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Renesas R7FS3A37A3A01CNB#AA0
- Part No.:
- R7FS3A37A3A01CNB#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
R7FS3A37A3A01CNB#AA0.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:348
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Product details
Overview
R7FS3A37A3A01CNB#AA0 from Renesas is a 48-MHz Arm Cortex-M4 microcontroller with FPU, 512-KB code flash, 96-KB SRAM, and integrated Segment LCD Controller (SLCDC), Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed, 14-bit ADC, 12-bit DAC, CAN, QSPI, SDHI, and hardware security (SCE5/AES256/TRNG). It targets industrial HMI, smart meters, and battery-backed embedded control systems requiring real-time responsiveness, low-power operation, and secure firmware execution.
For engineers reviewing the R7FS3A37A3A01CNB#AA0 datasheet, R7FS3A37A3A01CNB#AA0 pinout, R7FS3A37A3A01CNB#AA0 application, or R7FS3A37A3A01CNB#AA0 equivalent, key selection considerations include its 64-pin QFN package (PWQN0064LA-A), –40°C to +105°C operating range, 49 I/O pins (7 × 5-V tolerant), dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and support for USB Battery Charging Specification 1.2 - all critical for ruggedized, safety-aware, and human-interface–centric designs.
Technical Context
This MCU implements an Armv7E-M architecture with DSP extensions and single-precision FPU, enabling deterministic floating-point math for motor control and sensor fusion. Its memory subsystem includes 512-KB code flash with 8-KB data flash (100,000 erase/write cycles), 96-KB SRAM split into 80-KB parity and 16-KB ECC regions, and Memory Mirror Function (MMF) for flexible firmware relocation without linker changes.
The peripheral set is tightly coupled via the Event Link Controller (ELC), allowing autonomous interaction between modules - e.g., ADC conversion completion triggering DMA transfer to SRAM, or RTC alarm waking AGT timer without CPU intervention. Clock management integrates six oscillators (MOSC, SOSC, HOCO/MOCO/LOCO, IWDT-OSC) with CAC-based accuracy monitoring and trim support for HOCO/MOCO/LOCO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 @ 48 MHz with FPU and MPU (8 regions) |
| Memory | 512-KB code flash + 8-KB data flash + 96-KB SRAM (80-KB parity / 16-KB ECC) |
| Analog | 14-bit ADC (28 ch), 12-bit DAC (1 ch), 2× ACMPLP, 4× OPAMP, TSN |
| Connectivity | USB 2.0 FS (on-chip transceiver, BC 1.2), CAN 2.0B, 6× SCI, 3× I2C, 2× SPI, QSPI, SDHI, SSIE |
| Timers & Control | GPT32 ×4, GPT16 ×6, AGT ×2, RTC with calendar/battery backup, WDT/IWDT |
| Security & Safety | SCE5 (AES128/256, GHASH, TRNG), CRC calculator, DOC, CAC, register write protection |
| HMI Support | SLCDC (54 seg × 4 com), CTSU (27 electrodes), 49 GPIO (7 × 5-V tolerant) |
| Package & Environment | 64-pin QFN (8 mm × 8 mm, 0.4 mm pitch), –40°C to +105°C |
Pinout & Package
Packaged in a 64-pin QFN (PWQN0064LA-A) with 0.4 mm pitch, this device features exposed thermal pad, 49 general-purpose I/O pins (including 7 × 5-V tolerant), and dedicated debug (SWDIO/SWCLK/SWO), clock (XTAL/EXTAL/XCIN/XCOUT), power (VCC/VSS/VBATT/VCL), and interface (USB D+/D–, CAN TX/RX, QSPI IO0–IO3, SDHI CLK/CMD/DAT) terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary 1.6–5.5 V core power domain; decoupling required per Renesas layout guidelines |
| VBATT | Battery backup input | Supplies RTC, SOSC, LOCO, and backup registers during main power loss |
| XTAL / EXTAL | Main crystal oscillator interface | Supports 1–20 MHz crystals; enables high-accuracy timing for USB/RTC/critical peripherals |
| XCIN / XCOUT | Sub-clock oscillator interface | 32.768 kHz crystal connection for RTC calendar mode and low-power wake-up |
| SWDIO / SWCLK / SWO | Serial Wire Debug interface | Enables full JTAG/SWD debugging, trace, and programming without external emulator |
| USB_DP / USB_DM | USB 2.0 Full-Speed differential pair | On-chip transceiver supports device/host modes and BC 1.2 charging negotiation |
| TXD0 / RXD0 | SCI0 UART interface | Asynchronous serial communication with FIFO support; used for bootloader and diagnostics |
| QSPI_IO0–IO3 | Quad SPI data lines | Direct interface to serial flash/FeRAM; enables XIP and fast firmware updates |
Key Features
| Feature | Design Value |
|---|---|
| Segment LCD Controller (SLCDC) | Drives up to 54 segments × 4 commons or 50 segments × 8 commons with internal voltage boost and contrast control - eliminates external LCD bias circuitry |
