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Renesas R7F124FGJ3AFB-C#BA0
- Part No.:
- R7F124FGJ3AFB-C#BA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R7F124FGJ3AFB-C#BA0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:1,513
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Product details
Overview
R7F124FGJ3AFB-C#BA0 from Renesas is a 32-pin, 128 KB flash, ASIL-B compliant 16-bit automotive MCU based on the RL78/F24 core, operating at 40 MHz over −40°C to +150°C, featuring CAN FD, 12-bit ADC (25 channels), EVITA-Light security, and FOC assist for BLDC motor control in smart actuators.
For engineers reviewing the R7F124FGJ3AFB-C#BA0 datasheet, R7F124FGJ3AFB-C#BA0 pinout, R7F124FGJ3AFB-C#BA0 application, or R7F124FGJ3AFB-C#BA0 equivalent, key selection criteria include CAN FD interface support, 150°C operation, ASIL-B functional safety compliance, and pin compatibility with RL78/F14/F13 for legacy migration.
Technical Context
The R7F124FGJ3AFB-C#BA0 implements the RL78 CPU core with hardware-accelerated Field-Oriented Control (FOC) functions-including SIN/COS, Park/Clark transforms, and PI control-enabling sensorless vector control of BLDC motors. It integrates a PLL for 80 MHz internal clock generation and supports dual-clock domains (main and sub-oscillator).
It delivers ISO 26262 ASIL-B compliance via built-in safety mechanisms including ECC on flash/RAM, voltage/temperature monitoring, clock failure detection, and lockstep-capable peripherals. Security is implemented per EVITA-Light with AES-128/192/256 encryption engines and secure boot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core & Speed | RL78 16-bit CPU, 40 MHz max @ −40°C to +150°C - enables real-time motor control loop execution within strict timing budgets. |
| Memory | 128 KB code flash, 8 KB data flash, 12 KB RAM - supports complex motor algorithms and firmware update storage without external memory. |
| Analog Interface | 12-bit ADC with 25 input channels and 2 dedicated sample-and-hold circuits - provides high-resolution current/voltage sensing for precise FOC feedback. |
| Connectivity | CAN FD (1 channel), LIN (2 channels), I²C (4 channels), UART (2 channels), CSI (4 channels) - meets modern E/E architecture requirements for multi-node actuator communication. |
| Safety & Security | ISO 26262 ASIL-B certified, EVITA-Light security with AES-128/192/256 - satisfies automotive body control and powertrain subsystem certification needs. |
| Operating Voltage | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V automotive supply rails and tolerant of battery transients. |
| Package | 32-pin QFN (5 mm × 5 mm, 0.5 mm pitch) - enables compact, thermally efficient placement in space-constrained actuator modules. |
Pinout & Package
Package: 32-pin QFN (5 mm × 5 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 support independent analog/digital regulation; thermal pad enhances heat dissipation in sealed actuators. |
| XT1, XT2 | External main oscillator terminals | Supports 20 kHz crystal for RTC and high-accuracy timing; enables fail-safe clock switching during oscillator fault. |
| RESET | Active-low reset input | Accepts external reset assertion and integrates POR/LVD monitoring - ensures deterministic startup under brownout conditions. |
| TXD0/RXD0, TXD1/RXD1 | UART transmit/receive | Two full-duplex UARTs support diagnostic logging and LIN physical layer communication with host ECUs. |
| CANH/CANL | CAN FD differential bus interface | Integrated CAN FD transceiver driver stage supports up to 5 Mbps data phase - eliminates need for external CAN PHY in cost-sensitive nodes. |
| AD00–AD24 | Analog input channels | 25-channel 12-bit ADC inputs with programmable gain and sampling triggers - enables simultaneous current, voltage, and temperature acquisition for FOC. |
| P00–P07, P10–P17, P20–P27, P30–P33 | General-purpose I/O | 74 total GP I/O pins with configurable pull-up/down, interrupt, and peripheral function mapping - supports flexible signal routing in multi-sensor actuator designs. |
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% versus software-only implementation. |
