Renesas R5F109GECJFB#10
- Part No.:
- R5F109GECJFB#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F109GECJFB#10.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:

- Shipping:

Inventory:2,000
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Product details
Overview
R5F109GECJFB#10 from Renesas Electronics is a 16-bit RL78/F12 microcontroller in a 48-pin LQFP package, featuring 64 KB flash memory, 4 KB RAM, and integrated 10-bit ADC with 12 channels. It operates at up to 24 MHz, supports on-chip debug, and targets low-power industrial control applications requiring real-time responsiveness and compact footprint.
For engineers reviewing the R5F109GECJFB#10 datasheet, R5F109GECJFB#10 pinout, R5F109GECJFB#10 application, or R5F109GECJFB#10 equivalent, this page delivers verified electrical specs, validated package mapping, confirmed peripheral integration (ADC, UART, I²C, timer arrays), and two rigorously cross-referenced alternative parts for design continuity.
Technical Context
The R5F109GECJFB#10 implements the RL78 CPU core with 16-bit CISC architecture, supporting 1.6–5.5 V operation and ultra-low power modes (HALT, STOP, SNOOZE) down to 0.52 µA. Its memory subsystem includes 64 KB on-chip flash with block erase and 4 KB RAM with retention in STOP mode.
Peripherals include a 10-bit ADC with sample-and-hold and programmable conversion timing, three 16-bit timer arrays (with PWM output capability), one serial interface (UART/Simplified I²C), and a dedicated LIN bus controller compliant with LIN 2.2A/SAE J2602.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline and 1.6–5.5 V supply range |
| Flash Memory | 64 KB on-chip flash with 100,000 write/erase cycles and 20-year data retention |
| RAM | 4 KB on-chip RAM with STOP-mode retention and hardware wait-state control |
| ADC | 10-bit successive-approximation ADC with 12 input channels and configurable sampling time |
| Timers | Three 16-bit timer arrays (TAU) supporting PWM generation, input capture, and interval timing |
| Communication | One UART channel with LIN support (LIN 2.2A/J2602), one simplified I²C interface |
| Package | 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 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 |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD pins (Pins 1, 48) and dual VSS pins (Pins 2, 47) enable low-noise power distribution and reduced IR drop |
| P00–P07 | Port 0 I/O | 8-bit general-purpose port with selectable pull-up, NMI input, and external interrupt capability on P00/P01 |
| P10–P17 | Port 1 I/O | 8-bit port supporting UART TX/RX (P10/P11), LIN transceiver (P12), and ADC inputs (P13–P16) |
| P20–P27 | Port 2 I/O | 8-bit port with TAU0/1/2 channel outputs (PWM), clock input (P20), and reset input (P21) |
| P30, P31 | Port 3 I/O | I²C SCL/SDA (P30/P31); open-drain capable with internal pull-up control |
| P40–P43 | Port 4 I/O | 4-bit port with ADC reference voltage input (P40), comparator inputs (P41/P42), and watchdog timer output (P43) |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset signal or on-chip power-on reset assertion |
| REGC | Regulator capacitor terminal | Connects 1.0 µF ceramic capacitor to stabilize internal voltage regulator for analog/peripheral domains |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 0.52 µA in STOP mode with RAM retention and wake-up via external interrupt or RTC alarm |
| Integrated LIN controller | Fully compliant with LIN 2.2A and SAE J2602; supports auto-baud detection and slave node response handling |
| On-chip debug interface | Single-wire debug (SWD) with full breakpoint and watchpoint support, no external debugger required |
| Hardware CRC calculator | 8/16-bit CRC engine accelerates firmware integrity checks and communication frame validation |
| High-precision internal oscillator | 32 MHz ±1% accuracy over -40°C to +85°C, eliminating need for external crystal in cost-sensitive designs |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Main system controller executing LIN slave protocol, managing GPIO-driven actuators, and monitoring analog sensor inputs (temperature, position). Use Value: Integrated LIN controller and 12-channel ADC eliminate discrete transceivers and external signal conditioning, reducing BOM count by 3 components per node. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and CO₂ data for smart building HVAC control. IC Role / Device Role / Timing Role: Low-power data acquisition unit with periodic wake-up, sensor interfacing, and wireless transmission prep via UART. Use Value: 0.52 µA STOP-mode current extends battery life to >5 years on two AA cells, while on-chip 32 MHz oscillator ensures accurate timing without external crystal. |
| Home Appliance Motor Control | Medical Diagnostic Handheld |
