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Renesas R5F101LCAFA#50
- Part No.:
- R5F101LCAFA#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LCAFA#50.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
R5F101LCAFA#50 from Renesas is a 64-pin LQFP-0.65mm, 16 KB flash, no data flash, industrial-grade (−40°C to +85°C) RL78/G13 16-bit MCU with 66 μA/MHz active current, 4 KB RAM, and integrated 10-bit ADC (26 channels), RTC, and UART/I²C/CSI interfaces - deployed in smart metering and industrial sensor nodes.
For engineers reviewing the R5F101LCAFA#50 datasheet, R5F101LCAFA#50 pinout, R5F101LCAFA#50 application, or R5F101LCAFA#50 equivalent, key selection criteria include its zero-data-flash configuration for cost-sensitive firmware-immutable designs, 64-pin LQFP package compatibility with legacy industrial PCB footprints, and verified 32 MHz operation with ±1.0% on-chip oscillator accuracy across full temperature range.
Technical Context
The R5F101LCAFA#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz HS mode) to 30.5 μs (32.768 kHz subclock mode). It integrates dedicated low-power modes including HALT, STOP, and SNOOZE, enabling sub-μA retention with RTC + LVD active.
Its peripheral set includes eight 16-bit timers, one 12-bit interval timer, one calendar RTC with alarm/correction, one watchdog timer, and three serial interface types (CSI, UART/LIN, I²C) - all configurable via register-based control without external clock dependencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response in resource-constrained embedded systems. |
| Flash Memory | 16 KB code flash (1 KB block size); supports self-programming with boot swap and flash shield window security. |
| RAM | 4 KB on-chip RAM; sufficient for RTOS stacks, sensor fusion buffers, and LIN protocol message handling. |
| Supply Voltage | 1.6 V to 5.5 V single supply; allows direct interfacing with 3.3 V and 5 V peripherals without level shifters. |
| ADC | 10-bit resolution, 26-channel analog input with internal 1.45 V reference; supports simultaneous monitoring of multiple sensors in HVAC controllers. |
| Operating Temp | −40°C to +85°C (Industrial grade D); validated for deployment in factory automation PLC modules and motor drive feedback circuits. |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA), SNOOZE; enables battery-powered operation >5 years in wireless sensor transmitters. |
Pinout & Package
64-pin LQFP package (12 × 12 mm, 0.65 mm pitch), JEDEC standard PLQP0064JA-A footprint, compatible with automated SMT placement and reflow profiles per IPC-7351B.
| 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 mixed-signal noise isolation in motor control applications. |
| P00–P07 | Port 0 general-purpose I/O | Configurable as N-ch open drain (6 V tolerant), TTL input, or pull-up; enables direct connection to 1.8/2.5/3.3 V logic without external translators. |
| P10/P11 | SCK00/SI00/RxD0 | Shared SPI clock/data and UART receive; allows dual-role peripheral sharing to reduce pin count in space-constrained designs. |
| P20–P27 | ANI0–ANI7 | Analog input channels with AVREFP/AVREFM reference pins; supports ratiometric sensor measurements using internal 1.45 V reference. |
| XT1/XT2 | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC accuracy; optional high-speed crystal up to 20 MHz for timing-critical communication. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 66 μA/MHz active current and 0.57 μA STOP mode enable multi-year battery life in portable diagnostic tools. |
| On-chip high-accuracy oscillator | ±1.0% tolerance over −20°C to +85°C eliminates need for external crystal in cost-sensitive consumer appliances. |
| Integrated RTC with calendar | 99-year calendar, alarm, and clock correction function supports time-stamped logging in energy meters without external RTC IC. |
| Background data flash rewrite | BGO allows concurrent program execution during data flash updates - critical for field firmware patching in deployed industrial gateways. |
| Multi-protocol serial interfaces | CSI (SPI-compatible), UART/LIN, and I²C on shared pins reduce BOM count and PCB layer count in home appliance control boards. |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Real-time voltage/current measurement and tariff calculation in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing LCD display, and communicating via RS-485/M-Bus. Use Value: 10-bit ADC with 26 channels captures multiple phase inputs simultaneously; RTC provides accurate billing timestamps without external timekeeping. | Use Scenario: Wireless temperature/humidity/pressure sensing node with LoRaWAN backhaul in factory environments. IC Role / Device Role / Timing Role: Sensor aggregator, low-power scheduler, and packet formatter before RF transmission. Use Value: STOP mode current of 0.57 μA extends AA battery life beyond 7 years; UART/LIN supports legacy fieldbus diagnostics. |
| Home Appliance Control | Motor Drive Feedback Unit |
Use Scenario: Washing machine mainboard controlling water valves, pump, heater, and user interface. IC Role / Device Role / Timing Role: Central system controller coordinating PWM-driven actuators and interpreting touch panel inputs. Use Value: 64-pin LQFP provides ample GPIO for relay drivers and status LEDs; on-chip BCD correction simplifies digital display driver logic. | Use Scenario: Closed-loop position/speed feedback module for BLDC motor drives in HVAC compressors. IC Role / Device Role / Timing Role: Real-time encoder signal conditioner and fault monitor interfacing with main motor controller. Use Value: Eight 16-bit timers support precise quadrature decoding and PWM capture; 32 MHz operation ensures <1 μs interrupt latency for overcurrent protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LCAFA#50 | Includes 4 KB data flash; identical pinout, package, and peripheral set. | Required where field-upgradable calibration tables or event logs must be stored non-volatilely. | Select when persistent parameter storage is needed without external EEPROM. |
| RL78/G14 R5F104LEAGFB#50 | Higher 128 KB flash, 16 KB RAM, enhanced DMA; 64-pin LFQFP (0.5 mm pitch), not pin-compatible. | Targeted at complex HMI or multi-protocol gateway applications requiring larger code space. | Choose only if migrating to higher performance and accepting PCB redesign for finer-pitch footprint. |
Compared with R5F100LCAFA#50, the R5F101LCAFA#50 reduces BOM cost by eliminating data flash while retaining identical timing, power, and interface capabilities - making it optimal for fixed-function industrial controllers. The RL78/G14 alternative offers scalability but requires layout revision and firmware adaptation.
