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Renesas R5F1027AANA#U0
- Part No.:
- R5F1027AANA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F1027AANA#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,540
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Product details
Overview
R5F1027AANA#U0 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#U0 datasheet, R5F1027AANA#U0 pinout, R5F1027AANA#U0 application, or R5F1027AANA#U0 equivalent, key selection considerations include its 2-channel DMA support, CRC hardware acceleration, SNOOZE mode operation, and dual I²C-compatible interfaces (IICA0 + IIC01) - all within a 4 mm × 4 mm, 0.5 mm pitch package suitable for space-constrained designs.
Technical Context
The R5F1027AANA#U0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, delivering 31 DMIPS at 24 MHz while maintaining 63 μA/MHz active current consumption. Its memory subsystem includes 16 KB code flash (1 KB block size), 2 KB data flash with background operation (BGO) and 1M write cycles, and 1.5 KB SRAM - all accessible under single-supply 1.8 V to 5.5 V operation.
Peripheral integration centers on low-power mixed-signal control: four 16-bit TAU timer channels, one 12-bit interval timer, one window watchdog, UART0, two CSI (SPI-like) channels, two simplified I²C channels (IIC00/IIC01), and an 11-input 10-bit A/D converter with internal 1.45 V reference and temperature sensor - all configurable via peripheral I/O redirection register (PIOR).
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 Li-ion or coin-cell battery interface without external regulators |
| Flash Memory | 16 KB code flash + 2 KB data flash - supports secure self-programming and BGO for firmware updates during runtime |
| Performance | 31 DMIPS @ 24 MHz; min. instruction time 0.04167 μs - balances compute throughput with sub-100 μA/MHz efficiency |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference, integrated temperature sensor - eliminates external references for thermal monitoring |
| Low-Power Modes | HALT (0.52 μA), STOP (0.23 μA), SNOOZE (1.3 μA) - extends battery life in intermittent-sensing applications |
| Oscillator Accuracy | ±1.0% @ –20°C to +85°C (high-speed on-chip oscillator) - meets timing requirements for UART and I²C without external crystal |
Pinout & Package
Package: 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (recommended connection to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O (KR6–KR9) | Key return inputs with internal pull-up; usable as general-purpose CMOS I/O or N-ch open-drain (VDD-tolerant) |
| P10–P14 | Port 1 I/O (ANI16–ANI20, SCK00/SCL00, SI00/RxD0, SO00/TxD0, TI00/TO00, TI01/TO01) | Multi-function pins supporting UART0, CSI00, timer I/O, and analog inputs - configurable via PIOR |
| P20–P23 | Port 2 I/O (ANI0–ANI3, AVREFP/AVREFM) | Analog front-end: 4-channel ADC inputs with dedicated ± reference pins for ratiometric sensing |
| P40–P42 | Port 4 I/O (TOOL0, ANI21/ANI22, SCK01/SCL01, SO01/SDA01, SI01/RESET) | Debug interface (TOOL0), secondary CSI/I²C channel, and reset input with Schmitt trigger |
| P60/P61 | Port 6 I/O (SCLA0/SDAA0) | Dedicated I²C bus interface (IICA0) with 6 V-tolerant open-drain outputs - interoperable with 3.3 V/5 V systems |
| P121/P122 | Crystal oscillator inputs (X1/X2/EXCLK) | Supports external 1–20 MHz crystal or ceramic resonator; also accepts external clock on EXCLK |
| P125 | Reset input (SI01/RESET) | Active-low reset with internal pull-up; dual function as SPI slave input when not used for reset |
| VDD/VSS | Power supply / Ground | Single 1.8–5.5 V supply; exposed pad must be connected to VSS for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC accelerator | Enables real-time checksum validation of firmware or communication payloads without CPU overhead |
| Data flash with BGO | Allows concurrent program execution and non-volatile parameter storage - critical for field-upgradable devices |
| SNOOZE mode | Permits UART or CSI wake-up from ultra-low-power state while retaining RAM and peripheral context |
| RAM guard & SFR guard | Prevents accidental overwrites of critical memory regions - enhances reliability in safety-aware consumer products |
| Dual I²C-capable interfaces | IICA0 (dedicated) + IIC01 (shared CSI01) provide redundant or multi-bus connectivity for sensor fusion |
| Temperature sensor + 1.45 V reference | Enables self-calibrating thermal monitoring without external components - reduces BOM cost and footprint |
Applications
| Smart Thermostat Node | Wireless Sensor Transmitter |
|---|---|
Use Scenario: Battery-powered HVAC controller measuring ambient temperature/humidity and communicating via UART-to-LoRa module. IC Role / Device Role / Timing Role: Main system controller executing PID logic, managing ADC sampling, and driving UART-based packetized telemetry. Use Value: 1.5 KB RAM accommodates sensor buffers and protocol stack; SNOOZE mode extends 2-AA battery life beyond 2 years. |
Use Scenario: Compact industrial vibration monitor using piezoelectric sensor and BLE gateway interface. IC Role / Device Role / Timing Role: Signal conditioner and digital preprocessor - digitizing analog sensor output and timestamping events via 16-bit TAU timers. Use Value: 11-channel ADC supports multi-axis sensing; hardware CRC ensures integrity of transmitted diagnostic logs. |
| Appliance Control Panel | USB-C Power Adapter Monitor |
