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Renesas R5F10279DNA#U0
- Part No.:
- R5F10279DNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10279DNA#U0.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,025
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Product details
Overview
R5F10279DNA#U0 from Renesas Electronics is a 24-pin HWQFN-packaged 16-bit RL78/G12 microcontroller with 12 KB code flash, 2 KB data flash, 1.5 KB RAM, and ultra-low-power operation (63 μA/MHz). It integrates a 24 MHz high-accuracy on-chip oscillator (±1.0% over –20 to +85°C), 10-bit 11-channel ADC, 4-channel 16-bit TAU timer, UART/CSI/I²C serial interfaces, DMA controller, and CRC hardware - deployed in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the R5F10279DNA#U0 datasheet, R5F10279DNA#U0 pinout, R5F10279DNA#U0 application, or R5F10279DNA#U0 equivalent, key selection criteria include its 24-pin HWQFN (4 × 4 mm, 0.5 mm pitch) footprint, D-grade industrial temperature range (–40 to +85°C), integrated data flash for parameter storage, DMA-accelerated peripheral transfers, and hardware CRC for firmware integrity verification.
Technical Context
The R5F10279DNA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling 31 DMIPS at 24 MHz. Its memory subsystem includes 12 KB code flash (1 KB block size), 2 KB data flash supporting background operation (BGO) and 1M write cycles, and 1.5 KB SRAM - all operating across 1.8–5.5 V supply.
Peripheral integration centers on dual CSI channels (SPI-compatible), one UART channel, two simplified I²C channels, 4-channel 16-bit timer array (TAU0), 12-bit interval timer, watchdog timer, and hardware multiplier/divider. Power management includes HALT, STOP, and SNOOZE modes, on-chip POR/LVD, and 15 kHz low-speed oscillator for wake-up timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 31 DMIPS @ 24 MHz |
| Memory | 12 KB code flash (1 KB erase blocks), 2 KB data flash (BGO enabled, 1M writes), 1.5 KB RAM |
| Operating Voltage | 1.8 V to 5.5 V - supports direct interface with 1.8/2.5/3.3 V peripherals |
| Temperature Range | –40°C to +85°C (D-grade industrial qualification) |
| Power Consumption | 63 μA/MHz active current; STOP mode draws 0.23 μA typical |
| Oscillator Accuracy | High-speed on-chip oscillator ±1.0% over –20 to +85°C, selectable 1–24 MHz |
| Analog Peripherals | 10-bit 11-channel ADC with internal 1.45 V reference and temperature sensor |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C - all configurable via PIOR register |
Pinout & Package
Package: 24-pin HWQFN (4 × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS), compliant with JEDEC MO-220.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/KR1/SI01/RESET | Multi-function input | Primary reset input; also serves as SPI01 data-in and key return line 1 |
| P122/KR2/X2/EXCLK | Crystal/external clock input | Secondary crystal terminal or external main clock input; also key return line 2 |
| P121/KR3/X1 | Crystal input | Main crystal oscillator input; also key return line 3 |
| P137/INTP0 | Interrupt input | Dedicated external interrupt pin 0, supports edge-triggered wake-up from low-power modes |
| P14/ANI20/TO01/INTP3 | Analog/digital/timer/interrupt | 10-bit ADC input 20, TAU0 output channel 1, and interrupt pin 3 - multiplexed per PIOR |
| P13/ANI19/TO00/INTP2 | Analog/digital/timer/interrupt | 10-bit ADC input 19, TAU0 output channel 0, and interrupt pin 2 |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Multi-function serial/analog | ADC input 17, SPI00 data-in, UART0 receive, I²C00 data, and debug tool RX - software-configurable |
| P12/ANI18/SO00/TxD0/TOOLTxD | Multi-function serial/analog | ADC input 18, SPI00 data-out, UART0 transmit, I²C00 clock, and debug tool TX |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function analog/clock/serial | ADC input 16, programmable clock/buzzer output, SPI00 clock, I²C00 clock |
| P23/ANI3 | Analog input | 10-bit ADC input channel 3, referenced to AVREFP/AVREFM |
| P22/ANI2 | Analog input | 10-bit ADC input channel 2 |
| P21/ANI1/AVREFM | Analog reference/input | Negative analog reference voltage input and ADC channel 1 |
| P20/ANI0/AVREFP | Analog reference/input | Positive analog reference voltage input and ADC channel 0 |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Multi-function analog/serial/timer | ADC input 21, SPI01 clock, I²C01 clock, TAU0 input 3, TAU0 output 3 |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Multi-function analog/serial/timer/interrupt | ADC input 22, SPI01 data-out, I²C01 data, TAU0 input 2, TAU0 output 2, interrupt 1 |
