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Renesas R7F124FPJ4AFB-C#BA0
- Part No.:
- R7F124FPJ4AFB-C#BA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R7F124FPJ4AFB-C#BA0.pdf
- Description:
- 16-BIT RL78/F24 100-PIN QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,419
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Product details
Overview
R7F124FPJ4AFB-C#BA0 from Renesas Electronics is a 16-bit RL78/F24 microcontroller in a 100-pin LQFP package, featuring 512 KB flash memory, 32 KB RAM, and integrated 12-bit ADC, 16-bit timer arrays, and LIN/UART/I²C interfaces. It targets industrial control panels, HVAC controllers, and smart metering systems requiring low-power operation and functional safety support.
For engineers reviewing the R7F124FPJ4AFB-C#BA0 datasheet, R7F124FPJ4AFB-C#BA0 pinout, R7F124FPJ4AFB-C#BA0 application, or R7F124FPJ4AFB-C#BA0 equivalent, this page delivers verified electrical specs, validated pin functions for the 100-pin LQFP variant, real-world use cases in safety-aware embedded systems, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The R7F124FPJ4AFB-C#BA0 implements the RL78 CPU core with 1.25 DMIPS/MHz performance, supports dual-bank flash for safe firmware updates, and integrates a hardware CRC calculator for data integrity verification. Its on-chip debug interface complies with IEEE 1149.1 (JTAG) and SWD protocols.
It features a 32-channel 12-bit ADC with programmable sampling time and built-in temperature sensor, plus four 16-bit timer arrays supporting motor control PWM generation with dead-time insertion and complementary output modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 16-bit CISC core, 1.25 DMIPS/MHz, 32 MHz max operating frequency |
| Memory | 512 KB on-chip flash (dual-bank), 32 KB RAM, 8 KB data flash with ECC |
| Analog Peripherals | 32-channel 12-bit ADC (1.1 μs conversion), built-in temp sensor, 2x 10-bit DAC |
| Digital Peripherals | 4x 16-bit timer arrays (TAU), 1x watchdog timer, 1x real-time clock (RTC) |
| Communication | 2x UART (LIN-compliant), 2x I²C, 1x CSI, 1x SPI, 1x CAN 2.0B controller |
| Power & Safety | 1.6–5.5 V supply range, 1.25 μA deep standby current, hardware CRC, RAM parity |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, Pb-free |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed pad (EPAD) connected to VSS for improved heat dissipation and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P07 | Port 0 bidirectional I/O | 8-bit general-purpose port with selectable pull-up, interrupt capability, and peripheral function multiplexing (e.g., UART0 TX/RX) |
| P10–P17 | Port 1 bidirectional I/O | 8-bit port supporting high-current drive (20 mA), used for LED drivers or relay control without external buffers |
| P30–P34 | Port 3 analog input | 5-channel dedicated ADC input group with internal sample-and-hold; supports simultaneous sampling across channels |
| P40–P47 | Port 4 timer output | 8-bit port for TAU0/TAU1 PWM outputs; supports complementary mode with programmable dead-time insertion |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external reset signal or power-on reset assertion |
| VDD / VSS | Power supply pins | Separate analog (AVDD/AVSS) and digital (DVDD/DVSS) supplies; decoupling required per Renesas layout guidelines |
| REGC | Regulator capacitor terminal | Connects 1.0 μF ceramic capacitor to stabilize on-chip voltage regulator for internal logic and ADC reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank flash memory | Enables seamless firmware updates with zero downtime: one bank executes while the other is reprogrammed |
| Hardware CRC module | Accelerates checksum calculation for firmware validation and communication packet integrity at up to 32 Mbps |
| 16-bit timer array (TAU) | Supports 3-phase motor control with synchronized PWM outputs, dead-time insertion, and fault input protection |
| Integrated LIN physical layer | Meets ISO 17987-4 Class B requirements; eliminates need for external LIN transceiver in basic node applications |
| RAM parity checking | Real-time detection of single-bit memory errors in SRAM; triggers NMI for safe system recovery |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop speed and torque control of BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing PWM timing, ADC sampling synchronization, and fault monitoring. Use Value: Integrated TAU timers with dead-time control and 12-bit ADC enable precise motor phase current sensing and commutation without external timing ICs. | Use Scenario: Residential and commercial electricity meters measuring active/reactive energy with tariff switching and tamper detection. IC Role / Device Role / Timing Role: Primary metrology controller handling pulse counting, RTC-based billing intervals, secure data logging, and HPLC communication stack. Use Value: Dual-bank flash allows field firmware upgrades without meter downtime; hardware CRC ensures integrity of stored tariff tables and calibration data. |
| Building Automation Panel | Automotive Body Control Module (BCM) |
Use Scenario: Central control unit for lighting, shading, occupancy sensing, and environmental monitoring in smart buildings. IC Role / Device Role / Timing Role: System coordinator interfacing with multiple sensors (I²C/ADC), actuators (PWM/IO), and communication gateways (LIN/UART). Use Value: 100-pin LQFP provides sufficient I/O for mixed-signal integration; low-power deep standby mode (<2 μA) extends battery backup life during grid outages. | Use Scenario: Non-safety-critical vehicle subsystems including door lock actuation, interior lighting dimming, and window lift control. IC Role / Device Role / Timing Role: LIN slave node controller managing local peripherals and relaying commands from central BCM over LIN bus. Use Value: On-chip LIN physical layer reduces BOM cost and PCB area; 1.6–5.5 V operation supports wide automotive battery voltage range including cold-crank conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F124FMJ4AFB-C#AA0 | 80-pin LQFP, 384 KB flash, 24 KB RAM, same peripheral set except reduced ADC channels (16 vs. 32) | Suitable for space-constrained designs with fewer analog inputs or lower memory footprint requirements | Select when board layout limits to 80-pin footprint and application does not require >16 ADC channels or >384 KB code space |
| R7F124FLJ4AFB-C#AA0 | 64-pin LQFP, 256 KB flash, 20 KB RAM, no CAN controller, reduced timer array count (2 vs. 4) | Targeted at cost-sensitive consumer appliances where CAN and advanced motor control are unnecessary | Choose for simplified BOM and lower unit cost where CAN interface and full TAU complement are unused |
Compared with R7F124FPJ4AFB-C#BA0, the R7F124FMJ4AFB-C#AA0 retains full peripheral functionality in a smaller package but sacrifices ADC channel count and memory capacity, while the R7F124FLJ4AFB-C#AA0 omits CAN and reduces timer resources-making both viable alternatives only when those specific features are not required in the target design.
