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Renesas R5F101LKAFA#X0
- Part No.:
- R5F101LKAFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LKAFA#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
R5F101LKAFA#X0 from Renesas is a 64-pin LQFP-0.65mm, 384 KB flash, 8 KB data flash, 24 KB RAM RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD), 32 MHz max CPU speed, and integrated 10-bit ADC (26 channels), RTC, UART, I²C, and SPI interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101LKAFA#X0 datasheet, R5F101LKAFA#X0 pinout, R5F101LKAFA#X0 application, or R5F101LKAFA#X0 equivalent, key selection criteria include its 64-pin LQFP package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and support for SNOOZE mode wake-up via serial interface or timer events.
Technical Context
The R5F101LKAFA#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed oscillator) to 30.5 μs (32.768 kHz subsystem clock). It integrates dual DMA channels, 16×16-bit multiply/accumulate unit, and background data flash rewriting (BGO) capability despite lacking on-chip data flash memory.
Its peripheral set includes up to 16× 16-bit timers, 1× real-time clock with calendar/alarm/correction, 1× watchdog timer, 3× I²C/Simplified I²C channels, 2× UART/LIN interfaces, and 2× CSI (SPI-compatible) channels - all operating across 1.6–5.5 V supply with on-chip POR and 14-level LVD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and variable instruction timing |
| Max Clock Speed | 32 MHz - enables 41 DMIPS performance for real-time control loops |
| Flash Memory | 384 KB code flash - supports boot swap and flash shield window for secure firmware updates |
| RAM | 24 KB on-chip RAM - sufficient for RTOS stacks, communication buffers, and sensor fusion algorithms |
| ADC | 10-bit resolution, 26-channel SAR ADC with internal 1.45 V reference and temperature sensor |
| Supply Voltage | 1.6 V to 5.5 V - allows direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V peripherals without level shifters |
| Low-Power Modes | HALT, STOP, and SNOOZE modes - SNOOZE enables UART/I²C wake-up while CPU remains halted |
Pinout & Package
Package: 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10 | SCK00 / SCL00 | Serial clock output for CSI0 or I²C0 master mode - shared function simplifies PCB routing |
| P11 | SI00 / RxD0 / TOOLRxD / SDA00 | Multi-function pin supporting SPI input, UART receive, debug RX, and I²C data - enables flexible interface selection |
| P12 | SO00 / TxD0 / TOOLTxD / SCL00 | Multi-function pin supporting SPI output, UART transmit, debug TX, and I²C clock - reduces need for external multiplexers |
| P13 | SS00 / RTS0 / SDA00 | Chip select for CSI0 or flow control for UART0 - configurable per peripheral mode |
| P20 | ANI0 / AVREFP | Analog input channel 0 and positive ADC reference voltage - supports ratiometric sensor measurements |
| P21 | ANI1 / AVREFM | Analog input channel 1 and negative ADC reference voltage - enables differential analog sensing |
| P30 | INTP0 / PPG0 | External interrupt input or programmable pulse generator output - supports event-triggered wake-up or timing signal generation |
| VDD | Power Supply | Main digital supply (1.6–5.5 V) - powers CPU, RAM, and most peripherals |
| VSS | GND | Digital ground reference - must be low-impedance and separated from analog ground if precision ADC used |
| AVDD | Analog Power | Separate analog supply pin - improves ADC SNR by isolating noisy digital switching |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | 0.57 μA RTC+LVD retention enables multi-year battery life in wireless sensor nodes |
| On-chip high-accuracy oscillator | +/-1.0% tolerance (1.8–5.5 V, -20 to +85°C) eliminates need for external crystal in cost-sensitive designs |
| Background data flash rewrite (BGO) | Allows concurrent program execution and flash update - critical for field firmware upgrades without system interruption |
| Multi-voltage I/O capability | Supports 1.8 V, 2.5 V, and 3 V logic interfaces directly - avoids external level translators in mixed-voltage systems |
| Integrated RTC with calendar/alarm | 99-year calendar with automatic leap-year correction and alarm interrupt - enables time-stamped logging and scheduled wake-up |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Sub-metering module in commercial building energy management system, collecting voltage/current/temperature data every 15 seconds and transmitting via RS-485. IC Role / Device Role / Timing Role: Main controller executing metrology algorithm, managing isolated RS-485 transceiver, and maintaining accurate time stamp via RTC. Use Value: 384 KB flash accommodates dual-application firmware (metering + diagnostics); SNOOZE mode reduces average current to <2 μA between sampling intervals. |
Use Scenario: Wireless vibration/temperature node on rotating machinery, powered by Li-SOCl₂ battery, reporting condition data every 6 hours via BLE gateway. IC Role / Device Role / Timing Role: System-on-chip managing MEMS sensor interface, ADC acquisition, RTC-based wake-up scheduling, and SPI communication to BLE SoC. Use Value: 0.57 μA STOP mode extends battery life beyond 10 years; 26-channel ADC supports multi-sensor integration without external MUX. |
| Home Appliance Control | Medical Diagnostic Device |
|
