Renesas R5F100GCAFB#X0
- Part No.:
- R5F100GCAFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F100GCAFB#X0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
R5F100GCAFB#X0 from Renesas is a 48-pin LFQFP, 128 KB flash, 8 KB data flash, 12 KB RAM RL78/G13 16-bit microcontroller operating from 1.6–5.5 V, delivering 41 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), used in battery-powered industrial sensors and smart metering interfaces.
For engineers reviewing the R5F100GCAFB#X0 datasheet, R5F100GCAFB#X0 pinout, R5F100GCAFB#X0 application, or R5F100GCAFB#X0 equivalent, key selection criteria include its industrial-grade temperature range (−40°C to +105°C), integrated RTC with calendar/alarm, 26-channel 10-bit ADC, and support for LIN-bus UART communication in compact 7×7 mm LFQFP-48 packaging.
Technical Context
The R5F100GCAFB#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling configurable instruction execution time from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates on-chip debug, self-programming flash with boot swap, and background operation for data flash rewriting while executing code.
Its peripheral set includes up to 16 channels of 16-bit timer, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN channels, 2–8 CSI (SPI-compatible) channels, and a 12-bit interval timer plus real-time clock with calendar and clock correction-optimized for deterministic timing control in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 41 DMIPS @ 32 MHz |
| Flash Memory | 128 KB code flash (1 KB block size), with security lock and self-programming |
| Data Flash | 8 KB data flash with background operation (BGO) and 1M rewrite cycles |
| RAM | 12 KB on-chip RAM, including dedicated areas for flash library use (start address FF300H) |
| Supply Voltage | 1.6 V to 5.5 V single supply, supporting direct connection to Li-ion, alkaline, or 3.3/5 V rails |
| Operating Temperature | −40°C to +105°C (industrial G-grade), qualified for extended thermal environments |
| Power Modes | HALT (0.23 μA), STOP (0.57 μA w/ RTC+LVD), SNOOZE (low-latency wake-up) |
Pinout & Package
Package: 48-pin LFQFP (7 × 7 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports independent 1.8/2.5/3.0 V interface |
| P00–P07 | General-purpose I/O port | Configurable as N-ch open drain (6 V tolerant), TTL input, or pull-up; supports key interrupt and clock output |
| P10/P11 | SPI0 clock/data (SCK00/SI00) | Shared with UART0 (RxD0/TxD0) and LIN-bus physical layer; enables dual-protocol serial interface |
| P20–P27 | Analog input (ANI0–ANI7) | 8-channel 10-bit ADC inputs with internal 1.45 V reference and temperature sensor (HS mode only) |
| RTC_IN/RTC_OUT | Real-time clock oscillator | Connects to 32.768 kHz crystal; enables calendar, alarm, and automatic clock correction functions |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD with 14-level voltage detection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP modes | Enables multi-year battery life in wireless sensor nodes via sub-μA retention with RTC + LVD active |
| On-chip data flash with BGO | Allows firmware updates or parameter logging without halting application execution |
| Integrated LIN-bus UART | Eliminates need for external transceiver in automotive body electronics and HVAC control modules |
| 10-bit ADC with internal reference | Provides calibrated analog sensing across full VDD range (1.6–5.5 V) without external reference IC |
| Real-time clock with calendar | Supports timestamped data logging, scheduled wake-up, and time-of-day operations for smart meters |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Bidirectional energy measurement with tamper detection and time-of-use billing. IC Role / Device Role / Timing Role: Main controller managing metrology IC interface, RTC-based tariff switching, and secure flash storage of consumption logs. Use Value: 128 KB flash stores multiple firmware versions and encryption keys; 8 KB data flash retains 10+ years of hourly usage data with BGO. | Use Scenario: Wireless temperature/humidity node with local display and periodic BLE upload. IC Role / Device Role / Timing Role: System-on-chip handling ADC sampling, LCD driving, low-power sleep scheduling, and UART-to-BLE bridge logic. Use Value: 0.57 μA STOP mode extends CR2032 battery life beyond 5 years; integrated RTC enables precise wake intervals without external components. |
| Automotive Body Control | Home Appliance MCU |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting via LIN network. IC Role / Device Role / Timing Role: LIN master node with UART/LIN hardware support, PWM for motor control, and GPIO for switch monitoring. Use Value: Native LIN-bus UART reduces BOM cost and PCB area; −40°C to +105°C rating ensures under-hood reliability. | Use Scenario: Washing machine main board managing motor drive, water level sensing, and user interface. IC Role / Device Role / Timing Role: Real-time coordinator of 16-bit timer-driven motor phase control, 26-channel ADC for current/voltage/temperature feedback, and buzzer output. Use Value: 16-channel 16-bit timers enable precise 3-phase BLDC commutation; on-chip BCD correction simplifies display driver integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101GCAFB#X0 | No data flash (0 KB); same core, peripherals, and package | Not suitable where field-upgradable parameters or secure logging required | Select when firmware is static and data storage handled externally |
| RL78/G14 R5F104GCAFB#X0 | Enhanced 256 KB flash, 32 KB RAM, additional DMA channels and USB interface | Better suited for USB-connected appliances or OTA update-capable devices | Choose for higher memory headroom or USB host/device functionality |
Compared with R5F100GCAFB#X0, R5F101GCAFB#X0 removes data flash to reduce cost in fixed-function roles, while R5F104GCAFB#X0 adds USB and doubles RAM-making it appropriate for next-generation designs requiring connectivity or larger runtime buffers.