| Capacitive Touch Sensing Unit (CTSU) | 27-electrode capacitive sensing with noise immunity and auto-tuning - enables robust touch buttons/sliders on metal-over-glass or plastic overlays |
| USB Battery Charging 1.2 Support | Dedicated USB LDO and detection logic enable compliant downstream port (DCP), charging downstream port (CDP), and standard downstream port (SDP) identification |
| Memory Protection Architecture | Arm MPU (8 regions) + SRAM ECC + Flash area protection + illegal access detection - meets IEC 61508 SIL2 functional safety requirements |
| Low-Power Asynchronous Timers (AGT) | Two 16-bit independent timers running on LOCO (32.768 kHz) - sustain precise wake-up intervals during deep-sleep modes without CPU clock |
| Secure Crypto Engine 5 (SCE5) | Hardware-accelerated AES128/256, GHASH, and TRNG - enables secure boot, OTA update signing, and encrypted storage without software overhead |
Applications
| Industrial Smart Metering | Medical Patient Monitor HMI |
|---|---|
|
Use Scenario: Residential/commercial electricity meter with LCD display, tamper detection, and secure firmware updates over isolated RS-485 or NB-IoT modem. IC Role / Device Role / Timing Role: Primary system controller managing energy measurement (via ADC14), LCD refresh (SLCDC), secure communication (SCE5 + USB/SCI), and RTC-based billing cycles. Use Value: Integrated 14-bit ADC and ECC SRAM ensure metrology-grade accuracy and data integrity; SCE5 enables cryptographically signed firmware validation before execution. |
Use Scenario: Portable patient monitor with capacitive touch UI, ECG signal conditioning, and battery-backed real-time logging. IC Role / Device Role / Timing Role: Central HMI processor handling touch input (CTSU), analog front-end (OPAMP/ADC14/ACMPLP), segment LCD output (SLCDC), and low-power data logging (RTC + SDHI). Use Value: On-chip OPAMPs and 14-bit ADC eliminate external signal chain components; VBATT-powered RTC maintains time across battery swaps without data loss. |
| Automotive Body Control Module | Home Appliance Control Panel |
|
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with CAN bus integration and fault reporting. IC Role / Device Role / Timing Role: CAN node controller interfacing with vehicle network, driving motor drivers (via GPT PWM), and monitoring switches/sensors (GPIO + ACMPLP). Use Value: CAN 2.0B compliance and 32-mailbox FIFO reduce CPU load during burst traffic; IWDT ensures fail-safe reset if CAN stack hangs. |
Use Scenario: Washing machine control panel with segmented LCD, touch keys, temperature sensing, and motor control feedback. IC Role / Device Role / Timing Role: Main UI controller managing CTSU touch keys, SLCDC display, TSN-based temperature monitoring, and GPT-driven motor phase timing. Use Value: Integrated CTSU and SLCDC reduce BOM cost vs. external touch/LCD controllers; 48-MHz Cortex-M4 handles real-time PID loop for drum speed regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FS3A37A3A01CFM | Same core/peripherals but in 64-pin LQFP (PLQP0064KB-C); no QFN thermal pad | LQFP simplifies hand-soldering and rework; lower thermal performance than QFN under sustained 48-MHz load | Select R7FS3A37A3A01CFM for prototyping or low-volume production where thermal headroom is sufficient and PCB assembly constraints favor LQFP. |
| R7FS3A37A2A01CLJ | 100-pin LGA variant with identical feature set but rated for –40°C to +85°C only; 81 I/O pins vs. 49 | Higher I/O count supports expanded sensor/actuator interfaces; narrower temp range excludes automotive under-hood use | Choose R7FS3A37A2A01CLJ when additional GPIOs are needed and extended temperature operation is not required. |
Compared with R7FS3A37A3A01CNB#AA0, the LQFP alternative offers easier assembly at the cost of thermal efficiency, while the LGA variant trades package compactness for broader I/O availability and reduced temperature rating - making R7FS3A37A3A01CNB#AA0 optimal for space-constrained, thermally demanding, and extended-temperature industrial HMI deployments.
Availability
R7FS3A37A3A01CNB#AA0 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, and medical device control applications requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for R7FS3A37A3A01CNB#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of microcontroller innovation.
