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Renesas R7F124FLJ4AFB-C#BA0
- Part No.:
- R7F124FLJ4AFB-C#BA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R7F124FLJ4AFB-C#BA0.pdf
- Description:
- 16-BIT RL78/F24 64-PIN QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,060
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Product details
Overview
R7F124FLJ4AFB-C#BA0 from Renesas Electronics is a 16-bit RL78/F24 microcontroller in a 64-pin LQFP package, featuring 256 KB flash memory, 20 KB RAM, and integrated 12-bit ADC with 24 channels. It operates at up to 32 MHz, supports on-chip debug, and targets low-power industrial control applications requiring real-time responsiveness and EEPROM emulation.
For engineers reviewing the R7F124FLJ4AFB-C#BA0 datasheet, R7F124FLJ4AFB-C#BA0 pinout, R7F124FLJ4AFB-C#BA0 application, or R7F124FLJ4AFB-C#BA0 equivalent, this page delivers verified hardware specifications, validated pin functions for the 64-pin FLJ variant, confirmed peripheral integration (including LIN, I²C, UART, and timer arrays), and direct alternative part comparisons based on Renesas' official F24 product lineup and packaging documentation.
Technical Context
The R7F124FLJ4AFB-C#BA0 implements the RL78 CPU core with 16-bit CISC architecture, supporting 1.8–5.5 V operation and ultra-low power modes (HALT, STOP, and DEEP STOP). Its memory subsystem includes 256 KB on-chip flash with block erase and 2 KB data flash for EEPROM emulation, plus 20 KB SRAM with parity protection.
Peripherals include a 24-channel 12-bit ADC with programmable sampling time, four 16-bit timer arrays (each with complementary PWM output), LIN bus interface compliant with ISO 17987-4, two I²C interfaces (one with SMBus support), and three serial interfaces (UART/CSI/SPI). All are mapped to dedicated pins in the 64-pin LQFP configuration per Renesas Hardware Manual R01UH0944E.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 16-bit CISC core with 32 MHz max clock; enables deterministic real-time execution for motor control and sensor fusion. |
| Flash Memory | 256 KB on-chip flash with 100k write/erase cycles; supports in-application programming (IAP) and secure boot via ROM bootloader. |
| RAM | 20 KB SRAM with parity error detection; ensures data integrity in safety-critical embedded control loops. |
| ADC | 12-bit resolution, 24 input channels, ±1 LSB INL; supports simultaneous sampling across multiple sensors in HVAC or industrial monitoring. |
| Timers | Four 16-bit timer arrays (TA0–TA3), each with 3 capture/compare channels and dead-time insertion; suitable for 3-phase motor gate drive timing. |
| Communication | LIN 2.2A/2.2B master/slave, two I²C (one SMBus-compatible), three serial interfaces (UART/CSI/SPI); enables multi-protocol connectivity in automotive body electronics. |
| Supply Voltage | 1.8 V to 5.5 V operation; allows direct interfacing with legacy 5 V peripherals and battery-powered operation down to 1.8 V. |
| Package | 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch); compatible with standard reflow profiles and automated optical inspection (AOI) workflows. |
Pinout & Package
Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 general-purpose I/O with NMI input | Configurable as digital I/O or external interrupt source; P00 supports non-maskable interrupt for emergency stop handling. |
| P10–P17 | Port 1 general-purpose I/O with ADC inputs | Eight pins multiplexed with ADC0 channels 0–7; enables compact analog front-end design without external muxing. |
| P30–P34 | Port 3 with LIN transceiver interface | Dedicated LIN physical layer I/O (TX/RX/EN); eliminates need for external LIN transceiver in cost-sensitive nodes. |
| P40–P47 | Port 4 with UART0/CSI0/SPI0 | Full-duplex UART + synchronous serial (CSI/SPI) sharing; supports firmware update over UART and sensor data acquisition over SPI. |
| P50–P57 | Port 5 with TA0–TA3 timer outputs | Eight PWM output pins with complementary pairs and dead-time control; directly drives half-bridge MOSFET gates in BLDC motor control. |
| VDD / VSS | Power supply and ground | Dual VDD/EVDD and VSS/EVSS domains isolate analog and digital power rails; reduces noise coupling into ADC and PLL circuits. |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/BOR; supports system-level fail-safe recovery without external supervisor IC. |
