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Renesas R7FA4M1AB3CNF#AA0
- Part No.:
- R7FA4M1AB3CNF#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R7FA4M1AB3CNF#AA0.pdf
- Description:
- MCU RA4 ARM CM4 48MHZ 256K/32K Q
- Quantity:
- Payment:
- Shipping:
Inventory:502
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Product details
Overview
R7FA4M1AB3CNF#AA0 from Renesas Electronics is a 40-pin QFN Arm® Cortex-M4 microcontroller with FPU, operating at up to 48 MHz, featuring 256-KB code flash, 32-KB SRAM, USB 2.0 Full-Speed, 14-bit ADC, and integrated capacitive touch sensing (CTSU) - deployed in battery-powered HMI panels requiring low-power operation and analog signal conditioning.
For engineers reviewing the R7FA4M1AB3CNF#AA0 datasheet, R7FA4M1AB3CNF#AA0 pinout, R7FA4M1AB3CNF#AA0 application, or R7FA4M1AB3CNF#AA0 equivalent, key selection criteria include its 40-pin QFN package (6 mm × 6 mm, 0.5 mm pitch), -40°C to +105°C industrial temperature grade, 25 I/O pins with 2× 5-V tolerant inputs, and dedicated CTSU/SLCDC peripherals for touch-enabled displays.
Technical Context
This MCU implements an Armv7E-M architecture with DSP extensions and single-precision FPU, supporting deterministic real-time control via dual AGT timers, six GPT16 channels, and Event Link Controller (ELC) for hardware-triggered peripheral chaining without CPU intervention. Its memory subsystem includes ECC-protected SRAM and 8-KB data flash rated for 100,000 P/E cycles.
The analog subsystem integrates a 14-bit ADC with 11 selectable input channels, two ACMPLP comparators with programmable speed modes, four OPAMPs, and a temperature sensor - all accessible through the same 25-pin I/O set. Security is enforced via SCE5 crypto engine (AES128/256, TRNG, GHASH) and hardware-level register write protection.
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 fusion without software emulation. |
| Memory | 256-KB code flash + 8-KB data flash + 32-KB SRAM - supports firmware updates in field and retention of calibration data across power cycles. |
| Analog Peripherals | 14-bit ADC (11 ch), DAC12 (1 ch), 2× ACMPLP, 4× OPAMP - allows high-resolution sensor acquisition and local signal conditioning on-chip. |
| Connectivity | USB 2.0 FS (with on-chip transceiver), 4× SCI, 2× I2C, 2× SPI, CAN, SSIE - provides flexible host/device communication and audio interface capability. |
| Human Interface | Capacitive Touch Sensing Unit (CTSU, 10 electrodes), no SLCDC - optimized for compact touch-button interfaces, not segment LCD drive. |
| Package & Temp | 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch), -40°C to +105°C - suitable for space-constrained industrial and automotive cabin applications. |
| Power Supply | 1.6 V to 5.5 V operation - enables direct connection to 3.3 V or 5 V rails without external regulators. |
Pinout & Package
Package: 40-pin QFN (PWQN0040KC-A / PWQN0040KD-A), 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad, RoHS-compliant Sn finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Primary 1.6–5.5 V core power domain; requires local 0.1-μF decoupling per VCC pin. |
| VBATT | Battery backup supply | Enables RTC calendar retention and wakeup during main power loss; supports coin-cell backup. |
| XTAL/EXTAL | Main clock oscillator interface | Supports 1–20 MHz crystal; enables precise timing for USB and real-time control loops. |
| SWDIO/SWCLK | Serial Wire Debug interface | Allows full JTAG/SWD debug access using standard Renesas E2 or E2 Lite debuggers. |
| CTSU0–CTSU9 | Capacitive touch sense inputs | Dedicated pins for 10-electrode touch sensing; internal charge-transfer measurement eliminates external components. |
| ADC0–ADC10 | Analog input channels | 11 single-ended or differential inputs shared with GPIO; supports internal TSN and Vref sampling. |
