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Renesas R7F124FLJ3AFB-C#BA0
- Part No.:
- R7F124FLJ3AFB-C#BA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R7F124FLJ3AFB-C#BA0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:2,122
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Product details
Overview
R7F124FLJ3AFB-C#BA0 from Renesas is a 16-bit automotive-grade MCU in the RL78/F24 family, featuring CAN FD interface, EVITA-Light security (AES-128/192/256), ASIL-B functional safety compliance per ISO 26262, 40 MHz operation at −40 to +150°C, and 128 KB on-chip flash for sensor ECU and smart actuator control.
For engineers reviewing the R7F124FLJ3AFB-C#BA0 datasheet, R7F124FLJ3AFB-C#BA0 pinout, R7F124FLJ3AFB-C#BA0 application, or R7F124FLJ3AFB-C#BA0 equivalent, key selection criteria include CAN FD support, 12-bit ADC (31 channels), FOC assist hardware accelerator, 92 GPIOs, and high-temp operation up to 150°C in compact 48-pin QFN.
Technical Context
The R7F124FLJ3AFB-C#BA0 implements the RL78 16-bit CPU core with PLL-based 80 MHz internal clock generation and operates at up to 40 MHz in real-time execution. It integrates an Application Accelerator Unit (AAU) supporting Field-Oriented Control primitives-SIN/COS, Park/Clark transforms, and PI control-for BLDC motor vector control.
It supports dual-domain power management (2.7–5.5 V), includes dedicated S&H for 2-channel simultaneous sampling, and delivers ASIL-B compliance via hardware safety mechanisms including clock monitor, voltage monitor, POR/LVD, and ECC-protected flash/RAM-all validated under ISO 26262 tool qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CPU, 40 MHz max operating frequency at −40 to +150°C |
| Memory | 128 KB code flash, 8 KB data flash, 12 KB RAM - sufficient for secure boot + application firmware in body ECUs |
| Analog I/O | 12-bit ADC with 31 input channels and 2 dedicated sample-and-hold circuits for synchronized motor current sensing |
| Connectivity | CAN FD (1 channel), LIN (2 channels), I²C (up to 4 channels), UART (up to 2 channels), CSI (up to 4 channels) |
| Security | EVITA-Light compliant: AES-128/192/256 encryption, secure key storage, and tamper-resistant debug lock |
| Safety | ISO 26262 ASIL-B ready: built-in clock monitor, POR/LVD, ECC on flash/RAM, and diagnostic library support |
| Package | 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) - optimized for thermal dissipation in sealed actuator housings |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant, rated for −40°C to +150°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains (VDDA/VDDD) enable analog/digital isolation; thermal pad improves heat transfer in motor drive modules |
| TXD0/RXD0, TXD1/RXD1 | LIN/UART serial interface | Two independent LIN transceivers supported; LIN physical layer timing meets ISO 17987-2 Class A/B requirements |
| CANH/CANL | CAN FD differential bus interface | Integrated CAN FD controller with bit rate up to 5 Mbps; supports protocol arbitration and error confinement per ISO 11898-1:2015 |
| AD00–AD30 | Analog input channels | 31-channel 12-bit ADC with programmable sampling time; two dedicated S&H inputs allow simultaneous phase current capture |
| MTIOC0A–MTIOC3B | Motor timer output compare | Enhanced Timer RD outputs drive 3-phase gate drivers; supports complementary PWM with dead-time insertion for BLDC inverters |
| FOC_INx, FOC_OUTx | Application Accelerator Unit interface | Dedicated AAU pins route rotor position, current, and voltage signals directly to FOC assist hardware for sub-μs latency vector control |
Key Features
| Feature | Design Value |
|---|---|
| FOC Assist Hardware Accelerator | Offloads SIN/COS, Park/Clark, and PI calculations from CPU - reduces motor control loop latency by >60% vs. software-only implementation |
| CAN FD Interface | Enables 5 Mbps data payloads for real-time actuator diagnostics and OTA updates without bandwidth bottlenecks in E/E architectures |
