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Renesas R5F10277GNA#05
- Part No.:
- R5F10277GNA#05
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10277GNA#05.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,819
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Product details
Overview
R5F10277GNA#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 4 KB code flash, 2 KB data flash, 256 B RAM, 10-bit A/D converter (11 channels), 4-channel 16-bit timer, UART/CSI/I²C serial interfaces, and DMA controller - enabling low-power sensor node and motor control applications.
For engineers reviewing the R5F10277GNA#05 datasheet, R5F10277GNA#05 pinout, R5F10277GNA#05 application, or R5F10277GNA#05 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternative parts - all aligned with Rev.2.50 of R01DS0193EJ0250 and Renesas' official ordering matrix.
Technical Context
The R5F10277GNA#05 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution as fast as 0.04167 µs at 24 MHz (high-speed on-chip oscillator) or as slow as 1 µs at 1 MHz. Its power management includes HALT, STOP, and SNOOZE modes, achieving true low-power operation down to 63 μA/MHz.
It features dual serial interface capability (2 CSI + 2 simplified I²C + 1 UART), CRC hardware acceleration, RAM/SFR guard safety functions, and background data flash rewriting (BGO) - all enabled by its 2 KB data flash memory, which distinguishes it from R5F103-series variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash Memory | 4 KB code flash + 2 KB data flash with self-programming and BGO support |
| RAM | 256 B on-chip RAM with RAM guard for error detection |
| Operating Voltage | 1.8 V to 5.5 V single supply - enables direct interface with 1.8/2.5/3.3 V peripherals |
| Temperature Range | –40°C to +105°C (G-grade industrial qualification) |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA typical), SNOOZE (low-latency wake-up from serial activity) |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Timers & PWM | 4-channel 16-bit TAU timer with up to 3 PWM outputs; 12-bit interval timer; watchdog timer |
Pinout & Package
Package: HWQFN-24 (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O with key return (KR6–KR9) | Configurable CMOS I/O; KR inputs support low-power wake-up from keypad events |
| P10–P14 | Port 1 I/O with analog inputs (ANI16–ANI20), SCK00/SCL00, SI00/SO00 | Primary serial interface pins: CSI00 (SPI-like), I²C00, UART0 - multiplexed via PIOR |
| P20–P23 | Analog input group (ANI0–ANI3), AVREFP/AVREFM | Dedicated analog front-end with ±0.3 V absolute max rating; supports ratiometric sensing |
| P40–P42 | Port 4 I/O with ANI21/ANI22, SCK01/SCL01, SI01/SO01 | Secondary serial interface (CSI01/I²C01); supports independent peripheral operation during BGO |
| P60/P61 | I²C bus interface (SCLA0/SDAA0) | N-ch open-drain I/O with 6 V tolerance - enables level-shifting to 5 V I²C buses |
| P121/P122 | Crystal oscillator inputs (X1/X2) or EXCLK | Supports external 1–20 MHz crystal or clock source; required for precise timing in motor control |
| P125 | Reset input (active-low, Schmitt-trigger) | Accepts external reset signal; also serves as SI01 when not used for RESET |
| VDD/VSS | Power supply and ground | Single 1.8–5.5 V supply; exposed pad must be soldered to PCB ground plane for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables battery-powered operation >1 year on coin cell |
| Data flash with BGO | 2 KB data flash allows firmware parameter updates without halting application code execution |
| Hardware safety functions | CRC accelerator, RAM guard, and SFR guard detect memory corruption in safety-critical control loops |
| Flexible serial connectivity | Dual CSI/I²C channels enable simultaneous communication with sensors (I²C) and displays (SPI) |
| Industrial temperature grade | G-grade (–40°C to +105°C) ensures reliable operation in motor drives and factory automation environments |
| On-chip debug interface | Fully supported SWD-based debugging with flash breakpoints - no external JTAG header required |
Applications
| Smart Thermostat Control | Industrial Motor Drive Monitor |
|---|---|
Use Scenario: Compact HVAC controller measuring ambient temperature/humidity, driving relays, and communicating via I²C sensors and UART to gateway. IC Role / Device Role / Timing Role: Main system MCU executing PID loop at 100 Hz, managing 10-bit A/D sampling, and coordinating dual serial traffic. Use Value: Integrated data flash stores calibration coefficients; SNOOZE mode reduces average current to <10 μA during idle periods. | Use Scenario: Embedded monitor for BLDC motor drive, reading current/voltage feedback, detecting faults, and reporting status over UART. IC Role / Device Role / Timing Role: Real-time fault detector with sub-10 μs interrupt latency; uses TAU timer for precise pulse-width measurement. Use Value: RAM guard prevents silent corruption of critical fault flags; G-grade operation sustains reliability at 95°C junction temperature. |
| Portable Medical Sensor Hub | Factory Automation I/O Module |
Use Scenario: Battery-powered wearable device aggregating ECG, SpO₂, and motion data before wireless transmission. IC Role / Device Role / Timing Role: Low-power aggregator MCU with 11-channel A/D for multi-sensor acquisition and background data flash logging. Use Value: 63 μA/MHz efficiency extends battery life; BGO allows continuous sensor logging while running BLE stack. | Use Scenario: DIN-rail mounted module converting 24 V digital inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol translator and isolation interface controller using UART + GPIO with precise timing for bit-banged RS-485 direction control. Use Value: N-ch open-drain P60/P61 pins directly drive optocouplers; 1.8–5.5 V operation simplifies power design across 3.3 V logic and 24 V field side. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10277GNA#25 | Identical silicon; differs only in packaging (embossed tape vs. tray) | No functional or electrical difference; same pinout, specs, and qualification | Select #25 for automated SMT placement; #05 for manual prototyping or small-batch assembly |
| R5F10377GNA#05 | Omits 2 KB data flash and DMA; lower oscillator accuracy (±5% vs. ±1%); no CRC/RAM guard | Suitable for cost-sensitive, non-data-logging applications where safety features are not required | Choose only if data flash, BGO, and hardware safety are unnecessary - not drop-in compatible for existing R5F10277 firmware |
Compared with R5F10277GNA#05, the #25 variant offers identical functionality in tape-and-reel format for production lines, while R5F10377GNA#05 sacrifices data flash, safety guards, and precision timing to reduce BOM cost - making it unsuitable as a functional replacement without firmware and layout review.