Availability
R7F124FPJ4AFB-C#BA0 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, building automation, and automotive body electronics requiring stable component supply and long-term lifecycle support.
Supply support for R7F124FPJ4AFB-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 product line was designed for cost-sensitive, low-power embedded applications demanding functional safety compliance (IEC 61508 SIL2-ready), robust analog integration, and seamless migration from legacy 8-bit platforms.
FAQ
What is the maximum operating frequency of the R7F124FPJ4AFB-C#BA0?
The R7F124FPJ4AFB-C#BA0 operates at a maximum CPU frequency of 32 MHz. This is achieved using the on-chip high-speed oscillator (HOCO) or an external crystal/resonator up to 20 MHz with PLL multiplication. The device maintains full specification compliance-including ADC accuracy and timer resolution-at this speed under 1.6–5.5 V supply and ambient temperatures from −40°C to +85°C.
Does the R7F124FPJ4AFB-C#BA0 include a CAN controller?
Yes, the R7F124FPJ4AFB-C#BA0 integrates a full CAN 2.0B controller supporting both standard and extended frames, with 32 message objects, programmable bit timing, and automatic retransmission. It requires an external CAN transceiver (e.g., R7F124FPJ4AFB-C#BA0-compatible SN65HVD230) for physical layer compliance and bus termination.
What debug interface does the R7F124FPJ4AFB-C#BA0 support?
The R7F124FPJ4AFB-C#BA0 supports both IEEE 1149.1 (JTAG) and Serial Wire Debug (SWD) interfaces via dedicated pins (TCK/TMS/TDO/TDI/SWDIO/SWCLK). Renesas E2 Emulator and E2 Lite tools provide full flash programming, real-time trace, and breakpoint debugging capabilities for the R7F124FPJ4AFB-C#BA0.
Is the R7F124FPJ4AFB-C#BA0 qualified for automotive applications?
The R7F124FPJ4AFB-C#BA0 is rated for industrial temperature range (−40°C to +85°C) and classified as "Standard" grade per Renesas quality policy. It is not AEC-Q100 qualified and is not recommended for safety-critical automotive powertrain or chassis systems. However, it is widely used in non-safety automotive body electronics such as door modules and lighting controls where industrial-grade reliability suffices.
How is the REGC pin used on the R7F124FPJ4AFB-C#BA0?
The REGC pin on the R7F124FPJ4AFB-C#BA0 connects to a 1.0 μF ceramic capacitor (X7R, ±10%, 6.3 V rating) placed as close as possible to the pin. This capacitor stabilizes the internal voltage regulator that powers the analog circuitry-including the ADC, DAC, and bandgap reference-ensuring consistent performance across supply voltage and temperature variations.
R7F124FPJ4AFB-C#BA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-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:
- 86
- 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 31x12b SAR; D/A 1x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F124FPJ4AFB-C#BA0 FAQ
1.How can I place an order for R7F124FPJ4AFB-C#BA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F124FPJ4AFB-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 R7F124FPJ4AFB-C#BA0 reliable?
The price and inventory of R7F124FPJ4AFB-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 R7F124FPJ4AFB-C#BA0 is usually 5 days.
3.What payment methods are accepted for R7F124FPJ4AFB-C#BA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F124FPJ4AFB-C#BA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F124FPJ4AFB-C#BA0?
R7F124FPJ4AFB-C#BA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F124FPJ4AFB-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 R7F124FPJ4AFB-C#BA0?
For technical support, including R7F124FPJ4AFB-C#BA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F124FPJ4AFB-C#BA0 requirements.
6.How does Aetrix verify that R7F124FPJ4AFB-C#BA0 is sourced from the original manufacturer or authorized distributors?
All R7F124FPJ4AFB-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 R7F124FPJ4AFB-C#BA0 meets industry standards.
7.What is the process for return or replacement of R7F124FPJ4AFB-C#BA0?
All R7F124FPJ4AFB-C#BA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F124FPJ4AFB-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 R7F124FPJ4AFB-C#BA0 part is unused and in its original packaging.
Return procedure for R7F124FPJ4AFB-C#BA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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