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Renesas R5F10277DNA#U0
- Part No.:
- R5F10277DNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10277DNA#U0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,887
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Product details
Overview
R5F10277DNA#U0 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in industrial applications. It integrates 4 KB code flash, 2 KB data flash, 512 B RAM, operates from 1.8–5.5 V, delivers 31 DMIPS at 24 MHz, and supports HALT/STOP/SNOOZE power modes for battery-powered sensors and smart actuators.
For engineers reviewing the R5F10277DNA#U0 datasheet, R5F10277DNA#U0 pinout, R5F10277DNA#U0 application, or R5F10277DNA#U0 equivalent, key selection criteria include its 2-channel DMA, 2 KB data flash with 1M rewrite cycles, ±1.0% high-speed on-chip oscillator accuracy (–20 to +85°C), and support for UART/CSI/I²C serial interfaces in a compact 4 × 4 mm HWQFN package.
Technical Context
The R5F10277DNA#U0 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). It features dual serial interface capability: one UART channel plus two CSI (Simplified SPI) channels and two Simplified I²C channels - all confirmed for this 24-pin R5F1027x variant.
Its peripheral set includes an 8/10-bit 11-channel A/D converter with internal 1.45 V reference and temperature sensor, four 16-bit timer channels with PWM output capability, a 12-bit interval timer, window watchdog timer, CRC calculation unit, and RAM/SFR guard functions - all enabled in the R5F102 product line per datasheet Section 1.3.3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline; enables deterministic real-time control with low gate count and minimal power leakage. |
| Operating Voltage | 1.8 V to 5.5 V; supports direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Flash Memory | 4 KB code flash + 2 KB data flash; allows firmware updates and nonvolatile parameter storage with background operation (BGO) during program execution. |
| Power Modes | HALT, STOP, SNOOZE; achieves 63 μA/MHz active current and sub-μA standby current for multi-year battery life in remote nodes. |
| Oscillator Accuracy | ±1.0 % @ –20 to +85°C (high-speed on-chip oscillator); eliminates need for external crystal in cost-sensitive industrial controls where timing tolerance >1% is acceptable. |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference, and integrated temperature sensor; enables direct analog monitoring of voltage, current, and thermal conditions without external components. |
| Serial Interfaces | 1 UART + 2 CSI (Simplified SPI) + 2 Simplified I²C channels; provides flexible connectivity to sensors, displays, EEPROMs, and legacy peripherals with minimal pin count. |
Pinout & Package
Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS), compliant with JEDEC MO-220.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O (KR6–KR9) | Key return inputs or general-purpose CMOS I/O; supports N-ch open-drain (VDD-tolerant) mode for wired-AND wake-up detection. |
| P10–P14 | Port 1 I/O (ANI16–ANI20, SCK00/SCL00, SI00/RxD0, SO00/TxD0, TO00/INTP2, TO01/INTP3) | Primary serial and analog interface bank; enables simultaneous UART + CSI00 + CSI01 operation with shared pins via PIOR register configuration. |
| P20–P23 | Port 2 I/O (ANI0–ANI3, AVREFP/AVREFM) | Analog front-end with dedicated reference voltage pins; supports ratiometric A/D measurements and precision sensor biasing. |
| P40–P42 | Port 4 I/O (TOOL0, ANI21/ANI22, SCK01/SCL01, SO01/SDA01, SI01/RESET) | Dual-role pins: debug interface (TOOL0, TOOLRxD/TxD) and secondary serial interface (CSI01/Simplified I²C); RESET pin doubles as SI01 input for bootloader triggering. |
| P60/P61 | I²C bus interface (SCLA0/SDAA0) | Dedicated hardware I²C master/slave interface with clock stretching support; tolerant to 6 V on P61 for mixed-voltage bus interfacing. |
| P121/P122 | Crystal oscillator inputs (X1/X2/EXCLK) | Supports external crystal (1–20 MHz) or external clock source; enables precise timing for communication protocols or synchronous sampling. |
| VDD/VSS | Power supply and ground | Single-supply operation; exposed die pad must be soldered to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Data Flash with BGO | 2 KB data flash supports background operation (BGO): CPU executes from code flash while rewriting data flash - enabling seamless field updates without interrupting real-time tasks. |
| Dual Serial Interface Flexibility | Two independent CSI (Simplified SPI) channels and two Simplified I²C channels allow concurrent communication with multiple sensors and peripherals using only 8 I/O pins - reducing system BOM and PCB area. |
| Hardware Safety Functions | CRC calculation unit, RAM guard, and SFR guard detect memory corruption and register tampering - critical for functional safety compliance in industrial equipment. |
| Ultra-Low-Power Analog Subsystem | 10-bit A/D converter with internal reference (1.45 V) and temperature sensor operates down to 1.8 V supply - enables accurate environmental monitoring in energy-harvesting or coin-cell-powered devices. |
| Configurable Power Modes | Three low-power states (HALT, STOP, SNOOZE) with sub-μA retention current and fast wake-up (<;6.5 µs from HALT) - ideal for duty-cycled sensing applications requiring rapid response. |
Applications
| Industrial Sensor Node | Smart Actuator Controller |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity/pressure sensor node transmitting data via UART to gateway every 5 minutes. IC Role / Device Role / Timing Role: Main system controller managing A/D sampling, data flash logging, low-power scheduling, and UART transmission. Use Value: 2 KB data flash stores 10,000+ sensor readings; ±1.0% oscillator accuracy ensures reliable UART timing at 115.2 kbps without external crystal; SNOOZE mode extends 2xAA battery life to >3 years. |
Use Scenario: Motorized valve controller receiving commands over I²C and driving H-bridge via PWM outputs. IC Role / Device Role / Timing Role: Real-time actuation coordinator with PWM generation, fault monitoring (LVD, watchdog), and I²C command parsing. Use Value: Four 16-bit timer channels provide independent PWM for direction/speed control; RAM guard prevents corrupted control registers during ESD events; 1.8–5.5 V operation matches 3.3 V logic and 5 V motor supply rails. |
| Programmable Logic Relay | Energy Meter Front-End |