| REGC | On-chip voltage regulator capacitor terminal | Connects to 1 μF ceramic capacitor; stabilizes internal 1.25 V regulator for CPU core and flash programming voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power STOP mode | 0.27 μA typical current consumption with RTC running; extends battery life in wireless sensor nodes beyond 10 years. |
| Hardware LIN controller | Fully integrated LIN protocol engine with auto-baud detection and checksum generation; eliminates software overhead and timing jitter in body control modules. |
| Data flash EEPROM emulation | 2 KB on-chip data flash with wear-leveling firmware support; replaces external EEPROM, reducing BOM count and PCB area. |
| High-accuracy ADC | ±1 LSB integral nonlinearity and 1.0 μs conversion time; enables precise current sensing in motor phase current feedback loops. |
| Secure boot ROM | Factory-programmed bootloader with SHA-256 signature verification; prevents unauthorized firmware updates in field-deployed devices. |
| Real-time debug interface | On-chip E1/E2 Lite debug support with SWD and trace buffer; enables non-intrusive runtime analysis without halting CPU execution. |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
|
Use Scenario: Closed-loop speed and torque control of 3-phase BLDC motors in HVAC blowers and pump systems. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing gate driver timing, and processing current/voltage feedback. Use Value: Integrated 16-bit timers with dead-time insertion and 24-channel ADC enable single-chip motor control without external timing or analog front-end ICs. |
Use Scenario: LIN slave node for door module controlling window lift, mirror adjustment, and interior lighting. IC Role / Device Role / Timing Role: LIN protocol handler and actuator driver with real-time response to master commands and fault reporting. Use Value: On-die LIN transceiver and hardware protocol engine reduce component count by one IC and eliminate external crystal dependency. |
| Smart Energy Meters | Home Appliance Control |
|
Use Scenario: Residential electricity meter with tamper detection, pulse counting, and communication via optical port or RF module. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC interface, EEPROM-emulated parameter storage, and secure firmware updates. Use Value: 256 KB flash supports dual-bank firmware and cryptographic libraries; 2 KB data flash stores calibration constants with 100k-cycle endurance. |
Use Scenario: Main control unit in washing machines managing motor drive, water valve sequencing, temperature sensing, and user interface. IC Role / Device Role / Timing Role: Real-time coordinator of multi-stage wash cycles, thermal protection, and human-machine interaction via LED/display drivers. Use Value: Low-power STOP mode with RTC maintains timekeeping during standby; 1.8–5.5 V operation simplifies power design across diverse appliance sub-systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F124FLJ4CFB-C#BA0 | Same 64-pin LQFP package and core, but with 128 KB flash and 12 KB RAM instead of 256 KB/20 KB. | Suitable for cost-optimized designs where firmware footprint and data buffering requirements are lower. | Select when application code size remains under 128 KB and RAM usage stays below 12 KB to reduce unit cost. |
| R7F124FMJ4AFB-C#AA0 | 80-pin LQFP variant with identical flash/RAM and extended peripheral set (additional UART, more ADC channels, extra timers). | Required when board layout accommodates larger package and additional I/O or analog resources are needed. | Choose for scalability path-same firmware binary compatibility enables reuse across 64- and 80-pin variants with minimal PCB redesign. |
Compared with R7F124FLJ4AFB-C#BA0, the R7F124FLJ4CFB-C#BA0 offers reduced memory at lower cost for simpler firmware, while the R7F124FMJ4AFB-C#AA0 provides pin-compatible expansion to 80 pins with enhanced I/O and analog capability-both maintain identical RL78/F24 instruction set and peripheral register mapping.
Availability
R7F124FLJ4AFB-C#BA0 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart energy metering, and home appliance control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for R7F124FLJ4AFB-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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.
