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Renesas R7FA4M1AB3CNB#AC0
- Part No.:
- R7FA4M1AB3CNB#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
R7FA4M1AB3CNB#AC0.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
R7FA4M1AB3CNB#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, CAN, 14-bit ADC, 12-bit DAC, Segment LCD Controller, and Capacitive Touch Sensing Unit - deployed in industrial HMI panels requiring integrated display drive, touch interface, and real-time control.
For engineers reviewing the R7FA4M1AB3CNB#AC0 datasheet, R7FA4M1AB3CNB#AC0 pinout, R7FA4M1AB3CNB#AC0 application, or R7FA4M1AB3CNB#AC0 equivalent, key selection considerations include its 64-pin QFN package, -40°C to +105°C operation, integrated SCE5 crypto engine, dual AGT timers for low-power wake-up, and SLCDC/CTSU co-optimization for battery-powered touch-LCD interfaces.
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 ECC-protected SRAM (16 KB), 8-KB data flash with 100,000 P/E cycles, and Flash Cache for instruction fetch acceleration.
The peripheral set is tightly coupled via the Event Link Controller (ELC), enabling hardware-triggered interactions - e.g., ADC conversion completion directly starting DMA transfer or triggering GPT waveform update - without CPU intervention. Safety is enforced through CAC clock monitoring, IWDT with dedicated 15-kHz oscillator, and 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 (16 KB ECC) - supports firmware updates, parameter storage, and real-time buffer handling. |
| Analog Peripherals | 14-bit ADC (25 ch), 12-bit DAC, 2× ACMPLP, 4× OPAMP, TSN - allows high-accuracy sensor signal conditioning and closed-loop analog control. |
| Human Interface | Segment LCD Controller (38×4 or 34×8), CTSU (27 electrodes) - drives multiplexed LCDs and detects touch on curved or sealed front panels. |
| Connectivity | USB 2.0 FS (with on-chip transceiver & BC 1.2), CAN 2.0B, 4× SCI, 2× I2C, 2× SPI, SSIE - enables field service via USB, industrial networking via CAN, and audio feedback via SSIE. |
| Timers & Control | GPT32×2, GPT16×6, AGT×2, RTC with calendar - provides PWM for BLDC control, precise time-stamping, and ultra-low-power wake-up from sleep modes. |
| Security & Safety | SCE5 (AES128/256, GHASH, TRNG), CAC, IWDT, SRAM ECC, MPU - meets IEC 61508 SIL2 requirements for functional safety in industrial equipment. |
Pinout & Package
Package: 64-pin QFN (8 mm × 8 mm, 0.4 mm pitch), RoHS-compliant Sn finish, operating temperature range −40°C to +105°C.
| 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 CAN with ±0.25% accuracy over temperature. |
| XCIN / XCOUT | Sub-clock oscillator interface | 32.768 kHz crystal connection for RTC calendar operation and low-power wake-up timing. |
| 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_SEG0–37 / SLCD_COM0–7 | Segment LCD driver outputs | Direct drive of up to 38 segments × 8 commons - supports segmented displays without external glass drivers. |
| CTSU_S0–26 | Capacitive touch electrode inputs | 27-channel CTSU with self-capacitance measurement - enables robust touch detection through thick overlays (up to 8 mm plastic). |
| GPTx_GTIOCA/B | PWM output / capture input | Hardware-timed 3-phase BLDC control outputs (GTOUUP/GTOULO etc.) - supports sensorless commutation with hall sensor inputs GTIU/GTIV/GTIW. |
Key Features
| Feature | Design Value |
|---|---|
| Segment LCD + CTSU co-integration | Single-chip solution for touch-enabled segment displays - eliminates separate touch controller and LCD bias IC, reducing layer count and EMI. |
| USB Battery Charging 1.2 support | Enables direct charging of connected devices (e.g., handheld tools) from MCU's 5-V supply - no external charger IC required. |
| Event Link Controller (ELC) | Hardware routing of 128+ peripheral events - cuts interrupt latency to <100 ns and frees CPU cycles for application logic. |
| Secure Crypto Engine 5 (SCE5) | Hardware-accelerated AES-128/256 and TRNG - achieves 10× faster encryption than software-only M4, with side-channel resistance. |
| Low-power AGT timers | Two independent 16-bit asynchronous timers running on LOCO (32.768 kHz) - wake system from deep sleep in <1 μs with configurable timeout. |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
Use Scenario: A wall-mounted factory control panel with 4-digit 7-segment LCD, 5 tactile buttons, and USB configuration port. IC Role / Device Role / Timing Role: R7FA4M1AB3CNB#AC0 serves as main controller, driving LCD segments, scanning capacitive touch overlay, managing USB CDC communication, and executing real-time PID loop for local actuator control. Use Value: Integrated SLCDC and CTSU reduce component count by 3 (LCD driver, touch IC, USB PHY); 48-MHz M4+FPU enables fast button debouncing and display refresh at 60 Hz. | Use Scenario: DIN-rail mounted electricity meter with tamper detection, pulse output, and optical USB programming interface. IC Role / Device Role / Timing Role: R7FA4M1AB3CNB#AC0 acts as metrology host, reading isolated ADC inputs via SPI, timestamping kWh pulses using RTC calendar, and authenticating firmware updates via SCE5. Use Value: Built-in CAC validates system clock accuracy for revenue-grade time stamping; IWDT + ECC SRAM ensures fail-safe reset during voltage sags. |
| Medical Patient Monitor | Automated Test Equipment (ATE) |
