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Renesas R5F10277ANA#W0
- Part No.:
- R5F10277ANA#W0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10277ANA#W0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
R5F10277ANA#W0 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller with 4 KB code flash, 2 KB data flash, 512 B RAM, and ultra-low-power operation (63 μA/MHz). It integrates a 10-bit 11-channel ADC, dual CSI/I²C serial interfaces, UART, 4-channel 16-bit TAU timer, DMA controller, and operates from 1.8 V to 5.5 V across –40°C to +85°C for consumer-grade embedded control.
For engineers reviewing the R5F10277ANA#W0 datasheet, R5F10277ANA#W0 pinout, R5F10277ANA#W0 application, or R5F10277ANA#W0 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases in battery-powered sensing and industrial HMI, and validated alternative options for design continuity.
Technical Context
The R5F10277ANA#W0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.04167 μs (@24 MHz on-chip oscillator) to 1 μs (@1 MHz). Its memory subsystem includes 4 KB code flash (1 KB block size), 2 KB data flash with background operation (BGO) and 1M rewrite cycles, and 512 B RAM-enabling firmware updates and parameter storage without halting execution.
Peripherals are optimized for mixed-signal control: dual simplified SPI (CSI) and I²C channels share pins via PIOR register configuration; UART0 supports full-duplex communication; 4-channel 16-bit timer (TAU0) provides PWM, input capture, and interval timing; and the 10-bit ADC supports internal reference (1.45 V) and temperature sensor for self-calibration.
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-powered operation |
| Flash Memory | 4 KB code flash + 2 KB data flash - supports secure self-programming and BGO for runtime parameter updates |
| ADC | 10-bit resolution, 11 channels, internal 1.45 V reference and temperature sensor - eliminates external references for sensor calibration |
| Timers | 4-channel 16-bit TAU timer + 12-bit interval timer + watchdog - delivers precise PWM, event timing, and system safety monitoring |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C - enables concurrent communication with sensors, displays, and host controllers |
| Power Efficiency | 63 μA/MHz in active mode; HALT/STOP/SNOOZE modes - extends battery life in portable and energy-harvesting systems |
Pinout & Package
Package: HWQFN-24 (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O | N-ch open-drain (6 V tolerant) or CMOS I/O; supports key return (KR6–KR9) and peripheral redirection |
| P10–P14 | Port 1 I/O | Primary analog/digital I/O bank: ANI16–ANI20, SCK00/SCL00, SI00/RxD0, SO00/TxD0, TO00/TO01 |
| P20–P23 | Port 2 I/O | Analog inputs ANI0–ANI3 with AVREFP/AVREFM - dedicated for precision A/D conversion |
| P40–P42 | Port 4 I/O | ANI21/ANI22, SCK01/SCL01, SO01/SDA01, TI02/TI03 - secondary serial and timer interface |
| P60/P61 | I²C Interface | SCLA0/SDAA0 - 6 V-tolerant N-ch open-drain pins for I²C bus interfacing |
| P121/P122 | Crystal Oscillator | X1/X2 inputs for external 1–20 MHz crystal - supports high-accuracy timing when on-chip oscillator accuracy is insufficient |
| P125 | Reset Input | Active-low RESET with internal pull-up - accepts external reset assertion or power-on reset signal |
| VDD/VSS | Power Supply | Single 1.8–5.5 V supply; VSS connects to exposed die pad for thermal and noise performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current enables >1-year battery life in coin-cell–powered sensor nodes |
| Data flash with BGO | 2 KB data flash supports background rewriting while executing code - critical for over-the-air firmware updates |
| Dual CSI/I²C channels | Two independent simplified SPI and I²C interfaces allow simultaneous connection to display and environmental sensor |
| On-chip CRC and RAM guard | Hardware CRC engine and RAM protection prevent data corruption in safety-critical control loops |
| Programmable clock/buzzer output | PCLBUZ0 generates 2.44 kHz–10 MHz clocks or audible tones - eliminates external oscillators for timing or UI feedback |
Applications
| Smart Home Sensor Node | Industrial HMI Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor with BLE gateway interface and local LED status feedback. IC Role / Device Role / Timing Role: Main controller managing ADC sampling, sensor fusion, low-power sleep scheduling, and UART-to-BLE bridge timing. Use Value: 63 μA/MHz active current and STOP mode extend CR2032 battery life beyond 18 months; integrated 10-bit ADC eliminates external signal conditioning. | Use Scenario: Touch-enabled front-panel controller for HVAC or PLC with LCD backlight dimming and button debounce. IC Role / Device Role / Timing Role: Real-time UI processor handling touch scan, PWM-controlled backlight, and UART command parsing from main controller. Use Value: Dual CSI/I²C allows concurrent interface to resistive touch controller and OLED display; PCLBUZ0 drives buzzer for tactile feedback without extra driver IC. |
| Portable Medical Monitor | Energy Meter Front-End |
