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Renesas R5F10279GNA#05
- Part No.:
- R5F10279GNA#05
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10279GNA#05.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,666
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Product details
Overview
R5F10279GNA#05 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for industrial embedded control at extended temperature (–40°C to +105°C). It integrates 12 KB code flash, 2 KB data flash, 1.5 KB RAM, 10-bit 11-channel ADC, dual CSI/I²C interfaces, UART, 4-channel 16-bit TAU timer, and DMA-enabling low-power sensor node and motor control applications.
For engineers reviewing the R5F10279GNA#05 datasheet, R5F10279GNA#05 pinout, R5F10279GNA#05 application, or R5F10279GNA#05 equivalent, key selection criteria include its G-grade industrial temp rating, on-chip data flash with 1M rewrite cycles, 63 μA/MHz active power, hardware CRC, and SFR/RAM guard features-critical for robust firmware updates and safety-aware designs.
Technical Context
The R5F10279GNA#05 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.04167 μs (@24 MHz high-speed on-chip oscillator) to 1 μs (@1 MHz), and operates across 1.8–5.5 V supply. Its memory subsystem includes 12 KB code flash (1 KB block size), 2 KB data flash with background operation (BGO), and 1.5 KB RAM with RAM guard.
Peripheral integration centers on dual simplified SPI (CSI) channels, dual simplified I²C (IIC00/IIC01), one UART0, 4-channel 16-bit timer array (TAU0), 12-bit interval timer, window watchdog, and 2-channel DMA-configured via peripheral I/O redirection register (PIOR) for flexible pin assignment in space-constrained 4×4 mm HWQFN layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with 31 DMIPS @24 MHz |
| Flash Memory | 12 KB code flash + 2 KB data flash; supports self-programming and BGO for concurrent execution/rewrite |
| Operating Voltage | 1.8 V to 5.5 V; allows direct interface with 1.8/2.5/3.3/5 V logic without level shifters |
| Temperature Range | –40°C to +105°C (G-grade); qualified for industrial motor drives and factory automation environments |
| Power Consumption | 63 μA/MHz active current; HALT/STOP/SNOOZE modes reduce system-level energy use in battery-powered nodes |
| Analog Peripherals | 10-bit 11-channel ADC with internal 1.45 V reference and integrated temperature sensor; eliminates external references |
| Security & Reliability | Hardware CRC, SFR guard, RAM guard, and flash block erase prohibition-supports functional safety diagnostics |
Pinout & Package
Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch), exposed die pad (recommended connection to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/KR7 | Key Return / Serial Data Output | Configurable as key scan input or SO01 for CSI01; supports low-power touch sensing |
| P01/KR8 | Key Return / Serial Clock Input | Configurable as key scan input or SCK01 for CSI01; enables dual independent SPI peripherals |
| P02/KR9 | Key Return | Dedicated key return line; reduces GPIO count in keypad-based HMI designs |
| P03/KR6 | Key Return / Serial Data Input | Configurable as key scan input or SI01 for CSI01; supports full-duplex synchronous communication |
| P10/SCK00/SCL00 | Serial Clock / I²C Clock | Shared pin for CSI00 clock or IIC00 clock; PIOR enables runtime reassignment |
| P11/SI00/RxD0/SDA00 | Serial Data In / UART RX / I²C Data | Tri-function pin for SPI slave-in, UART receive, or I²C data-maximizes peripheral density |
| P12/SO00/TxD0/TOOLTxD | Serial Data Out / UART TX / Debug TX | Supports UART transmission, SPI master-out, and on-chip debug output simultaneously |
| P13/ANI19/TO00/INTP2 | Analog Input / Timer Output / Interrupt | Enables analog sensing, PWM generation, and edge-triggered interrupt on same pin |
| P14/ANI20/TO01/INTP3 | Analog Input / Timer Output / Interrupt | Provides dual-purpose signal path for sensor feedback and actuator timing control |
| P20/ANI0/AVREFP | Analog Reference Positive | Internal 1.45 V reference source or external AVREFP input; critical for ADC accuracy |
| P21/ANI1/AVREFM | Analog Reference Negative | Ground-referenced analog common; enables differential ADC measurements |
| P22/ANI2 | Analog Input Channel 2 | Direct connection to internal 10-bit ADC; no external buffer required for ≤100 kΩ sources |
| P23/ANI3 | Analog Input Channel 3 | Third dedicated analog input; supports multi-sensor monitoring in compact systems |
| P40/KR0/TOOL0 | Key Return / Debug I/O | Combines key scan, debug interface, and general-purpose I/O-reduces BOM count |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Multi-function Analog/Serial/Timer/Interrupt | Enables simultaneous analog sensing, I²C slave data, PWM output, and interrupt capture |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Multi-function Analog/Serial/Timer | Supports second CSI/I²C channel clocking plus timer input/output-ideal for dual-sensor sync |
