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Renesas R5F101LCAFA#X0
- Part No.:
- R5F101LCAFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LCAFA#X0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,703
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Product details
Overview
R5F101LCAFA#X0 from Renesas is a 64-pin LQFP-0.65mm ultra-low-power 16-bit RL78/G13 microcontroller with 64 KB flash memory, 4 KB data flash, 4 KB RAM, and integrated real-time clock (RTC), 10-bit ADC (26 channels), UART/SPI/I²C interfaces, and 16-bit timers - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101LCAFA#X0 datasheet, R5F101LCAFA#X0 pinout, R5F101LCAFA#X0 application, or R5F101LCAFA#X0 equivalent, key selection criteria include its 1.6–5.5 V single-supply operation, 0.57 μA STOP-mode current with RTC+LVD active, 41 DMIPS @ 32 MHz, and support for BGO data flash rewriting during program execution.
Technical Context
The R5F101LCAFA#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates on-chip power-on-reset (POR), voltage detector (LVD) with 14 selectable levels, and DMA controller with 2 channels supporting 2-clock transfers between SFR and RAM.
Its peripheral set includes a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, 16-bit timer array (up to 16 channels), real-time clock with calendar/alarm/correction functions, and serial interfaces: up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels - all configurable under the same low-power operating envelope.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline and 1 MB address space |
| Max Operating Frequency | 32 MHz delivering 41 DMIPS - enables real-time control loop execution at ≤24.4 ns per instruction cycle |
| Flash Memory | 64 KB code flash with 1 KB block size and flash shield window security function |
| Data Flash | 4 KB with background operation (BGO): allows code execution while rewriting - critical for field firmware updates |
| RAM Size | 4 KB on-chip RAM - sufficient for RTOS stacks, communication buffers, and sensor data aggregation |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA with RTC+LVD active), SNOOZE - extends battery life in intermittent-sensing applications |
| Analog Peripherals | 10-bit ADC with 26 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Serial Interfaces | Up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels - supports multi-protocol sensor hub designs |
Pinout & Package
Package: 64-pin LQFP, 12 × 12 mm, 0.65 mm pitch (JEDEC MS-026AC), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 1.6–5.5 V supply rail; dual VSS pins reduce noise coupling in mixed-signal operation |
| P00–P07 | General-purpose I/O port | Configurable as N-ch open-drain (6 V tolerant), TTL input, or pull-up; supports 1.8/2.5/3.0 V interface |
| P10–P17 | Multi-function port | Includes SCK00/SCL00, SI00/RxD0, SO00/TxD0, and TOOLRxD - enables debug + SPI/I²C sharing on same pins |
| P20–P27 | Analog input port | ANI0–ANI7 with AVREFP/AVREFM references - supports simultaneous sampling across 8 channels |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to POR and LVD outputs for fail-safe initialization |
| CLKP/CLKM | Crystal oscillator inputs | Supports 32.768 kHz crystal for RTC accuracy; also accepts external clock source |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC and LVD active - enables >10-year battery life in periodic wake-up sensor nodes |
| Background data flash rewrite | Execute application code from flash while updating 4 KB data flash - eliminates interrupt latency during OTA updates |
| On-chip debug interface | Fully integrated with E1/E20 emulators via single-pin TOOLRxD - reduces debug footprint and BOM cost |
| Real-time clock with calendar | 99-year calendar, alarm, and auto-correction - eliminates need for external RTC IC in time-stamped logging systems |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations - accelerates PID control and sensor linearization |
| Key interrupt function | Dedicated hardware detects key press/release on any port pin without CPU polling - lowers active power in HMI applications |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Tamper-resistant electricity/water/gas meter with time-of-use billing and remote reporting. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, RTC-based tariff switching, secure flash storage of consumption logs, and UART/LIN communication to concentrator. Use Value: 0.57 μA STOP mode with RTC ensures accurate timekeeping during mains outage; 4 KB data flash stores 30+ days of encrypted usage history without external EEPROM. |
Use Scenario: Wireless vibration/temperature/pressure node in predictive maintenance systems. IC Role / Device Role / Timing Role: Signal acquisition controller performing 10-bit ADC sampling, FFT preprocessing, RTC-synchronized wake-up, and UART-to-LoRaWAN gateway handoff. Use Value: BGO data flash enables over-the-air firmware patching without interrupting sensor sampling; 66 μA/MHz HALT mode minimizes energy per measurement cycle. |
| Home Appliance Control | Building Automation Panel |
|
Use Scenario: MCU in washing machine control board managing motor drive timing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Real-time sequencer coordinating PWM motor control, analog front-end conditioning, key interrupt scanning, and buzzer output generation. Use Value: On-chip buzzer controller and key interrupt eliminate external logic; 16-bit timer array provides precise phase-shifted PWM for BLDC commutation. |