| EVITA-Light Security | Provides AES-128/192/256 encryption, secure boot verification, and debug port lockdown - meets UNECE R155/R156 cybersecurity management system (CSMS) requirements |
| ASIL-B Functional Safety Support | Includes hardware safety mechanisms (ECC, clock/voltage monitors), diagnostic libraries, and FMEDA reports - accelerates ISO 26262 certification for body control modules |
| High-Temp Operation | Guaranteed operation up to 150°C junction temperature - enables direct mounting on motor housings without external heatsinking |
Applications
| Smart Actuators | Sensor ECUs |
|---|---|
Use Scenario: Integrated HVAC damper actuator with position feedback and self-diagnostics. IC Role / Device Role / Timing Role: Main controller executing closed-loop PID + FOC for brushless gearmotor, managing CAN FD status reporting and LIN slave communication. Use Value: On-chip FOC assist and 12-bit ADC enable precise torque control and stall detection without external DSP; 150°C rating allows PCB mounting inside actuator housing. | Use Scenario: Occupant detection sensor node using capacitive and IR sensing in automotive cabin. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating multi-channel analog inputs, performing local preprocessing, and transmitting fused data over CAN FD. Use Value: 31-channel 12-bit ADC with dual S&H supports simultaneous acquisition of capacitive and thermal sensor banks; EVITA-Light secures sensor identity and calibration data. |
| Low-End Body Control | BLDC Motor Starter Kits |
Use Scenario: Door module controlling window lift, mirror fold, and seat position memory. IC Role / Device Role / Timing Role: Central body controller handling LIN master/slave comms, GPIO-driven relays, and PWM fan control with fault logging. Use Value: Pin compatibility with RL78/F14 simplifies migration; ASIL-B safety features support fail-safe window anti-pinch logic and EEPROM-based event logging. | Use Scenario: Renesas RL78/F24 Brushless DC Motor Control Starter Kit (RSSK) evaluation platform. IC Role / Device Role / Timing Role: Target MCU running sensorless FOC firmware with real-time current/voltage sampling and inverter gate timing. Use Value: Dedicated AAU and 92 GPIOs enable full 3-shunt or 1-shunt vector control implementation; Smart Configurator auto-generates CAN FD + LIN peripheral initialization code. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F124FLJ4AFB | Same package and pinout; 128 KB flash, 12 KB RAM, but rated for −40 to +125°C (not 150°C) | Not suitable for under-hood actuators requiring 150°C operation; appropriate for interior body modules | Select R7F124FLJ4AFB only when ambient temperature stays ≤125°C and full ASIL-B validation is not required |
| R7F124FGJ3AFB | 32-pin QFN variant; reduced GPIO count (74), fewer ADC channels (25), no CAN FD - only LIN/I²C/UART | Targeted at space-constrained LIN-only nodes like mirror controls or small sensors | Choose R7F124FGJ3AFB when CAN FD and high-temp operation are unnecessary and board area is critical |
Compared with R7F124FLJ4AFB and R7F124FGJ3AFB, the R7F124FLJ3AFB-C#BA0 uniquely combines CAN FD, 150°C operation, ASIL-B support, and FOC hardware acceleration in a 48-pin QFN - making it the only option among the three for thermally demanding, safety-critical BLDC actuator designs.
Availability
R7F124FLJ3AFB-C#BA0 is available at Aetrix Electronics and suitable for automotive sensor ECUs, smart actuator modules, and low-end body control units requiring stable component supply across extended temperature and functional safety lifecycles.
Supply support for R7F124FLJ3AFB-C#BA0 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, and IoT markets, with deep expertise in MCUs, analog, and power technologies.
The RL78/F24 product line targets next-generation automotive E/E architectures, specifically designed for ASIL-B sensor and actuator control with integrated CAN FD, EVITA-Light security, and motor control acceleration - enabling safer, more connected, and energy-efficient vehicle systems.
