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Renesas R7FA4M1AB3CNF#AC0
- Part No.:
- R7FA4M1AB3CNF#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R7FA4M1AB3CNF#AC0.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 40HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:946
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Product details
Overview
R7FA4M1AB3CNF#AC0 from Renesas is a 40-pin QFN Arm Cortex-M4 microcontroller operating at up to 48 MHz, featuring 256-KB code flash, 32-KB SRAM, USB 2.0 Full-Speed with battery charging v1.2, 14-bit ADC (11 channels), and integrated capacitive touch sensing (CTSU) for HMI applications in industrial control panels and portable medical devices.
For engineers reviewing the R7FA4M1AB3CNF#AC0 datasheet, R7FA4M1AB3CNF#AC0 pinout, R7FA4M1AB3CNF#AC0 application, or R7FA4M1AB3CNF#AC0 equivalent, key selection criteria include its 40-pin QFN package (6 mm × 6 mm, 0.5 mm pitch), -40°C to +105°C temperature grade, 1.6–5.5 V operation, and support for USBFS, CAN, dual SPI/I²C, RTC with battery backup, and low-power AGT timers.
Technical Context
The R7FA4M1AB3CNF#AC0 implements an Armv7E-M architecture with single-precision FPU and 8-region MPU for deterministic real-time execution. Its memory subsystem includes ECC-protected SRAM (16 KB), 8-KB data flash rated for 100,000 P/E cycles, and Flash Cache for instruction throughput optimization.
Peripherals are tightly coupled via the Event Link Controller (ELC), enabling autonomous interaction between modules like GPT, ADC, and DMA without CPU intervention. The Secure Crypto Engine 5 (SCE5) provides hardware-accelerated AES128/256, GHASH, and TRNG - critical for firmware authentication and secure boot in connected edge devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 48 MHz max - enables real-time motor control and audio processing without external DSP. |
| Memory | 256-KB code flash + 8-KB data flash + 32-KB SRAM (16 KB ECC, 16 KB parity) - supports field-upgradable firmware and robust data logging. |
| Analog | 14-bit ADC (11 ch), 12-bit DAC (1 ch), 2× ACMPLP, 4× OPAMP, TSN - allows precision sensor signal conditioning and closed-loop analog control. |
| Connectivity | USB 2.0 FS (with on-chip transceiver & BC 1.2), CAN 2.0B, 4× SCI, 2× I²C, 2× SPI, SSIE - enables mixed wired/wireless gateway functionality. |
| Timers & Power | GPT32×2, GPT16×6, AGT×2, RTC with calendar & battery backup, LVD, low-power modes - delivers precise timing and <1.5 µA deep-sleep current for battery longevity. |
| HMI & Security | CTSU (10 electrodes), SLCDC not supported, SCE5 (AES/GHASH/TRNG) - enables secure, touch-enabled UIs without external controllers. |
| Package & Environment | 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch), -40°C to +105°C - suitable for compact, thermally constrained industrial enclosures. |
Pinout & Package
Package: 40-pin QFN (PWQN0040KC-A / PWQN0040KD-A), 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad, RoHS-compliant Sn (Tin) termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: VCC powers core/peripherals (1.6–5.5 V); VSS is common reference - requires local 0.1-μF decoupling per VCC pin. |
| VBATT | Battery backup supply | Provides independent power to RTC, SOSC, and backup registers during main supply loss - enables calendar retention and wake-on-event. |
| XTAL / EXTAL | Main clock oscillator interface | Supports 1–4 MHz crystal (1.6–1.8 V), 1–8 MHz (1.8–2.4 V), or 1–20 MHz (2.4–5.5 V) - selectable via software for frequency accuracy vs. power trade-off. |
| SWDIO / SWCLK | Serial Wire Debug interface | Enables non-intrusive debug, flash programming, and real-time trace via standard ARM CoreSight - no JTAG pins required. |
| USB_D+ / USB_D- | USB 2.0 Full-Speed differential pair | On-chip transceiver eliminates external PHY; internal 3.3-V LDO powers USB logic - simplifies compliance with USB BC 1.2 charging detection. |
| CTSU_S0–S9 | Capacitive touch sensing inputs | 10 dedicated CTSU electrode pins with programmable sensitivity and noise rejection - supports slider, wheel, and proximity detection without external IC. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Security Engine (SCE5) | AES128/256 encryption/decryption, GHASH authentication, and TRNG entropy source - enables secure firmware updates and TLS offload. |
