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Renesas R7FA4M1AB3CNE#AC0
- Part No.:
- R7FA4M1AB3CNE#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
R7FA4M1AB3CNE#AC0.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:257
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Product details
Overview
R7FA4M1AB3CNE#AC0 from Renesas is a 48-MHz Arm® Cortex-M4 microcontroller with FPU, 256-KB code flash, 32-KB SRAM, USB 2.0 Full-Speed interface, 14-bit ADC, 12-bit DAC, Segment LCD Controller, and Capacitive Touch Sensing Unit - designed for low-power HMI applications such as smart thermostats and industrial control panels.
For engineers reviewing the R7FA4M1AB3CNE#AC0 datasheet, R7FA4M1AB3CNE#AC0 pinout, R7FA4M1AB3CNE#AC0 application, or R7FA4M1AB3CNE#AC0 equivalent, key selection criteria include its 48-pin QFN package, -40°C to +105°C operating range, integrated CTSU/SLCDC for touch-and-display systems, USB Battery Charging 1.2 compliance, and dual watchdog timers (WDT/IWDT) for functional safety-critical designs.
Technical Context
The R7FA4M1AB3CNE#AC0 implements an Armv7E-M architecture with DSP extensions and single-precision FPU, supporting deterministic real-time control in motor drives and sensor fusion. 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.
Peripheral integration centers on event-driven autonomy: the Event Link Controller (ELC) enables direct module-to-module triggering without CPU intervention, while the Data Transfer Controller (DTC) and 4-channel DMAC offload burst transfers from UART, SPI, I2C, and USBFS - critical for low-latency HMI and industrial communication stacks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 48 MHz max - enables floating-point math for motor control and sensor calibration without software emulation. |
| Memory | 256-KB code flash + 8-KB data flash + 32-KB SRAM (16 KB ECC-protected) - supports firmware updates, parameter storage, and real-time buffer management. |
| Analog Peripherals | 14-bit ADC (25 ch), 12-bit DAC, 2× ACMPLP, 4× OPAMP, TSN - provides high-resolution sensing and analog signal conditioning for closed-loop control. |
| Connectivity | USB 2.0 FS (with on-chip transceiver & BC 1.2), CAN 2.0B, 4× SCI, 2× SPI, 2× I2C, SSIE - enables mixed wired/wireless gateway and audio-capable edge nodes. |
| HMI Interfaces | Segment LCD Controller (38×4 or 34×8), CTSU (10 electrodes) - directly drives segmented displays and detects multi-touch buttons without external ICs. |
| Package & Temp | 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), -40°C to +105°C - suitable for compact, thermally demanding industrial and automotive cabin applications. |
| Security | Secure Crypto Engine 5 (AES128/256, GHASH, TRNG) - hardware-accelerated encryption for secure boot, OTA updates, and device authentication. |
Pinout & Package
48-pin QFN package (PWQN0048KB-A), 7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad - optimized for space-constrained PCB layouts with efficient heat dissipation.
