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Renesas R5F101LGAFA#X0
- Part No.:
- R5F101LGAFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LGAFA#X0.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,419
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Product details
Overview
R5F101LGAFA#X0 from Renesas is a 64-pin LQFP-0.65mm, 128 KB flash, 8 KB RAM, no data flash RL78/G13 16-bit microcontroller operating from 1.6 V to 5.5 V, delivering 41 DMIPS at 32 MHz with ultra-low-power modes (0.57 μA RTC+LVD), used in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101LGAFA#X0 datasheet, R5F101LGAFA#X0 pinout, R5F101LGAFA#X0 application, or R5F101LGAFA#X0 equivalent, key selection criteria include its 64-pin LQFP package, absence of on-chip data flash, -40°C to +85°C industrial-grade temperature range (A-grade), integrated 10-bit ADC (26 channels), real-time clock with calendar, and hardware UART/SPI/I²C interfaces for sensor hub and HMI control designs.
Technical Context
The R5F101LGAFA#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode), and features an address space of 1 MB with four register banks of eight 8-bit registers each.
It integrates a 16-bit timer array (16 channels), 12-bit interval timer, real-time clock with alarm/calendar functions, watchdog timer, 8/10-bit SAR ADC with internal 1.45 V reference and temperature sensor, and serial interfaces including up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with low gate count and minimal power overhead. |
| Max Operating Frequency | 32 MHz; delivers 41 DMIPS performance suitable for sensor fusion and protocol stack execution in constrained-edge devices. |
| Flash Memory | 128 KB code flash; sufficient for dual-bank boot loader, firmware updates, and application logic in industrial IoT nodes. |
| RAM Size | 8 KB on-chip RAM; supports real-time buffering, stack depth for RTOS, and local variable storage without external memory. |
| ADC Resolution & Channels | 10-bit SAR ADC with 26 input channels; enables simultaneous monitoring of multiple analog sensors (voltage, current, temp) in single-chip metering. |
| Supply Voltage Range | 1.6 V to 5.5 V; allows direct operation from coin cell, Li-ion, or 3.3/5 V rails - eliminates need for external regulators in portable designs. |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA w/ RTC+LVD); extends battery life to years in wake-on-event sensor applications. |
Pinout & Package
Package: 64-pin LQFP (12 × 12 mm, 0.65-mm pitch), RoHS-compliant, industrial-grade plastic body (PLQP0064JA-A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | SPI Clock / I²C Clock | Shared function pin enabling flexible interface selection; supports master/slave SPI or I²C communication without pin remapping. |
| P11/SI00/RxD0/TOOLRxD/SDA00 | SPI Input / UART RX / I²C Data | Multi-function input pin allowing debug (TOOLRxD), sensor comms (SPI/I²C), and host interface (UART) on one terminal. |
| P20/ANI0/AVREFP | Analog Input 0 / ADC Reference Positive | Dual-role pin simplifies precision measurement: serves as first ADC channel or sets AVREFP for ratiometric sensor readings. |
| P21/ANI1/AVREFM | Analog Input 1 / ADC Reference Negative | Enables differential ADC measurements or defines AVREFM ground reference; critical for noise-immune analog front-end design. |
| P30/INTP0/TOOLTXD | External Interrupt 0 / Debug TX | Hardware interrupt trigger for event-driven wake-up (e.g., button press) and dedicated debug output path independent of main UART. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip High-Accuracy Oscillator | ±1.0% accuracy over 1.8–5.5 V and -20 to +85°C; eliminates external crystal for cost-sensitive timing-critical applications like energy meters. |
| Self-Programming Flash | Supports in-application firmware updates via boot swap and flash shield window; enables secure field upgrades without debugger. |
| Background Operation (BGO) | Not available - R5F101x series lacks data flash; this omission reduces die size and cost for fixed-function embedded control. |
| Real-Time Clock (RTC) | Full calendar (99-year), alarm, and clock correction; provides time-stamped logging and scheduled wake-up in battery-backed systems. |
| N-ch Open Drain I/O | Up to 25 pins support 6 V tolerant N-ch open drain; enables direct interfacing with 1.8/2.5/3.3 V peripherals and level-shifting-free I²C bus pull-ups. |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Residential electricity meter with pulse counting, voltage/current sampling, and RS-485 communication. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing ADC sampling sequence, and handling Modbus RTU over UART. Use Value: 10-bit ADC with 26 channels captures multi-phase analog inputs simultaneously; 128 KB flash hosts dual-firmware images for fail-safe updates. |
Use Scenario: Wireless vibration sensor node powered by AA batteries, transmitting FFT data via BLE gateway. IC Role / Device Role / Timing Role: Low-power acquisition engine sampling accelerometer via DMA, compressing data, and waking radio only on threshold events. Use Value: STOP mode draws just 0.57 μA with RTC active - enabling >5-year battery life; 32 MHz CPU handles real-time FFT with 41 DMIPS headroom. |
| Home Appliance Control Panel | Building Automation Controller |
|
