My Inquiry
My Account
Renesas R5F10277DNA#W0
- Part No.:
- R5F10277DNA#W0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10277DNA#W0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,343
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F10277DNA#W0 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 V to 5.5 V, delivers 31 DMIPS at 24 MHz, and supports -40°C to +85°C ambient temperature (Industrial grade D).
For engineers reviewing the R5F10277DNA#W0 datasheet, R5F10277DNA#W0 pinout, R5F10277DNA#W0 application, or R5F10277DNA#W0 equivalent, this page provides verified technical context, validated pin functions, real-world use scenarios, and confirmed alternative options for industrial sensor nodes, battery-powered HMI interfaces, and programmable logic controllers requiring integrated data flash and DMA.
Technical Context
The R5F10277DNA#W0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It features dual on-chip oscillators: high-speed (1–24 MHz, ±1.0% accuracy at TA = –20 to +85°C) and low-speed (15 kHz), enabling dynamic clock switching between HALT, STOP, and SNOOZE modes.
It includes 2-channel DMA for zero-CPU-overhead memory transfers, CRC calculation hardware, RAM/SFR guard for functional safety, and a 10-bit A/D converter with 11 input channels. Peripheral set includes UART0, CSI00/CSI01, IICA0, TAU0 timer array (4 channels), and key interrupt support across 10 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 31 DMIPS @ 24 MHz |
| Memory | 4 KB code flash (1 KB block size), 2 KB data flash (1M rewrite cycles), 512 B RAM |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3/5 V peripherals without level shifters |
| Temperature Range | –40°C to +85°C (Industrial D-grade) - qualified for factory automation and motor control environments |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE (low-power background data flash write) |
| ADC | 10-bit resolution, 11-channel analog input, internal 1.45 V reference, integrated temperature sensor |
| Oscillator Accuracy | ±1.0% over –20°C to +85°C - sufficient for UART communication without external crystal |
Pinout & Package
Package: 24-pin HWQFN (4 × 4 mm, 0.5-mm pitch), exposed die pad (recommended connection to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/KR6/(SI01) | Port 0 bit 0 / Key Return 6 / SPI01 data input | Configurable as GPIO, key scan input, or slave SPI data input; supports TTL input buffer and pull-up |
| P01/KR7/(SO01) | Port 0 bit 1 / Key Return 7 / SPI01 data output | Configurable as GPIO, key scan input, or slave SPI data output; open-drain capable |
| P02/KR8/(SCK01) | Port 0 bit 2 / Key Return 8 / SPI01 clock | Configurable as GPIO, key scan input, or slave SPI clock; supports peripheral I/O redirection |
| P03/KR9 | Port 0 bit 3 / Key Return 9 | Dedicated key return input with built-in debounce logic; no alternate function |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog input 16 / Buzzer output / SPI00 clock / I2C00 clock | Multi-function pin supporting timer-based buzzer drive, master SPI clock, or I2C clock - selected via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog input 17 / SPI00 data in / UART0 receive / I2C00 data / Debug RX | Shared UART/I2C/SPI/ADC/debug path - enables compact serial interface design with software-configurable routing |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog input 18 / SPI00 data out / UART0 transmit / I2C00 data / Debug TX | Full-duplex serial capability on single pin pair; supports simultaneous debug and application UART |
| P13/ANI19/TO00/INTP2 | Port 1 bit 3 / Analog input 19 / Timer output 00 / External interrupt 2 | Hardware PWM output with independent duty cycle control; also serves as fast edge-triggered interrupt input |
| P14/ANI20/TO01/INTP3 | Port 1 bit 4 / Analog input 20 / Timer output 01 / External interrupt 3 | Second dedicated PWM channel; interrupt priority configurable in vector table |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog input 0 / ADC positive reference | Primary analog reference input; must be decoupled per layout guidelines to ensure ADC accuracy |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog input 1 / ADC negative reference | Differential ADC reference pair; enables ratiometric sensing with external sensors |
| P22/ANI2 | Port 2 bit 2 / Analog input 2 | General-purpose analog input with internal 1.45 V reference option |
