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Renesas R5F10279DNA#W0
- Part No.:
- R5F10279DNA#W0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10279DNA#W0.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,415
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Product details
Overview
R5F10279DNA#W0 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in industrial applications. It integrates 12 KB code flash, 2 KB data flash, 1.5 KB RAM, 10-bit 11-channel ADC, dual CSI/I²C serial interfaces, UART, 4-channel 16-bit TAU timer, and DMA-enabling sensor monitoring and actuator control in battery-powered HVAC controllers.
For engineers reviewing the R5F10279DNA#W0 datasheet, R5F10279DNA#W0 pinout, R5F10279DNA#W0 application, or R5F10279DNA#W0 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade (D-suffix), 24-pin HWQFN package with 0.5-mm pitch, 2 KB on-chip data flash for parameter storage, and support for background data flash rewriting during program execution.
Technical Context
The R5F10279DNA#W0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, delivering 31 DMIPS at 24 MHz while consuming only 63 μA/MHz. Its power management includes HALT, STOP, and SNOOZE modes, plus an on-chip voltage detector with 12 selectable reset thresholds for robust brown-out protection in fluctuating supply environments.
It features a high-accuracy ±1.0% high-speed on-chip oscillator (1–24 MHz) usable across the full 1.8–5.5 V VDD range, eliminating external crystal requirements for cost-sensitive designs. Peripheral I/O redirection via PIOR register enables flexible pin assignment for UART, CSI, and I²C functions without PCB changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space |
| Operating Voltage | 1.8 V to 5.5 V - supports direct connection to Li-ion, 3.3 V, and 5 V rails without level-shifting |
| Flash Memory | 12 KB code flash + 2 KB data flash - enables firmware updates and nonvolatile parameter storage with background operation |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference - suitable for multi-sensor analog front-end in environmental monitors |
| Timers | 4-channel 16-bit TAU timer + 12-bit interval timer + watchdog - provides precise PWM generation and system supervision |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C - supports concurrent communication with sensors, displays, and host controllers |
| Power Modes | HALT, STOP, SNOOZE - achieves sub-μA standby current for energy harvesting or coin-cell applications |
Pinout & Package
Package: 24-pin HWQFN (4 × 4 mm, 0.5-mm pitch), exposed die pad recommended to be connected to VSS for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/KR1/SI01/RESET | Reset input / SPI data input | Active-low hardware reset with internal pull-up; configurable as SPI slave input in peripheral mode |
| P121/KR3/X1 | Crystal oscillator input | Accepts 1–20 MHz ceramic resonator or crystal; used for main system clock when high accuracy required |
| P122/KR2/X2/EXCLK | Crystal oscillator output / external clock input | Drives external crystal; alternatively accepts external clock source up to 20 MHz |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Multi-function I/O | Configurable as UART receive, I²C data, SPI input, or analog input - enables shared pin usage in space-constrained layouts |
| P12/ANI18/SO00/TxD0/TOOLTxD | Multi-function I/O | Supports UART transmit, I²C data, SPI output, or analog input - simplifies interface routing for mixed-protocol systems |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function I/O | Provides programmable clock/buzzer output, SPI clock, or I²C clock - eliminates need for external timing components |
| VDD / VSS | Power supply / ground | Dual VDD/VSS pair ensures stable core and I/O rail operation; exposed pad must connect to VSS |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash | 2 KB with 1,000,000 write cycles and background operation - enables field-updatable calibration tables without halting application code |
| Ultra-low power consumption | 63 μA/MHz active current and sub-μA STOP mode - extends battery life in portable industrial instruments |
| Peripheral I/O redirection | PIOR register allows dynamic remapping of UART/CSI/I²C functions to alternate pins - increases layout flexibility and reduces BOM count |
| Hardware safety functions | CRC calculation unit, RAM guard, and SFR guard - detects memory corruption and prevents unintended register writes in safety-critical firmware |
| High-accuracy on-chip oscillator | ±1.0% tolerance over -40°C to +85°C at 24 MHz - eliminates external crystal for cost-sensitive consumer and industrial controls |
Applications
| Smart Thermostat Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Local temperature/humidity sensing with wireless reporting and relay-driven HVAC actuation. IC Role / Device Role / Timing Role: Main system controller executing PID loop, managing ADC sampling, driving buzzer alerts, and handling UART-based Modbus RTU communication. Use Value: Integrated 11-channel ADC and 2 KB data flash store calibration coefficients and historical readings; SNOOZE mode reduces average current to <10 μA between sensor reads. |
Use Scenario: Battery-powered vibration/temperature node in factory machinery with BLE gateway interface. IC Role / Device Role / Timing Role: Signal acquisition engine performing synchronized analog sampling, FFT preprocessing, and low-power wake-on-event triggering. Use Value: DMA-controlled ADC transfers eliminate CPU overhead; STOP mode with RTC wake-up achieves 5-year battery life using CR2032 cells. |
| Programmable Power Supply Monitor | Appliance Motor Control Interface |
|