| P60/KR4/SCLA0/(TxD0) | I²C Clock / UART TX Alternate | Primary I²C clock line; optional UART transmit function via PIOR-adds protocol flexibility |
| P61/KR5/SDAA0/(RxD0) | I²C Data / UART RX Alternate | Primary I²C data line; optional UART receive function-enables shared bus debugging |
| P121/X1/(TI03)/(INTP3) | Crystal Input / Timer Input / Interrupt | Connects to external crystal; also serves as timer input or interrupt source when not used for X1 |
| P122/X2/EXCLK/(TI02)/(INTP2) | Crystal Output / External Clock / Timer Input | Completes crystal oscillator circuit; accepts external clock or provides timer/interrupt capability |
| P125/KR1/SI01/RESET | Key Return / SPI Input / Reset | Active-low reset with key return and SPI data input functions-minimizes pin count for reset+key |
| P137/INTP0 | External Interrupt 0 | Dedicated interrupt pin with configurable sensitivity; supports fast response to external events |
| VDD | Power Supply | Single 1.8–5.5 V supply; powers all digital and analog blocks including ADC and oscillators |
| VSS | Ground | Common reference for analog/digital domains; exposed pad must connect to VSS for thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| True Low-Power Platform | 63 μA/MHz active current + HALT/STOP/SNOOZE modes enable >10-year battery life in sensor nodes |
| Data Flash with BGO | 2 KB data flash supports background rewriting while executing from code flash-no firmware stalls during logging |
| Hardware Safety Functions | CRC engine, SFR guard, and RAM guard detect memory corruption and prevent unsafe state transitions |
| Flexible Peripheral Mapping | Peripheral I/O redirection register (PIOR) allows dynamic remapping of UART/CSI/I²C pins to optimize PCB layout |
| Industrial Temperature Grade | G-grade (–40°C to +105°C) qualification ensures reliable operation in motor drives, HVAC, and industrial PLCs |
| Integrated Analog Subsystem | 10-bit 11-channel ADC with internal 1.45 V reference and temperature sensor eliminates 3 external components |
Applications
| Smart Sensor Node | Industrial Motor Control |
|---|---|
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and pressure data every 5 minutes. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC conversion, data flash logging, and low-power sleep scheduling. Use Value: 63 μA/MHz active current and SNOOZE mode reduce average power to <2 μA, extending coin-cell life beyond 10 years. |
Use Scenario: Closed-loop speed control of a 24 V DC brushless motor in factory automation equipment. IC Role / Device Role / Timing Role: Real-time PWM generator (TAU0), current sense ADC processor, and CAN/UART gateway. Use Value: Hardware CRC and RAM guard ensure safe firmware updates during field maintenance without risking motor runaway. |
| Home Appliance HMI | Energy Metering Interface |
Use Scenario: Touch-key based user interface for microwave oven with buzzer feedback and display driver timing. IC Role / Device Role / Timing Role: Key scan controller (KR0–KR9), programmable clock/buzzer output (PCLBUZ0), and display timing generator. Use Value: Integrated key return inputs and PCLBUZ0 eliminate external key matrix IC and buzzer driver, cutting BOM cost by $0.32. |
Use Scenario: Pulse counting and tariff switching module interfacing with mechanical kWh meter and smart grid concentrator. IC Role / Device Role / Timing Role: High-accuracy pulse capture (INTP0/INTP1), RTC-backed time-of-use logging (data flash), and RS-485 UART interface. Use Value: 12 KB code flash accommodates DLMS/COSEM protocol stack and secure OTA update handler within single chip. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1027AGNA#05 | 16 KB code flash, same 12 KB data flash, identical package and peripherals; higher flash capacity for larger firmware | Suitable for applications requiring bootloader, crypto libraries, or multi-language UI assets | Select when firmware size exceeds 12 KB but data logging and peripheral set remain unchanged |
| R5F10379GNA#05 | No data flash, no CRC/SFR/RAM guard, reduced CSI/I²C channels (1 each), same 12 KB code flash and G-grade temp | Targeted at cost-sensitive industrial controls where firmware updates are infrequent and safety diagnostics are external | Choose when data flash BGO and hardware safety features are unnecessary-reduces unit cost by ~12% |
Compared with R5F10279GNA#05, R5F1027AGNA#05 offers headroom for future firmware expansion without changing layout, while R5F10379GNA#05 trades data flash reliability and safety features for lower cost in non-critical control tasks.