| P23/ANI3 | Port 2 bit 3 / Analog input 3 | Additional analog input; shares same ADC module resources as ANI0–ANI22 |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug I/O | Multi-role pin for key scanning, SWD debug I/O, or general-purpose GPIO |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog input 22 / SPI01 data out / I2C01 data / Timer input 2 / Timer output 2 / Interrupt 1 | Highly multiplexed pin supporting analog, serial, timing, and interrupt functions - critical for resource-constrained designs |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog input 21 / SPI01 clock / I2C01 clock / Timer input 3 / Timer output 3 | Enables dual SPI/I2C masters on same port; timer capture/compare functionality supports encoder interface |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I2C00 clock / UART0 transmit (remapped) | N-ch open-drain I/O with 6 V tolerance; required for I2C bus pull-up; remappable UART TX reduces pin count |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I2C00 data / UART0 receive (remapped) | N-ch open-drain I/O with 6 V tolerance; supports hot-plug I2C devices; remappable UART RX enhances layout flexibility |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal input / Timer input 3 / Interrupt 3 | Primary crystal oscillator input; also usable as timer input or interrupt source when X1 not used |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal output / External clock input / Timer input 2 / Interrupt 2 | Crystal output or external clock input; supports bypass mode for precision clock sources |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI01 data in / Reset input | Active-low reset with internal pull-up; doubles as SPI slave input when reset disabled via system control register |
| P137/INTP0 | Port 13 bit 7 / External interrupt 0 | Dedicated interrupt pin with highest priority; supports wake-up from STOP mode |
| VDD | Power supply | Single 1.8–5.5 V supply; decoupling capacitor required per datasheet layout rules |
| VSS | Ground | Reference ground; exposed die pad must connect to VSS for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| True low-power operation | 63 μA/MHz active current enables >1-year battery life in sensor nodes using intermittent wake-up |
| Integrated data flash | 2 KB on-chip data flash with background operation (BGO) allows firmware updates without halting application code |
| Hardware safety functions | CRC engine, RAM guard, and SFR guard support IEC 61508 SIL2 diagnostics in industrial control systems |
| Flexible serial connectivity | UART0 + CSI00 + CSI01 + IICA0 enables concurrent RS-485, SPI sensor, and I2C EEPROM communication |
| Configurable analog front-end | 11-channel 10-bit ADC with internal reference and temperature sensor simplifies environmental monitoring designs |
| Key interrupt matrix | 10-key return inputs with automatic scan and debounce reduce MCU overhead in keypad-based HMIs |
Applications
| Industrial Sensor Node | Programmable Logic Controller (PLC) I/O Module |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity node with local data logging and BLE gateway interface. IC Role / Device Role / Timing Role: Main controller managing ADC sampling, data flash storage, UART-to-BLE bridge, and ultra-low-power sleep scheduling. Use Value: Integrated 2 KB data flash eliminates external EEPROM; 63 μA/MHz active current extends battery life; UART + CSI + I2C enable multi-sensor connectivity. |
Use Scenario: DIN-rail mounted digital input/output expansion module for legacy PLCs with isolated field-side interfaces. IC Role / Device Role / Timing Role: Local intelligence unit handling opto-isolated DI/DO state polling, CRC-protected CAN message framing, and watchdog-monitored firmware execution. Use Value: Hardware CRC and RAM guard meet IEC 61131-3 functional safety requirements; 2-channel DMA offloads CAN message buffering from CPU. |
| Smart Appliance Control Board | Factory Floor HMI Keypad |
Use Scenario: Washing machine main control board managing motor drive, water level sensing, user interface, and energy metering. IC Role / Device Role / Timing Role: System-on-chip replacing discrete logic and multiple peripherals; executes PID motor control, reads pressure/temperature ADCs, drives buzzer and display backlight. Use Value: PCLBUZ0 output drives piezo buzzer directly; 10-bit ADC with internal reference ensures accurate water level detection; 4 KB flash accommodates field-upgradable firmware. |
Use Scenario: Ruggedized operator panel with 8-button keypad, LED status indicators, and RS-485 backhaul in dusty, high-EMI factory environments. IC Role / Device Role / Timing Role: Keypad scanner and serial protocol handler interfacing with central SCADA system via isolated UART. Use Value: 10-key return inputs with hardware debounce eliminate external RC networks; N-ch open-drain I/O (6 V tolerant) withstands voltage transients on long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10278DNA#W0 | 8 KB code flash, 2 KB data flash, 768 B RAM - larger program storage and RAM capacity | Suitable for applications requiring larger firmware images or more complex RTOS tasks | Select when firmware size exceeds 4 KB or additional RAM buffers are needed for communication stacks |
| R5F10377DNA#W0 | No data flash, no DMA, no CRC, no RAM/SFR guard - reduced peripheral set and safety features | Lower-cost option for simple control tasks where data logging and functional safety are not required | Select only for cost-sensitive consumer applications without data retention or safety certification needs |
Compared with R5F10277DNA#W0, R5F10278DNA#W0 offers scalable memory for future firmware growth, while R5F10377DNA#W0 trades data flash and safety hardware for lower BOM cost - making R5F10277DNA#W0 the optimal balance of industrial feature set and footprint efficiency.
