Renesas R5F109GCCJFB#10
- Part No.:
- R5F109GCCJFB#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F109GCCJFB#10.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
R5F109GCCJFB#10 from Renesas Electronics is a 16-bit RL78/F12 microcontroller in a 48-pin LQFP package, featuring 96 KB flash memory, 8 KB RAM, and integrated 12-bit ADC with 12 channels. It operates at up to 24 MHz, supports on-chip debug, and includes hardware real-time clock (RTC), UART, I²C, and SPI interfaces. It targets cost-sensitive industrial control and sensor interface applications requiring low power and high integration.
For engineers reviewing the R5F109GCCJFB#10 datasheet, R5F109GCCJFB#10 pinout, R5F109GCCJFB#10 application, or R5F109GCCJFB#10 equivalent, key selection criteria include flash endurance (100k write/erase cycles), operating voltage range (1.6–5.5 V), built-in voltage regulator (VDD = 1.8–5.5 V), and support for single-cycle multiplication/division - all critical for deterministic embedded firmware execution in battery-powered and mains-operated systems.
Technical Context
The R5F109GCCJFB#10 implements the RL78 CPU core with 3-stage pipeline, supporting 16-bit ALU operations and 8/16-bit data handling. It integrates a 12-bit successive-approximation ADC with sample-and-hold, programmable gain amplifier (PGA) input option, and hardware-triggered conversion via timer or external event.
Its peripheral set includes three 16-bit timers (with PWM output), one watchdog timer (WDT), one real-time clock (RTC) with calendar function, and a 10-bit D/A converter. The device uses Renesas' proprietary "Simplified Flash" technology enabling fast erase (≤10 ms per block) and low-power standby current (0.55 µA typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CPU with 3-stage pipeline and 16-bit ALU |
| Flash Memory | 96 KB program flash with 100,000 write/erase cycles and ≤10 ms block erase |
| RAM | 8 KB on-chip SRAM with retention capability during HALT mode |
| ADC | 12-bit SAR ADC with 12 input channels, ±1 LSB INL, and hardware trigger support |
| Operating Voltage | 1.6 V to 5.5 V - enables direct interface with 3.3 V and 5 V logic without level shifters |
| Max Clock Frequency | 24 MHz - delivers 22.5 DMIPS at 24 MHz, sufficient for real-time motor control loops |
| Low-Power Modes | HALT (0.55 µA), STOP (0.35 µA), and SNOOZE mode with wake-up on peripheral event |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| 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) reduce IR drop and improve noise immunity |
| P00–P07 | Port 0 I/O | 8-bit bi-directional port with NMI, INT, and comparator inputs; configurable pull-up/down |
| P10–P17 | Port 1 I/O | 8-bit bi-directional port supporting UART0 TX/RX, I²C SCL/SDA, and timer capture/compare |
| P20–P27 | Port 2 I/O | 8-bit bi-directional port with ADC input channels AN0–AN7 and DAC output |
| P40–P43 | Port 4 I/O | 4-bit port with RTC alarm output, reset input, and clock input options (XTAL/EXTAL) |
| RESET | Active-low reset input | Accepts external reset signal; internal power-on reset (POR) and low-voltage detection (LVD) also available |
| REGC | Regulator capacitor terminal | Connects 1.0 µF ceramic capacitor to stabilize internal voltage regulator output |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Fully integrated on-chip debug (OCD) with SWD interface - eliminates need for external emulator during development |
| Hardware RTC | Calendar-mode RTC with alarm interrupt and 32.768 kHz crystal support - enables time-stamped logging without external IC |
| Low-power operation | 0.35 µA STOP mode current with RTC running - extends battery life in portable sensors |
| Flash programming security | Flash lock bits and read-out protection prevent unauthorized firmware extraction or overwrite |
| Peripheral independence | Independent clock gating per peripheral - allows selective shutdown of unused modules to minimize dynamic power |
Applications
| Industrial Sensor Node | Smart Thermostat Control |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor node collecting data every 30 seconds and transmitting via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-based scheduling, low-power state transitions, and serial communication. Use Value: 0.35 µA STOP mode with RTC active enables >5-year battery life using CR2032; integrated UART/I²C avoids external level-shifting components. | Use Scenario: Residential HVAC controller with display, keypad, relay drivers, and ambient sensor fusion. IC Role / Device Role / Timing Role: Central MCU executing PID loop, driving 4-digit LED display via multiplexing, and managing user input debounce and safety interlocks. Use Value: 96 KB flash accommodates full UI stack + control algorithms; hardware PWM outputs directly drive LED segments and fan speed control. |
| Programmable Logic Controller (PLC) I/O Module | Energy Meter Front-End |
Use Scenario: DIN-rail mounted digital I/O expansion module with 8-channel opto-isolated inputs and 8-channel transistor outputs. IC Role / Device Role / Timing Role: Real-time I/O manager with deterministic response to input changes, isolated bus communication, and watchdog supervision. Use Value: 24 MHz core ensures sub-100 µs input-to-output latency; built-in WDT and LVD guarantee fail-safe behavior under brownout conditions. | Use Scenario: AC energy meter front-end acquiring voltage/current waveforms via shunt/CT and computing RMS, THD, and kWh. IC Role / Device Role / Timing Role: Signal acquisition controller synchronizing 12-bit ADC sampling to zero-crossing detection and performing fixed-point calculations. Use Value: Hardware-triggered ADC with timer match events enables precise 32-sample-per-cycle acquisition; 8 KB RAM holds full waveform buffers without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F109GCDJFB#10 | Same package and pinout; reduced flash (64 KB) and RAM (6 KB); no DAC | Suitable for simpler control tasks without analog output or large firmware footprint | Select when firmware size < 64 KB and DAC not required - lower BOM cost |
| R5F109LECFB#30 | 64-pin LQFP; 128 KB flash, 12 KB RAM, additional UART/I²C channels, and enhanced timer features | Required for designs needing >12 ADC channels, multiple serial interfaces, or larger code/data space | Choose for scalability path - same RL78/F12 architecture and toolchain compatibility |
Compared with R5F109GCDJFB#10, the R5F109GCCJFB#10 provides 32 KB more flash and 2 KB more RAM plus a 10-bit DAC - enabling richer firmware features and analog output capability. Against R5F109LECFB#30, it trades pin count and peripheral count for smaller footprint and lower cost while retaining identical core performance and low-power behavior.