Use Scenario: Standalone HVAC zone controller with temperature/humidity sensing and damper actuation. IC Role / Device Role / Timing Role: Central coordinator reading I²C sensors, driving relay outputs via GPIO, logging events to data flash, and communicating via UART to BACnet gateway. Use Value: 10-bit ADC with internal reference ensures stable readings across 1.6–5.5 V supply range; 14-level LVD prevents brown-out resets during line fluctuations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LCAFA#X0 | Includes 8 KB data flash and 12 KB RAM; otherwise identical pinout, peripherals, and package | Suitable where larger non-volatile parameter storage or deeper RTOS task stacks are required | Select when firmware requires >4 KB persistent configuration storage or complex multitasking |
| RL78/G14 R5F104LEAFA#X0 | Enhanced RL78/G14 core with 128 KB flash, 12 KB RAM, 12-bit ADC, and CAN 2.0B interface | Targeted at CAN-connected building controllers or automotive body electronics requiring bus diagnostics | Choose only if CAN physical layer integration and higher memory bandwidth are mandatory |
Compared with R5F101LCAFA#X0, the R5F100LCAFA#X0 offers greater data retention headroom at no layout change, while the RL78/G14 variant adds CAN but increases cost and power - making R5F101LCAFA#X0 optimal for cost-sensitive, battery-operated, non-CAN edge nodes.
Availability
R5F101LCAFA#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation systems requiring stable component supply across extended product lifecycles.
Supply support for R5F101LCAFA#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 industrial, automotive, and IoT markets.
The RL78/G13 family targets cost-optimized, ultra-low-power general-purpose embedded control - balancing performance, energy efficiency, and peripheral richness for battery- and line-powered edge devices.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating of the R5F101LCAFA#X0?
The R5F101LCAFA#X0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This benchmark reflects its RL78 CPU core's 3-stage pipeline efficiency and enables deterministic execution of real-time control algorithms, such as motor commutation or sensor fusion, within strict timing budgets.
Does the R5F101LCAFA#X0 support background data flash rewriting while executing code from main flash?
Yes, the R5F101LCAFA#X0 supports Background Operation (BGO) for its 4 KB data flash memory. This allows the CPU to execute instructions from program flash while simultaneously erasing or programming data flash sectors - essential for seamless firmware updates and runtime parameter logging without service interruption.
What low-power modes are available on the R5F101LCAFA#X0, and what is the lowest achievable current draw?
The R5F101LCAFA#X0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD enabled, it draws just 0.57 μA - verified across –40°C to +85°C ambient - making it ideal for decade-long deployments in battery-powered environmental monitors and utility meters.
How many analog input channels does the R5F101LCAFA#X0 support, and what is the ADC resolution and reference voltage?
The R5F101LCAFA#X0 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It uses an internal 1.45 V reference voltage (selectable only in HS mode) and supports external reference inputs, enabling high-accuracy sensor measurements across its full 1.6–5.5 V supply range.
Is the R5F101LCAFA#X0 pin-compatible with other RL78/G13 variants in the same package?
Yes, the R5F101LCAFA#X0 shares identical 64-pin LQFP-0.65mm mechanical and electrical pinout with all RL78/G13 members in the PLQP0064JA-A package - including R5F100LCAFA#X0 and R5F101LDAFA#X0 - enabling drop-in replacement for memory or feature scaling without PCB redesign.
R5F101LCAFA#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:
- 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#X0 FAQ
1.How can I place an order for R5F101LCAFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LCAFA#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 R5F101LCAFA#X0 reliable?
The price and inventory of R5F101LCAFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LCAFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LCAFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LCAFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LCAFA#X0?
R5F101LCAFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LCAFA#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 R5F101LCAFA#X0?
For technical support, including R5F101LCAFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LCAFA#X0 requirements.
6.How does Aetrix verify that R5F101LCAFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LCAFA#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 R5F101LCAFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LCAFA#X0?
All R5F101LCAFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LCAFA#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 R5F101LCAFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LCAFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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