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Renesas R5F101LKDFB#X0
- Part No.:
- R5F101LKDFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LKDFB#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
R5F101LKDFB#X0 from Renesas is a 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), 384 KB flash, 8 KB data flash, 24 KB RAM RL78/G13 16-bit microcontroller operating from 1.6–5.5 V, delivering 41 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), used in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the R5F101LKDFB#X0 datasheet, R5F101LKDFB#X0 pinout, R5F101LKDFB#X0 application, or R5F101LKDFB#X0 equivalent, key selection criteria include its 64-pin LFQFP-0.5mm package, absence of on-chip data flash (R5F101x series), industrial-grade -40°C to +85°C operation (D-grade), and integrated 10-bit 26-channel ADC with internal temperature sensor.
Technical Context
The R5F101LKDFB#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock), and features a unified 1 MB address space with four register banks.
It integrates dual DMA channels, 16-bit timer array (12 channels), real-time clock with calendar/alarm, watchdog timer, UART/SCI/LIN-capable serial interfaces (up to 4 channels), and hardware multiplier/divider for 16×16→32-bit and 32÷32 operations - all optimized for deterministic low-power embedded control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Max Operating Frequency | 32 MHz (41 DMIPS), with selectable high-speed on-chip oscillator (±1.0% accuracy) |
| Memory Configuration | 384 KB code flash (1 KB block size), no data flash (R5F101x series), 24 KB RAM |
| Power Consumption | 66 μA/MHz active mode; 0.57 μA in STOP mode with RTC + LVD enabled |
| Analog Peripherals | 10-bit A/D converter with 26 input channels, internal 1.45 V reference and temperature sensor |
| Digital I/O & Timing | 52 programmable I/O pins (including N-ch open-drain), 12× 16-bit timers, 1× RTC, 1× WDT |
| Serial Interfaces | Up to 4 UART/SCI channels (LIN support), up to 10 I²C/Simplified I²C channels, up to 8 CSI (SPI-compatible) channels |
Pinout & Package
Package: 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD = 1.6–5.5 V; supports mixed-voltage I/O (1.8/2.5/3.0 V interface capability) |
| P00–P07, P10–P17, P20–P27, P30–P37, P40–P47, P50–P57 | General-purpose I/O ports | 52 configurable pins with N-ch open-drain, TTL input buffer, and on-chip pull-up options; key interrupt support per port |
| P10/P11 | SCK00/SCL00 and SI00/RxD0 | Primary SCI0 channel (UART/LIN) and I²C0 clock/data - shared pins enable flexible peripheral mapping |
| P20/P21 | ANI0/AVREFP and ANI1/AVREFM | Dedicated analog inputs with independent positive/negative reference pins for precision ADC measurements |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits with 14-level voltage detection |
| CLKP/CLKM | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC; optional high-speed crystal up to 20 MHz for main system clock |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-μA sleep states with fast wake-up (< 4 μs from STOP), critical for battery life in wireless sensors |
| On-chip debug and self-programming | Allows field firmware updates via boot swap and flash shield window; eliminates need for external programmer in production |
| Background operation (BGO) | Permits code execution from flash while rewriting data flash - not applicable to R5F101x (no data flash), but retains full code flash self-programming capability |
| Integrated RTC with calendar & alarm | 99-year calendar, automatic leap-year correction, and alarm interrupt - enables time-stamped logging without external RTC IC |
| Dual DMA controller (2 channels) | Reduces CPU load during memory-to-peripheral transfers (e.g., ADC → RAM); 2-clock-cycle latency for 8/16-bit SFR ↔ RAM transfers |
| Hardware multiply-accumulate (MAC) | 16×16+32→32-bit signed/unsigned MAC unit accelerates digital filtering and motor control algorithms |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and CO₂ with periodic BLE transmission. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, data preprocessing, RTC-based scheduling, and low-power state transitions. Use Value: 0.57 μA STOP mode with RTC ensures >5-year battery life; 26-channel ADC supports multi-sensor integration without external mux. |
Use Scenario: Residential HVAC controller with touch interface, display, and relay drivers for heating/cooling stages. IC Role / Device Role / Timing Role: Central MCU handling UI responsiveness, PID loop execution, relay timing, and communication with cloud gateway. Use Value: 41 DMIPS at 32 MHz delivers real-time control margin; 52 I/O pins accommodate display, buttons, relays, and sensors in single-chip design. |
| Programmable Logic Relay | Energy Meter Data Logger |
Use Scenario: DIN-rail mounted relay module with configurable I/O logic, delay timers, and Modbus RTU communication. IC Role / Device Role / Timing Role: Deterministic real-time executor of ladder logic equivalents using timer interrupts and GPIO state machines. Use Value: 12× 16-bit timers + dual DMA enable precise pulse-width modulation and synchronized I/O toggling without jitter. |