R7FS3A37A3A01CNB#AA0 belongs to the Renesas Synergy™ S3A3 microcontroller group, designed specifically for scalable, secure, and low-power human-machine interface applications - integrating LCD/CTSU, USB, CAN, and hardware crypto in a single chip to accelerate development of intelligent edge devices.
FAQ
What is the maximum operating frequency and core architecture of the R7FS3A37A3A01CNB#AA0?
The R7FS3A37A3A01CNB#AA0 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 Arm Memory Protection Unit (MPU) supporting eight memory regions. This configuration delivers deterministic real-time performance for motor control, sensor processing, and HMI rendering tasks within the R7FS3A37A3A01CNB#AA0's thermal envelope.
Does the R7FS3A37A3A01CNB#AA0 support USB device and host functionality?
Yes, the R7FS3A37A3A01CNB#AA0 integrates a USB 2.0 Full-Speed (USBFS) module capable of operating in both device and host modes. It includes an on-chip transceiver with integrated 3.3-V LDO regulator and complies with USB Battery Charging Specification 1.2 for DCP/CDP/SDP detection. The module supports all USB 2.0 transfer types and provides up to 10 configurable pipes, enabling direct connectivity to USB peripherals or PC hosts without external PHY components in the R7FS3A37A3A01CNB#AA0 design.
What analog peripherals are integrated into the R7FS3A37A3A01CNB#AA0?
The R7FS3A37A3A01CNB#AA0 integrates a comprehensive analog subsystem: a 14-bit successive approximation ADC (ADC14) with up to 28 input channels, a 12-bit DAC (DAC12) with output amplifier, two 8-bit DACs (DAC8) dedicated to ACMPLP reference generation, two low-power analog comparators (ACMPLP), four operational amplifiers (OPAMP), and an on-die temperature sensor (TSN). These peripherals are fully accessible via the R7FS3A37A3A01CNB#AA0's 49 GPIO pins and support simultaneous sampling, calibration, and low-power operation.
How does the R7FS3A37A3A01CNB#AA0 support functional safety and security requirements?
The R7FS3A37A3A01CNB#AA0 incorporates multiple hardware-level safety and security features: SRAM ECC and parity error detection, Flash area protection, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT), register write protection, and illegal memory access detection. For security, it includes the Secure Crypto Engine 5 (SCE5) supporting AES128/256 encryption, GHASH, and True Random Number Generation (TRNG). These capabilities enable R7FS3A37A3A01CNB#AA0 to meet IEC 61508 SIL2 and secure boot requirements without external co-processors.
What is the package type and thermal specification of the R7FS3A37A3A01CNB#AA0?
The R7FS3A37A3A01CNB#AA0 is supplied in a 64-pin QFN package (PWQN0064LA-A) measuring 8 mm × 8 mm with 0.4 mm pitch and an exposed thermal pad. It is rated for operation from –40°C to +105°C ambient temperature. The QFN package provides superior thermal dissipation compared to equivalent LQFP variants, supporting sustained 48-MHz operation in compact, sealed enclosures typical of industrial and medical R7FS3A37A3A01CNB#AA0 applications.
R7FS3A37A3A01CNB#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-WFQFN Exposed Pad
- 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, MMC/SD, QSPI, SCI, SPI, SSI, UART/USART, USB
- Peripherals:
- DMA, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 96K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 18x14b SAR; D/A 1x8b, 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FS3A37A3A01CNB#AA0 FAQ
1.How can I place an order for R7FS3A37A3A01CNB#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FS3A37A3A01CNB#AA0 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 R7FS3A37A3A01CNB#AA0 reliable?
The price and inventory of R7FS3A37A3A01CNB#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FS3A37A3A01CNB#AA0 is usually 5 days.
3.What payment methods are accepted for R7FS3A37A3A01CNB#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FS3A37A3A01CNB#AA0 transactions.
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R7FS3A37A3A01CNB#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FS3A37A3A01CNB#AA0 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 R7FS3A37A3A01CNB#AA0?
For technical support, including R7FS3A37A3A01CNB#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FS3A37A3A01CNB#AA0 requirements.
6.How does Aetrix verify that R7FS3A37A3A01CNB#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FS3A37A3A01CNB#AA0 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 R7FS3A37A3A01CNB#AA0 meets industry standards.
7.What is the process for return or replacement of R7FS3A37A3A01CNB#AA0?
All R7FS3A37A3A01CNB#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FS3A37A3A01CNB#AA0, 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 R7FS3A37A3A01CNB#AA0 part is unused and in its original packaging.
Return procedure for R7FS3A37A3A01CNB#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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