Use Scenario: Portable vital sign recorder with OLED-compatible segment display, ECG electrode inputs, and USB data export. IC Role / Device Role / Timing Role: R7FA4M1AB3CNB#AC0 acquires analog signals via ADC14 (14-bit @ 1 MSPS), filters ECG in real time using FPU, drives display via SLCDC, and exports logs via USB mass storage. Use Value: 14-bit ADC with internal reference and TSN enables calibrated body temperature and lead-off detection; USB FS + BC 1.2 allows charging while transferring data. | Use Scenario: Benchtop calibration tool with rotary encoder interface, LED status indicators, and CAN bus diagnostics port. IC Role / Device Role / Timing Role: R7FA4M1AB3CNB#AC0 functions as protocol bridge - receives commands via SCI UART, executes test sequences using GPT PWM, reads encoder position via AGT edge counting, and reports results over CAN. Use Value: ELC links encoder edges directly to AGT start/stop - eliminates polling overhead; CAN module supports ISO 11898-1 compliant diagnostics at 1 Mbps. |
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 package (10 mm × 10 mm, 0.5 mm pitch), same core/peripherals | Preferred for through-hole prototyping or legacy PCB rework where QFN reflow is unavailable | Select R7FA4M1AB3CFM if board assembly uses wave soldering or requires larger pad spacing for manual inspection. |
| R7FA4M2AB3CNB | Same 64-pin QFN package but with 5V-tolerant I/O (9 pins vs. 7), higher CAN mailbox count (32 vs. 32), and added QSPI interface | Better suited for systems needing external flash expansion or interfacing with 5-V sensors without level shifters | Choose R7FA4M2AB3CNB only if QSPI boot or native 5-V I/O tolerance is required - otherwise R7FA4M1AB3CNB#AC0 offers identical HMI functionality at lower cost. |
Compared with R7FA4M1AB3CFM, R7FA4M1AB3CNB#AC0 enables finer pitch layout and better thermal dissipation in compact enclosures; versus R7FA4M2AB3CNB, it delivers identical touch-LCD performance with reduced BOM cost where QSPI and extra 5-V I/O are unnecessary.
Availability
R7FA4M1AB3CNB#AC0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, medical patient monitors, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA4M1AB3CNB#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 automotive, industrial, and enterprise applications.
The RA4M1 Group targets cost-sensitive, low-power industrial HMI and IoT edge nodes - designed to integrate LCD/touch, USB, CAN, and security into a single chip without external support components.
FAQ
What is the maximum operating frequency of the R7FA4M1AB3CNB#AC0?
The R7FA4M1AB3CNB#AC0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M4 core with FPU. This speed is achievable across the full −40°C to +105°C temperature range when powered at 2.4–5.5 V, and is supported by the on-chip HOCO oscillator or external crystal.
Does the R7FA4M1AB3CNB#AC0 support USB device mode with battery charging capability?
Yes, the R7FA4M1AB3CNB#AC0 integrates a USB 2.0 Full-Speed Module compliant with Battery Charging Specification 1.2. It supports USB device mode with on-chip transceiver and internal 3.3-V LDO, enabling simultaneous data transfer and charging of connected peripherals from a 5-V supply.
How many capacitive touch channels does the R7FA4M1AB3CNB#AC0 support?
The R7FA4M1AB3CNB#AC0 supports up to 27 capacitive touch sensing channels via its integrated CTSU. This is confirmed in Table 1.14 of the datasheet for the NB (64-pin QFN) package variant, matching the pin count and electrode allocation for this specific part number.
What type of LCD display can be driven directly by the R7FA4M1AB3CNB#AC0?
The R7FA4M1AB3CNB#AC0 features a Segment LCD Controller (SLCDC) capable of driving up to 38 segments × 4 commons or 34 segments × 8 commons. It supports internal voltage boosting and contrast adjustment - enabling direct drive of multiplexed segment LCDs without external bias generators.
Is the R7FA4M1AB3CNB#AC0 pin-compatible with other RA4M1 group members?
No - the R7FA4M1AB3CNB#AC0 uses a 64-pin QFN package (PWQN0064LA-A), while other RA4M1 variants use LQFP, LGA, or different QFN footprints. Pin compatibility exists only within the same package type (e.g., R7FA4M1AB3CNB and R7FA4M1AB3CNE share 64-pin QFN pinout), not across package families.
R7FA4M1AB3CNB#AC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 49
- 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 18x14b SAR; D/A 2x8b, 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA4M1AB3CNB#AC0 FAQ
1.How can I place an order for R7FA4M1AB3CNB#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA4M1AB3CNB#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 R7FA4M1AB3CNB#AC0 reliable?
The price and inventory of R7FA4M1AB3CNB#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA4M1AB3CNB#AC0 is usually 5 days.
3.What payment methods are accepted for R7FA4M1AB3CNB#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA4M1AB3CNB#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA4M1AB3CNB#AC0?
R7FA4M1AB3CNB#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA4M1AB3CNB#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 R7FA4M1AB3CNB#AC0?
For technical support, including R7FA4M1AB3CNB#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA4M1AB3CNB#AC0 requirements.
6.How does Aetrix verify that R7FA4M1AB3CNB#AC0 is sourced from the original manufacturer or authorized distributors?
All R7FA4M1AB3CNB#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 R7FA4M1AB3CNB#AC0 meets industry standards.
7.What is the process for return or replacement of R7FA4M1AB3CNB#AC0?
All R7FA4M1AB3CNB#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA4M1AB3CNB#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 R7FA4M1AB3CNB#AC0 part is unused and in its original packaging.
Return procedure for R7FA4M1AB3CNB#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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