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Renesas R5F10277GNA#45
- Part No.:
- R5F10277GNA#45
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10277GNA#45.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,890
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Product details
Overview
R5F10277GNA#45 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for industrial embedded control. It integrates 4 KB code flash, 2 KB data flash, 256 B RAM, 10-bit 11-channel ADC, and operates from 1.8 V to 5.5 V across –40°C to +105°C ambient temperature. Its ultra-low-power HALT/STOP/SNOOZE modes and 63 μA/MHz active current support battery-powered sensor nodes and motor control interfaces.
For engineers reviewing the R5F10277GNA#45 datasheet, R5F10277GNA#45 pinout, R5F10277GNA#45 application, or R5F10277GNA#45 equivalent, key selection criteria include its G-grade industrial temperature rating, on-chip 2 KB data flash with 1M rewrite cycles, dual CSI/I²C serial interfaces, 2-channel DMA, and CRC hardware acceleration - all within a compact 4 × 4 mm HWQFN package.
Technical Context
The R5F10277GNA#45 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.04167 µs at 24 MHz (high-speed on-chip oscillator). It features dedicated low-speed on-chip oscillator (15 kHz) for watchdog timer operation independent of main clock domain.
Its peripheral set includes TAU0 16-bit timer with 4 channels, 12-bit interval timer, window watchdog timer, and SAU0 serial array unit configured for two CSI channels and one I²C channel - all enabled in HS mode with full data flash background operation (BGO) support during program execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with 31 DMIPS @ 24 MHz |
| Memory Configuration | 4 KB code flash + 2 KB data flash + 256 B RAM; supports self-programming and BGO for firmware updates without halting execution |
| Operating Voltage | 1.8 V to 5.5 V; allows direct interface with 1.8/2.5/3.3/5 V logic domains and battery-backed operation down to 1.8 V |
| Temperature Range | –40°C to +105°C (G-grade); qualified for industrial motor drives, HVAC controllers, and factory automation modules |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE (low-power serial wake-up); extends battery life in wireless sensor endpoints |
| Analog Peripherals | 10-bit 11-channel ADC with internal 1.45 V reference and temperature sensor; enables local thermal monitoring without external components |
| Serial Interfaces | 2 × CSI (SPI-compatible), 1 × I²C, 1 × UART; provides flexible connectivity to sensors, EEPROMs, and displays in space-constrained designs |
Pinout & Package
Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch) with exposed die pad connected to VSS per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O with key return | N-ch open-drain capable; supports matrix keypad scanning and level-shifting to 1.8/2.5/3 V peripherals |
| P10–P14 | Port 1 I/O with analog inputs | ANI16–ANI20 multiplexed; enables 5-channel analog sensing plus UART0 (RxD0/TxD0) and CSI00 (SCK00/SI00/SO00) |
| P20–P23 | Port 2 analog input group | ANI0–ANI3 with AVREFP/AVREFM; forms precision reference pair for ratiometric sensor measurements |
| P40–P42 | Port 4 with analog inputs | ANI21–ANI22 + TOOL0; supports debug communication and additional analog channels |
| P60/P61 | I²C bus interface | SCLA0/SDAA0 with 6 V tolerance; allows direct connection to 5 V I²C slaves without level shifters |
| P121/P122 | Crystal oscillator inputs | X1/X2 pins for external 1–20 MHz crystal; supports precise timing for communication protocols and PWM generation |
| P125 | Reset input | Active-low RESET with internal pull-up; accepts standard 3.3 V or 5 V reset signals and supports on-chip LVD reset |
| VDD/VSS | Power supply terminals | Single 1.8–5.5 V supply; VSS connects to exposed die pad for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash | 2 KB with 1,000,000 write/erase cycles and background operation - enables field firmware updates without interrupting real-time tasks |
| Hardware CRC accelerator | Dedicated CRC calculation engine - offloads checksum computation from CPU for robust firmware validation and secure boot |
| Dual CSI channels | Two independent SPI-compatible serial interfaces - supports simultaneous communication with multiple sensors or display drivers |
| RAM guard & SFR guard | Hardware memory protection units - prevents accidental overwrites of critical variables and peripheral registers in safety-critical applications |
| High-accuracy oscillator | +/-1.0 % frequency accuracy over –20°C to +85°C - eliminates need for external crystal in cost-sensitive industrial controls |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC fans in HVAC systems using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Main system controller executing PID algorithm, generating 3-phase PWM via TAU0, and managing CAN/UART diagnostics. Use Value: 4 KB flash stores motor profile tables; 2 KB data flash logs runtime faults; 11-channel ADC monitors phase currents and temperature. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ via I²C and analog sensors. IC Role / Device Role / Timing Role: Low-power host MCU sampling sensors in SNOOZE mode, waking on timer or external interrupt to process and transmit data. Use Value: 63 μA/MHz active current and STOP mode (0.52 μA) extend 2xAA battery life beyond 2 years; integrated temperature sensor reduces BOM count. |
| Factory Automation I/O Module | Programmable Logic Controller (PLC) Input Card |
