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Renesas R5F1027AANA#U5
- Part No.:
- R5F1027AANA#U5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F1027AANA#U5.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,287
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Product details
Overview
R5F1027AANA#U5 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It integrates 16 KB code flash, 2 KB data flash, 1.5 KB RAM, a 24 MHz high-accuracy on-chip oscillator (±1.0% over –20°C to +85°C), and supports 11-channel 10-bit A/D conversion - enabling battery-powered sensor nodes and smart home peripherals.
For engineers reviewing the R5F1027AANA#U5 datasheet, R5F1027AANA#U5 pinout, R5F1027AANA#U5 application, or R5F1027AANA#U5 equivalent, key selection criteria include its 24-pin HWQFN footprint, integrated data flash with background operation (BGO), dual CSI/I²C serial interfaces, DMA support, and CRC hardware acceleration - all within a true low-power platform consuming just 63 μA/MHz.
Technical Context
The R5F1027AANA#U5 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction execution time (0.04167 µs at 24 MHz). Its clock system combines a high-speed on-chip oscillator (1–24 MHz selectable) with a dedicated 15 kHz low-speed oscillator for watchdog and interval timing.
Peripheral integration includes two CSI channels (SPI-compatible), two simplified I²C channels, one UART channel, four 16-bit timer channels with PWM capability, a window watchdog timer, and hardware CRC calculation - all accessible via 22 I/O pins including 2× 6-V-tolerant N-ch open-drain outputs and programmable pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic and battery operation down to single-cell Li-ion or alkaline |
| Flash Memory | 16 KB code flash + 2 KB data flash - supports self-programming and background rewriting (BGO) for firmware updates without halting execution |
| RAM Size | 1.5 KB on-chip RAM - sufficient for real-time control stacks and small buffers in sensor fusion or motor control |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference - suitable for precision analog sensing without external references |
| Power Efficiency | 63 μA/MHz active current - reduces average power in duty-cycled applications like remote controls or IoT endpoints |
| Temperature Range | –40°C to +85°C (Consumer grade A) - qualified for indoor consumer electronics and white goods control |
Pinout & Package
Package: 24-pin HWQFN (4 mm × 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 | Multi-function input | Primary reset input; also serves as SPI01 data-in and key return line - enables shared debug/reset functionality |
| P121/X1 & P122/X2/EXCLK | Clock inputs | Crystal oscillator terminals (1–20 MHz) or external clock input - supports precise timing for communication or sampling |
| P20/ANI0/AVREFP & P21/ANI1/AVREFM | Analog reference pair | Dedicated analog reference voltage inputs - allow ratiometric A/D measurements independent of VDD fluctuations |
| P40/KR0/TOOL0 | Debug & key interface | On-chip debug I/O and key return - eliminates need for separate debug header in cost-sensitive designs |
| P60/SCLA0 & P61/SDAA0 | I²C bus interface | Hardware I²C master/slave SCL/SDA pins - support standard-mode (100 kbps) and fast-mode (400 kbps) communication |
| P00–P03/KR6–KR9 | Key return inputs | Four dedicated key scan inputs with internal pull-up - simplifies mechanical keypad interface without external resistors |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-μA sleep states with fast wake-up (< 4 μs), ideal for energy-harvesting or coin-cell-powered devices |
| Background data flash rewrite (BGO) | Allows concurrent program execution and non-volatile parameter storage - critical for field-upgradable calibration data |
| Hardware CRC accelerator | Offloads checksum computation from CPU, reducing firmware overhead in secure boot or OTA update verification |
| Dual CSI + dual simplified I²C channels | Supports simultaneous communication with multiple sensors (e.g., SPI temperature + I²C humidity + I²C display) without software bit-banging |
| RAM guard & SFR guard | Prevents accidental overwrites of critical memory regions - enhances reliability in safety-aware consumer appliances |
Applications
| Smart Home Sensor Node | White Goods Control Panel |
|---|---|
Use Scenario: Battery-powered multi-sensor hub monitoring temperature, humidity, and motion in HVAC or lighting systems. IC Role / Device Role / Timing Role: Central controller managing sensor polling, local decision logic, and wireless transmission scheduling. Use Value: 63 μA/MHz active current and BGO-enabled firmware updates extend battery life beyond 2 years; 11-channel A/D supports direct analog sensor interfacing. | Use Scenario: Front-panel UI and motor control for washing machines, dishwashers, or refrigerators. IC Role / Device Role / Timing Role: Real-time appliance state manager coordinating display, keypad, motor drivers, and safety interlocks. Use Value: Hardware CRC and RAM/SFR guards ensure robust operation under EMI-rich environments; 22 GPIOs accommodate diverse button, LED, and relay signals. |
| Wireless Remote Control | Industrial Data Logger |