Availability
R5F101LCAFA#50 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and motor drive feedback units requiring stable component supply across extended product lifecycles.
Supply support for R5F101LCAFA#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 delivering 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 - emphasizing energy efficiency, integration density, and toolchain maturity for rapid development of industrial and consumer control systems.
FAQ
What is the flash memory configuration of the R5F101LCAFA#50?
The R5F101LCAFA#50 contains 16 KB of code flash memory and no data flash memory. This configuration is optimized for applications with fixed firmware that does not require runtime parameter storage. The flash supports self-programming with boot swap functionality, and block erase is prohibited for security. Its 1 KB block size enables fine-grained update granularity while maintaining robustness against accidental corruption.
Does the R5F101LCAFA#50 support real-time clock functionality?
Yes, the R5F101LCAFA#50 integrates a full-featured real-time clock (RTC) with calendar support for up to 99 years, alarm generation, and clock correction capability. It operates independently in STOP mode using the 32.768 kHz subsystem clock, enabling accurate timekeeping during ultra-low-power states. This eliminates the need for an external RTC IC in applications such as energy meters and data loggers where timestamp integrity is essential.
What package type and pin count does the R5F101LCAFA#50 use?
The R5F101LCAFA#50 uses a 64-pin LQFP package with 0.65 mm pitch (JEDEC standard PLQP0064JA-A). Its physical dimensions are 12 mm × 12 mm, and it is supplied in embossed tape (#50 suffix). This package is compatible with standard SMT assembly processes and provides sufficient I/O for medium-complexity industrial control applications without requiring high-density routing layers.
Can the R5F101LCAFA#50 operate across industrial temperature ranges?
Yes, the R5F101LCAFA#50 is rated for operation from −40°C to +85°C (Industrial grade D), as confirmed in the RL78/G13 datasheet. This rating applies to all electrical specifications including ADC accuracy, oscillator stability, and flash write endurance. It has been validated for use in factory automation equipment, motor drives, and outdoor metering enclosures where ambient thermal stress is present.
What serial communication interfaces are available on the R5F101LCAFA#50?
The R5F101LCAFA#50 supports three serial interface types: CSI (SPI-compatible), UART/LIN, and I²C/Simplified I²C. It includes up to 8 CSI channels, 4 UART channels (with LIN support), and 10 I²C channels - many shared across pins to maximize flexibility. These interfaces operate independently of external clocks and support standard baud rates up to 4 Mbps (CSI), 2 Mbps (UART), and 400 kHz (Fast-mode I²C).
R5F101LCAFA#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:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
R5F101LCAFA#50 FAQ
1.How can I place an order for R5F101LCAFA#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LCAFA#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 R5F101LCAFA#50 reliable?
The price and inventory of R5F101LCAFA#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LCAFA#50 is usually 5 days.
3.What payment methods are accepted for R5F101LCAFA#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LCAFA#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LCAFA#50?
R5F101LCAFA#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LCAFA#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 R5F101LCAFA#50?
For technical support, including R5F101LCAFA#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LCAFA#50 requirements.
6.How does Aetrix verify that R5F101LCAFA#50 is sourced from the original manufacturer or authorized distributors?
All R5F101LCAFA#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 R5F101LCAFA#50 meets industry standards.
7.What is the process for return or replacement of R5F101LCAFA#50?
All R5F101LCAFA#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LCAFA#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 R5F101LCAFA#50 part is unused and in its original packaging.
Return procedure for R5F101LCAFA#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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