| Event Link Controller (ELC) | Direct peripheral-to-peripheral triggering (e.g., ADC conversion completion → DMA transfer → GPT capture) - eliminates CPU polling and reduces latency by >3×. |
| Low-Power Analog Subsystem | 14-bit ADC with selectable 12/14-bit resolution, 2× ACMPLP with programmable speed, 4× OPAMP - supports high-fidelity sensor fusion at <200 µA active current. |
| USB + CAN Dual-Interface Capability | Integrated USBFS (host/device) and ISO 11898-1 CAN controller with 32 mailboxes - enables hybrid industrial gateways connecting legacy fieldbus and modern PC interfaces. |
| Real-Time Clock with Calendar Mode | 100-year Gregorian calendar (2000–2099), leap-year correction, battery-backed timekeeping - eliminates need for external RTC IC in time-stamped data loggers. |
Applications
| Industrial HMI Panel | Portable Medical Monitor |
|---|---|
Use Scenario: Compact front-panel interface for PLC-controlled machinery with touch buttons, status LEDs, and real-time parameter display. IC Role / Device Role / Timing Role: Main application MCU handling CTSU touch input, USB configuration download, CAN bus communication with PLC, and RTC-based event logging. Use Value: Integrated CTSU and USBFS eliminate external touch controller and USB PHY, reducing BOM cost by $1.20 and PCB area by 28 mm². | Use Scenario: Battery-powered vital sign monitor measuring ECG, SpO₂, and temperature with wireless sync and local data storage. IC Role / Device Role / Timing Role: System-on-chip managing analog front-end (ADC/OPAMP/TSN), low-power sleep scheduling (AGT + RTC), and USB mass-storage mode for clinical data export. Use Value: 1.5 µA deep-sleep current and integrated battery backup extend runtime to 14 days on a 500 mAh Li-ion cell - exceeding IEC 62304 Class B requirements. |
| Smart Energy Meter | Automated Test Equipment (ATE) Module |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, tariff switching, and remote firmware update via USB stick. IC Role / Device Role / Timing Role: Primary controller executing metrology algorithms, managing secure AES-encrypted firmware validation, and driving LCD segments via SLCDC (not supported on R7FA4M1AB3CNF#AC0 - use alternate variant). Use Value: SCE5 accelerates AES-256 signature verification in <12 ms, enabling full firmware image validation before boot - meeting UL 61010-1 security mandates. | Use Scenario: Modular ATE sub-board generating precise PWM waveforms, capturing analog test signals, and reporting results over USB to host PC. IC Role / Device Role / Timing Role: Precision timing engine using GPT32 for 100-ns PWM resolution, ADC14 for 14-bit waveform digitization, and USBFS for bulk data streaming. Use Value: Hardware-synchronized ADC sampling triggered by GPT events achieves ±0.5 LSB integral nonlinearity - sufficient for Class II calibration-grade instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA4M1AB3CFM | 64-pin LQFP, 49 I/O pins, 256-KB flash, same core/peripherals but adds SLCDC and 27-electrode CTSU | Supports larger segment LCD displays and more complex touch interfaces (e.g., multi-button control panel) | Select when HMI requires >10 touch electrodes or integrated LCD driver - R7FA4M1AB3CNF#AC0 lacks SLCDC. |
| R7FA2E1A93CFM | Arm Cortex-M23 (TrustZone), 64-pin LQFP, 128-KB flash, no USBFS or CAN, lower power (1.1 µA deep-sleep) | Targeted at ultra-low-power secure IoT nodes where USB/CAN are unnecessary and TrustZone isolation is mandatory | Select only if PSA Certified Level 1 security and sub-2 µA sleep are prioritized over connectivity - R7FA4M1AB3CNF#AC0 offers broader peripheral set. |
Compared with R7FA4M1AB3CFM, R7FA4M1AB3CNF#AC0 trades I/O count and SLCDC for smaller footprint and lower thermal mass; versus R7FA2E1A93CFM, it delivers higher compute throughput and richer connectivity at the cost of slightly higher active power - making it optimal for space-constrained industrial gateways requiring USB+CAN+CTSU integration.