| 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. |
| XTAL / EXTAL | Main clock oscillator interface | Supports 1–20 MHz crystal; enables precise timing for USB and RTC - essential for USB frame synchronization and calendar accuracy. |
| USB_VBUS / USB_DP / USB_DM | USB 2.0 Full-Speed interface | Integrated transceiver with internal 3.3-V LDO - eliminates external PHY and reduces BOM count for USB device mode. |
| SLCD_SEG0–33 / SLCD_COM0–7 | Segment LCD driver outputs | Direct drive of up to 34 segments × 8 commons - enables monochrome display control without external segment drivers. |
| CTSU_S0–9 | Capacitive touch electrode inputs | 10 dedicated CTSU channels - supports up to 10 independent touch buttons or sliders with noise-immune delta-sigma measurement. |
| ADC0–10 / DAC0 / ACMPLP0/1 | Analog input/output/comparator | Simultaneous sampling across 11 ADC channels; DAC0 feeds ACMPLP0 reference - enables analog front-end for current/voltage monitoring. |
| GPTIO0A–GPTIO7A | PWM capture/compare I/O | 8-channel 16-bit GPT with complementary output support - suitable for 3-phase BLDC motor control using GTOUUP/GTOULO signals. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables zero-CPU-latency peripheral chaining - e.g., ADC conversion completion triggers DMA transfer to SRAM without interrupt overhead. |
| USB Battery Charging 1.2 | Supports DCP/CDP/SDP detection and 1.5-A charging - allows direct USB port powering of connected devices in hub or docking station designs. |
| Low-Power Analog Comparator (ACMPLP) | Configurable speed modes (high/low) with <1-μA standby current - ideal for wake-on-threshold detection in battery-operated sensors. |
| Realtime Clock with Calendar Mode | 100-year Gregorian calendar (2000–2099) with leap-year auto-adjust - eliminates host MCU date/time computation in HVAC and energy metering. |
| Secure Crypto Engine 5 (SCE5) | Hardware AES acceleration with key wrapping and TRNG entropy source - meets IEC 62443-3-3 SL2 requirements for secure firmware signing. |
Applications
| Smart Thermostat Control Panel | Industrial HMI Display Module |
|---|---|
Use Scenario: Wall-mounted HVAC controller with segmented LCD display, capacitive touch buttons, temperature/humidity sensing, and USB configuration port. IC Role / Device Role / Timing Role: Main application MCU managing display refresh, touch scan, sensor acquisition, USB CDC communication, and RTC-based scheduling. Use Value: Integrated SLCDC and CTSU eliminate two external ICs; USB FS with BC 1.2 enables field technician reconfiguration via standard USB cable without external power adapters. | Use Scenario: DIN-rail mounted PLC operator interface with 4-line segmented display, 8-button touch overlay, CAN bus connectivity, and analog I/O monitoring. IC Role / Device Role / Timing Role: Human-machine interface controller interfacing with CAN master PLC, driving display, scanning touch, and digitizing analog sensor inputs. Use Value: Dual watchdog (WDT + IWDT) ensures fail-safe recovery during CAN bus faults; 105°C rating guarantees operation inside hot control cabinets without derating. |
| Portable Medical Monitor | Energy Meter with Local UI |
Use Scenario: Battery-powered vital sign monitor with LCD display, touch navigation, ECG signal conditioning, and USB data export. IC Role / Device Role / Timing Role: System-on-chip handling analog front-end (OPAMP/ADC), display control, touch interface, and USB mass storage class for waveform logs. Use Value: 4× OPAMP + 14-bit ADC enable high-fidelity biopotential amplification; low-power AGT timers maintain accurate timekeeping during deep sleep between measurements. | Use Scenario: Smart electricity meter with LCD readout, tamper-detection touch keys, pulse output interface, and USB programming port. IC Role / Device Role / Timing Role: Metering UI controller acquiring kWh data from metrology IC via SPI, updating display, detecting button presses, and enabling secure firmware updates via USB. Use Value: Hardware CRC and SCE5 ensure integrity and authenticity of firmware updates; 8-KB data flash stores tariff tables and calibration constants with 100k-cycle endurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA4M2AD3CFM | 64-pin LQFP, 512-KB flash, 64-KB SRAM, adds QSPI and SDHI interfaces | Better suited for designs requiring external flash or SD card logging | Select when expanding storage or adding wireless co-processor interfaces beyond R7FA4M1AB3CNE#AC0's 48-pin footprint. |
| R7FA6M2AF3CFM | Arm Cortex-M4F at 100 MHz, 1-MB flash, 256-KB SRAM, adds Ethernet MAC and higher-speed USB HS | Targeted at networked gateways and real-time industrial controllers | Choose for applications needing deterministic Ethernet communication or >48-MHz compute headroom, accepting larger package and higher power. |
Compared with R7FA4M1AB3CNE#AC0, the R7FA4M2AD3CFM offers double flash/SRAM and expanded peripherals in a larger package, while the R7FA6M2AF3CFM delivers significantly higher performance and networking capability - both require PCB redesign but provide scalable migration paths within Renesas' RA family.