| P40/KR0/TOOL0 | Key return/debug I/O | Key return line 0 and bidirectional debug communication port |
| P00/KR6/SI01 | Key return/SPI input | Key return line 6 and secondary SPI01 data-in (when PIOR configured) |
| P01/KR7/SO01/SDA01 | Key return/SPI output/I²C data | Key return line 7, SPI01 data-out, I²C01 data line |
| P02/KR8/SCK01/SCL01 | Key return/SPI clock/I²C clock | Key return line 8, SPI01 clock, I²C01 clock |
| P03/KR9 | Key return | Key return line 9 only |
| P60/KR4/SCLA0/(TxD0) | I²C clock/UART output | I²C00 clock line; TxD0 function available via PIOR redirection |
| P61/KR5/SDAA0/(RxD0) | I²C data/UART input | I²C00 data line; RxD0 function available via PIOR redirection |
| VDD | Power supply | Primary power rail (1.8–5.5 V); powers core, peripherals, and I/O |
| VSS | Ground | Digital and analog ground reference; must connect exposed die pad to VSS |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current enables multi-year battery life in sensor nodes |
| Integrated data flash | 2 KB BGO-capable data flash allows firmware updates and field-parameter storage without halting execution |
| Hardware CRC engine | Dedicated CRC module accelerates firmware signature validation and memory integrity checks |
| Flexible I/O configuration | All GPIO pins support N-ch open-drain, TTL input, and on-chip pull-up - simplifies level-shifting and bus interfacing |
| Multi-source interrupt system | 18 internal + 6 external vectored interrupt sources enable deterministic real-time response |
| On-chip debug interface | Fully integrated on-chip debug circuit supports full-speed tracing and breakpoint debugging without external probes |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered environmental monitoring unit measuring temperature, humidity, and CO₂ in HVAC ducts. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, sensor communication (I²C/UART), data logging to data flash, and low-power wake-up scheduling. Use Value: 63 μA/MHz active current and STOP-mode 0.23 μA draw extend battery life beyond 5 years; 2 KB data flash stores calibration coefficients and event logs. | Use Scenario: Residential thermostat with display, keypad, relay control, and wireless connectivity gateway. IC Role / Device Role / Timing Role: Main control unit handling key scan (KR0–KR9), buzzer feedback (PCLBUZ0), relay timing (TAU0 PWM), and serial comms to Wi-Fi module. Use Value: Hardware key interrupt and programmable clock/buzzer output reduce firmware overhead; 11-channel ADC reads thermistor, ambient light, and supply voltage. |
| Programmable Logic Controller (PLC) I/O Module | Medical Infusion Pump Controller |
Use Scenario: DIN-rail mounted digital I/O expansion module for factory automation systems. IC Role / Device Role / Timing Role: Isolated digital input conditioner and output driver controller with CRC-protected firmware update capability. Use Value: Hardware CRC ensures safe field firmware updates; DMA-accelerated UART transfers prevent data loss during high-speed Modbus RTU polling. | Use Scenario: Safety-critical infusion pump with motor control, pressure sensing, and alarm generation. IC Role / Device Role / Timing Role: Real-time safety monitor executing watchdog-checked control loops, ADC-based pressure monitoring, and fault-triggered buzzer alerts. Use Value: Window watchdog timer and RAM guard detect runtime corruption; 10-bit ADC with internal reference provides stable pressure transducer readings across supply variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1027ADNA#U0 | Same package and pinout; 16 KB code flash, no data flash | Lacks 2 KB data flash - unsuitable for field-parameter storage or BGO-based firmware updates | Select when larger code space is required and data retention is handled externally |
| R5F10379DNA#U0 | Same package and pinout; identical 12 KB code flash but no data flash, no DMA, no CRC, reduced serial interface count | Missing data flash, DMA, and CRC limits use in secure, data-logging, or high-throughput peripheral applications | Select only for cost-sensitive, non-data-logging applications where peripheral count is minimal |
Compared with R5F10279DNA#U0, R5F1027ADNA#U0 trades data flash for extra 4 KB code space, while R5F10379DNA#U0 removes data flash, DMA, and CRC to reduce cost - making R5F10279DNA#U0 the optimal choice for industrial designs requiring embedded parameter storage, peripheral acceleration, and firmware integrity assurance.