Use Scenario: Utility-grade meter logging voltage, current, and energy consumption every 15 minutes with tamper detection. IC Role / Device Role / Timing Role: Data acquisition engine with RTC timestamping, secure flash storage, and isolated RS-485 interface. Use Value: On-chip LVD with 14-level detection enables brown-out event logging; 384 KB flash stores >1 year of compressed interval data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LKDFB#X0 | Same package and pinout; includes 8 KB data flash and BGO capability | Required where background flash rewriting (e.g., over-the-air config updates) is essential | Select when non-volatile parameter storage with concurrent execution is needed |
| RL78/G14 R5F104LEAGFB#X0 | Enhanced RL78/G14 core; adds 32-bit integer division, higher max frequency (48 MHz), and larger RAM (32 KB) | Better suited for complex control algorithms or larger firmware footprints | Choose for future-proofing or when migrating from G13 to G14 ecosystem |
Compared with R5F100LKDFB#X0, the R5F101LKDFB#X0 trades data flash and BGO for lower cost and identical code flash/RAM - ideal for fixed-function control; versus RL78/G14, it offers proven maturity and lower power at reduced compute headroom.
Availability
R5F101LKDFB#X0 is available at Aetrix Electronics and suitable for industrial automation, smart building controls, and battery-powered instrumentation requiring stable component supply across extended product lifecycles.
Supply support for R5F101LKDFB#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, and power solutions for automotive, industrial, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for industrial and consumer control systems.
FAQ
What is the operating temperature range for the R5F101LKDFB#X0?
The R5F101LKDFB#X0 is rated for industrial operation from –40°C to +85°C (D-grade). This specification is confirmed in the RL78/G13 datasheet Section 1.1 under "Operating ambient temperature" and applies specifically to part numbers ending in 'D', including R5F101LKDFB#X0. It does not support the extended +105°C (G-grade) range.
Does the R5F101LKDFB#X0 include on-chip data flash memory?
No, the R5F101LKDFB#X0 does not include on-chip data flash memory. As indicated by the "101" in its part number (per Figure 1-1, "101: Data flash is not provided"), this variant provides 384 KB of code flash and 24 KB of RAM only. Data retention must be implemented externally or via code flash emulation techniques.
What package type and pin count does the R5F101LKDFB#X0 use?
The R5F101LKDFB#X0 uses a 64-pin LFQFP package with 0.5-mm pitch and 10 × 10 mm body size, denoted by the "FB" suffix per Renesas' packaging nomenclature. This is verified in Table 1-1 (Page 10) of the datasheet, which lists R5F101LKDFB#X0 under "64-pin plastic LFQFP (10 × 10 mm, 0.5-mm pitch)".
Can the R5F101LKDFB#X0 operate from a 1.8 V supply?
Yes, the R5F101LKDFB#X0 supports operation from 1.6 V to 5.5 V, including 1.8 V. This wide VDD range enables direct interfacing with 1.8 V logic families and compatibility with single-cell Li-ion or multi-cell alkaline supplies - confirmed in Section 1.1 "Ultra-low power consumption technology" of the datasheet.
How many analog input channels does the R5F101LKDFB#X0 support?
The R5F101LKDFB#X0 supports up to 26 analog input channels for its 10-bit A/D converter, as specified in the "A/D converter" feature list (Section 1.1). This includes dedicated pins like P20/ANI0 and P21/ANI1, plus additional ANIxx channels mapped across other port pins - all usable within the 64-pin LFQFP package configuration.
R5F101LKDFB#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:
R5F101LKDFB#X0 FAQ
1.How can I place an order for R5F101LKDFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LKDFB#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 R5F101LKDFB#X0 reliable?
The price and inventory of R5F101LKDFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LKDFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LKDFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LKDFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LKDFB#X0?
R5F101LKDFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LKDFB#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 R5F101LKDFB#X0?
For technical support, including R5F101LKDFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LKDFB#X0 requirements.
6.How does Aetrix verify that R5F101LKDFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LKDFB#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 R5F101LKDFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LKDFB#X0?
All R5F101LKDFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LKDFB#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 R5F101LKDFB#X0 part is unused and in its original packaging.
Return procedure for R5F101LKDFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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