Availability
R5F10277GNA#05 is available at Aetrix Electronics and suitable for industrial motor control, smart building sensors, portable medical devices, and factory automation I/O modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for R5F10277GNA#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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 family - including R5F10277GNA#05 - was engineered for ultra-low-power general-purpose embedded control, targeting cost-sensitive industrial and consumer applications needing robust analog integration, data logging, and extended temperature operation without sacrificing code density or debug capability.
FAQ
What is the maximum operating frequency of the R5F10277GNA#05?
The R5F10277GNA#05 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal (X1), the maximum is 20 MHz under VDD ≥ 2.7 V. Instruction execution time reaches 0.04167 µs at 24 MHz, enabling real-time response in motor control and sensor fusion applications. The R5F10277GNA#05 maintains full functionality across its entire 1.8–5.5 V supply range at these speeds.
Does the R5F10277GNA#05 include data flash memory?
Yes, the R5F10277GNA#05 includes 2 KB of dedicated data flash memory - a defining feature of the R5F102x series. This memory supports background operation (BGO), allowing program execution from code flash while simultaneously rewriting data flash. It is rated for 1,000,000 write/erase cycles at VDD = 1.8–5.5 V, making the R5F10277GNA#05 ideal for storing calibration data, device configuration, or firmware update parameters in field-deployed systems.
What industrial temperature grades are supported by the R5F10277GNA#05?
The R5F10277GNA#05 is qualified for G-grade industrial operation from –40°C to +105°C. This is explicitly indicated by the "G" in the part number and confirmed in Table 1-1 of R01DS0193EJ0250. Unlike A- or D-grade variants, the G-grade version undergoes extended high-temperature testing and guarantees full electrical performance - including data flash reliability and oscillator accuracy - across the full range, making it suitable for under-hood automotive subsystems and factory-floor controllers.
How many serial communication interfaces does the R5F10277GNA#05 support?
The R5F10277GNA#05 supports three distinct serial interface types: one UART channel (UART0), two Simplified SPI (CSI) channels (CSI00 and CSI01), and two Simplified I²C channels (I²C00 and I²C01). These are implemented via the SAU0 peripheral and share pins through the Peripheral I/O Redirection Register (PIOR). This configuration enables concurrent communication with multiple sensors, displays, or host processors - a capability absent in the pin-compatible R5F10377GNA#05 variant.
Is the R5F10277GNA#05 pin-compatible with other RL78/G12 24-pin packages?
Yes, the R5F10277GNA#05 is fully pin-compatible with all other 24-pin HWQFN RL78/G12 variants, including R5F1027AGNA#05, R5F10278GNA#05, and R5F10279GNA#05. Pin mapping follows the standardized 24-pin HWQFN layout shown in Figure 1-4 of R01DS0193EJ0250, with identical mechanical dimensions (4 mm × 4 mm, 0.5 mm pitch) and exposed pad requirements. Functional differences between these parts lie solely in memory size and feature enablement - not pin assignment or electrical characteristics.
R5F10277GNA#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:
- 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10277GNA#05 FAQ
1.How can I place an order for R5F10277GNA#05 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10277GNA#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 R5F10277GNA#05 reliable?
The price and inventory of R5F10277GNA#05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10277GNA#05 is usually 5 days.
3.What payment methods are accepted for R5F10277GNA#05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10277GNA#05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10277GNA#05?
R5F10277GNA#05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10277GNA#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 R5F10277GNA#05?
For technical support, including R5F10277GNA#05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10277GNA#05 requirements.
6.How does Aetrix verify that R5F10277GNA#05 is sourced from the original manufacturer or authorized distributors?
All R5F10277GNA#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 R5F10277GNA#05 meets industry standards.
7.What is the process for return or replacement of R5F10277GNA#05?
All R5F10277GNA#05 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10277GNA#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 R5F10277GNA#05 part is unused and in its original packaging.
Return procedure for R5F10277GNA#05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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