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Renesas R5F101FKDFP#X0
- Part No.:
- R5F101FKDFP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
R5F101FKDFP#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,006
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Product details
Overview
R5F101FKDFP#X0 from Renesas is a 44-pin LQFP-44, 32 MHz RL78/G13 16-bit microcontroller with 96 KB flash, 8 KB data flash, and 8 KB RAM, operating from 1.6–5.5 V. It delivers 41 DMIPS, features ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD), and integrates 12-bit RTC, 10-bit ADC (24 channels), UART/LIN, I²C, and CSI interfaces for embedded control in industrial sensors and smart meters.
For engineers reviewing the R5F101FKDFP#X0 datasheet, R5F101FKDFP#X0 pinout, R5F101FKDFP#X0 application, or R5F101FKDFP#X0 equivalent, key selection criteria include its 96 KB code flash with self-programming, 8 KB data flash with 1M rewrite cycles, 44-pin LQFP package with 24 analog input channels, and support for -40°C to +85°C industrial operation without external crystal.
Technical Context
The R5F101FKDFP#X0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @32 MHz to 30.5 μs @32.768 kHz). It supports HALT, STOP, and SNOOZE low-power modes and includes on-chip high-accuracy ±1.0% oscillator (1–32 MHz).
It integrates a 10-bit A/D converter with up to 24 input channels, real-time clock with calendar and alarm, watchdog timer, DMA controller (4 channels), and serial interfaces including UART/LIN (2 channels), I²C (up to 10 channels), and CSI (2–8 channels) - all accessible within its 44-pin LQFP footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Clock Speed | 32 MHz - delivers 41 DMIPS for real-time control tasks |
| Flash Memory | 96 KB code flash with block erase protection and boot swap function |
| Data Flash | 8 KB with background operation (BGO), 1,000,000 write cycles, 1.8–5.5 V programming |
| RAM | 8 KB on-chip RAM - sufficient for RTOS, protocol stacks, and sensor buffering |
| ADC | 10-bit resolution, 24-channel analog input with internal 1.45 V reference and temperature sensor |
| Operating Voltage | 1.6–5.5 V - enables direct battery (Li-ion, alkaline) or wide-input power supply interfacing |
| Temp Range | -40°C to +85°C - qualified for industrial-grade ambient operation without derating |
Pinout & Package
Package: 44-pin LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, surface-mountable with standard reflow profile.
| 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 single-supply 1.6–5.5 V operation |
| P10/SCK00/SCL00 | Port 10 / SPI clock / I²C clock | Multi-function pin enabling hardware SPI master/slave or I²C bus communication |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Port 11 / SPI input / UART RX / debug RX / I²C data | Shared serial interface pin supporting multiple protocols and on-chip debugging via TOOLRxD |
| P20/ANI0/AVREFP | Analog input 0 / ADC reference positive | Primary analog input channel with selectable AVREFP for precision ratiometric measurements |
| P21/ANI1/AVREFM | Analog input 1 / ADC reference negative | Paired with P20 to define differential ADC reference window or single-ended sensing |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits |
| CLKP/CLKM | External crystal oscillator inputs | Optional connection for high-precision 32.768 kHz crystal; not required due to integrated high-accuracy oscillator |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 66 μA/MHz active current and 0.57 μA RTC+LVD mode enable multi-year battery life in metering |
| Self-programmable flash | On-chip flash library supports safe firmware updates and data logging without external programmer |
| Integrated RTC with calendar | Hardware real-time clock tracks time/date for 99 years with alarm and auto-correction - no external RTC IC needed |
| Multi-protocol serial interfaces | UART/LIN (2 ch), I²C (up to 10 ch), CSI (2–8 ch) allow concurrent sensor, display, and communication peripheral control |
| On-chip voltage detector (LVD) | 14-level programmable LVD with interrupt/reset options ensures reliable brown-out detection across supply variations |
| DMA controller | 4-channel DMA reduces CPU load during ADC sampling, UART transfers, or memory-to-memory moves |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Residential electricity/water/gas meter with tamper detection, pulse counting, and wireless reporting. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, managing EEPROM logging, and driving RF/PLC communication stack. Use Value: 96 KB flash stores dual firmware images; 8 KB data flash logs consumption data with 1M-cycle endurance; RTC enables accurate billing intervals. |
Use Scenario: Wireless temperature/humidity/pressure node in factory automation or HVAC monitoring. IC Role / Device Role / Timing Role: Sensor hub aggregating analog and digital inputs, performing local calibration, and scheduling low-power BLE transmissions. Use Value: 24-channel 10-bit ADC interfaces multiple sensors; SNOOZE mode extends battery life; LIN/UART supports legacy fieldbus integration. |
| Home Appliance Control | Building Automation Panel |