Use Scenario: DIN-rail mounted digital I/O expansion module with 8-channel isolated inputs and 4-channel relay outputs. IC Role / Device Role / Timing Role: Interface controller handling opto-isolator status reads, relay driver timing, and Modbus RTU over UART. Use Value: Dual CSI channels configure as SPI masters for isolated input ICs; 2 KB data flash stores calibration coefficients per channel. | Use Scenario: Compact PLC input card accepting 24 V DC field signals with surge protection and diagnostic LED indicators. IC Role / Device Role / Timing Role: Real-time signal conditioner performing debouncing, filtering, and status reporting via RS-485. Use Value: G-grade temperature range ensures reliability in uncooled control cabinets; RAM guard prevents corruption during ESD events on field wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10279GNA#45 | 8 KB code flash, same 2 KB data flash, identical pinout and peripherals | Supports larger firmware images with complex protocol stacks (e.g., MQTT + TLS) | Select when firmware size exceeds 4 KB or future scalability is required; no PCB changes needed |
| R5F10377GNA#45 | No data flash; reduced serial interface count (1 CSI, 0 I²C); same 4 KB flash and 256 B RAM | Suitable for cost-optimized designs where data logging or field updates are not required | Choose for price-sensitive applications without non-volatile parameter storage needs; verify peripheral compatibility |
Compared with R5F10277GNA#45, R5F10279GNA#45 offers headroom for feature-rich firmware while maintaining identical power, timing, and interface behavior; R5F10377GNA#45 trades data flash and dual serial capability for lower unit cost in fixed-function deployments.
Availability
R5F10277GNA#45 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, factory automation I/O modules, and programmable logic controller input cards requiring stable component supply across extended temperature ranges.
Supply support for R5F10277GNA#45 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 delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfacing, and appliance applications - balancing performance, integration, and energy efficiency.
FAQ
What is the maximum operating frequency of the R5F10277GNA#45?
The R5F10277GNA#45 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal (X1), the maximum frequency is 20 MHz under VDD ≥ 2.7 V or 8 MHz under VDD = 1.8–2.4 V. The RL78 core achieves 31 DMIPS at 24 MHz, enabling responsive real-time control in applications such as motor commutation and sensor fusion.
Does the R5F10277GNA#45 include hardware data flash with background operation?
Yes, the R5F10277GNA#45 integrates 2 KB of on-chip data flash memory with background operation (BGO) capability. This allows the CPU to execute instructions from program memory while simultaneously rewriting data flash - essential for reliable firmware updates and parameter logging in industrial equipment without service interruption.
What is the industrial temperature grade of the R5F10277GNA#45?
The R5F10277GNA#45 is rated for operation from –40°C to +105°C (G-grade), making it suitable for demanding industrial environments including factory automation controllers, motor drives, and outdoor sensor enclosures. This extended range exceeds standard A-grade (–40°C to +85°C) and D-grade specifications, ensuring reliability in uncooled control cabinets and high-ambient settings.
How many serial communication interfaces does the R5F10277GNA#45 support?
The R5F10277GNA#45 supports three serial interfaces: two Simplified SPI (CSI) channels, one I²C channel (SCLA0/SDAA0), and one UART channel (RxD0/TxD0). All are implemented via the SAU0 serial array unit and can operate concurrently, enabling simultaneous communication with multiple sensors, EEPROMs, and host systems in compact embedded designs.
Is the R5F10277GNA#45 pin-compatible with other RL78/G12 24-pin variants?
Yes, the R5F10277GNA#45 shares identical pinout and package (HWQFN-24) with all R5F1027x and R5F1037x variants, including R5F10279GNA#45 and R5F10377GNA#45. This enables drop-in replacement for memory or peripheral upgrades - though functional differences (e.g., data flash presence, CSI/I²C count) must be verified in firmware to ensure full compatibility.
R5F10277GNA#45 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:
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10277GNA#45 FAQ
1.How can I place an order for R5F10277GNA#45 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10277GNA#45 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#45 reliable?
The price and inventory of R5F10277GNA#45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10277GNA#45 is usually 5 days.
3.What payment methods are accepted for R5F10277GNA#45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10277GNA#45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10277GNA#45?
R5F10277GNA#45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10277GNA#45 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#45?
For technical support, including R5F10277GNA#45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10277GNA#45 requirements.
6.How does Aetrix verify that R5F10277GNA#45 is sourced from the original manufacturer or authorized distributors?
All R5F10277GNA#45 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#45 meets industry standards.
7.What is the process for return or replacement of R5F10277GNA#45?
All R5F10277GNA#45 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10277GNA#45, 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#45 part is unused and in its original packaging.
Return procedure for R5F10277GNA#45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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