Renesas R5F109GDCJFB#10
- Part No.:
- R5F109GDCJFB#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F109GDCJFB#10.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 48LQFP
- Quantity:
- Payment:

- Shipping:

Inventory:1,980
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Product details
Overview
R5F109GDCJFB#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 includes LIN bus interface - used in automotive body control modules requiring functional safety-aware firmware execution.
For engineers reviewing the R5F109GDCJFB#10 datasheet, R5F109GDCJFB#10 pinout, R5F109GDCJFB#10 application, or R5F109GDCJFB#10 equivalent, key selection criteria include its 48-pin LQFP-048 footprint, 64 KB flash with EEPROM emulation, LIN v2.2 compliance, and AEC-Q100 Grade 2 qualification for under-hood automotive use.
Technical Context
The R5F109GDCJFB#10 implements the RL78 CPU core with 3-stage pipeline and low-power SNOOZE mode, supporting voltage operation from 2.7 V to 5.5 V. It integrates a 15-channel 10-bit ADC with sample-and-hold, 8-bit D/A converter, and 16-bit timer arrays (TMR00–TMR03) with complementary PWM output capability.
Its peripheral set includes a LIN controller compliant with ISO 17987-4:2016, 3x serial array units (SAUs) configurable as UART/I²C/CSI, and hardware real-time clock (RTC) with calendar function. The device uses Renesas' proprietary "Simplicity Studio"-compatible debug interface via single-wire SWD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CPU with 3-stage pipeline and 24 MHz max frequency |
| Flash Memory | 64 KB with 100,000 write/erase cycles and EEPROM emulation support |
| RAM | 4 KB SRAM with retention during STOP mode |
| ADC | 10-bit resolution, 12 input channels, 1.1 μs conversion time, internal reference |
| LIN Interface | Hardware LIN controller compliant with ISO 17987-4:2016 (LIN v2.2) |
| Operating Voltage | 2.7 V to 5.5 V - enables direct connection to 3.3 V or 5 V automotive subsystems |
| Package | 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), JEDEC MS-026AC compliant |
Pinout & Package
48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3). Pinout validated per RL78/F12 User's Manual Rev.1.20, Section 1.3.4 and 2.1.4.
| 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, INT0–INT3 |
| P10–P17 | Port 1 bidirectional I/O | Supports LIN_TX/LIN_RX, TMR00–TMR03 inputs, and ADC trigger signals |
| P20–P27 | Port 2 bidirectional I/O | Includes SAU0/SAU1/SAU2 serial interface pins and external interrupt sources |
| P40–P43 | Port 4 bidirectional I/O | ADC input channels AN0–AN3 and comparator inputs |
| VDD, VSS | Power supply terminals | Dual VDD/VSS pairs ensure stable core and I/O domain operation across temperature |
| RESET | Active-low reset input | Accepts external reset signal or internal power-on reset (POR)/voltage detector (LVD) assertion |
| REGC | Regulator capacitor terminal | Connects 1.0 μF ceramic capacitor to stabilize on-chip DC-DC regulator output |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation modes | Halt, Stop, and Snooze modes with wake-up latency < 4 μs from STOP - reduces average current to < 0.5 μA in battery-backed RTC applications |
| On-chip debug interface | Single-wire SWD (Serial Wire Debug) with flash programming and real-time trace - eliminates need for external JTAG adapter |
| Functional safety support | Built-in self-test (BIST) for flash and RAM, parity/ECC on critical registers, and lock-step timer monitoring - supports ASIL-B decomposition |
| Hardware LIN controller | Dedicated LIN peripheral with automatic header detection, checksum calculation, and error recovery - offloads CPU and ensures deterministic timing |
| EEPROM emulation | 64-byte user-configurable data flash area with wear-leveling algorithm - enables 100K-cycle nonvolatile storage without external EEPROM |
Applications
| Automotive Door Module | Smart HVAC Actuator |
|---|---|
Use Scenario: Centralized control of window lift, mirror fold, and door lock actuation in entry-level vehicles. IC Role / Device Role / Timing Role: Main system MCU executing LIN slave node firmware, managing motor drivers, and polling switch inputs. Use Value: Integrated LIN v2.2 controller and 12-channel ADC enable direct sensor integration and deterministic communication without external transceivers. | Use Scenario: Position feedback and closed-loop control of blend air flaps in vehicle climate systems. IC Role / Device Role / Timing Role: Real-time motor position controller using PWM outputs and analog feedback from potentiometers. Use Value: On-chip 10-bit ADC with sample-and-hold and 16-bit complementary PWM reduce BOM count and improve thermal stability over discrete solutions. |
| LED Headlamp Driver | Body Control Unit (BCU) Subnode |