Use Scenario: IR/RF remote with touch keys, backlight, and low-power BLE coexistence. IC Role / Device Role / Timing Role: Keypad scanner, buzzer/clock output generator, and protocol handler for IR modulation or RF packet framing. Use Value: Integrated PCLBUZ0 and programmable clock output eliminate external tone generators; 6-V-tolerant I/O safely interfaces with 5 V IR LEDs. | Use Scenario: Standalone environmental logger recording temperature, pressure, and voltage over weeks on AA batteries. IC Role / Device Role / Timing Role: Autonomous data acquisition engine with scheduled wake-ups, sensor reading, and flash logging. Use Value: 2 KB data flash with 1M-cycle endurance stores >100,000 timestamped samples; STOP mode draws <0.5 μA during idle intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1037AANA#U5 | No data flash (0 KB), ±5.0% oscillator accuracy, no DMA or CRC, only 1 CSI/1 UART channel | Lacks BGO and hardware security features - suitable for cost-sensitive, non-upgradable fixed-function controllers | Select when firmware is static and analog logging is unnecessary; verify timing tolerance in UART/I²C links |
| R5F1027ADNA#U5 | Identical silicon but rated for industrial –40°C to +85°C (D grade); same peripherals and memory | Qualified for higher-reliability industrial equipment where extended temperature validation is required | Choose for production in factory automation or building control where ambient extremes exceed consumer spec |
Compared with R5F1037AANA#U5, the R5F1027AANA#U5 delivers essential data persistence and timing precision for field-upgradable devices; versus R5F1027ADNA#U5, it trades industrial qualification for lower unit cost while retaining identical functionality in consumer environments.
Availability
R5F1027AANA#U5 is available at Aetrix Electronics and suitable for smart home sensor nodes, white goods control panels, wireless remote controls, and industrial data loggers requiring stable component supply across design-in, prototyping, and volume production phases.
Supply support for R5F1027AANA#U5 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and energy-efficient embedded control applications - emphasizing integration, ease of use, and long-term supply stability.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F1027AANA#U5?
The R5F1027AANA#U5 features a high-speed on-chip oscillator adjustable from 1 MHz to 24 MHz, with ±1.0% accuracy over –20°C to +85°C ambient. This specification applies specifically to the R5F102x series (including R5F1027AANA#U5) and enables reliable clocking for UART, I²C, and PWM without external crystals in many applications.
Does R5F1027AANA#U5 support background data flash rewriting (BGO)?
Yes, R5F1027AANA#U5 includes 2 KB of data flash memory with full background operation (BGO) support. This allows the CPU to execute code from program memory while simultaneously erasing or programming data flash - essential for seamless firmware updates and runtime parameter storage without interrupting real-time tasks.
How many serial communication interfaces does R5F1027AANA#U5 provide?
R5F1027AANA#U5 provides two CSI (SPI-compatible) channels, two simplified I²C channels, and one UART channel. These are physically distinct peripheral modules - not multiplexed - enabling concurrent communication with multiple sensors, displays, or host processors without resource contention.
What is the I/O voltage tolerance of R5F1027AANA#U5 pins?
R5F1027AANA#U5 includes two N-ch open-drain I/O pins (P60 and P61) rated for 6 V tolerance, allowing safe interfacing with 5 V peripherals such as legacy IR LEDs or industrial sensors. All other CMOS I/O pins operate at VDD-tolerant levels (1.8–5.5 V), supporting mixed-voltage system design.
Is hardware CRC calculation supported in R5F1027AANA#U5?
Yes, R5F1027AANA#U5 integrates a dedicated hardware CRC accelerator compliant with CRC-16/CCITT and CRC-32 standards. This offloads checksum computation from the CPU, improving throughput in secure boot, OTA update validation, and communication frame integrity checking - a feature absent in the R5F103x series.
R5F1027AANA#U5 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K 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:
R5F1027AANA#U5 FAQ
1.How can I place an order for R5F1027AANA#U5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1027AANA#U5 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 R5F1027AANA#U5 reliable?
The price and inventory of R5F1027AANA#U5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1027AANA#U5 is usually 5 days.
3.What payment methods are accepted for R5F1027AANA#U5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1027AANA#U5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1027AANA#U5?
R5F1027AANA#U5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1027AANA#U5 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 R5F1027AANA#U5?
For technical support, including R5F1027AANA#U5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1027AANA#U5 requirements.
6.How does Aetrix verify that R5F1027AANA#U5 is sourced from the original manufacturer or authorized distributors?
All R5F1027AANA#U5 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 R5F1027AANA#U5 meets industry standards.
7.What is the process for return or replacement of R5F1027AANA#U5?
All R5F1027AANA#U5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1027AANA#U5, 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 R5F1027AANA#U5 part is unused and in its original packaging.
Return procedure for R5F1027AANA#U5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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