Availability
R7FA4M1AB3CNF#AC0 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical monitors, smart energy meters, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA4M1AB3CNF#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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for automotive, industrial, and enterprise applications.
The RA4M1 Group targets cost-sensitive, low-power industrial and IoT edge devices requiring rich analog integration, USB connectivity, and hardware security - with R7FA4M1AB3CNF#AC0 optimized for compact, thermally demanding designs needing CTSU and USBFS in minimal footprint.
FAQ
What is the maximum operating frequency and core architecture of the R7FA4M1AB3CNF#AC0?
The R7FA4M1AB3CNF#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 an 8-region Memory Protection Unit (MPU). This configuration delivers deterministic real-time performance suitable for motor control, audio processing, and sensor fusion tasks within the R7FA4M1AB3CNF#AC0's power envelope.
Does the R7FA4M1AB3CNF#AC0 support USB device and host functionality?
Yes, the R7FA4M1AB3CNF#AC0 integrates a USB 2.0 Full-Speed Module (USBFS) capable of operating in both device and host modes. It includes an on-chip transceiver and LDO regulator, supports all USB 2.0 transfer types, and complies with USB Battery Charging Specification 1.2. The R7FA4M1AB3CNF#AC0 allocates up to 10 pipes for endpoint management, enabling flexible HID, CDC, or mass-storage class implementations without external PHY components.
How many analog input channels does the 14-bit ADC support on the R7FA4M1AB3CNF#AC0?
The R7FA4M1AB3CNF#AC0's 14-bit A/D Converter (ADC14) supports 11 analog input channels, as confirmed by the RA4M1 Group function comparison table (Page 11). This is fewer than the 25-channel capability of the 100-pin variants due to pin count limitations in the 40-pin QFN package. The ADC also supports selectable 12-bit or 14-bit resolution modes and accepts inputs from the temperature sensor and internal reference voltage.
What low-power features are implemented in the R7FA4M1AB3CNF#AC0 for battery-operated applications?
The R7FA4M1AB3CNF#AC0 includes multiple low-power capabilities: two Low Power Asynchronous General-Purpose Timers (AGT), Realtime Clock (RTC) with battery backup support, configurable Low Voltage Detection (LVD), and multiple low-power modes including deep-sleep (<1.5 µA typical). Its 1.6–5.5 V operating range and integrated VBATT pin allow seamless switchover to backup power, preserving RTC time and register state during main supply interruption - essential for portable medical and metering applications using the R7FA4M1AB3CNF#AC0.
Is the R7FA4M1AB3CNF#AC0 pin-compatible with other RA4M1 family members?
No, the R7FA4M1AB3CNF#AC0 is not pin-compatible with other RA4M1 variants due to its 40-pin QFN package (PWQN0040KC-A), whereas other members use 48-, 64-, or 100-pin packages (LQFP/QFN/LGA). While software and peripheral registers are fully compatible across the RA4M1 Group, PCB layout must be redesigned for the R7FA4M1AB3CNF#AC0's unique 40-pin footprint, thermal pad, and I/O mapping - particularly its 25 GPIOs, 10 CTSU electrodes, and absence of SLCDC pins.
R7FA4M1AB3CNF#AC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RA4M1
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, SCI, SPI, UART/USART, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 11x14b SAR; D/A 2x8b, 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA4M1AB3CNF#AC0 FAQ
1.How can I place an order for R7FA4M1AB3CNF#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AC0 reliable?
The price and inventory of R7FA4M1AB3CNF#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA4M1AB3CNF#AC0 is usually 5 days.
3.What payment methods are accepted for R7FA4M1AB3CNF#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA4M1AB3CNF#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA4M1AB3CNF#AC0?
R7FA4M1AB3CNF#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AC0?
For technical support, including R7FA4M1AB3CNF#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA4M1AB3CNF#AC0 requirements.
6.How does Aetrix verify that R7FA4M1AB3CNF#AC0 is sourced from the original manufacturer or authorized distributors?
All R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AC0 meets industry standards.
7.What is the process for return or replacement of R7FA4M1AB3CNF#AC0?
All R7FA4M1AB3CNF#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AC0 part is unused and in its original packaging.
Return procedure for R7FA4M1AB3CNF#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA4M1AB3CNF#AC0 Tags
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