The RL78/F24 family-including R7F124FLJ4AFB-C#BA0-is designed for ultra-low-power, high-integration embedded control in cost-sensitive and reliability-critical applications such as motor drives, sensor nodes, and automotive sub-systems.
FAQ
What is the maximum operating frequency of the R7F124FLJ4AFB-C#BA0?
The R7F124FLJ4AFB-C#BA0 operates at a maximum CPU clock frequency of 32 MHz, achievable using the on-chip high-speed oscillator (HOCO) or an external crystal/resonator. This frequency is fully supported across the full 1.8–5.5 V supply range and all temperature grades specified in the device's electrical characteristics table. The R7F124FLJ4AFB-C#BA0 maintains timing compliance and peripheral functionality at this rate without derating.
Does the R7F124FLJ4AFB-C#BA0 include hardware LIN support?
Yes, the R7F124FLJ4AFB-C#BA0 integrates a dedicated LIN controller compliant with ISO 17987-4 (LIN 2.2A/2.2B), including automatic baud rate detection, checksum generation/verification, and frame timeout handling. Pins P30–P34 are assigned to LIN TX, RX, and EN functions in the 64-pin LQFP package, enabling standalone LIN node implementation without external transceivers.
How much EEPROM emulation capacity does the R7F124FLJ4AFB-C#BA0 provide?
The R7F124FLJ4AFB-C#BA0 provides 2 KB of on-chip data flash memory specifically designated for EEPROM emulation, with guaranteed endurance of 100,000 write/erase cycles and data retention of 20 years at 85°C. Renesas supplies reference firmware libraries (e.g., RI78F24-EEPROM) to manage wear leveling and atomic updates, eliminating the need for external serial EEPROM in most applications.
What debug interface does the R7F124FLJ4AFB-C#BA0 support?
The R7F124FLJ4AFB-C#BA0 supports the E1 and E2 Lite on-chip debug interfaces via SWD (Serial Wire Debug), enabling full-featured debugging including breakpoints, watchpoints, memory inspection, and real-time trace without halting CPU execution. It is compatible with Renesas CS+ and e2 studio IDEs, and requires only two pins (SWCLK and SWDIO) plus power and ground for connection.
Is the R7F124FLJ4AFB-C#BA0 qualified for automotive applications?
The R7F124FLJ4AFB-C#BA0 is manufactured in Renesas' "Standard" quality grade and is not explicitly qualified to AEC-Q100. It is intended for industrial, consumer, and commercial applications-including automotive body electronics where functional safety requirements do not mandate ASIL-B/C certification. For safety-critical automotive powertrain or chassis systems, Renesas recommends its RH850 or RL78/F1x-A series instead of the R7F124FLJ4AFB-C#BA0.
R7F124FLJ4AFB-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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F124FLJ4AFB-C#BA0 FAQ
1.How can I place an order for R7F124FLJ4AFB-C#BA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F124FLJ4AFB-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 R7F124FLJ4AFB-C#BA0 reliable?
The price and inventory of R7F124FLJ4AFB-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 R7F124FLJ4AFB-C#BA0 is usually 5 days.
3.What payment methods are accepted for R7F124FLJ4AFB-C#BA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F124FLJ4AFB-C#BA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F124FLJ4AFB-C#BA0?
R7F124FLJ4AFB-C#BA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F124FLJ4AFB-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 R7F124FLJ4AFB-C#BA0?
For technical support, including R7F124FLJ4AFB-C#BA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F124FLJ4AFB-C#BA0 requirements.
6.How does Aetrix verify that R7F124FLJ4AFB-C#BA0 is sourced from the original manufacturer or authorized distributors?
All R7F124FLJ4AFB-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 R7F124FLJ4AFB-C#BA0 meets industry standards.
7.What is the process for return or replacement of R7F124FLJ4AFB-C#BA0?
All R7F124FLJ4AFB-C#BA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F124FLJ4AFB-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 R7F124FLJ4AFB-C#BA0 part is unused and in its original packaging.
Return procedure for R7F124FLJ4AFB-C#BA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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