| GPTIO0A–GPTIO7A | PWM capture/compare I/O | Configurable for motor control (BLDC U/V/W phase outputs) or general-purpose timer I/O with dead-time insertion. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power asynchronous timers (AGT) | Two independent 16-bit timers with external event input - enable wake-from-sleep on sensor triggers without CPU active time. |
| Hardware-accelerated crypto (SCE5) | AES128/256 encryption, TRNG, and GHASH - offloads secure boot and OTA update verification from main CPU. |
| Event Link Controller (ELC) | Direct hardware linking between peripherals (e.g., ADC conversion complete → DMA trigger → USB transmit) - eliminates interrupt latency and CPU overhead. |
| USB Battery Charging 1.2 support | On-chip LDO powers USB transceiver at 3.3 V from 5 V VCC - enables direct USB port charging detection and negotiation without external IC. |
| Operational amplifier array | Four rail-to-rail OPAMPs with configurable gain - permits analog front-end signal amplification and filtering before ADC digitization. |
Applications
| Smart Thermostat Interface | Industrial Sensor Node |
|---|---|
Use Scenario: Compact wall-mounted HVAC controller with touch-sensitive buttons and ambient temperature/humidity sensing. IC Role / Device Role / Timing Role: Main system controller managing CTSU-based touch UI, ADC-driven sensor reads, RTC-based scheduling, and USB-configurable parameters. Use Value: Integrated CTSU and 14-bit ADC eliminate external touch controller and signal-conditioning ICs; 40-pin QFN reduces PCB area by >30% vs. 64-pin alternatives. | Use Scenario: DIN-rail mounted environmental monitor logging temperature, pressure, and gas concentration in factory settings. IC Role / Device Role / Timing Role: Edge-processing node performing local sensor fusion, CRC-secured data packaging, and CAN/USB reporting with battery-backed RTC timestamping. Use Value: SCE5 crypto ensures firmware integrity; ECC SRAM prevents silent data corruption in long-term deployments; AGT timers enable ultra-low-power wake-on-event operation. |
| Automotive Cabin Control | Portable Medical Device |
Use Scenario: Seat/mirror adjustment panel with capacitive touch controls and LIN/USB diagnostics interface. IC Role / Device Role / Timing Role: Dedicated HMI processor handling touch response, LED feedback PWM, CAN message routing, and USB service port access. Use Value: 105°C rating ensures reliability near vehicle electronics; 5-V tolerant pins simplify integration with legacy 5 V sensors and LIN transceivers. | Use Scenario: Handheld pulse oximeter with analog front-end, OLED display interface, and USB data export. IC Role / Device Role / Timing Role: Signal acquisition controller driving OPAMPs for photodiode amplification, digitizing via ADC14, and transmitting via USBFS. Use Value: On-chip OPAMPs and 14-bit ADC achieve <1% total harmonic distortion in analog path; USBFS with built-in transceiver removes need for external PHY. |
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, SLCDC support, 24 CTSU electrodes | Supports larger segment LCD displays and more complex touch layouts | Select when display interface or >10 touch electrodes required; adds 2.5 mm² PCB area and higher BOM cost. |
| R7FA2E1A93CLJ | 100-pin LGA, Cortex-M23 core, 48 MHz, 128 KB flash, no USBFS or CTSU | Targets security-critical but lower-peripheral-count applications | Choose for PSA Level 2 certified designs where USB/CTSU are unnecessary and footprint is secondary to certification. |
Compared with R7FA4M1AB3CNF#AA0, the R7FA4M1AB3CFM offers expanded I/O and display capability at the cost of size and power, while R7FA2E1A93CLJ trades analog/HMI features for Arm TrustZone security - making R7FA4M1AB3CNF#AA0 optimal for compact, touch-centric industrial edge nodes.