Use Scenario: Microwave oven control board with touch keys, display driver, and safety interlock monitoring. IC Role / Device Role / Timing Role: System manager coordinating user input (key interrupt), display refresh (buzzer output controller), and thermal shutdown logic. Use Value: On-chip key interrupt function detects matrix keypad presses without polling; N-ch open drain I/O drives LED segments directly at 5 V. |
Use Scenario: HVAC zone controller integrating temperature/humidity sensing, valve actuation, and BACnet MS/TP communication. IC Role / Device Role / Timing Role: Protocol-aware edge processor running BACnet stack, reading analog environmental sensors, and driving relay outputs. Use Value: Integrated UART with LIN support enables robust MS/TP physical layer; 16-bit timer channels precisely manage PWM fan speed and valve timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101LGAFB#X0 | Same core, memory, and peripherals but in 64-pin LFQFP (0.5-mm pitch); smaller footprint, tighter layout constraints. | Preferred where PCB space is limited and fine-pitch assembly capability exists; not drop-in compatible due to different land pattern. | Select when miniaturization outweighs rework risk; requires PCB redesign and stencil update. |
| R5F100LGAFA#X0 | Identical package and pinout, but includes 8 KB data flash and background operation (BGO); larger die, higher cost. | Required for applications needing EEPROM-like parameter storage with concurrent code execution (e.g., calibration data logging). | Choose only if data flash functionality is mandatory; otherwise R5F101LGAFA#X0 offers better cost/performance ratio for fixed-parameter systems. |
Compared with R5F101LGAFB#X0, the R5F101LGAFA#X0 uses a more manufacturable 0.65-mm pitch LQFP, easing assembly yield; versus R5F100LGAFA#X0, it removes redundant data flash to reduce cost and power leakage - ideal for sealed, un-updatable industrial controllers.
Availability
R5F101LGAFA#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control panels, and building automation controllers requiring stable component supply across long product lifecycles.
Supply support for R5F101LGAFA#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 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - designed to replace legacy 8-bit MCUs while delivering 16-bit performance and advanced peripheral integration in compact packages.
FAQ
Does R5F101LGAFA#X0 include on-chip data flash memory?
No, R5F101LGAFA#X0 does not include data flash memory. The "101" in the part number explicitly denotes absence of data flash per Renesas' RL78/G13 naming convention. It provides 128 KB code flash and 8 KB RAM only - making it suitable for fixed-parameter firmware deployments where runtime parameter storage is handled externally or omitted entirely.
What is the operating temperature range for R5F101LGAFA#X0?
R5F101LGAFA#X0 is rated for industrial operation from -40°C to +85°C. The "A" suffix in the part number indicates the consumer/industrial grade (not "G", which would denote -40°C to +105°C). This range is validated per Renesas specification R01DS0131EJ0380 and applies across all electrical parameters in the datasheet.
Which development tools support R5F101LGAFA#X0?
R5F101LGAFA#X0 is fully supported by Renesas E2 studio IDE, CS+ (formerly CubeSuite+), and the Renesas Flash Programmer. Hardware debugging requires the E2 emulator Lite or full E2 emulator, both compatible with the 64-pin LQFP package via standard 10-pin JTAG/SWD connector.
Can R5F101LGAFA#X0 operate from a 1.8 V supply?
Yes, R5F101LGAFA#X0 operates across 1.6 V to 5.5 V, including 1.8 V. At 1.8 V, maximum frequency is reduced to 16 MHz per datasheet limits, but all peripherals - including ADC, timers, and serial interfaces - remain functional. This enables direct use with LiFePO₄ or regulated 1.8 V rails without level shifting.
Is there a pin-compatible alternative with data flash for R5F101LGAFA#X0?
Yes, R5F100LGAFA#X0 is pin-compatible and shares identical 64-pin LQFP-0.65mm packaging and pinout with R5F101LGAFA#X0, but includes 8 KB data flash and background operation. No PCB changes are required for migration - only firmware adaptation to leverage data flash features such as wear-leveling and concurrent execution.
R5F101LGAFA#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 48
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101LGAFA#X0 FAQ
1.How can I place an order for R5F101LGAFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LGAFA#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 R5F101LGAFA#X0 reliable?
The price and inventory of R5F101LGAFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LGAFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LGAFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LGAFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LGAFA#X0?
R5F101LGAFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LGAFA#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 R5F101LGAFA#X0?
For technical support, including R5F101LGAFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LGAFA#X0 requirements.
6.How does Aetrix verify that R5F101LGAFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LGAFA#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 R5F101LGAFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LGAFA#X0?
All R5F101LGAFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LGAFA#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 R5F101LGAFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LGAFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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