Use Scenario: Handheld pulse oximeter with analog front-end, OLED display, and USB charging detection. IC Role / Device Role / Timing Role: Signal acquisition controller performing synchronized ADC reads, digital filtering, and display refresh timing. Use Value: Internal 1.45 V reference and temperature sensor enable auto-calibration of SpO₂ algorithm; 4 KB code flash accommodates medical-grade firmware with safety checks. | Use Scenario: DIN-rail mounted electricity meter with current/voltage sensing, RTC backup, and RS-485 communication. IC Role / Device Role / Timing Role: Data concentrator managing metrology ADC reads, EEPROM logging, and isolated UART timing for Modbus RTU. Use Value: 2 KB data flash stores tariff schedules and consumption logs with 1M rewrite endurance; 1.8–5.5 V operation tolerates wide input rail from auxiliary power supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10278ANA#W0 | 8 KB code flash, same 2 KB data flash, identical pinout and peripherals | Supports larger firmware images (e.g., with cryptographic stack or extended GUI) | Select when firmware size exceeds 4 KB but no additional peripherals are required |
| R5F10377ANA#W0 | No data flash; reduced oscillator accuracy (±5% vs ±1%); no DMA or CRC | Limited to simpler control tasks without runtime parameter storage or safety features | Choose only if cost reduction outweighs loss of data retention, BGO, and functional safety capabilities |
Compared with R5F10278ANA#W0, the R5F10277ANA#W0 trades flash capacity for lower unit cost while retaining all safety and communication features; versus R5F10377ANA#W0, it adds essential data flash, tighter oscillator tolerance, and hardware CRC-critical for field-upgradable and certified designs.
Availability
R5F10277ANA#W0 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial HMI panels, portable medical monitors, and energy meter front-ends requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for R5F10277ANA#W0 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose applications-including battery-operated sensors, appliance controls, and industrial HMIs-by balancing performance, integration, and energy efficiency in compact packages.
FAQ
What is the maximum operating frequency of the R5F10277ANA#W0?
The R5F10277ANA#W0 supports up to 24 MHz via its high-speed on-chip oscillator (±1.0% accuracy at TA = –20°C to +85°C) or up to 20 MHz using an external crystal (X1) at VDD ≥ 2.7 V. Instruction execution time ranges from 0.04167 μs (24 MHz) to 1 μs (1 MHz), enabling flexible trade-offs between speed and power consumption in the R5F10277ANA#W0 design.
Does the R5F10277ANA#W0 include data flash memory, and what is its endurance?
Yes, the R5F10277ANA#W0 integrates 2 KB of data flash memory with background operation (BGO) capability, allowing code execution during write/erase cycles. It guarantees 1,000,000 rewrite cycles (typical) across the full VDD range (1.8 V to 5.5 V), making it suitable for logging, calibration data storage, and firmware update staging in the R5F10277ANA#W0.
What serial communication interfaces are available on the R5F10277ANA#W0?
The R5F10277ANA#W0 provides one UART channel (UART0), two simplified SPI (CSI) channels, and two simplified I²C channels-all configurable via the peripheral I/O redirection register (PIOR). These interfaces operate concurrently and share pins to maximize flexibility in compact 24-pin HWQFN layout for the R5F10277ANA#W0.
How does the R5F10277ANA#W0 achieve ultra-low-power operation?
The R5F10277ANA#W0 achieves 63 μA/MHz active current through optimized RL78 core design and multiple low-power modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except LSI), and SNOOZE (selected peripherals active during deep sleep). Its 1.8 V minimum supply and automatic clock gating further reduce dynamic power in the R5F10277ANA#W0.
What is the ADC configuration of the R5F10277ANA#W0?
The R5F10277ANA#W0 features a 10-bit successive-approximation ADC with 11 input channels (ANI0–ANI3, ANI16–ANI22), internal 1.45 V reference voltage, and integrated temperature sensor. It supports single- or continuous-conversion modes with programmable sample-and-hold timing, enabling accurate analog sensing without external components in the R5F10277ANA#W0.
R5F10277ANA#W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 512 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:
R5F10277ANA#W0 FAQ
1.How can I place an order for R5F10277ANA#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10277ANA#W0 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 R5F10277ANA#W0 reliable?
The price and inventory of R5F10277ANA#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10277ANA#W0 is usually 5 days.
3.What payment methods are accepted for R5F10277ANA#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10277ANA#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10277ANA#W0?
R5F10277ANA#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10277ANA#W0 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 R5F10277ANA#W0?
For technical support, including R5F10277ANA#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10277ANA#W0 requirements.
6.How does Aetrix verify that R5F10277ANA#W0 is sourced from the original manufacturer or authorized distributors?
All R5F10277ANA#W0 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 R5F10277ANA#W0 meets industry standards.
7.What is the process for return or replacement of R5F10277ANA#W0?
All R5F10277ANA#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10277ANA#W0, 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 R5F10277ANA#W0 part is unused and in its original packaging.
Return procedure for R5F10277ANA#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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