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Renesas R5F10279ANA#45
- Part No.:
- R5F10279ANA#45
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10279ANA#45.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
R5F10279ANA#45 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer and industrial applications. It integrates 12 KB code flash, 2 KB data flash, 1.5 KB RAM, 10-bit A/D converter (11 channels), and dual-channel DMA - operating at 1.8–5.5 V with 63 μA/MHz active current consumption and support for HALT/STOP/SNOOZE power modes.
For engineers reviewing the R5F10279ANA#45 datasheet, R5F10279ANA#45 pinout, R5F10279ANA#45 application, or R5F10279ANA#45 equivalent, this page delivers verified technical context, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The R5F10279ANA#45 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz. Its high-speed on-chip oscillator supports selectable frequencies from 1 to 24 MHz with ±1.0% accuracy over –20 to +85°C, and it includes a dedicated low-speed 15 kHz on-chip oscillator for watchdog operation.
It features a full peripheral set exclusive to R5F102-series devices: CRC calculation unit, RAM/SFR guard safety functions, 2-channel DMA, 2-channel CSI (SPI-compatible), 2-channel simplified I²C, 1-channel UART, 4-channel 16-bit TAU timer with PWM capability, and integrated buzzer/clock output controller - all accessible via 22 I/O pins including 2× 6-V-tolerant N-ch open-drain outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with 0.04167 µs min instruction time @ 24 MHz |
| Memory Configuration | 12 KB code flash + 2 KB data flash + 1.5 KB RAM; supports background data flash rewriting (BGO) and self-programming |
| Power Performance | 63 μA/MHz active current; HALT/STOP/SNOOZE modes reduce current to 0.52 µA (STOP) and 0.94 µA (SNOOZE) |
| Analog Peripherals | 10-bit A/D converter with 11 input channels, internal 1.45 V reference, and on-chip temperature sensor |
| Serial Interfaces | 2 × CSI (SPI-compatible), 2 × simplified I²C, 1 × UART - all configurable via PIOR register for flexible pin mapping |
| Timer & Control | 4-channel 16-bit TAU timer with PWM outputs, 12-bit interval timer, window watchdog timer, and programmable clock/buzzer output |
| Operating Range | 1.8–5.5 V supply voltage; –40 to +85°C ambient (A-grade); 24-pin HWQFN (4 × 4 mm, 0.5 mm pitch) with exposed die pad |
Pinout & Package
Package: 24-pin plastic HWQFN (PWQN0024KE-A / PWQN0024KF-A), 4 × 4 mm body, 0.5 mm pitch, exposed die pad (recommended connection to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/KR6/(SI01) | Port 0 bit 0 / Key return 6 / Serial input | Configurable as general-purpose I/O, key scan input, or SPI slave-in; supports TTL input buffer and pull-up resistor |
| P01/KR7/(SO01) | Port 0 bit 1 / Key return 7 / Serial output | Supports serial data output in CSI mode; also usable as interrupt-capable GPIO or key return line |
| P02/KR8/(SCK01) | Port 0 bit 2 / Key return 8 / Serial clock | Provides master clock for second CSI channel; multiplexed with key scan and general I/O |
| P03/KR9 | Port 0 bit 3 / Key return 9 | Dedicated key return input with internal pull-up; no alternate function; used in matrix keypad interfaces |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog input 16 / Buzzer output / SPI clock / I²C clock | Multi-function pin supporting analog sensing, programmable buzzer tone generation, or synchronous serial communication |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog input 17 / SPI input / UART receive / I²C data / Debug RX | Combines analog acquisition, serial interface, and on-chip debug communication - selected via PIOR register |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog input 18 / SPI output / UART transmit / Debug TX | Enables full-duplex UART or SPI operation while retaining analog input capability when unused for serial |
| P13/ANI19/TO00/INTP2 | Port 1 bit 3 / Analog input 19 / Timer output / External interrupt 2 | Delivers PWM signal or captures external events; retains analog input function when configured as GPIO |
| P14/ANI20/TO01/INTP3 | Port 1 bit 4 / Analog input 20 / Timer output / External interrupt 3 | Second timer output channel with interrupt capability; supports analog sensing and edge-triggered wake-up |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog input 0 / Positive analog reference | Serves as primary analog reference voltage source (AVREFP) or 10-bit ADC input channel 0 |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog input 1 / Negative analog reference | Provides AVREFM reference for differential analog measurements or acts as ADC channel 1 |
| P22/ANI2 | Port 2 bit 2 / Analog input 2 | Dedicated analog input with internal sampling capacitor; supports temperature sensor readout |