|
Use Scenario: DIN-rail mounted relay module executing user-defined ladder logic via on-chip interpreter. IC Role / Device Role / Timing Role: Deterministic execution engine with vectored interrupts for input scanning, logic evaluation, and output update. Use Value: 31 DMIPS at 24 MHz supports >1000 rungs/sec logic scan; 4 KB code flash accommodates interpreter + application; CRC unit validates configuration integrity after power cycle. |
Use Scenario: AC energy meter measuring voltage/current via shunt/resistor dividers and computing kWh using on-chip math units. IC Role / Device Role / Timing Role: Precision analog acquisition and computation unit with multiplier/divider/accumulator for RMS and power calculations. Use Value: 16×16→32-bit multiply-accumulate enables fast digital filtering; 11-channel A/D samples up to 8 analog inputs simultaneously; data flash stores calibration coefficients with 1M-cycle endurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10277DSA#U0 | Same silicon, rated for industrial temperature range (–40 to +85°C) with D-grade qualification; identical electrical specs and pinout. | Required for applications operating beyond consumer-grade ambient limits (e.g., factory floor, outdoor enclosures). | Select when extended temperature validation, AEC-Q100 alignment, or long-term reliability under thermal stress is mandated. |
| R5F10377DNA#U0 | Removes 2 KB data flash and DMA; reduces oscillator accuracy to ±5.0%; omits CRC, RAM guard, and SFR guard functions. | Suitable only for cost-optimized designs where nonvolatile parameter storage, safety checking, or background flash writes are unnecessary. | Choose only if BOM cost reduction outweighs loss of field-upgrade capability and functional safety features - not drop-in compatible for data flash-dependent firmware. |
Compared with R5F10277DNA#U0, the R5F10277DSA#U0 offers identical functionality with certified industrial temperature operation, while the R5F10377DNA#U0 sacrifices data flash, DMA, and safety peripherals to reduce unit cost - making it unsuitable for applications requiring robust parameter storage or runtime integrity checks.
Availability
R5F10277DNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart actuator controllers, and programmable logic relays requiring stable component supply, long-lifecycle support, and guaranteed traceability for ISO 9001-certified production.
Supply support for R5F10277DNA#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 family, including R5F10277DNA#U0, was engineered for ultra-low-power general-purpose control in cost-sensitive industrial equipment - balancing performance, integration, and energy efficiency without external crystals or support components.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for R5F10277DNA#U0?
The R5F10277DNA#U0 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS at that speed. Its minimum instruction execution time is 0.04167 µs, verified under HS mode with VDD ≥ 2.7 V. This performance level supports real-time control loops and protocol stacks in resource-constrained industrial nodes.
Does R5F10277DNA#U0 include data flash memory, and what is its endurance specification?
Yes, R5F10277DNA#U0 includes 2 KB of on-chip data flash memory with a typical endurance of 1,000,000 write/erase cycles and full operation across the 1.8–5.5 V supply range. Background operation (BGO) allows CPU execution from code flash while rewriting data flash - essential for reliable firmware updates and parameter logging in deployed R5F10277DNA#U0 systems.
What serial communication interfaces are supported by R5F10277DNA#U0, and how many channels are available?
R5F10277DNA#U0 supports one UART channel, two CSI (Simplified SPI) channels, and two Simplified I²C channels - all confirmed for the 24-pin R5F1027x variant. These interfaces share pins via the Peripheral I/O Redirection Register (PIOR), enabling flexible routing without additional external logic or multiplexers in the R5F10277DNA#U0 design.
What power-saving modes does R5F10277DNA#U0 support, and what is its active current consumption?
R5F10277DNA#U0 supports HALT, STOP, and SNOOZE modes, achieving true low-power operation with 63 μA/MHz active current. In STOP mode, current drops to sub-μA levels while retaining RAM and register contents. These modes are fully documented in the RL78/G12 User's Manual and validated for R5F10277DNA#U0 across its specified voltage and temperature range.
Is R5F10277DNA#U0 pin-compatible with other RL78/G12 24-pin variants such as R5F10278DNA#U0 or R5F10279DNA#U0?
Yes, R5F10277DNA#U0 is pin-compatible with all RL78/G12 24-pin HWQFN variants (e.g., R5F10278DNA#U0, R5F10279DNA#U0) because they share identical pin configuration, electrical characteristics, and package dimensions (PWQN0024KE-A/PWQN0024KF-A). Differences lie solely in memory size and feature enablement - not pin function or layout - enabling scalable design reuse across the R5F1027x family.
R5F10277DNA#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:
- 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:
R5F10277DNA#U0 FAQ
1.How can I place an order for R5F10277DNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10277DNA#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 R5F10277DNA#U0 reliable?
The price and inventory of R5F10277DNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10277DNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F10277DNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10277DNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10277DNA#U0?
R5F10277DNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10277DNA#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 R5F10277DNA#U0?
For technical support, including R5F10277DNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10277DNA#U0 requirements.
6.How does Aetrix verify that R5F10277DNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F10277DNA#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 R5F10277DNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F10277DNA#U0?
All R5F10277DNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10277DNA#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 R5F10277DNA#U0 part is unused and in its original packaging.
Return procedure for R5F10277DNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10277DNA#U0 Tags
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