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Renesas R5F109LECKFB#10
- Part No.:
- R5F109LECKFB#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F109LECKFB#10.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,003
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Product details
Overview
R5F109LECKFB#10 from Renesas Electronics is a 16-bit RL78/F12 microcontroller in a 64-pin LQFP package, featuring 512 KB flash memory, 32 KB RAM, and integrated 12-bit ADC, 16-bit timer arrays, and LIN/UART/SPI/I²C interfaces. It operates at up to 32 MHz, supports 1.6–5.5 V supply, and targets automotive body control modules requiring ASIL-B capable firmware execution.
For engineers reviewing the R5F109LECKFB#10 datasheet, R5F109LECKFB#10 pinout, R5F109LECKFB#10 application, or R5F109LECKFB#10 equivalent, key selection criteria include its 64-pin LQFP-0.5mm pitch package, on-chip debug interface (FDCAN-capable), 512 KB flash with ECC, and support for functional safety development per ISO 26262 ASIL-B requirements.
Technical Context
The R5F109LECKFB#10 implements the RL78 CPU core with 3-stage pipeline, 16-bit ALU, and 20-bit address space. It integrates a 12-bit ADC with 24 channels, 16-bit multi-function timer (MTU) with complementary PWM output, and a dedicated LIN bus controller compliant with LIN 2.2A and SAE J2602.
Its power management includes low-power modes (HALT, STOP, DEEP STOP) with wake-up via external interrupt or peripheral event, and voltage monitoring with independent reset generation. The device uses Renesas' proprietary SuperFlash® technology enabling 100K write/erase cycles and data retention >20 years.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CPU, 32 MHz max operation - enables deterministic real-time control with <100 ns instruction cycle at full speed |
| Flash Memory | 512 KB with ECC and 100K write/erase cycles - supports robust firmware updates and safety-critical code storage |
| RAM | 32 KB on-chip SRAM - sufficient for real-time task stacks, CAN/LIN message buffers, and safety monitor variables |
| ADC | 12-bit resolution, 24 input channels, 1.0 µs conversion time - suitable for precise sensor signal acquisition in motor control and battery monitoring |
| Timers | 16-bit MTU with 6 channels, complementary PWM, dead-time insertion - enables three-phase inverter gate drive without external logic |
| Communication | LIN 2.2A + UART + SPI + I²C - provides native vehicle network connectivity plus flexibility for sensor and actuator interfacing |
| Supply Range | 1.6 V to 5.5 V - allows direct connection to 3.3 V or 5 V automotive domains and compatibility with wide-input DC-DC converters |
Pinout & Package
Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P07 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or alternate functions including UART0 TX/RX, SPI0 clock/data, and ADC input CH0–CH7 |
| P10–P17 | Port 1 bidirectional I/O | Supports MTU0/1 capture/compare, LIN0 transceiver I/O, and external interrupt inputs INT0–INT7 |
| P20–P27 | Port 2 bidirectional I/O | Includes ADC input CH8–CH15, I²C0 SCL/SDA, and system clock input (CLKP) |
| P30, P31 | Port 3 bidirectional I/O | Dedicated to UART1 TX/RX and oscillator connections (XT1/XT2) for main system clock |
| VDD, VSS | Power supply pins | Multiple VDD/VSS pairs ensure stable core and I/O domain operation under high-noise automotive conditions |
| RESET | Active-low reset input | Accepts external reset signal; internal power-on reset (POR) and voltage detector (LVD) provide fail-safe initialization |
| REGC | Regulator capacitor terminal | Connects 1.0 µF ceramic capacitor to stabilize on-chip voltage regulator output for analog peripherals |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety Support | Built-in hardware safety mechanisms: ECC on flash and RAM, parity on SFRs, clock frequency monitor, and independent watchdog timer - enables ASIL-B compliance per ISO 26262 |
| Low-Power Operation | DEEP STOP mode consumes 0.23 µA typical with RTC running - extends battery life in always-on vehicle modules |
| On-Chip Debug | Fine-grained trace and real-time debugging via single-wire interface (SWI) - eliminates need for external debug probes during ECU validation |
| Peripheral Independence | Independent clock domains for ADC, timers, and communication modules - prevents timing conflicts during mixed-mode operation |
| Robust I/O | ±8 kV HBM ESD rating, 5.5 V tolerant inputs on selected pins - withstands automotive load-dump and ESD events without external protection |
Applications
| Body Control Module (BCM) | Smart Junction Box (SJB) |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in modern vehicles. IC Role / Device Role / Timing Role: Main application MCU executing LIN slave nodes, managing PWM dimming for LED lighting, and sampling hall-effect sensors for position feedback. Use Value: Integrated LIN controller and 24-channel ADC eliminate external transceivers and signal-conditioning ICs, reducing BOM count by ≥3 components. | Use Scenario: Power distribution and diagnostics hub managing fused outputs to chassis subsystems (e.g., HVAC, wipers, seat controls). IC Role / Device Role / Timing Role: High-reliability power switch controller with current-sense ADC, thermal monitoring, and fault logging via LIN master interface. Use Value: On-chip 12-bit ADC with hardware averaging and built-in overcurrent detection logic enable accurate load monitoring without external op-amps or comparators. |
| Seat Position Controller | Roof Module (Sunroof/Blind) |
