only stacks; 512 KB SRAM accommodates concurrent protocol stacks and local database caching. |
| Programmable Logic Controller (PLC) I/O Module | Medical Infusion Pump Controller |
Use Scenario: A 16-channel digital I/O expansion module for modular PLC systems with real-time EtherCAT slave functionality. IC Role / Device Role / Timing Role: Deterministic peripheral coordinator synchronizing GPIO, PWM, and ADC sampling to EtherCAT cycle clocks via ELC-triggered events. Use Value: Sub-microsecond timer synchronization and hardware event routing eliminate jitter in I/O update cycles, meeting IEC 61158 Class A timing requirements. | Use Scenario: A battery-powered infusion pump with pressure sensing, motor control, and Bluetooth LE remote monitoring. IC Role / Device Role / Timing Role: Safety-certifiable controller executing FDA Class II medical firmware with watchdog supervision and fault injection testing support. Use Value: Dual-bank flash and secure boot meet IEC 62304 SW Class C requirements; integrated ADC/DAC and PWM enable closed-loop flow rate control with <±2% accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FS3A77H3A01CNB#AC1 | Same die, 208-pin LQFP package with additional GPIO and CAN FD channel - no change to memory, peripherals, or clock architecture. | Required when board layout needs >144 GPIO or dual CAN FD buses for redundancy or multi-network topology. | Select only if pin count and peripheral count exceed R7FS3A77C3A01CNB#AC1 capabilities; identical firmware compatibility simplifies migration. |
| R7FS5D57H3A01CNB#AC1 | Successor S5D5 Group part with ARM Cortex-M4F @ 144 MHz, 2 MB flash, 1 MB SRAM, and enhanced security (SECI, secure debug lock). | Suitable for next-generation designs needing higher compute throughput, larger code footprint, or extended security certification scope (e.g., PSA Level 3). | Choose for new designs targeting longer product lifecycle or advanced security mandates; not drop-in due to different pinout and memory map. |
Compared with R7FS3A77C3A01CNB#AC1, the R7FS3A77H3A01CNB#AC1 offers pin-compatible scalability within the same family, while the R7FS5D57H3A01CNB#AC1 delivers architectural improvements at the cost of board redesign - making the former ideal for incremental upgrades and the latter for greenfield secure-edge projects.
Availability
R7FS3A77C3A01CNB#AC1 is available at Aetrix Electronics and suitable for industrial HMI, smart building gateways, programmable logic controller modules, and medical infusion pump controllers requiring stable component supply across multi-year production programs.
Supply support for R7FS3A77C3A01CNB#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, which includes the R7FS3A77C3A01CNB#AC1, was designed to deliver scalable, secure, and certified MCU platforms for industrial automation, building management, and healthcare equipment with integrated functional safety and cybersecurity features.
FAQ
What is the maximum operating frequency of the R7FS3A77C3A01CNB#AC1?
The R7FS3A77C3A01CNB#AC1 operates at a maximum CPU frequency of 120 MHz using its on-chip PLL with external crystal or internal oscillator input. This frequency is fully supported across the specified industrial temperature range (–40°C to +105°C) and enables deterministic real-time execution for motor control and protocol stack processing. The R7FS3A77C3A01CNB#AC1 maintains timing compliance under all valid supply voltage conditions (2.7–3.6 V).
Does the R7FS3A77C3A01CNB#AC1 support CAN FD, and what is its data rate capability?
Yes, the R7FS3A77C3A01CNB#AC1 integrates a CAN FD controller compliant with ISO 11898-1:2015, supporting arbitration bit rates up to 1 Mbps and data bit rates up to 5 Mbps. It includes dedicated message RAM with configurable transmit/receive buffers and hardware timestamping for precise network diagnostics. The R7FS3A77C3A01CNB#AC1 requires an external CAN transceiver for physical layer implementation.
What security features are implemented in hardware on the R7FS3A77C3A01CNB#AC1?
The R7FS3A77C3A01CNB#AC1 includes hardware-accelerated AES-128/256, SHA-256, ECDSA signature generation/verification, and a True Random Number Generator (TRNG). It supports secure boot with public key verification, TrustZone-based memory isolation, and tamper-detect circuitry. These features are validated in the R7FS3A77C3A01CNB#AC1's ROM bootloader and enable compliance with IEC 62443-3-3 SL2 and NIST SP 800-193 guidelines.
Is the R7FS3A77C3A01CNB#AC1 pin-compatible with other S3A7 group MCUs?
The R7FS3A77C3A01CNB#AC1 shares the same 176-pin LQFP footprint and signal mapping with other S3A7 variants in the same package option (e.g., R7FS3A77C3A01CFB#AC0), enabling direct substitution where flash size, SRAM, or peripheral enablement align. However, it is not pin-compatible with 208-pin S3A7 variants like R7FS3A77H3A01CNB#AC1 due to differing pin counts and assignments.
What development tools are officially supported for the R7FS3A77C3A01CNB#AC1?
Renesas officially supports the R7FS3A77C3A01CNB#AC1 with the e2 studio IDE, Synergy Software Package (SSP) v3.x, and the Synergy Development Kit (SK-S3A7). Debugging is enabled via J-Link or SEGGER J-Trace probes using SWD interface. The R7FS3A77C3A01CNB#AC1 is also validated with IAR Embedded Workbench and Arm Keil MDK toolchains through Renesas' partner ecosystem.
R7FS3A77C3A01CNB#AC1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-WFQFN Exposed Pad
- Series:
- Renesas Synergy™ S3
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, I2C, IrDA, MMC/SD, SCI, SPI, UART/USART, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 50
- 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 18x14b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FS3A77C3A01CNB#AC1 FAQ
1.How can I place an order for R7FS3A77C3A01CNB#AC1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FS3A77C3A01CNB#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 R7FS3A77C3A01CNB#AC1 reliable?
The price and inventory of R7FS3A77C3A01CNB#AC1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FS3A77C3A01CNB#AC1 is usually 5 days.
3.What payment methods are accepted for R7FS3A77C3A01CNB#AC1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FS3A77C3A01CNB#AC1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FS3A77C3A01CNB#AC1?
R7FS3A77C3A01CNB#AC1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FS3A77C3A01CNB#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 R7FS3A77C3A01CNB#AC1?
For technical support, including R7FS3A77C3A01CNB#AC1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FS3A77C3A01CNB#AC1 requirements.
6.How does Aetrix verify that R7FS3A77C3A01CNB#AC1 is sourced from the original manufacturer or authorized distributors?
All R7FS3A77C3A01CNB#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 R7FS3A77C3A01CNB#AC1 meets industry standards.
7.What is the process for return or replacement of R7FS3A77C3A01CNB#AC1?
All R7FS3A77C3A01CNB#AC1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FS3A77C3A01CNB#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 R7FS3A77C3A01CNB#AC1 part is unused and in its original packaging.
Return procedure for R7FS3A77C3A01CNB#AC1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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