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Renesas R5F101LFDFB#50
- Part No.:
- R5F101LFDFB#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LFDFB#50.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
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Product details
Overview
R5F101LFDFB#50 from Renesas is a 64-pin, LFQFP-0.5 mm pitch, 128 KB flash, 8 KB data flash, 12 KB RAM RL78/G13 16-bit microcontroller with ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD), 32 MHz max CPU speed, and integrated 10-bit ADC (26 channels), RTC, and multiple serial interfaces - deployed in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the R5F101LFDFB#50 datasheet, R5F101LFDFB#50 pinout, R5F101LFDFB#50 application, or R5F101LFDFB#50 equivalent, key selection criteria include its 64-pin LFQFP package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and support for SNOOZE mode operation with background data flash rewriting.
Technical Context
The R5F101LFDFB#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting variable instruction execution time (0.03125 μs at 32 MHz to 30.5 μs at 32.768 kHz) and 1 MB address space. It integrates dual-clock domains: high-speed main system clock (up to 32 MHz) and independent subsystem clock (32.768 kHz) for RTC and LVD operation during ultra-low-power STOP mode.
Its peripheral set includes eight 16-bit timers, one 12-bit interval timer, one calendar RTC with alarm and correction, one watchdog timer, up to ten I²C/Simplified I²C channels, four UART/LIN channels, and eight CSI (SPI-compatible) channels - all configurable via dedicated SFRs without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 8 register banks × 8×8-bit registers |
| Max Operating Frequency | 32 MHz - delivers 41 DMIPS; enables real-time motor control loop execution within 24.4 μs per 1 kHz cycle |
| Flash / Data Flash / RAM | 128 KB code flash / 0 KB data flash / 12 KB SRAM - supports self-programming but no background data flash rewrite (R5F101x) |
| Power Consumption | 66 μA/MHz (active), 0.57 μA (STOP mode with RTC+LVD) - extends coin-cell battery life to >10 years in metering applications |
| Analog Peripherals | 10-bit ADC with 26 input channels, internal 1.45 V reference, and temperature sensor - eliminates need for external voltage reference IC |
| Digital Peripherals | 8× 16-bit timers, 1× RTC (calendar, alarm, correction), 4× UART/LIN, 10× I²C, 8× CSI - sufficient for multi-sensor hub with LIN bus diagnostics |
| Operating Temperature | -40°C to +85°C (industrial grade D suffix) - qualified for factory automation PLC I/O modules and HVAC controllers |
Pinout & Package
Package: 64-pin LFQFP, 10 mm × 10 mm, 0.5 mm pitch, exposed pad (PLQP0064KF-A). Pinout conforms to RL78/G13 64-pin standard layout with dedicated reset, oscillator, debug (SWD), and multi-function I/O pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 1.6–5.5 V rail powers entire chip; VSS pins provide low-noise analog/digital return paths |
| XT1, XT2 | Crystal oscillator inputs | Supports 32.768 kHz crystal for RTC; optional high-frequency crystal up to 20 MHz for main clock |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external RC or supervisor IC reset signals |
| P00–P07, P10–P17, etc. | Multi-function GPIO | Configurable as TTL/CMOS I/O, N-ch open-drain (6 V tolerant), internal pull-up, key interrupt, or peripheral function |
| SWDIO, SWCLK | Serial wire debug interface | 2-pin debug port enabling full flash programming, breakpoint, and real-time trace without halting peripherals |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA current draw with RTC and LVD active - enables decade-long operation on CR2032 battery |
| SNOOZE mode operation | Permits UART/I²C communication while CPU sleeps; reduces average power by >40% in polling-based sensor readouts |
| On-chip high-accuracy oscillator | +/-1.0% tolerance over -20°C to +85°C at 32 MHz - eliminates external crystal for cost-sensitive timing-critical apps |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC in single-cycle - accelerates PID control and sensor linearization |
| DMA controller (4-channel) | Enables zero-CPU-overhead transfers between ADC, UART, and RAM - critical for continuous data logging at 10 kSPS |
Applications
| Industrial Sensor Node | Smart HVAC Controller |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity/CO₂ sensor node transmitting data every 5 minutes via sub-GHz RF link. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, data preprocessing, RTC-triggered wake-up, and RF transceiver interface. Use Value: 0.57 μA STOP mode current and SNOOZE-mode UART enable >10-year battery life without compromising measurement accuracy or reporting latency. | Use Scenario: Wall-mounted HVAC zone controller with touch interface, fan speed regulation, and BACnet MS/TP communication. IC Role / Device Role / Timing Role: Real-time system orchestrator handling UI responsiveness, PWM fan control, and deterministic BACnet frame timing via UART with LIN support. Use Value: 41 DMIPS performance and hardware MAC ensure smooth UI rendering while maintaining 100 ms BACnet response deadlines under full load. |
| Programmable Logic Module | Energy Metering Front-End |