Use Scenario: Touchless kitchen appliance UI with capacitive keys, buzzer feedback, and display backlight control. IC Role / Device Role / Timing Role: Human interface manager handling key scan, PCLBUZ0-driven audio feedback, and PWM-controlled LED dimming. Use Value: KR0–KR9 key return inputs eliminate external scan logic; programmable clock/buzzer output replaces discrete oscillators. |
Use Scenario: Real-time voltage/current monitoring in USB-C PD power delivery circuits with isolated communication. IC Role / Device Role / Timing Role: Safety-critical analog monitor interfacing with isolated ADC and reporting via I²C to host MCU. Use Value: 2 KB data flash stores calibration coefficients; ±1.0% oscillator accuracy ensures reliable UART communication with PD controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1027ADNA#U0 | Same core, package, and memory; rated for industrial TA = –40°C to +85°C with enhanced LVD staging | Required for factory automation or outdoor-rated consumer gear where extended temperature stability is mandatory | Select when operating beyond consumer-grade ambient limits or requiring tighter voltage detector thresholds |
| R5F1037AANA#U0 | Removes 2 KB data flash, DMA, CRC, RAM/SFR guard; retains 16 KB code flash and same pinout | Suitable for cost-sensitive, non-field-upgradable devices where BGO and hardware safety features are unnecessary | Choose for fixed-function controllers with static firmware and no runtime parameter storage needs |
Compared with R5F1027AANA#U0, the R5F1027ADNA#U0 offers guaranteed operation at higher ambient stress but shares identical low-power behavior and peripheral set, while R5F1037AANA#U0 sacrifices data retention and safety logic to reduce unit cost - making it viable only where firmware immutability and minimal BOM are primary drivers.
Availability
R5F1027AANA#U0 is available at Aetrix Electronics and suitable for smart home controllers, portable medical sensors, and industrial edge monitors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F1027AANA#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 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 delivers true low-power 16-bit control for cost-sensitive, battery-operated consumer and industrial applications - emphasizing energy efficiency, integrated analog, and robust debug capabilities without sacrificing code density or real-time responsiveness.
FAQ
What is the maximum operating frequency and associated current consumption of the R5F1027AANA#U0?
The R5F1027AANA#U0 operates up to 24 MHz using its high-speed on-chip oscillator, achieving 31 DMIPS performance at 63 μA/MHz typical active current. At full speed and VDD = 3.3 V, total active current is approximately 1.5 mA - verified per R01DS0193EJ0250 Rev.2.50 Section 2.3.
Does the R5F1027AANA#U0 support in-system programming and data retention during power loss?
Yes, the R5F1027AANA#U0 supports self-programming of its 16 KB code flash and 2 KB data flash via on-chip debug or user firmware. Data flash provides 1,000,000 write cycles and retains data across power cycles - critical for logging or calibration storage in the R5F1027AANA#U0.
How many analog input channels does the R5F1027AANA#U0 provide, and what reference options are available?
The R5F1027AANA#U0 integrates an 11-channel 10-bit A/D converter. Inputs include ANI0–ANI3 and ANI16–ANI22. Reference options are VDD (ratiometric) or internal 1.45 V ±1%, selectable per channel - both confirmed in Section 1.1 and electrical specs of the R5F1027AANA#U0 datasheet.
Can the R5F1027AANA#U0 operate without an external crystal, and what is the oscillator accuracy?
Yes, the R5F1027AANA#U0 can run entirely from its high-speed on-chip oscillator, selectable from 1–24 MHz. Accuracy is ±1.0% over –20°C to +85°C (TA range for R5F1027AANA#U0), meeting UART and I²C timing budgets without external timing components.
What safety and reliability features are built into the R5F1027AANA#U0?
The R5F1027AANA#U0 includes hardware CRC calculation, RAM guard, SFR guard, and multiple reset sources (POR, LVD, WDT, illegal instruction). These features are documented in Sections 1.1 and 1.3.3 of the R5F1027AANA#U0 datasheet and enable robust operation in unattended consumer devices.
R5F1027AANA#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:
- 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#U0 FAQ
1.How can I place an order for R5F1027AANA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1027AANA#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 R5F1027AANA#U0 reliable?
The price and inventory of R5F1027AANA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1027AANA#U0 is usually 5 days.
3.What payment methods are accepted for R5F1027AANA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1027AANA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1027AANA#U0?
R5F1027AANA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1027AANA#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 R5F1027AANA#U0?
For technical support, including R5F1027AANA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1027AANA#U0 requirements.
6.How does Aetrix verify that R5F1027AANA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F1027AANA#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 R5F1027AANA#U0 meets industry standards.
7.What is the process for return or replacement of R5F1027AANA#U0?
All R5F1027AANA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1027AANA#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 R5F1027AANA#U0 part is unused and in its original packaging.
Return procedure for R5F1027AANA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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