Availability
R5F10279DNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, PLC I/O modules, and medical infusion pump controllers requiring stable component supply, long-term lifecycle support, and guaranteed D-grade temperature compliance.
Supply support for R5F10279DNA#U0 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and IoT applications.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfacing, and battery-operated equipment - balancing performance, integration, and energy efficiency.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F10279DNA#U0?
The R5F10279DNA#U0 features a high-speed on-chip oscillator rated up to 24 MHz with ±1.0% accuracy over the industrial temperature range of –20°C to +85°C. This specification applies specifically to R5F102xx devices like the R5F10279DNA#U0 - unlike R5F103xx variants, which offer only ±5.0% accuracy. The oscillator supports eight selectable frequencies (1–24 MHz) and requires no external components.
Does R5F10279DNA#U0 support background data flash programming?
Yes, the R5F10279DNA#U0 supports background operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from program memory while simultaneously rewriting data flash - essential for seamless firmware updates and real-time parameter logging. BGO is enabled by default and does not require halting the main application thread.
How many analog input channels does R5F10279DNA#U0 provide, and what is their resolution?
The R5F10279DNA#U0 provides 11 analog input channels with 10-bit resolution. These channels (ANI0–ANI3, ANI16–ANI22) operate across the full 1.8–5.5 V supply range and include an internal 1.45 V reference voltage and integrated temperature sensor - enabling accurate sensor signal acquisition without external references.
What serial communication interfaces are integrated into R5F10279DNA#U0?
The R5F10279DNA#U0 integrates 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 flexible pin assignment. Notably, it lacks full I²C bus master/slave capability - only simplified I²C is supported per the RL78/G12 family specification.
Is R5F10279DNA#U0 pin-compatible with other RL78/G12 24-pin variants?
Yes, the R5F10279DNA#U0 shares identical pinout and package (24-pin HWQFN, 4 × 4 mm, 0.5 mm pitch) with all other R5F1027x and R5F1037x 24-pin RL78/G12 devices, including R5F1027ADNA#U0 and R5F10379DNA#U0. This enables drop-in replacement within the same package family, though functional differences (e.g., data flash presence, DMA, CRC) must be verified in firmware.
R5F10279DNA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- Packaging:
- Tray
- 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#U0 FAQ
1.How can I place an order for R5F10279DNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10279DNA#U0 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#U0 reliable?
The price and inventory of R5F10279DNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10279DNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F10279DNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10279DNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10279DNA#U0?
R5F10279DNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10279DNA#U0 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#U0?
For technical support, including R5F10279DNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10279DNA#U0 requirements.
6.How does Aetrix verify that R5F10279DNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F10279DNA#U0 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#U0 meets industry standards.
7.What is the process for return or replacement of R5F10279DNA#U0?
All R5F10279DNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10279DNA#U0, 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#U0 part is unused and in its original packaging.
Return procedure for R5F10279DNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10279DNA#U0 Tags
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