| P23/ANI3 | Port 2 bit 3 / Analog input 3 | Third analog input channel; shares port with digital I/O but disables digital functions when used for ADC |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key return 0 / Debug I/O | Primary debug interface pin for programming and run-time tool communication; also used in key matrix scanning |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog input 22 / SPI output / I²C data / Timer input/output / Interrupt 1 | Highly multiplexed pin enabling analog sensing, serial communication, timer capture/compare, and interrupt triggering |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog input 21 / SPI clock / I²C clock / Timer input/output | Supports dual serial protocols and timer functions simultaneously; analog input available when peripherals inactive |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key return 4 / I²C clock / UART transmit | 6-V-tolerant open-drain output; used for I²C bus clocking or UART transmission with level-shifting capability |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key return 5 / I²C data / UART receive | 6-V-tolerant open-drain input/output; supports I²C bidirectional data and UART receive with external pull-up |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key return 3 / Crystal input / Timer input / Interrupt 3 | Primary crystal oscillator input (X1); also configurable as timer input or external interrupt source |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key return 2 / Crystal output / External clock / Timer input / Interrupt 2 | Crystal oscillator output (X2) or external clock input (EXCLK); doubles as timer input or interrupt source |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key return 1 / SPI input / Reset input | Active-low hardware reset pin with Schmitt trigger; also serves as SPI slave-in when reset function disabled |
| P137/INTP0 | Port 13 bit 7 / External interrupt 0 | Dedicated interrupt input with configurable edge sensitivity; used for wake-up from low-power modes |
| VDD | Power supply | 1.8–5.5 V main supply; decoupling required per datasheet layout guidelines |
| VSS | Ground | Reference ground; exposed die pad must be connected to VSS for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current; 0.52 µA STOP mode enables battery-powered operation for years |
| Data flash with BGO | 2 KB data flash supports background rewriting during program execution - critical for firmware-over-the-air updates |
| Hardware safety functions | CRC unit, RAM guard, and SFR guard detect memory corruption and prevent unintended register writes |
| Flexible serial connectivity | 2 × CSI + 2 × simplified I²C + 1 × UART allows concurrent sensor, display, and communication interfaces without external bridges |
| Integrated analog subsystem | 11-channel 10-bit ADC with internal reference and temperature sensor eliminates need for external analog front-end components |
| Programmable clock/buzzer output | PCLBUZ0 generates precise audio tones or clock signals up to 10 MHz - replaces external oscillators in cost-sensitive designs |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in washing machine main control board managing motor drive, water valve timing, and user interface. IC Role / Device Role / Timing Role: Central system controller executing real-time motor commutation logic, ADC-based current sensing, and PWM-driven display backlight. Use Value: 12 KB flash stores complex wash cycle algorithms; 2 KB data flash logs fault codes across power cycles; 63 μA/MHz extends standby life during idle periods. |
Use Scenario: Battery-powered wireless temperature/humidity node transmitting data via UART-to-LoRa module. IC Role / Device Role / Timing Role: Sensor hub acquiring analog readings, performing local calibration, and managing low-power radio wake-up scheduling. Use Value: STOP mode current of 0.52 µA enables >5-year battery life; on-chip temperature sensor reduces BOM count; 2-channel DMA offloads ADC-to-RAM transfers without CPU intervention. |
| Smart Meter Interface | Consumer IoT Hub |
Use Scenario: Electricity meter sub-system handling tamper detection, pulse counting, and secure data logging. IC Role / Device Role / Timing Role: Secure data logger using CRC-protected flash writes and voltage detector-triggered event capture. Use Value: Data flash endurance of 1,000,000 rewrites ensures decade-long logging reliability; LVD interrupt at 2.5 V triggers graceful shutdown before brownout. |
Use Scenario: Voice-controlled smart plug coordinating Wi-Fi module, relay driver, and energy monitoring ADC. IC Role / Device Role / Timing Role: System coordinator managing UART communication with ESP32, driving triac via PWM, and sampling AC voltage/current. Use Value: 11-channel ADC acquires multiple analog inputs simultaneously; simplified I²C interfaces with environmental sensors; SNOOZE mode enables fast wake-up for voice command response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10278ANA#45 | 8 KB code flash, 512 B RAM, same 24-pin HWQFN package and peripheral set | Lower memory capacity suits simpler control tasks (e.g., basic thermostats, LED drivers) | Select when application firmware fits within 8 KB and requires identical low-power profile and pin compatibility |
| R5F10379ANA#45 | No data flash, no CRC/RAM guard, no DMA, reduced serial interfaces (1 CSI, 0 simplified I²C), ±5.0% oscillator accuracy | Cost-optimized variant for non-safety-critical, lower-feature applications (e.g., remote controls, simple timers) | Choose only if data flash, hardware safety, and dual serial channels are unnecessary - not drop-in compatible due to missing peripherals |
Compared with R5F10278ANA#45, the R5F10279ANA#45 provides 4 KB more code flash and 1 KB more RAM for complex firmware and data buffering; versus R5F10379ANA#45, it adds critical reliability features (data flash, CRC, RAM guard) and enhanced connectivity - making it suitable for certified industrial and metering applications where R5F10379ANA#45 falls short.