Availability
R5F100GCAFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F100GCAFB#X0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G13 product line delivers true low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and thermally demanding applications-emphasizing energy efficiency, integrated peripherals, and robust industrial qualification.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F100GCAFB#X0?
The R5F100GCAFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator (±1.0% accuracy), delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs in this mode, and it supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation. This dual-speed capability allows the R5F100GCAFB#X0 to balance computational throughput with energy efficiency across diverse operational phases.
Does the R5F100GCAFB#X0 support in-system programming and secure firmware updates?
Yes, the R5F100GCAFB#X0 supports full in-system programming via its on-chip debug interface and includes self-programming capabilities for both code and data flash. It features flash shield window protection, block erase prohibition, and boot swap functionality-enabling secure over-the-air or field firmware updates while preventing unauthorized access or corruption of critical bootloader sections during R5F100GCAFB#X0 operation.
What analog features are integrated into the R5F100GCAFB#X0 for sensor interfacing?
The R5F100GCAFB#X0 integrates a 10-bit successive-approximation ADC with up to 26 input channels, selectable internal reference voltage (1.45 V), and an on-chip temperature sensor. These features operate across the full 1.6–5.5 V supply range and are accessible in HS (high-speed main) mode. The ADC supports scan mode, group conversion, and hardware-triggered sampling-making the R5F100GCAFB#X0 well-suited for precision analog front-end tasks in environmental monitoring and motor control applications.
How does the R5F100GCAFB#X0 manage power in battery-powered applications?
The R5F100GCAFB#X0 achieves industry-leading low-power operation with 66 μA/MHz active current, 0.57 μA in STOP mode (RTC + LVD active), and 0.23 μA in HALT mode. It supports three ultra-low-power states-HALT, STOP, and SNOOZE-with flexible wake-up sources including GPIO, RTC alarm, and peripheral interrupts. This enables multi-year operation on coin cells in applications such as wireless sensors, where the R5F100GCAFB#X0's power management directly determines system lifetime.
Is the R5F100GCAFB#X0 pin-compatible with other RL78/G13 variants in the same package?
Yes, all RL78/G13 devices in the 48-pin LFQFP (FB) package-including R5F100GCAFB#X0, R5F100GDAFB#X0, and R5F101GCAFB#X0-share identical pinouts and electrical characteristics. This allows drop-in replacement across memory variants (e.g., 128 KB vs. 96 KB flash) and data flash options (8 KB vs. 0 KB), provided software configuration matches the target device's memory map and feature set. Pin compatibility simplifies design reuse and migration paths within the R5F100GCAFB#X0 family.
R5F100GCAFB#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
R5F100GCAFB#X0 FAQ
1.How can I place an order for R5F100GCAFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F100GCAFB#X0 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 R5F100GCAFB#X0 reliable?
The price and inventory of R5F100GCAFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100GCAFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F100GCAFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F100GCAFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F100GCAFB#X0?
R5F100GCAFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F100GCAFB#X0 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 R5F100GCAFB#X0?
For technical support, including R5F100GCAFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100GCAFB#X0 requirements.
6.How does Aetrix verify that R5F100GCAFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F100GCAFB#X0 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 R5F100GCAFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F100GCAFB#X0?
All R5F100GCAFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100GCAFB#X0, 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 R5F100GCAFB#X0 part is unused and in its original packaging.
Return procedure for R5F100GCAFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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