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Renesas R7FS3A37A2A01CBJ#AC0
- Part No.:
- R7FS3A37A2A01CBJ#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 121-LFBGA
- Datasheet:
-
R7FS3A37A2A01CBJ#AC0.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 121LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:299
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Product details
Overview
R7FS3A37A2A01CBJ#AC0 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, and security engine (SCE5). It targets industrial HMI, smart meters, and battery-backed instrumentation requiring real-time control, low-power operation, and human interface integration.
For engineers reviewing the R7FS3A37A2A01CBJ#AC0 datasheet, R7FS3A37A2A01CBJ#AC0 pinout, R7FS3A37A2A01CBJ#AC0 application, or R7FS3A37A2A01CBJ#AC0 equivalent, key selection considerations include its 121-pin BGA package, –40°C to +85°C operating range, 1.6–5.5 V supply, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and hardware-accelerated AES/GHASH/TRNG for secure firmware updates and data integrity.
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 512-KB code flash with 8-KB data flash (100k erase/write cycles), 96-KB SRAM split into 80-KB parity and 16-KB ECC regions, and Memory Mirror Function (MMF) for flexible firmware load/link address decoupling.
The system integrates dual asynchronous timer groups (GPT32 ×4, GPT16 ×6, AGT ×2), event-driven peripheral coordination via Event Link Controller (ELC), and four DMA channels plus DTC for zero-CPU data movement. Analog subsystem features include ADC14 with 25 selectable input channels, DAC12 with output amplifier, two ACMPLP comparators with programmable speed, four OPAMPs, and on-die temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 48 MHz max - enables floating-point math for motor control and sensor fusion without software emulation. |
| Memory | 512-KB code flash + 8-KB data flash + 96-KB SRAM (80-KB parity / 16-KB ECC) - supports robust firmware storage, parameter retention, and safety-critical RAM integrity. |
| Analog I/O | ADC14 (25-channel, 14-bit), DAC12 (1-channel), ACMPLP ×2, OPAMP ×4 - provides high-resolution sensing, analog output, and low-power signal conditioning for industrial sensors. |
| Connectivity | USBFS (with on-chip transceiver & BC 1.2), CAN 2.0B, SCI ×6, IIC ×3, SPI ×2, QSPI, SDHI - enables wired host/device communication, fieldbus interfacing, and external memory expansion. |
| HMI Support | SLCDC (up to 54×4 segments), CTSU (27 electrodes) - directly drives segment LCDs and detects touch through insulating overlays without external ICs. |
| Power & Safety | 1.6–5.5 V operation, RTC with battery backup, IWDT with dedicated 15-kHz oscillator, CAC, CRC, DOC - ensures reliable timing, fail-safe reset, clock accuracy monitoring, and data integrity in harsh environments. |
| Package | 121-pin BGA (8 mm × 8 mm, 0.65 mm pitch), –40°C to +85°C - compact footprint suitable for space-constrained industrial and metering applications. |
Pinout & Package
Package: 121-pin BGA (PLBG0121JA-A), 8 mm × 8 mm, 0.65 mm pitch, RoHS-compliant Sn terminal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: VCC powers core/peripherals; VSS is common reference - requires local 0.1-μF decoupling per VCC pin. |
| VBATT | Battery backup supply | Provides continuous power to RTC, SOSC, LOCO, and backup registers during main supply loss - enables calendar retention and wake-up capability. |
| XTAL / EXTAL | Main crystal oscillator interface | Supports 1–20 MHz crystals for precise system timing; EXTAL accepts external clock - critical for USB and CAN timing compliance. |
| XCIN / XCOUT | Sub-clock oscillator interface | Drives 32.768 kHz crystal for RTC calendar mode - enables accurate timekeeping independent of main clock domain. |
| RES | Active-low reset input | Hardware reset assertion forces full system initialization - used with external supervisor ICs for brown-out recovery. |
| TMS / TCK / TDO / TDI / SWDIO / SWCLK / SWO | JTAG/SWD debug interface | Enables full-core debugging, flash programming, and trace via standard ARM debug probes - no external debug adapter required. |
| MD | Mode configuration input | Defines boot source (single-chip vs. SCI/USB) at power-on - must be stable during reset release to avoid undefined startup behavior. |
| IRQ0–IRQ15 / NMI | Interrupt request inputs | Supports prioritized, vectored interrupt handling for peripherals and external events - essential for real-time response in control loops. |
| KR00–KR07 | Key interrupt inputs | Edge-triggered GPIO pins for wake-up and button detection - reduces CPU polling overhead in low-power states. |