Use Scenario: Washing machine main control board requiring motor phase control, water level sensing, user interface, and safety monitoring. IC Role / Device Role / Timing Role: Primary MCU handling PWM motor drive, resistive touch panel scanning, buzzer output, and LVD fault detection. Use Value: 16× 16-bit timers enable precise 3-phase motor commutation; N-ch open-drain I/O drives LED indicators and relays directly. |
Use Scenario: Portable blood glucose monitor with LCD display, button interface, electrochemical sensor readout, and USB charging status indication. IC Role / Device Role / Timing Role: Embedded controller acquiring analog sensor signals, driving segment LCD, managing button debouncing, and regulating USB power path. Use Value: Integrated 1.45 V ADC reference ensures stable glucose measurement accuracy; 24 KB RAM supports USB HID stack and calibration data storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LKAFA#X0 | Includes 8 KB on-chip data flash; otherwise identical pinout, peripherals, and code flash size | Required when firmware requires non-volatile parameter storage (e.g., calibration tables, device IDs) without external EEPROM | Select R5F100LKAFA#X0 if data flash is needed; R5F101LKAFA#X0 saves cost where parameters are stored externally or in code flash |
| R5F101LKAFB#X0 | Same core/peripherals but in 64-pin LFQFP (0.5 mm pitch) package - smaller footprint, finer pitch | Preferred for space-constrained PCBs where rework capability and thermal performance allow 0.5 mm pitch | Choose R5F101LKAFB#X0 only if layout supports 0.5 mm pitch; R5F101LKAFA#X0 offers easier assembly and better thermal dissipation |
Compared with R5F100LKAFA#X0, the R5F101LKAFA#X0 removes data flash to reduce cost and die size while retaining full code flash and peripheral functionality; compared with R5F101LKAFB#X0, it uses a more manufacturable 0.65 mm pitch LQFP package ideal for industrial-grade reliability and hand-soldering prototyping.
Availability
R5F101LKAFA#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and portable medical devices requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for R5F101LKAFA#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 enterprise applications.
The RL78/G13 family 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 crystals or regulators.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101LKAFA#X0?
The R5F101LKAFA#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This enables deterministic execution of real-time control algorithms, such as motor commutation or sensor fusion, within tight timing budgets while maintaining ultra-low power consumption of 66 μA/MHz.
Does the R5F101LKAFA#X0 include on-chip data flash memory?
No, the R5F101LKAFA#X0 does not include on-chip data flash memory. The '101' in the part number explicitly denotes absence of data flash, distinguishing it from the '100' series (e.g., R5F100LKAFA#X0) which includes 8 KB. Firmware must use code flash or external memory for non-volatile parameter storage.
What package type and pin count does the R5F101LKAFA#X0 use?
The R5F101LKAFA#X0 uses a 64-pin LQFP package with 0.65 mm pitch (PLQP0064JA-A), measuring 12 × 12 mm. The '#X0' suffix confirms embossed tape packaging, and the 'FA' in the part number specifies the LQFP-0.65mm variant - distinct from LFQFP (FB) or VFBGA (BG) options in the same family.
What is the operating temperature range for the R5F101LKAFA#X0?
The R5F101LKAFA#X0 is rated for industrial operation from -40°C to +85°C, indicated by the 'D' suffix in its full ordering code (R5F101LKAFA#X0 is part of the D-grade RL78/G13 series). It does not support the extended -40°C to +105°C (G-grade) range used in higher-temperature industrial environments.
Which communication interfaces are supported by the R5F101LKAFA#X0?
The R5F101LKAFA#X0 supports three serial interface types: up to 3 channels of I²C/Simplified I²C, up to 2 channels of UART/LIN, and up to 2 channels of CSI (SPI-compatible serial interface). All operate across the full 1.6–5.5 V supply range and support multi-voltage I/O for interfacing with 1.8 V, 2.5 V, and 3 V peripherals.
R5F101LKAFA#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:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 24K 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:
R5F101LKAFA#X0 FAQ
1.How can I place an order for R5F101LKAFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LKAFA#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 R5F101LKAFA#X0 reliable?
The price and inventory of R5F101LKAFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LKAFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LKAFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LKAFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LKAFA#X0?
R5F101LKAFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LKAFA#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 R5F101LKAFA#X0?
For technical support, including R5F101LKAFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LKAFA#X0 requirements.
6.How does Aetrix verify that R5F101LKAFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LKAFA#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 R5F101LKAFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LKAFA#X0?
All R5F101LKAFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LKAFA#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 R5F101LKAFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LKAFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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