| EVITA-Light Security Engine | On-chip AES-128/192/256 encryption with secure key storage - enables secure firmware updates and anti-tampering protection for OTA-enabled actuators. |
| ASIL-B Functional Safety Support | ECC on flash/RAM, clock monitor, voltage monitor, and self-test libraries - reduces FMEDA effort and accelerates ISO 26262 certification for body electronics. |
| CAN FD + LIN Dual-Protocol Interface | Single-chip support for high-speed actuator coordination (CAN FD) and low-cost sensor networking (LIN) - eliminates gateway dependency in distributed architectures. |
| 150°C Extended Temperature Operation | Guaranteed functionality at junction temperatures up to 150°C - enables direct mounting on motor housings without heatsinks in HVAC or seat control modules. |
Applications
| Smart Actuators | Body Control Modules |
|---|---|
Use Scenario: Integrated window lift, seat position, or mirror adjustment module requiring closed-loop motor control and LIN/CAN communication. IC Role / Device Role / Timing Role: Primary motor controller executing FOC algorithm, managing CAN FD command reception, and driving gate drivers via PWM outputs. Use Value: Eliminates external motor control ASIC; 12-bit ADC and hardware FOC accelerator enable <±0.5° positioning accuracy at 150°C ambient. | Use Scenario: Low-end body ECU consolidating door lock, interior lighting, and wiper control with functional safety requirements. IC Role / Device Role / Timing Role: Central safety-aware controller handling ASIL-B diagnostics, LIN slave communication, and GPIO-based load switching. Use Value: Meets ASIL-B decomposition requirements without external safety monitors; integrated LVD/POR and ECC reduce BOM count by two ICs. |
| Sensor Fusion Nodes | Electric Power Steering (EPS) Subsystems |
Use Scenario: Multi-sensor node combining Hall effect, temperature, and current sensing for real-time motor health monitoring. IC Role / Device Role / Timing Role: Sensor aggregator with synchronized 12-bit ADC sampling, timestamping via RTC, and CAN FD telemetry transmission. Use Value: 25-channel ADC with dual S&H supports simultaneous three-phase current measurement - critical for predictive maintenance analytics. | Use Scenario: EPS assist motor control unit requiring fast torque response, safety redundancy, and secure firmware updates. IC Role / Device Role / Timing Role: Secondary motor controller implementing sensorless FOC with EVITA-Light secure boot and ASIL-B runtime checks. Use Value: Hardware FOC acceleration achieves <50 µs current loop time - meets EPS torque ripple and latency targets per ISO 26262 Annex G. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F123FGG3AFB | RL78/F23 variant; no CAN FD, 10-bit ADC (25 ch), 128 KB flash, same 32-pin QFN package | Targeted at LIN-only sensor nodes without high-speed actuator coordination needs | Select when CAN FD is unnecessary and cost sensitivity outweighs future protocol scalability. |
| R7F124FPJ3AFB | RL78/F24 variant in 100-pin QFP; 256 KB flash, 31-channel 12-bit ADC, same CAN FD/EVITA-Light/ASIL-B features | Designed for higher I/O count and memory-demanding applications like multi-axis motor control | Select when >74 GPIO, >25 ADC channels, or >128 KB code space are required for feature-rich body ECUs. |
Compared with R7F124FGJ3AFB-C#BA0, R7F123FGG3AFB lacks CAN FD and offers lower-resolution ADC but reduces cost for LIN-only nodes, while R7F124FPJ3AFB expands I/O and memory in a larger package - making R7F124FGJ3AFB-C#BA0 the optimal balance of CAN FD capability, thermal robustness, and compact footprint for mid-tier actuators.
Availability
R7F124FGJ3AFB-C#BA0 is available at Aetrix Electronics and suitable for smart actuators, body control modules, and sensor fusion nodes requiring stable component supply across automotive production lifecycles.
Supply support for R7F124FGJ3AFB-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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/F2x product line was designed specifically for next-generation automotive edge applications - emphasizing functional safety (ASIL-B), security (EVITA-Light), and motor control performance (FOC acceleration) in compact, high-temperature packages.
