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Renesas R5F101LKDFA#X0
- Part No.:
- R5F101LKDFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LKDFA#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,689
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Product details
Overview
R5F101LKDFA#X0 from Renesas is a 64-pin LQFP-0.65mm, 16-bit RL78/G13 microcontroller with 128 KB flash memory, 12 KB RAM, and no data flash. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes (0.57 μA in RTC+LVD mode), targeting battery-powered industrial control and sensor interface applications.
For engineers reviewing the R5F101LKDFA#X0 datasheet, R5F101LKDFA#X0 pinout, R5F101LKDFA#X0 application, or R5F101LKDFA#X0 equivalent, key selection criteria include its 64-pin LQFP package, absence of on-chip data flash, industrial-grade temperature range (−40°C to +85°C), integrated 10-bit ADC (26 channels), real-time clock with calendar, and hardware UART/SPI/I²C interfaces for embedded system integration.
Technical Context
The R5F101LKDFA#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 low-speed mode). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.
It integrates a 12-bit interval timer, 16-bit timers (12 channels), watchdog timer with dedicated low-speed oscillator, and DMA controller (4 channels) supporting 2-clock transfers between SFR and RAM - all optimized for deterministic real-time response in resource-constrained environments.
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 - delivers 41 DMIPS for real-time control loop execution |
| Flash Memory | 128 KB code flash - supports self-programming with boot swap and flash shield window |
| RAM | 12 KB on-chip RAM - includes dedicated areas for flash library operation (start address FF300H) |
| ADC | 10-bit resolution, 26-channel analog input - includes internal 1.45 V reference and temperature sensor |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA with RTC+LVD active) - enables multi-year battery life |
| Operating Voltage | 1.6 V to 5.5 V - supports direct connection to Li-ion, alkaline, or USB-supplied systems |
| Temperature Range | −40°C to +85°C - qualified for industrial ambient conditions (D-grade) |
Pinout & Package
Package: 64-pin LQFP, 12 × 12 mm, 0.65-mm pitch (PLQP0064JA-A), lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial Clock Input/Output | Shared SPI clock (CSI0) and I²C clock - enables dual-protocol peripheral interfacing |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial Data Input / UART RX / I²C Data | Multi-function pin supporting SPI master/slave, UART receive, debug tool interface, and I²C bidirectional data |
| P20/ANI0/AVREFP | Analog Input Channel 0 / ADC Reference Positive | Primary analog input with selectable AVREFP function - allows external precision reference for ADC accuracy |
| P21/ANI1/AVREFM | Analog Input Channel 1 / ADC Reference Negative | Differential ADC reference pair with ANI1 - supports ratiometric or true differential measurements |
| P22/ANI2 | Analog Input Channel 2 | Dedicated analog input with programmable gain options - used for sensor signal conditioning |
| P147/ANI18 | Analog Input Channel 18 | High-numbered channel accessible via extended port mapping - supports multi-sensor array routing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | Enables sub-μA sleep current with fast wake-up (<10 μs), critical for energy-harvesting and battery-operated nodes |
| On-chip RTC with calendar & alarm | 99-year calendar, time-of-day alarm, and clock correction - eliminates external RTC IC and reduces BOM cost |
| Hardware serial interfaces | Up to 10 I²C, 8 CSI (SPI-compatible), and 4 UART/LIN channels - supports concurrent sensor, display, and bus communication |
| 16-bit timer with PWM output | 12-channel 16-bit timer with complementary PWM and dead-time insertion - suitable for motor control and power regulation |
| Integrated voltage detector (LVD) | 14-level programmable reset/interrupt - provides robust brown-out protection without external supervisor IC |
| Background data flash rewrite | Not applicable - R5F101LKDFA#X0 has no data flash memory (per part number decoding: "101" = no data flash) |
Applications
| Industrial Sensor Node | Smart Meter Interface |
|---|---|
Use Scenario: Battery-powered environmental monitoring unit measuring temperature, humidity, and CO₂ using analog and digital sensors. IC Role / Device Role / Timing Role: Central MCU managing sensor acquisition, data preprocessing, low-power scheduling, and wireless transmission timing. Use Value: 0.57 μA STOP mode extends 2-AA battery life beyond 5 years; 26-channel ADC supports multi-sensor analog front-end without external MUX. |
Use Scenario: Sub-metering module in residential electricity meter, collecting voltage/current samples and communicating via UART to main processor. IC Role / Device Role / Timing Role: Dedicated acquisition engine with precise 32.768 kHz RTC synchronization for time-stamped energy logging. Use Value: Integrated 10-bit ADC with internal reference ensures ±1% measurement accuracy across supply voltage variation; LIN-capable UART enables robust PLC communication. |