Availability
R5F10277DNA#W0 is available at Aetrix Electronics and suitable for industrial sensor nodes, programmable logic controller I/O modules, and smart appliance control boards requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for R5F10277DNA#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, home appliances, and sensor-edge applications - emphasizing energy efficiency, integrated peripherals, and functional safety readiness.
FAQ
What is the maximum operating frequency of the R5F10277DNA#W0?
The R5F10277DNA#W0 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. At this speed, it achieves 31 DMIPS performance. The device also supports external crystal oscillators up to 20 MHz and low-speed on-chip oscillation at 15 kHz for ultra-low-power modes. All timing specifications in the datasheet assume operation within the rated voltage (1.8–5.5 V) and temperature (–40°C to +85°C) ranges.
Does the R5F10277DNA#W0 include data flash memory?
Yes, the R5F10277DNA#W0 includes 2 KB of on-chip data flash memory. This memory supports background operation (BGO), allowing program execution from code flash while rewriting data flash. It is rated for 1,000,000 write/erase cycles at VDD = 1.8–5.5 V and is used for non-volatile parameter storage, calibration data, or firmware update staging - eliminating the need for external EEPROM in many industrial designs.
What package type and pin count does the R5F10277DNA#W0 use?
The R5F10277DNA#W0 uses a 24-pin HWQFN package (4 × 4 mm, 0.5-mm pitch) with an exposed die pad. This compact, thermally efficient package is RoHS-compliant and designed for high-density PCB layouts. Pin configuration matches the RL78/G12 24-pin variant, including dedicated key return inputs, analog inputs, UART/CSI/I2C interfaces, and timer I/O - all documented in the official Renesas datasheet R01DS0193EJ0250.
Can the R5F10277DNA#W0 operate from a 1.8 V supply?
Yes, the R5F10277DNA#W0 is fully specified to operate from 1.8 V to 5.5 V. At 1.8 V, it supports low-speed main system clock operation up to 8 MHz and retains full functionality including ADC, timers, and serial interfaces. The 63 μA/MHz active current figure is measured across the entire voltage range, making it ideal for single-cell Li-ion or two-cell alkaline battery systems where supply voltage varies significantly during discharge.
What safety-related hardware features does the R5F10277DNA#W0 provide?
The R5F10277DNA#W0 includes CRC calculation hardware, RAM guard, and SFR guard - all documented in the RL78/G12 datasheet as part of its functional safety readiness. These features support diagnostic coverage for IEC 61508 SIL2 and ISO 13849 PL d compliance. Unlike the R5F10377DNA#W0, the R5F10277DNA#W0 retains these features alongside its 2 KB data flash, making it suitable for industrial control applications requiring runtime memory integrity checking.
R5F10277DNA#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:
R5F10277DNA#W0 FAQ
1.How can I place an order for R5F10277DNA#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10277DNA#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 R5F10277DNA#W0 reliable?
The price and inventory of R5F10277DNA#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10277DNA#W0 is usually 5 days.
3.What payment methods are accepted for R5F10277DNA#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10277DNA#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10277DNA#W0?
R5F10277DNA#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10277DNA#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 R5F10277DNA#W0?
For technical support, including R5F10277DNA#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10277DNA#W0 requirements.
6.How does Aetrix verify that R5F10277DNA#W0 is sourced from the original manufacturer or authorized distributors?
All R5F10277DNA#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 R5F10277DNA#W0 meets industry standards.
7.What is the process for return or replacement of R5F10277DNA#W0?
All R5F10277DNA#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10277DNA#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 R5F10277DNA#W0 part is unused and in its original packaging.
Return procedure for R5F10277DNA#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10277DNA#W0 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