Use Scenario: Adaptive lighting control with dynamic beam shaping and thermal derating logic. IC Role / Device Role / Timing Role: Secondary MCU coordinating LED current regulation and thermal monitoring via I²C-connected sensors. Use Value: Dual-voltage operation (2.7–5.5 V) allows direct 5 V rail use; built-in 8-bit DAC provides precise bias voltage for current-sense amplifiers. | Use Scenario: Distributed control node managing interior lighting, seat position memory, and ambient sensor aggregation. IC Role / Device Role / Timing Role: LIN slave node collecting CAN-to-LIN gateway data and executing local PWM dimming algorithms. Use Value: 64 KB flash supports dual-bank firmware updates; hardware RTC with calendar enables timed event scheduling without external components. |
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 |
|---|---|---|---|
| R5F109GDKFB#10 | Same die, 64-pin LQFP package with additional ADC channels and I/O pins | Requires PCB redesign due to larger footprint and different pin mapping | Select when higher I/O count and extended peripheral routing flexibility are needed |
| SPC560B50L5 | 32-bit Power Architecture core, 512 KB flash, ISO 26262 ASIL-B certified | Targeted at higher-integration BCU main controllers, not drop-in replacement | Choose for new designs requiring full ASIL-B compliance and CAN FD support |
Compared with R5F109GDKFB#10 and SPC560B50L5, the R5F109GDCJFB#10 delivers optimal cost-performance balance for LIN-based subnodes where 48-pin I/O density and AEC-Q100 Grade 2 sufficiency are primary constraints.
Availability
R5F109GDCJFB#10 is available at Aetrix Electronics and suitable for automotive body electronics, smart actuator control, and LIN-based sensor fusion modules requiring stable component supply across production lifecycles.
Supply support for R5F109GDCJFB#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 targets cost-sensitive, safety-aware automotive body electronics applications, emphasizing low-power operation, LIN integration, and AEC-Q100 qualification without sacrificing code efficiency or debug capability.
FAQ
What is the maximum operating frequency of the R5F109GDCJFB#10?
The R5F109GDCJFB#10 operates at a maximum CPU frequency of 24 MHz, achievable using the on-chip high-speed oscillator (HOCO) or an external crystal/resonator. This frequency is maintained across the full operating voltage range (2.7 V to 5.5 V) and temperature range (−40 °C to +105 °C), as specified in the RL78/F12 Electrical Characteristics table.
Does the R5F109GDCJFB#10 support hardware LIN communication?
Yes, the R5F109GDCJFB#10 includes a dedicated hardware LIN controller compliant with ISO 17987-4:2016 (LIN v2.2). It handles header detection, checksum generation/verification, and automatic resynchronization - enabling deterministic, low-CPU-overhead LIN slave node implementation without external transceivers.
What package type and pin count does the R5F109GDCJFB#10 use?
The R5F109GDCJFB#10 uses a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch), designated as PLQP0048KB-A. This footprint matches JEDEC standard MS-026AC and is verified in the RL78/F12 User's Manual Rev.1.20, Section 1.3.4 and Figure 1.12.
Is the R5F109GDCJFB#10 qualified for automotive applications?
Yes, the R5F109GDCJFB#10 is AEC-Q100 qualified to Grade 2 (−40 °C to +105 °C), and is designated for automotive body electronics applications such as door modules, HVAC actuators, and LED lighting controls. Its qualification covers HTOL, TC, ESD, and other stress tests defined in the AEC-Q100 standard.
How much flash and RAM memory does the R5F109GDCJFB#10 provide?
The R5F109GDCJFB#10 integrates 64 KB of on-chip flash memory (with 100,000 write/erase cycles and EEPROM emulation support) and 4 KB of SRAM. The SRAM retains data during STOP mode, and the flash supports in-application programming (IAP) via the on-chip debug interface.
R5F109GDCJFB#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RL78/F12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 3K 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:
R5F109GDCJFB#10 FAQ
1.How can I place an order for R5F109GDCJFB#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F109GDCJFB#10 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of R5F109GDCJFB#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F109GDCJFB#10 is usually 5 days.
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6.How does Aetrix verify that R5F109GDCJFB#10 is sourced from the original manufacturer or authorized distributors?
All R5F109GDCJFB#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 R5F109GDCJFB#10 meets industry standards.
7.What is the process for return or replacement of R5F109GDCJFB#10?
All R5F109GDCJFB#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F109GDCJFB#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 R5F109GDCJFB#10 part is unused and in its original packaging.
Return procedure for R5F109GDCJFB#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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