Availability
R5F109GCCJFB#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat control, and PLC I/O modules requiring stable component supply across multi-year production cycles.
Supply support for R5F109GCCJFB#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 industrial, automotive, and IoT markets.
The RL78/F12 product line is designed for ultra-low-power, cost-optimized embedded control applications - emphasizing integrated peripherals, robust flash reliability, and simplified development for resource-constrained systems.
FAQ
What is the maximum operating frequency of the R5F109GCCJFB#10?
The R5F109GCCJFB#10 operates at a maximum CPU clock frequency of 24 MHz. This is achieved using the on-chip high-speed oscillator (HOCO) or an external crystal/resonator. At 24 MHz, the RL78 core delivers 22.5 DMIPS, supporting real-time control loops and moderate data processing without external acceleration. The R5F109GCCJFB#10 maintains timing accuracy across its full 1.6–5.5 V supply range and −40°C to +85°C ambient temperature.
Does the R5F109GCCJFB#10 include a hardware real-time clock (RTC)?
Yes, the R5F109GCCJFB#10 integrates a hardware RTC with calendar function (year/month/day/hour/minute/second), alarm interrupt, and periodic interrupt capability. It supports external 32.768 kHz crystal connection via dedicated XT1/XT2 pins and retains timekeeping in STOP mode with only 0.35 µA current draw. The R5F109GCCJFB#10 RTC does not require software emulation or external components for accurate time stamping.
What ADC resolution and channel count does the R5F109GCCJFB#10 support?
The R5F109GCCJFB#10 features a 12-bit successive-approximation ADC with 12 input channels (AN0–AN11), ±1 LSB integral nonlinearity, and hardware-triggered conversion via timer match or external event. It supports differential input mode on select channels and includes sample-and-hold circuitry. The R5F109GCCJFB#10 ADC operates across the full 1.6–5.5 V supply range and achieves conversion times as low as 1.6 µs per sample at 24 MHz.
Is the R5F109GCCJFB#10 pin-compatible with other RL78/F12 devices in 48-pin LQFP?
Yes, the R5F109GCCJFB#10 shares identical pinout and package (48-pin LQFP) with other RL78/F12 48-pin variants including R5F109GCDJFB#10 and R5F109GCDFB#30. All share the same VDD/VSS, RESET, REGC, XTAL/EXTAL, and port pin assignments. However, peripheral enablement (e.g., DAC presence, ADC channel mapping) and memory configuration differ - firmware must be validated per specific variant even with identical PCB layout.
What debug interface does the R5F109GCCJFB#10 support?
The R5F109GCCJFB#10 supports Renesas' on-chip debug (OCD) interface via Serial Wire Debug (SWD) using dedicated pins (RES# and P00/SWDIO, P01/SWCLK). No external JTAG adapter is needed - standard E2 studio and CS+ IDEs provide full flash programming, breakpoint, and real-time variable monitoring. The R5F109GCCJFB#10 debug interface remains functional across all low-power modes except deep STOP, enabling seamless development and field firmware updates.
R5F109GCCJFB#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:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 2K 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:
R5F109GCCJFB#10 FAQ
1.How can I place an order for R5F109GCCJFB#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F109GCCJFB#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 R5F109GCCJFB#10 reliable?
The price and inventory of R5F109GCCJFB#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F109GCCJFB#10 is usually 5 days.
3.What payment methods are accepted for R5F109GCCJFB#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F109GCCJFB#10 transactions.
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4.How is shipping managed for R5F109GCCJFB#10?
R5F109GCCJFB#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F109GCCJFB#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 R5F109GCCJFB#10?
For technical support, including R5F109GCCJFB#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F109GCCJFB#10 requirements.
6.How does Aetrix verify that R5F109GCCJFB#10 is sourced from the original manufacturer or authorized distributors?
All R5F109GCCJFB#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 R5F109GCCJFB#10 meets industry standards.
7.What is the process for return or replacement of R5F109GCCJFB#10?
All R5F109GCCJFB#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F109GCCJFB#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 R5F109GCCJFB#10 part is unused and in its original packaging.
Return procedure for R5F109GCCJFB#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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