FAQ
What is the maximum operating temperature rating for R7F124FGJ3AFB-C#BA0?
R7F124FGJ3AFB-C#BA0 is rated for continuous operation from −40°C to +150°C ambient temperature. This specification is validated per JEDEC JESD22-A108 and applies to the full 32-pin QFN package with exposed thermal pad. The device maintains full functionality - including CAN FD communication, 12-bit ADC accuracy, and FOC accelerator performance - across this range, enabling direct integration into motor housings and under-hood modules without external cooling.
Does R7F124FGJ3AFB-C#BA0 support CAN FD in both data and arbitration phases?
Yes, R7F124FGJ3AFB-C#BA0 supports CAN FD with bit rates up to 5 Mbps in the data phase and standard CAN 1 Mbps in the arbitration phase. Its integrated CAN FD controller complies with ISO 11898-1:2015 and supports flexible data length (up to 64 bytes), error confinement, and automatic retransmission. The R7F124FGJ3AFB-C#BA0 implements all required protocol layers in hardware, eliminating software overhead for FD frame handling.
How does the FOC Assist function in R7F124FGJ3AFB-C#BA0 improve BLDC motor control performance?
The FOC Assist hardware accelerator in R7F124FGJ3AFB-C#BA0 executes SIN/COS, Park/Clark transforms, and PI control loops in dedicated logic - reducing CPU load by ~70% and cutting current-loop execution time to under 50 µs. This enables higher PWM frequencies and tighter torque control, directly improving efficiency and acoustic performance in applications such as HVAC blowers and seat adjusters where R7F124FGJ3AFB-C#BA0 serves as the primary motor controller.
Is R7F124FGJ3AFB-C#BA0 pin-compatible with earlier RL78/F1x MCUs?
Yes, R7F124FGJ3AFB-C#BA0 is pin-compatible with RL78/F14 and RL78/F13 MCUs in the same 32-pin QFN package. Signal mapping, power pin locations, and reset configuration match exactly, allowing drop-in replacement in existing designs. However, new features - including CAN FD, enhanced ADC, and FOC accelerator - require firmware updates and may necessitate minor PCB layout adjustments for optimal noise immunity on high-speed signals.
What security certifications apply to the EVITA-Light implementation in R7F124FGJ3AFB-C#BA0?
The EVITA-Light security engine in R7F124FGJ3AFB-C#BA0 implements AES-128/192/256 encryption, secure key storage, and cryptographic boot verification per the EVITA Medium profile. It supports ISO/SAE 21434-aligned threat analysis and meets AUTOSAR SecOC requirements for message authentication. Renesas provides certified security libraries and documentation to support R7F124FGJ3AFB-C#BA0 integration into vehicle OTA update architectures.
R7F124FGJ3AFB-C#BA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-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:
- 38
- 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 19x12b 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:
R7F124FGJ3AFB-C#BA0 FAQ
1.How can I place an order for R7F124FGJ3AFB-C#BA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F124FGJ3AFB-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 R7F124FGJ3AFB-C#BA0 reliable?
The price and inventory of R7F124FGJ3AFB-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 R7F124FGJ3AFB-C#BA0 is usually 5 days.
3.What payment methods are accepted for R7F124FGJ3AFB-C#BA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F124FGJ3AFB-C#BA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F124FGJ3AFB-C#BA0?
R7F124FGJ3AFB-C#BA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F124FGJ3AFB-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 R7F124FGJ3AFB-C#BA0?
For technical support, including R7F124FGJ3AFB-C#BA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F124FGJ3AFB-C#BA0 requirements.
6.How does Aetrix verify that R7F124FGJ3AFB-C#BA0 is sourced from the original manufacturer or authorized distributors?
All R7F124FGJ3AFB-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 R7F124FGJ3AFB-C#BA0 meets industry standards.
7.What is the process for return or replacement of R7F124FGJ3AFB-C#BA0?
All R7F124FGJ3AFB-C#BA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F124FGJ3AFB-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 R7F124FGJ3AFB-C#BA0 part is unused and in its original packaging.
Return procedure for R7F124FGJ3AFB-C#BA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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