| RD / WR / WR0 / WR1 / EBCLK | External bus interface strobes/clock | Enable connection to parallel memory or legacy peripherals using 8-/16-bit bus - supports legacy design migration and extended memory mapping. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Mirror Function (MMF) | Maps flash load address to link address transparently - simplifies firmware updates and A/B swapping without linker script changes. |
| Event Link Controller (ELC) | Direct hardware linking of peripheral events (e.g., ADC EOC → DMAC trigger) - eliminates CPU ISR latency and improves deterministic timing. |
| Secure Crypto Engine 5 (SCE5) | Hardware-accelerated AES128/256, GHASH, TRNG - enables fast, side-channel-resistant encryption for OTA updates and secure boot verification. |
| Low-Power Asynchronous Timers (AGT) | 16-bit timers running on LOCO (32.768 kHz) - provide precise wake-up timing from deep-sleep modes with sub-microamp current draw. |
| Segment LCD Controller (SLCDC) | Configurable waveform generation (A/B), internal voltage boosting, 16-step contrast control - drives multiplexed LCDs up to 54×4 segments without external bias circuitry. |
| Capacitive Touch Sensing Unit (CTSU) | 27-electrode support with noise immunity tuning - enables robust touch detection through glass/plastic overlays in noisy industrial environments. |
Applications
| Smart Energy Metering | Industrial HMI Panel |
|---|---|
Use Scenario: Three-phase electricity meter with tariff switching, tamper detection, and local display. IC Role / Device Role / Timing Role: Main application controller managing metrology interface (SPI/SCI), LCD display (SLCDC), touch navigation (CTSU), secure firmware updates (SCE5), and RTC-based billing cycles. Use Value: Integrated 14-bit ADC and DAC enable direct sensor interface; ECC SRAM and IWDT ensure measurement integrity and fail-safe recovery during power glitches. | Use Scenario: Factory-floor operator panel with segmented LCD, touch buttons, and CAN-connected PLC. IC Role / Device Role / Timing Role: Real-time HMI processor handling touch input (CTSU), display refresh (SLCDC), CAN messaging (CAN module), and USB diagnostics (USBFS). Use Value: 121-pin BGA offers high I/O density in compact layout; USB Battery Charging 1.2 support allows field service via standard phone chargers. |
| Portable Medical Instrument | Building Automation Controller |
Use Scenario: Battery-powered blood glucose monitor with LCD readout, touch interface, and BLE bridge (via UART). IC Role / Device Role / Timing Role: Low-power system controller managing analog front-end (ADC14, OPAMP), segment display (SLCDC), capacitive buttons (CTSU), and RTC alarm wake-up. Use Value: 1.6 V minimum supply and AGT timers extend battery life; on-die temperature sensor (TSN) enables automatic calibration compensation. | Use Scenario: HVAC zone controller with LCD status display, touch input, RS-485 gateway (SCI), and CAN fieldbus. IC Role / Device Role / Timing Role: Central control unit coordinating sensor reading (ADC14), actuator control (GPT PWM), display (SLCDC), and multi-protocol communication (SCI/CAN). Use Value: Dual watchdogs (WDT + IWDT) guarantee safe shutdown on firmware hang; 5-V tolerant I/O simplifies interface to legacy 5 V sensors and actuators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FS3A37A3A01CFB | Same core, memory, and peripherals but rated for –40°C to +105°C and packaged in 144-pin LQFP. | Targeted at under-hood automotive or high-temp industrial enclosures where extended temperature range is mandatory. | Select when ambient operating temperature exceeds +85°C or LQFP assembly is preferred over BGA. |
| R7FS3A37A2A01CLK | Identical specs and temperature grade, but in 145-pin LGA package with 123 I/O pins and full SLCDC/CTSU capability. | Suitable for designs requiring maximum I/O count and full 54×4 segment LCD drive capability in surface-mount land-grid array format. | Choose when higher pin count, enhanced LCD drive, or LGA reworkability is needed over BGA density. |
Compared with R7FS3A37A2A01CBJ#AC0, the R7FS3A37A3A01CFB extends thermal reliability for harsh environments, while R7FS3A37A2A01CLK increases I/O and LCD segment capacity - both retain identical firmware compatibility and peripheral feature set, enabling scalable platform development across package and temperature variants.
Availability
R7FS3A37A2A01CBJ#AC0 is available at Aetrix Electronics and suitable for smart metering, industrial HMI panels, portable medical devices, and building automation controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for R7FS3A37A2A01CBJ#AC0 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 applications.