Use Scenario: Washing machine main board controlling motor, valves, display, and user interface. IC Role / Device Role / Timing Role: Real-time motor control coordinator with PWM generation, fault monitoring, and HMI response handling. Use Value: 41 DMIPS handles PID loops and UI rendering; 8 KB RAM buffers touch events and motor profiles; 1.6–5.5 V range tolerates unregulated 5 V rail. |
Use Scenario: DIN-rail mounted lighting or HVAC controller with Modbus RTU and local display. IC Role / Device Role / Timing Role: Protocol gateway translating between RS-485 Modbus and local I²C peripherals (sensors, relays, LCD). Use Value: Dual UART with LIN support enables robust RS-485 transceiver interface; 44-pin LQFP provides ample GPIO for relay drivers and status LEDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101FLDFP#X0 | Same package and core; 128 KB flash, 8 KB data flash, 12 KB RAM | Higher firmware complexity, larger data buffers, or dual-application partitioning | Select when >96 KB flash is required for secure boot, OTA, or extended feature sets |
| R5F100FKDFP#X0 | Same pinout and package; includes 4 KB data flash (vs. 8 KB) and 96 KB flash with data flash security lock | Cost-sensitive designs where reduced data logging capacity is acceptable | Choose for budget-constrained industrial controls where full 8 KB data flash is unnecessary |
Compared with R5F101FLDFP#X0, the R5F101FKDFP#X0 offers optimized cost/performance balance for mid-tier applications; compared with R5F100FKDFP#X0, it provides double the data flash endurance and BGO capability critical for field-updatable devices.
Availability
R5F101FKDFP#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle assurance, and industrial-temperature qualification.
Supply support for R5F101FKDFP#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 automotive, industrial, and IoT markets.
The RL78/G13 family is designed for cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-powered and AC-powered industrial controls.
FAQ
Does R5F101FKDFP#X0 include an integrated debug interface?
Yes, the R5F101FKDFP#X0 includes an on-chip debug interface compatible with Renesas E2 emulator and CS+ IDE. It supports full-speed execution, breakpoints, watchpoints, and memory inspection without requiring external JTAG hardware - simplifying development and field firmware updates for the R5F101FKDFP#X0.
What is the maximum ADC sampling rate supported by R5F101FKDFP#X0?
The R5F101FKDFP#X0 supports up to 660 kSPS aggregate sampling rate across its 10-bit ADC channels. With internal clock source and single-channel conversion, typical acquisition time is ~1.5 μs per sample - sufficient for motor current sensing, power quality analysis, and fast-response sensor conditioning in the R5F101FKDFP#X0.
Can R5F101FKDFP#X0 operate without an external crystal?
Yes, the R5F101FKDFP#X0 operates fully without an external crystal thanks to its integrated high-accuracy ±1.0% on-chip oscillator (selectable from 1–32 MHz). The 32.768 kHz subsystem clock for RTC is also supported internally - eliminating BOM cost and board space for crystals in most R5F101FKDFP#X0 deployments.
Is data flash on R5F101FKDFP#X0 capable of background operation?
Yes, the R5F101FKDFP#X0 supports background operation (BGO) for its 8 KB data flash: CPU instructions can execute from program memory while data flash is being rewritten. This enables seamless firmware parameter updates, event logging, or calibration storage without interrupting real-time tasks on the R5F101FKDFP#X0.
What packaging and lead finish does R5F101FKDFP#X0 use?
The R5F101FKDFP#X0 uses a 44-pin LQFP package (10 × 10 mm, 0.8-mm pitch) with lead-free (Pb-free), halogen-free, and RoHS-compliant finish. It ships in embossed tape (#X0 suffix) compatible with standard SMT pick-and-place equipment - ensuring reliable manufacturability for the R5F101FKDFP#X0 in high-volume production.
R5F101FKDFP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 44-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:
- 31
- 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 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101FKDFP#X0 FAQ
1.How can I place an order for R5F101FKDFP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101FKDFP#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 R5F101FKDFP#X0 reliable?
The price and inventory of R5F101FKDFP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101FKDFP#X0 is usually 5 days.
3.What payment methods are accepted for R5F101FKDFP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101FKDFP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101FKDFP#X0?
R5F101FKDFP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101FKDFP#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 R5F101FKDFP#X0?
For technical support, including R5F101FKDFP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101FKDFP#X0 requirements.
6.How does Aetrix verify that R5F101FKDFP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101FKDFP#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 R5F101FKDFP#X0 meets industry standards.
7.What is the process for return or replacement of R5F101FKDFP#X0?
All R5F101FKDFP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101FKDFP#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 R5F101FKDFP#X0 part is unused and in its original packaging.
Return procedure for R5F101FKDFP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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