Availability
R7FA4M1AB3CNF#AA0 is available at Aetrix Electronics and suitable for smart thermostats, industrial sensor nodes, automotive cabin controls, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA4M1AB3CNF#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 applications, with over 40 years of microcontroller innovation.
The RA4M1 Group targets cost-sensitive, low-power HMI and sensor-edge applications, emphasizing integrated analog, touch, USB, and security - positioning R7FA4M1AB3CNF#AA0 as a purpose-built solution for compact, intelligent user interfaces.
FAQ
What is the maximum operating frequency of the R7FA4M1AB3CNF#AA0?
The R7FA4M1AB3CNF#AA0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M4 core with FPU. This speed is achievable across the full 1.6 V to 5.5 V supply range and -40°C to +105°C temperature grade, supported by the on-chip HOCO oscillator or external crystal. The R7FA4M1AB3CNF#AA0 maintains timing compliance under worst-case voltage and temperature conditions as verified in Renesas' characterization testing.
Does the R7FA4M1AB3CNF#AA0 support USB device functionality?
Yes, the R7FA4M1AB3CNF#AA0 integrates a USB 2.0 Full-Speed Module (USBFS) that supports both host and device roles. It includes an on-chip transceiver, USB LDO regulator, and up to 10 bidirectional pipes. The R7FA4M1AB3CNF#AA0 complies with USB Battery Charging Specification 1.2, enabling direct charging detection and negotiation without external circuitry.
How many capacitive touch electrodes does the R7FA4M1AB3CNF#AA0 support?
The R7FA4M1AB3CNF#AA0 supports up to 10 capacitive touch electrodes via its integrated Capacitive Touch Sensing Unit (CTSU). This is confirmed in Table 1.14 of the datasheet, which lists "CTSU: 10" for the R7FA4M1AB3CNF part number. The R7FA4M1AB3CNF#AA0 dedicates specific pins (CTSU0–CTSU9) for this function and requires no external RC networks.
What is the flash memory endurance specification for the R7FA4M1AB3CNF#AA0?
The R7FA4M1AB3CNF#AA0 specifies 100,000 program/erase (P/E) cycles for its 8-KB data flash memory, as documented in the "Memory" feature list and Table 1.2. Code flash endurance is not explicitly rated in the provided datasheet but follows Renesas' standard industrial-grade qualification. The R7FA4M1AB3CNF#AA0 uses wear-leveling firmware techniques to extend effective lifetime in field applications.
Is the R7FA4M1AB3CNF#AA0 pin-compatible with other RA4M1 group members?
No, the R7FA4M1AB3CNF#AA0 is not pin-compatible with other RA4M1 group members due to its 40-pin QFN package - distinct from the 48-, 64-, and 100-pin variants. While software and peripheral registers are fully compatible within the RA4M1 family, the R7FA4M1AB3CNF#AA0 has only 25 I/O pins (vs. 33/49/81), no SLCDC, and reduced CTSU electrode count, requiring PCB redesign for migration.
R7FA4M1AB3CNF#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RA4M1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, SCI, SPI, UART/USART, USB
- Peripherals:
- AES, Capacitive Touch, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 28
- 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#AA0 FAQ
1.How can I place an order for R7FA4M1AB3CNF#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AA0 reliable?
The price and inventory of R7FA4M1AB3CNF#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA4M1AB3CNF#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA4M1AB3CNF#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA4M1AB3CNF#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA4M1AB3CNF#AA0?
R7FA4M1AB3CNF#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AA0?
For technical support, including R7FA4M1AB3CNF#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA4M1AB3CNF#AA0 requirements.
6.How does Aetrix verify that R7FA4M1AB3CNF#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA4M1AB3CNF#AA0?
All R7FA4M1AB3CNF#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA4M1AB3CNF#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 R7FA4M1AB3CNF#AA0 part is unused and in its original packaging.
Return procedure for R7FA4M1AB3CNF#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA4M1AB3CNF#AA0 Tags
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