Use Scenario: Real-time monitoring of AC/DC converter outputs with overvoltage/undervoltage alarms and event logging. IC Role / Device Role / Timing Role: Dedicated supervisor MCU interfacing with isolated voltage sense circuits via resistive dividers and optocouplers. Use Value: On-chip voltage detector with 12-level threshold selection enables precise trip points; 12 KB flash accommodates multiple alarm profiles and firmware updates. |
Use Scenario: Fan speed regulation and fault detection in commercial refrigeration units using hall-effect rotor position feedback. IC Role / Device Role / Timing Role: Motor timing controller generating complementary PWM outputs with dead-time insertion and current-sense ADC synchronization. Use Value: 4-channel TAU timer supports independent PWM generation; 10-bit ADC samples current sense resistor at precise PWM edges for closed-loop current control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1027ADNA#W0 | 16 KB code flash, no data flash - lacks 2 KB data flash and background rewrite capability | Suitable for fixed-parameter firmware where runtime parameter storage is unnecessary | Select when firmware size exceeds 12 KB and data logging is not required |
| R5F10379DNA#W0 | No data flash, reduced oscillator accuracy (±5.0%), no DMA or CRC - lower cost but fewer safety/performance features | Applicable in basic control tasks with relaxed timing and reliability requirements | Choose for cost-sensitive consumer products where industrial-grade accuracy and data retention are not critical |
Compared with R5F1027ADNA#W0 and R5F10379DNA#W0, the R5F10279DNA#W0 uniquely delivers 2 KB data flash with background operation and ±1.0% oscillator accuracy-making it optimal for industrial applications requiring field-updatable parameters and robust timing without external crystals.
Availability
R5F10279DNA#W0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable power monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F10279DNA#W0 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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line is engineered for ultra-low-power general-purpose embedded control, targeting cost-sensitive industrial equipment, home appliances, and sensor edge devices where energy efficiency and integrated peripherals reduce system complexity.
FAQ
What is the operating temperature range for the R5F10279DNA#W0?
The R5F10279DNA#W0 is rated for industrial operation from –40°C to +85°C, as indicated by the "D" suffix in its part number. This makes it suitable for deployment in factory automation, outdoor metering, and commercial HVAC systems where ambient conditions exceed consumer-grade limits. The device maintains full electrical specifications across this range without derating.
Does the R5F10279DNA#W0 include on-chip data flash memory?
Yes, the R5F10279DNA#W0 integrates 2 KB of on-chip data flash memory with 1,000,000 write/erase cycles and background operation capability. This allows the R5F10279DNA#W0 to execute application code from main flash while simultaneously rewriting data flash-enabling real-time calibration updates, event logging, and configuration storage without interrupting system operation.
What package type and pin count does the R5F10279DNA#W0 use?
The R5F10279DNA#W0 uses a 24-pin HWQFN package measuring 4 × 4 mm with 0.5-mm pitch and an exposed die pad. This compact, thermally efficient package is optimized for high-density industrial PCBs and requires connection of the exposed pad to VSS for optimal thermal dissipation and noise immunity, as specified in the Renesas datasheet.
How many serial communication interfaces does the R5F10279DNA#W0 support?
The R5F10279DNA#W0 supports one UART channel, two CSI (SPI-compatible) channels, and two simplified I²C channels. All interfaces are software-configurable via the peripheral I/O redirection register (PIOR), allowing dynamic assignment of functions like RxD/TxD, SCK/SI/SO, or SCL/SDA to multiple pin combinations-maximizing design flexibility in resource-constrained layouts.
Is the R5F10279DNA#W0 compatible with Renesas' standard development tools?
Yes, the R5F10279DNA#W0 is fully supported by Renesas' e² studio IDE, CS+ development environment, and E2 emulator. It also works with the RL78/G12 starter kit (YRDKRL78G12) and complies with Renesas' standard debug interface protocol-ensuring seamless firmware development, real-time debugging, and flash programming without custom toolchain adaptation for the R5F10279DNA#W0.
R5F10279DNA#W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10279DNA#W0 FAQ
1.How can I place an order for R5F10279DNA#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10279DNA#W0 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 R5F10279DNA#W0 reliable?
The price and inventory of R5F10279DNA#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10279DNA#W0 is usually 5 days.
3.What payment methods are accepted for R5F10279DNA#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10279DNA#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10279DNA#W0?
R5F10279DNA#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10279DNA#W0 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 R5F10279DNA#W0?
For technical support, including R5F10279DNA#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10279DNA#W0 requirements.
6.How does Aetrix verify that R5F10279DNA#W0 is sourced from the original manufacturer or authorized distributors?
All R5F10279DNA#W0 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 R5F10279DNA#W0 meets industry standards.
7.What is the process for return or replacement of R5F10279DNA#W0?
All R5F10279DNA#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10279DNA#W0, 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 R5F10279DNA#W0 part is unused and in its original packaging.
Return procedure for R5F10279DNA#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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