Availability
R5F10279ANA#45 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, smart meter interfaces, and consumer IoT hubs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for R5F10279ANA#45 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 automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and safety-aware embedded systems - combining energy efficiency, integrated analog, and hardware safety features in compact packages.
FAQ
What is the maximum operating frequency and corresponding power consumption of the R5F10279ANA#45?
The R5F10279ANA#45 operates at up to 24 MHz using its high-speed on-chip oscillator, achieving 31 DMIPS performance. At this frequency, its typical active current is 63 μA per MHz - resulting in approximately 1.51 mA total at 24 MHz with VDD = 3.3 V. Power consumption scales linearly with clock speed, allowing dynamic voltage and frequency scaling to minimize energy use in variable-load applications.
Does the R5F10279ANA#45 support in-system programming and field firmware updates?
Yes, the R5F10279ANA#45 supports in-system programming via its on-chip debug interface and includes a flash shield window function to protect code during updates. Its 2 KB data flash enables background operation (BGO), allowing the R5F10279ANA#45 to execute application code while rewriting data flash - essential for reliable over-the-air firmware updates without system interruption.
How many analog input channels does the R5F10279ANA#45 provide, and what reference options are available?
The R5F10279ANA#45 provides 11 analog input channels (ANI0–ANI3, ANI16–ANI22). It supports three reference configurations: external reference via AVREFP/AVREFM pins, internal 1.45 V reference, or VDD as reference. The internal temperature sensor is connected to ANI22, enabling direct thermal monitoring without external components.
What safety features are implemented in the R5F10279ANA#45 that distinguish it from the R5F10379ANA#45?
The R5F10279ANA#45 includes CRC calculation unit, RAM guard, and SFR guard - hardware features absent in the R5F10379ANA#45. These detect memory corruption, prevent unauthorized register writes, and ensure data integrity in safety-critical applications such as smart meters and industrial controllers, where R5F10279ANA#45 meets higher functional safety requirements.
Is the R5F10279ANA#45 pin-compatible with other RL78/G12 24-pin variants like R5F10277ANA#45 or R5F10278ANA#45?
Yes, the R5F10279ANA#45 is fully pin-compatible with all other 24-pin RL78/G12 variants in the R5F1027x family (e.g., R5F10277ANA#45, R5F10278ANA#45) and shares identical HWQFN-24 (PWQN0024KE-A/PWQN0024KF-A) packaging, pinout, and peripheral mapping - enabling seamless memory-scaling upgrades on the same PCB layout.
R5F10279ANA#45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
R5F10279ANA#45 FAQ
1.How can I place an order for R5F10279ANA#45 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10279ANA#45 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 R5F10279ANA#45 reliable?
The price and inventory of R5F10279ANA#45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10279ANA#45 is usually 5 days.
3.What payment methods are accepted for R5F10279ANA#45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10279ANA#45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10279ANA#45?
R5F10279ANA#45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10279ANA#45 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 R5F10279ANA#45?
For technical support, including R5F10279ANA#45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10279ANA#45 requirements.
6.How does Aetrix verify that R5F10279ANA#45 is sourced from the original manufacturer or authorized distributors?
All R5F10279ANA#45 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 R5F10279ANA#45 meets industry standards.
7.What is the process for return or replacement of R5F10279ANA#45?
All R5F10279ANA#45 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10279ANA#45, 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 R5F10279ANA#45 part is unused and in its original packaging.
Return procedure for R5F10279ANA#45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10279ANA#45 Tags
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ATTINY4-TSHR
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