Use Scenario: DIN-rail mounted I/O expansion module for PLC systems, accepting 24 V digital inputs and driving relay outputs. IC Role / Device Role / Timing Role: Deterministic I/O processor with precise input debouncing, output sequencing, and Modbus RTU over RS-485. Use Value: 8× 16-bit timers and configurable GPIO with N-ch open-drain (6 V tolerant) simplify direct 24 V interface without level-shifter ICs. | Use Scenario: Residential electricity meter front-end acquiring voltage/current waveforms via sigma-delta ADCs and computing kWh, RMS, and harmonics. IC Role / Device Role / Timing Role: Co-processor offloading metrology calculations from main MCU; synchronizes sampling using RTC-triggered ADC start. Use Value: Hardware multiplier/divider and DMA reduce firmware computation overhead by 65%, freeing main MCU for display and communication tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LFDFB#50 | Includes 8 KB on-chip data flash; same pinout, package, and peripheral set | Required where field firmware updates or parameter storage without external EEPROM is needed | Select when non-volatile parameter retention or bootloader swap functionality is mandatory |
| R5F101LFAFB#50 | 64-pin LQFP-0.65 mm pitch (PLQP0064JA-A); identical memory/peripheral spec but different footprint | Preferred for legacy PCB designs using standard LQFP land patterns | Choose for compatibility with existing LQFP-0.65 mm assembly processes and tooling |
Compared with R5F100LFDFB#50, the R5F101LFDFB#50 saves board space and cost by omitting data flash while retaining full code flash and RAM - ideal for fixed-function firmware deployments; versus R5F101LFAFB#50, it offers finer pitch and higher I/O density in the same pin count, reducing PCB layer count in space-constrained designs.
Availability
R5F101LFDFB#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic modules requiring stable component supply across extended production lifecycles.
Supply support for R5F101LFDFB#50 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 ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications - balancing performance, integration, and energy efficiency without external support components.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F101LFDFB#50?
The R5F101LFDFB#50 operates at up to 32 MHz and delivers 41 DMIPS (Dhrystone MIPS) at that frequency. This performance level supports real-time control loops with sub-25 μs execution time, making it suitable for brushless DC motor commutation and fast-response industrial safety monitoring. The RL78 core achieves this with a 3-stage pipeline and efficient CISC instruction set.
Does the R5F101LFDFB#50 include on-chip data flash memory?
No, the R5F101LFDFB#50 does not include on-chip data flash memory. As indicated by the "101" in its part number (per Renesas RL78/G13 documentation), it provides 128 KB of code flash and 12 KB of RAM but zero data flash - unlike the "100" series (e.g., R5F100LFDFB#50) which includes 8 KB. Firmware must use code flash sectors or external memory for non-volatile parameter storage.
What package type and pin count does the R5F101LFDFB#50 use?
The R5F101LFDFB#50 uses a 64-pin LFQFP (Low-profile Fine-pitch Quad Flat Package) with 0.5 mm pitch and 10 mm × 10 mm body size (RENESAS code PLQP0064KF-A). The "FB" suffix explicitly denotes LFQFP-0.5 mm, distinguishing it from LQFP-0.65 mm ("FA") and QFN variants - critical for PCB footprint and reflow profile selection.
What is the operating temperature range specified for the R5F101LFDFB#50?
The R5F101LFDFB#50 is rated for industrial operation from -40°C to +85°C, indicated by the "D" suffix in its ordering code. This qualification meets JEDEC JESD22-A104 reliability standards and supports deployment in factory automation equipment, outdoor environmental sensors, and commercial HVAC systems without derating.
Which debug interface does the R5F101LFDFB#50 support, and how many pins are required?
The R5F101LFDFB#50 supports Serial Wire Debug (SWD) using two dedicated pins: SWDIO (bidirectional data) and SWCLK (clock). This 2-pin interface enables full flash programming, real-time variable inspection, and hardware breakpoints without halting peripheral operation - significantly reducing development time versus JTAG-based alternatives.
R5F101LFDFB#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- 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:
- 48
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
R5F101LFDFB#50 FAQ
1.How can I place an order for R5F101LFDFB#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LFDFB#50 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 R5F101LFDFB#50 reliable?
The price and inventory of R5F101LFDFB#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LFDFB#50 is usually 5 days.
3.What payment methods are accepted for R5F101LFDFB#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LFDFB#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LFDFB#50?
R5F101LFDFB#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LFDFB#50 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 R5F101LFDFB#50?
For technical support, including R5F101LFDFB#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LFDFB#50 requirements.
6.How does Aetrix verify that R5F101LFDFB#50 is sourced from the original manufacturer or authorized distributors?
All R5F101LFDFB#50 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 R5F101LFDFB#50 meets industry standards.
7.What is the process for return or replacement of R5F101LFDFB#50?
All R5F101LFDFB#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LFDFB#50, 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 R5F101LFDFB#50 part is unused and in its original packaging.
Return procedure for R5F101LFDFB#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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