Use Scenario: Motorized adjustment of driver/passenger seat position using dual DC motors with end-stop detection. IC Role / Device Role / Timing Role: Real-time motion controller with quadrature encoder input, complementary PWM generation, and stall detection via current sensing. Use Value: MTU's dead-time configurable PWM and integrated current-sense ADC channel allow closed-loop motor control with <5 µs response latency. | Use Scenario: Sunroof or power blind actuation with obstacle detection, soft-stop, and anti-pinch functionality. IC Role / Device Role / Timing Role: Safety-aware motion manager using ADC-based torque sensing, LIN command parsing, and dual PWM outputs for bidirectional motor drive. Use Value: Hardware-accelerated LIN protocol engine and on-chip voltage monitor reduce software overhead, enabling sub-10 ms reaction time to pinch events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F109LDCKFB#10 | Same package and pinout; 384 KB flash, 24 KB RAM - reduced memory footprint | Suitable for cost-sensitive BCM variants with smaller firmware image and fewer diagnostic features | Select when application firmware size remains under 350 KB and RAM usage stays below 20 KB |
| SPC560B50L5 | 32-bit Power Architecture core, 512 KB flash, 48 KB RAM, integrated CAN FD - higher performance but larger footprint | Targeted at gateway or domain controller roles requiring multiple CAN FD buses and complex routing logic | Choose only if CAN FD, higher MIPS, or ASIL-D certification path is required - not drop-in compatible |
Compared with R5F109LDCKFB#10, the R5F109LECKFB#10 offers 128 KB more flash and 8 KB more RAM for enhanced diagnostics and OTA update capability; versus SPC560B50L5, it delivers lower power, smaller footprint, and simpler toolchain while meeting ASIL-B without CAN FD.
Availability
R5F109LECKFB#10 is available at Aetrix Electronics and suitable for automotive body electronics, smart junction boxes, and seat control systems requiring stable component supply across extended production lifecycles.
Supply support for R5F109LECKFB#10 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 IoT markets.
The RL78/F12 product line is engineered for cost-effective, low-power automotive body electronics with integrated functional safety features and LIN network support - targeting ASIL-B compliant ECUs without external safety co-processors.
FAQ
What is the maximum operating frequency of the R5F109LECKFB#10?
The R5F109LECKFB#10 operates at a maximum CPU frequency of 32 MHz using its on-chip high-speed oscillator or external crystal. This frequency is fully supported across the entire 1.6–5.5 V supply range and ambient temperature range of −40°C to +105°C, enabling deterministic real-time execution for automotive control loops.
Does the R5F109LECKFB#10 support functional safety certification?
Yes, the R5F109LECKFB#10 includes hardware safety features required for ISO 26262 ASIL-B compliance, including ECC on flash and RAM, parity protection on SFRs, clock frequency monitor, and independent watchdog timer. Renesas provides safety manuals and FMEDA reports specifically for the R5F109LECKFB#10 to support safety case development.
What debug interface does the R5F109LECKFB#10 use?
The R5F109LECKFB#10 uses a single-wire debug (SWD)-compatible interface called FINE (Fast IN-Circuit Emulator), accessible via the SWCLK and SWDIO pins. This interface supports full real-time debugging, flash programming, and trace capabilities without requiring additional pins beyond the standard 2-pin SWD connection.
Is the R5F109LECKFB#10 pin-compatible with other RL78/F12 devices?
Yes, the R5F109LECKFB#10 shares identical pinout and package (64-pin LQFP) with all other R5F109Lx variants (e.g., R5F109LA, R5F109LB). Firmware and hardware designs can be reused across this family, with differentiation limited to flash/RAM size and peripheral enablement - verified in Renesas' RL78/F12 Hardware User's Manual Rev.1.20.
What LIN protocol versions does the R5F109LECKFB#10 support?
The R5F109LECKFB#10 integrates a dedicated LIN controller supporting LIN 2.2A and SAE J2602 standards. It handles automatic header detection, checksum calculation (classic and enhanced), and slave node response timing - all in hardware - reducing CPU load to <2% during LIN frame processing.
R5F109LECKFB#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/F12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F109LECKFB#10 FAQ
1.How can I place an order for R5F109LECKFB#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F109LECKFB#10 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 R5F109LECKFB#10 reliable?
The price and inventory of R5F109LECKFB#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F109LECKFB#10 is usually 5 days.
3.What payment methods are accepted for R5F109LECKFB#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F109LECKFB#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F109LECKFB#10?
R5F109LECKFB#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F109LECKFB#10 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 R5F109LECKFB#10?
For technical support, including R5F109LECKFB#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F109LECKFB#10 requirements.
6.How does Aetrix verify that R5F109LECKFB#10 is sourced from the original manufacturer or authorized distributors?
All R5F109LECKFB#10 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 R5F109LECKFB#10 meets industry standards.
7.What is the process for return or replacement of R5F109LECKFB#10?
All R5F109LECKFB#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F109LECKFB#10, 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 R5F109LECKFB#10 part is unused and in its original packaging.
Return procedure for R5F109LECKFB#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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