| Programmable Logic Controller (PLC) I/O Module | Home Appliance Control Board |
Use Scenario: DIN-rail mounted I/O expansion module converting 24 V DC field signals to digital logic for main PLC controller. IC Role / Device Role / Timing Role: Real-time I/O conditioner with configurable N-ch open-drain outputs, key interrupt handling, and deterministic timer-based sampling. Use Value: −40°C to +85°C rating ensures reliability in unconditioned industrial cabinets; 64-pin LQFP provides sufficient GPIO (up to 52) for discrete I/O mapping. |
Use Scenario: Main control unit in refrigerator, managing compressor drive, defrost cycle, user interface, and door-open detection. IC Role / Device Role / Timing Role: System-on-chip controller executing safety-critical timing (defrost heater cutoff), buzzer output, and real-time clock for display. Use Value: On-chip buzzer output controller and clock output eliminate external drivers; 128 KB flash accommodates firmware updates and feature-rich UI logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LKDFA#X0 | Same package and pinout; includes 8 KB data flash and 12 KB RAM (vs. R5F101LKDFA#X0's 12 KB RAM, no data flash) | Required where background data logging or firmware parameter storage is needed | Select when non-volatile parameter retention or field-upgradable calibration tables are essential |
| R5F101LKDFB#X0 | Same flash/RAM configuration; differs in package - 64-pin LFQFP (0.5 mm pitch) vs. LQFP (0.65 mm pitch) | Preferred for high-density PCB layouts requiring finer pitch and smaller footprint | Choose for space-constrained designs where 0.5 mm pitch assembly capability exists |
Compared with R5F100LKDFA#X0, the R5F101LKDFA#X0 trades data flash for simplified firmware update flow and lower cost, while R5F101LKDFB#X0 offers identical functionality in a more compact package - enabling layout optimization without sacrificing performance or peripheral count.
Availability
R5F101LKDFA#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for R5F101LKDFA#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 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.
FAQ
What is the flash memory size and type for R5F101LKDFA#X0?
R5F101LKDFA#X0 features 128 KB of on-chip code flash memory with block erase (1 KB blocks), self-programming capability, boot swap function, and flash shield window security. It does not include data flash memory - confirmed by the "101" prefix in the part number per Renesas documentation.
Does R5F101LKDFA#X0 support hardware UART, SPI, and I²C simultaneously?
Yes, R5F101LKDFA#X0 supports concurrent hardware serial interfaces: up to 4 UART/LIN channels, 8 CSI (SPI-compatible) channels, and 10 I²C/Simplified I²C channels. Pin multiplexing allows independent assignment, enabling simultaneous sensor (I²C), display (SPI), and host communication (UART) in a single design.
What is the operating temperature grade of R5F101LKDFA#X0?
R5F101LKDFA#X0 is rated for −40°C to +85°C ambient operation and belongs to the "D" industrial grade per Renesas part numbering. This is confirmed by the "D" suffix in the full ordering code structure and aligns with its qualification for industrial control and metering applications.
How many analog input channels does R5F101LKDFA#X0 support?
R5F101LKDFA#X0 supports 26 analog input channels (ANI0–ANI25) with 10-bit resolution, internal 1.45 V reference voltage, and integrated temperature sensor. The ADC operates across the full 1.6 V to 5.5 V supply range, enabling accurate sensing in variable-voltage systems.
Is R5F101LKDFA#X0 pin-compatible with other RL78/G13 64-pin variants?
Yes, R5F101LKDFA#X0 shares identical pinout and package (64-pin LQFP, 0.65 mm pitch, PLQP0064JA-A) with all other RL78/G13 devices in the same pin-count and package family - including R5F100LKDFA#X0 and R5F101LLDFA#X0 - enabling drop-in replacement within the same footprint.
R5F101LKDFA#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:
R5F101LKDFA#X0 FAQ
1.How can I place an order for R5F101LKDFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LKDFA#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 R5F101LKDFA#X0 reliable?
The price and inventory of R5F101LKDFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LKDFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LKDFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LKDFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LKDFA#X0?
R5F101LKDFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LKDFA#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 R5F101LKDFA#X0?
For technical support, including R5F101LKDFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LKDFA#X0 requirements.
6.How does Aetrix verify that R5F101LKDFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LKDFA#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 R5F101LKDFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LKDFA#X0?
All R5F101LKDFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LKDFA#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 R5F101LKDFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LKDFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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