The R7FS3A37A2A01CBJ#AC0 belongs to the Synergy S3A3 microcontroller group, designed specifically for cost-sensitive, high-integration industrial HMI and metering applications requiring robust analog interfaces, secure connectivity, and low-power operation.
FAQ
What is the maximum operating frequency and core architecture of the R7FS3A37A2A01CBJ#AC0?
The R7FS3A37A2A01CBJ#AC0 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 architecture delivers deterministic real-time performance suitable for motor control, sensor fusion, and industrial automation tasks within the R7FS3A37A2A01CBJ#AC0's power envelope.
Does the R7FS3A37A2A01CBJ#AC0 support hardware encryption and secure boot?
Yes, the R7FS3A37A2A01CBJ#AC0 integrates the Secure Crypto Engine 5 (SCE5), which provides hardware-accelerated AES128/256 encryption/decryption, GHASH authentication, and a True Random Number Generator (TRNG). These capabilities enable secure firmware signing, encrypted OTA updates, and tamper-resistant key storage - all essential for implementing secure boot and runtime integrity verification in the R7FS3A37A2A01CBJ#AC0-based systems.
What LCD and touch interfaces does the R7FS3A37A2A01CBJ#AC0 support?
The R7FS3A37A2A01CBJ#AC0 includes a Segment LCD Controller (SLCDC) supporting up to 54 segments × 4 commons or 50 segments × 8 commons, with internal voltage boosting and 16-step contrast control. It also integrates a Capacitive Touch Sensing Unit (CTSU) supporting up to 27 electrodes. Together, these peripherals allow the R7FS3A37A2A01CBJ#AC0 to drive multiplexed segment displays and detect touch through insulating overlays - eliminating need for external LCD drivers or touch controllers.
What are the supported operating voltage and temperature ranges for the R7FS3A37A2A01CBJ#AC0?
The R7FS3A37A2A01CBJ#AC0 operates from 1.6 V to 5.5 V and is qualified for industrial temperature range of –40°C to +85°C. Its wide supply range supports direct battery operation (e.g., 3.7 V Li-ion or 4×AA) and compatibility with legacy 5 V logic interfaces. The specified temperature grade makes the R7FS3A37A2A01CBJ#AC0 suitable for deployment in non-automotive industrial environments including smart meters, factory HMIs, and building controllers.
How many analog-to-digital and digital-to-analog converters does the R7FS3A37A2A01CBJ#AC0 include?
The R7FS3A37A2A01CBJ#AC0 integrates a 14-bit successive approximation ADC (ADC14) with up to 25 selectable input channels, a 12-bit DAC (DAC12) with output amplifier, two 8-bit DACs (DAC8) dedicated to analog comparator references, two low-power analog comparators (ACMPLP), four operational amplifiers (OPAMP), and an on-die temperature sensor (TSN). This comprehensive analog subsystem enables precision sensor interfacing, signal conditioning, and closed-loop control directly within the R7FS3A37A2A01CBJ#AC0.
R7FS3A37A2A01CBJ#AC0 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, MMC/SD, QSPI, SCI, SPI, SSI, UART/USART, USB
- Peripherals:
- DMA, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 104
- 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 26x14b; D/A 3x8b, 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FS3A37A2A01CBJ#AC0 FAQ
1.How can I place an order for R7FS3A37A2A01CBJ#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FS3A37A2A01CBJ#AC0 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 R7FS3A37A2A01CBJ#AC0 reliable?
The price and inventory of R7FS3A37A2A01CBJ#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FS3A37A2A01CBJ#AC0 is usually 5 days.
3.What payment methods are accepted for R7FS3A37A2A01CBJ#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FS3A37A2A01CBJ#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FS3A37A2A01CBJ#AC0?
R7FS3A37A2A01CBJ#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FS3A37A2A01CBJ#AC0 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 R7FS3A37A2A01CBJ#AC0?
For technical support, including R7FS3A37A2A01CBJ#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FS3A37A2A01CBJ#AC0 requirements.
6.How does Aetrix verify that R7FS3A37A2A01CBJ#AC0 is sourced from the original manufacturer or authorized distributors?
All R7FS3A37A2A01CBJ#AC0 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 R7FS3A37A2A01CBJ#AC0 meets industry standards.
7.What is the process for return or replacement of R7FS3A37A2A01CBJ#AC0?
All R7FS3A37A2A01CBJ#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FS3A37A2A01CBJ#AC0, 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 R7FS3A37A2A01CBJ#AC0 part is unused and in its original packaging.
Return procedure for R7FS3A37A2A01CBJ#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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