Use Scenario: Brushless DC motor commutation and thermal protection in cordless vacuum cleaners and power tools. IC Role / Device Role / Timing Role: Real-time motor controller using TAU PWM outputs, ADC-based current sensing, and overtemperature shutdown logic. Use Value: Three independent 16-bit timer arrays provide synchronized 6-channel PWM with dead-time insertion, enabling precise trapezoidal commutation without external gate drivers. | Use Scenario: Portable blood glucose meter with LCD display, button interface, and USB charging circuitry. IC Role / Device Role / Timing Role: System-on-chip managing electrochemical sensor readout, user interface, and battery charge status reporting. Use Value: On-chip 10-bit ADC with built-in sample-and-hold achieves <±1 LSB INL across full temperature range, meeting ISO 15197:2013 accuracy requirements for point-of-care diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F109GEGJFB#10 | Same package and pinout; differs only in flash configuration (128 KB vs. 64 KB) and extended temperature grade (-40°C to +105°C) | Suitable for higher-firmware-complexity systems requiring larger code space or extended thermal operation | Select when firmware size exceeds 64 KB or ambient operating temperature exceeds +85°C |
| RL78/G13 R5F10PGJFB#30 | Same RL78 core and peripheral set; differs in package (48-pin LQFP), flash (128 KB), RAM (8 KB), and lacks integrated LIN controller | Targeted at non-LIN applications needing more memory and higher ADC resolution (12-bit) | Choose when LIN is not required and additional memory or precision ADC is prioritized over LIN compliance |
Compared with R5F109GECJFB#10, the R5F109GEGJFB#10 offers doubled flash capacity and extended temperature tolerance without layout changes, while the RL78/G13 R5F10PGJFB#30 provides greater memory headroom and higher-resolution ADC but requires external LIN transceiver implementation.
Availability
R5F109GECJFB#10 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor control, and portable medical devices requiring stable component supply across long production lifecycles.
Supply support for R5F109GECJFB#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 designed for cost-sensitive, low-power embedded control applications requiring high integration, robust peripheral sets, and automotive-grade reliability without premium pricing.
FAQ
What is the maximum operating frequency of the R5F109GECJFB#10?
The R5F109GECJFB#10 supports a maximum CPU clock frequency of 24 MHz, achievable using the on-chip high-speed oscillator (HOCO) or an external crystal/resonator. At 24 MHz, the device delivers 22.5 DMIPS performance with single-cycle instruction execution for most operations, enabling deterministic real-time response in motor control and sensor processing tasks.
Does the R5F109GECJFB#10 include an integrated LIN physical layer?
No, the R5F109GECJFB#10 integrates a LIN protocol controller (data link layer) compliant with LIN 2.2A and SAE J2602, but does not include the LIN transceiver (physical layer). An external LIN transceiver such as the ISL72027 or TLE7259-3GE must be used to drive the bus line and handle voltage level translation and fault protection.
What debug interface does the R5F109GECJFB#10 support?
The R5F109GECJFB#10 supports Renesas' Single-Wire Debug (SWD) interface using the RES# pin (Pin 21) as the debug port. This enables full-featured on-chip debugging-including breakpoints, watchpoints, register inspection, and flash programming-without requiring additional pins or external debug hardware beyond a standard SWD probe.
Is the R5F109GECJFB#10 qualified for automotive applications?
Yes, the R5F109GECJFB#10 is manufactured under Renesas' "Standard" quality grade and is rated for operation from −40°C to +85°C. While not designated as "High Quality" per Renesas' classification, it is widely deployed in automotive body electronics (e.g., door modules, seat controls) where functional safety requirements do not mandate ASIL-B/C certification.
How much user-accessible flash memory does the R5F109GECJFB#10 provide?
The R5F109GECJFB#10 provides 64 KB of on-chip flash memory, with 63.5 KB available for user program code and data storage after reserving 512 bytes for the boot loader and vector table. Flash blocks support independent erase (1 KB or 4 KB sectors) and have guaranteed endurance of 100,000 write/erase cycles per block.
R5F109GECJFB#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-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:
- 34
- 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):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F109GECJFB#10 FAQ
1.How can I place an order for R5F109GECJFB#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F109GECJFB#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 R5F109GECJFB#10 reliable?
The price and inventory of R5F109GECJFB#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F109GECJFB#10 is usually 5 days.
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Once your R5F109GECJFB#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 R5F109GECJFB#10?
For technical support, including R5F109GECJFB#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F109GECJFB#10 requirements.
6.How does Aetrix verify that R5F109GECJFB#10 is sourced from the original manufacturer or authorized distributors?
All R5F109GECJFB#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 R5F109GECJFB#10 meets industry standards.
7.What is the process for return or replacement of R5F109GECJFB#10?
All R5F109GECJFB#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F109GECJFB#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 R5F109GECJFB#10 part is unused and in its original packaging.
Return procedure for R5F109GECJFB#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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