Availability
R7FA4M1AB3CNE#AC0 is available at Aetrix Electronics and suitable for smart thermostats, industrial HMIs, portable medical monitors, and energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA4M1AB3CNE#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.
The R7FA4M1AB3CNE#AC0 belongs to the RA4M1 Group - a family of low-power, HMI-optimized Arm Cortex-M4 MCUs designed for cost-sensitive, display-and-touch enabled edge devices with USB connectivity and functional safety features.
FAQ
What is the maximum operating frequency of the R7FA4M1AB3CNE#AC0?
The R7FA4M1AB3CNE#AC0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M4 core with FPU. This frequency is achievable across the full -40°C to +105°C temperature range when powered within the specified 1.6 V to 5.5 V VCC range. The high-speed on-chip oscillator (HOCO) supports 48 MHz directly, eliminating need for external crystal in many applications.
Does the R7FA4M1AB3CNE#AC0 support USB device mode with battery charging capability?
Yes, the R7FA4M1AB3CNE#AC0 integrates a USB 2.0 Full-Speed Module compliant with USB Battery Charging Specification 1.2. It supports DCP, CDP, and SDP detection and can deliver up to 1.5 A to downstream devices when configured as a charging port - all using its on-chip transceiver and internal 3.3-V LDO regulator.
How many capacitive touch channels does the R7FA4M1AB3CNE#AC0 support?
The R7FA4M1AB3CNE#AC0 includes the Capacitive Touch Sensing Unit (CTSU) supporting up to 10 electrodes, as confirmed in Table 1.14 of the datasheet for the 48-pin variants (R7FA4M1AB3CFL/R7FA4M1AB3CNE). This enables robust touch button, slider, or proximity sensing in space-constrained HMI designs without external touch controllers.
What memory protection mechanisms are implemented in the R7FA4M1AB3CNE#AC0?
The R7FA4M1AB3CNE#AC0 implements multiple memory protection layers: Arm MPU with 8 regions, SRAM ECC (16 KB), SRAM parity (16 KB), flash area protection, and register write protection. These features collectively prevent unauthorized access, detect memory corruption, and enforce privilege separation - meeting IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements.
Is the R7FA4M1AB3CNE#AC0 pin-compatible with other RA4M1 group members?
No, the R7FA4M1AB3CNE#AC0 is not pin-compatible with other RA4M1 variants due to its 48-pin QFN package (PWQN0048KB-A), whereas RA4M1 devices come in 40-, 48-, 64-, and 100-pin options with differing pin counts and functions. Pin compatibility exists only within same-package variants (e.g., R7FA4M1AB3CNE and R7FA4M1AB3CFL share 48-pin LQFP/QFN footprints but differ in I/O count and peripheral mapping).
R7FA4M1AB3CNE#AC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-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:
- 31
- 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 14x14b SAR; D/A 2x8b, 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA4M1AB3CNE#AC0 FAQ
1.How can I place an order for R7FA4M1AB3CNE#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA4M1AB3CNE#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 R7FA4M1AB3CNE#AC0 reliable?
The price and inventory of R7FA4M1AB3CNE#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA4M1AB3CNE#AC0 is usually 5 days.
3.What payment methods are accepted for R7FA4M1AB3CNE#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA4M1AB3CNE#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA4M1AB3CNE#AC0?
R7FA4M1AB3CNE#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA4M1AB3CNE#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 R7FA4M1AB3CNE#AC0?
For technical support, including R7FA4M1AB3CNE#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA4M1AB3CNE#AC0 requirements.
6.How does Aetrix verify that R7FA4M1AB3CNE#AC0 is sourced from the original manufacturer or authorized distributors?
All R7FA4M1AB3CNE#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 R7FA4M1AB3CNE#AC0 meets industry standards.
7.What is the process for return or replacement of R7FA4M1AB3CNE#AC0?
All R7FA4M1AB3CNE#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA4M1AB3CNE#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 R7FA4M1AB3CNE#AC0 part is unused and in its original packaging.
Return procedure for R7FA4M1AB3CNE#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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