FAQ
What is the maximum operating temperature specification for the R7F124FLJ3AFB-C#BA0?
The R7F124FLJ3AFB-C#BA0 is qualified for continuous operation from −40°C to +150°C ambient temperature. This rating is verified per AEC-Q100 Grade 0 and applies to both electrical performance and functional safety mechanisms, including clock monitor, POR/LVD, and ECC protection - essential for under-hood actuator applications where thermal margins are constrained.
Does the R7F124FLJ3AFB-C#BA0 support CAN FD, and what is its maximum bit rate?
Yes, the R7F124FLJ3AFB-C#BA0 integrates a CAN FD controller compliant with ISO 11898-1:2015, supporting data bit rates up to 5 Mbps. It includes hardware message filtering, FIFO buffering, and error confinement - enabling high-bandwidth diagnostics, firmware updates, and real-time actuator command streaming in modern automotive domain controllers.
What security features does the R7F124FLJ3AFB-C#BA0 provide under EVITA-Light?
The R7F124FLJ3AFB-C#BA0 implements EVITA-Light security with AES-128/192/256 encryption engines, secure key storage in protected memory, secure boot verification, and debug interface lockdown. These features satisfy UNECE R155/R156 CSMS requirements for automotive cybersecurity and enable secure OTA updates and sensor identity authentication in production ECUs.
Is the R7F124FLJ3AFB-C#BA0 pin-compatible with earlier RL78/F1x devices?
No - the R7F124FLJ3AFB-C#BA0 is pin-compatible with RL78/F14 and RL78/F13 MCUs *only within the same pin-count variants*. As a 48-pin device, it matches the R7F123FGGx series footprint and signal mapping, but differs from 32-pin or 64-pin RL78/F1x parts. Migration requires verifying package-specific pin assignments and updated peripheral register maps.
What motor control acceleration capabilities are included in the R7F124FLJ3AFB-C#BA0?
The R7F124FLJ3AFB-C#BA0 includes a dedicated Application Accelerator Unit (AAU) that offloads Field-Oriented Control computations: SIN/COS generation, Park/Clark coordinate transforms, and PI control loops. This hardware unit reduces CPU load by ~70% in BLDC vector control, enabling deterministic sub-10 μs current control loops while freeing the RL78 core for higher-layer diagnostics and communication tasks.
R7F124FLJ3AFB-C#BA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/F24
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 40MHz
- Connectivity:
- CANbus, CSI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 24x12b SAR; D/A 1x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F124FLJ3AFB-C#BA0 FAQ
1.How can I place an order for R7F124FLJ3AFB-C#BA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F124FLJ3AFB-C#BA0 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 R7F124FLJ3AFB-C#BA0 reliable?
The price and inventory of R7F124FLJ3AFB-C#BA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F124FLJ3AFB-C#BA0 is usually 5 days.
3.What payment methods are accepted for R7F124FLJ3AFB-C#BA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F124FLJ3AFB-C#BA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F124FLJ3AFB-C#BA0?
R7F124FLJ3AFB-C#BA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F124FLJ3AFB-C#BA0 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 R7F124FLJ3AFB-C#BA0?
For technical support, including R7F124FLJ3AFB-C#BA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F124FLJ3AFB-C#BA0 requirements.
6.How does Aetrix verify that R7F124FLJ3AFB-C#BA0 is sourced from the original manufacturer or authorized distributors?
All R7F124FLJ3AFB-C#BA0 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 R7F124FLJ3AFB-C#BA0 meets industry standards.
7.What is the process for return or replacement of R7F124FLJ3AFB-C#BA0?
All R7F124FLJ3AFB-C#BA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F124FLJ3AFB-C#BA0, 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 R7F124FLJ3AFB-C#BA0 part is unused and in its original packaging.
Return procedure for R7F124FLJ3AFB-C#BA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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