Availability
R5F10279GNA#05 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance HMIs, and energy metering interfaces requiring stable component supply across extended temperature ranges.
Supply support for R5F10279GNA#05 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/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications requiring robust analog integration, data logging, and functional safety features.
FAQ
What is the maximum operating frequency and accuracy of the high-speed on-chip oscillator in R5F10279GNA#05?
The R5F10279GNA#05 high-speed on-chip oscillator supports frequencies up to 24 MHz with ±1.0% accuracy over –20°C to +85°C and ±2.0% over –40°C to +105°C. This specification is confirmed in the R01DS0193EJ0250 datasheet Section 1.3.2, enabling precise timing for UART baud rates and PWM generation without external crystals in many applications.
Does R5F10279GNA#05 support background data flash rewriting while executing code from main flash?
Yes, R5F10279GNA#05 supports background operation (BGO) for its 2 KB data flash memory. The MCU can execute instructions from code flash while simultaneously rewriting data flash-critical for uninterrupted data logging in industrial monitors. This capability is documented in Section 1.1 Features and Chapter 3 of the RL78/G12 User's Manual.
How many analog input channels does R5F10279GNA#05 provide, and what is their resolution?
R5F10279GNA#05 provides 11 analog input channels with 10-bit resolution, covering ANI0–ANI3 and ANI16–ANI22. It includes an internal 1.45 V reference voltage and integrated temperature sensor, eliminating need for external references in most sensor interface designs per Section 1.1 and Table 1-1 of the datasheet.
What safety-related hardware features are integrated into R5F10279GNA#05?
R5F10279GNA#05 integrates hardware CRC calculation, SFR guard, and RAM guard-features explicitly listed in Section 1.3.3 and Block Diagram (Page 12) of the datasheet. These enable runtime memory integrity checks and prevent unauthorized register modification, supporting IEC 61508 SIL2 diagnostics in industrial control systems.
Is R5F10279GNA#05 pin-compatible with other RL78/G12 24-pin variants like R5F10278GNA#05?
Yes, R5F10279GNA#05 shares identical HWQFN-24 pinout and footprint with all R5F1027xGNA#xx variants (e.g., R5F10278GNA#05, R5F1027AGNA#05). Pin configuration is defined in Section 1.4.2 and confirmed across Table 1-1 ordering part numbers-enabling drop-in replacement for flash size upgrades without PCB revision.
R5F10279GNA#05 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:
- 16
- 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10279GNA#05 FAQ
1.How can I place an order for R5F10279GNA#05 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10279GNA#05 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 R5F10279GNA#05 reliable?
The price and inventory of R5F10279GNA#05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10279GNA#05 is usually 5 days.
3.What payment methods are accepted for R5F10279GNA#05?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10279GNA#05?
R5F10279GNA#05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10279GNA#05 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 R5F10279GNA#05?
For technical support, including R5F10279GNA#05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10279GNA#05 requirements.
6.How does Aetrix verify that R5F10279GNA#05 is sourced from the original manufacturer or authorized distributors?
All R5F10279GNA#05 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 R5F10279GNA#05 meets industry standards.
7.What is the process for return or replacement of R5F10279GNA#05?
All R5F10279GNA#05 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10279GNA#05, 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 R5F10279GNA#05 part is unused and in its original packaging.
Return procedure for R5F10279GNA#05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10279GNA#05 Tags
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