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Renesas R5F101MJAFA#10
- Part No.:
- R5F101MJAFA#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F101MJAFA#10.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:720
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Product details
Overview
R5F101MJAFA#10 from Renesas is a 80-pin LQFP-0.65mm ultra-low-power 16-bit RL78/G13 microcontroller with 256 KB flash, 8 KB data flash, and 20 KB RAM, operating from 1.6 V to 5.5 V across -40°C to +85°C industrial temperature range. It delivers 41 DMIPS at 32 MHz, integrates RTC, 12-bit interval timer, 16-bit timers (12 channels), 10-bit ADC (26 channels), UART/SPI/I²C interfaces, and supports SNOOZE mode for battery-powered sensor nodes and smart metering.
For engineers reviewing the R5F101MJAFA#10 datasheet, R5F101MJAFA#10 pinout, R5F101MJAFA#10 application, or R5F101MJAFA#10 equivalent, key selection criteria include its 256 KB code flash with self-programming, 8 KB data flash with background operation (BGO), 12-channel 16-bit timer array, 26-channel 10-bit ADC with internal reference, and LQFP-80 package compatibility with industrial-grade thermal and voltage margins.
Technical Context
The R5F101MJAFA#10 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It features dual power domains enabling independent control of peripheral clocks and includes on-chip debug with boot swap and flash shield window functions.
Its memory subsystem comprises 256 KB code flash (1 KB block size), 8 KB data flash with 1,000,000 write cycles and BGO support, and 20 KB SRAM - with flash library RAM usage starting at FAF00H. Power management includes HALT/STOP/SNOOZE modes, POR, and 14-level LVD with interrupt/reset options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 41 DMIPS @ 32 MHz |
| Flash Memory | 256 KB code flash (1 KB erase blocks); supports self-programming with boot swap |
| Data Flash | 8 KB with background operation (BGO), 1M write cycles, VDD = 1.8–5.5 V |
| RAM | 20 KB on-chip SRAM; flash library uses RAM starting at address FAF00H |
| ADC | 10-bit resolution, 26 input channels, internal 1.45 V reference and temperature sensor |
| Timers | 12 × 16-bit timers, 1 × 12-bit interval timer, 1 × real-time clock (calendar, alarm, correction) |
| Operating Range | 1.6 V to 5.5 V supply; -40°C to +85°C ambient (industrial grade, 'D' suffix) |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA with RTC+LVD active), SNOOZE |
Pinout & Package
Package: 80-pin LQFP (14 × 14 mm, 0.65-mm pitch), RoHS-compliant, industrial-grade moisture sensitivity level (MSL 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core/peripheral rail decoupling; supports 1.6–5.5 V operation |
| P10/P11 | SPI0 clock/data (SCK00/SI00), UART0 RX (RxD0) | Shared serial interface pins enable flexible peripheral routing without external muxing |
| P20–P22 | Analog inputs (ANI0–ANI2) with AVREFP/AVREFM | Dedicated analog reference pins allow ratiometric ADC measurements with external sensors |
| P30–P37 | General-purpose I/O with N-ch open drain, pull-up, TTL buffer | Configurable drive strength and logic thresholds support mixed-voltage interfacing (1.8/2.5/3.3 V) |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to POR/LVD circuitry for robust startup |
| CLKP/CLKM | External crystal oscillator inputs | Supports 32.768 kHz crystal for RTC accuracy or higher-frequency crystals up to 20 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power STOP mode | 0.57 μA current draw with RTC and LVD active-enables multi-year battery life in remote sensors |
| Background data flash rewrite | Execute code from flash while rewriting data flash-no application interruption during firmware updates |
| On-chip temperature sensor | Integrated calibrated sensor enables system thermal monitoring without external components |
| Multi-channel 16-bit timer array | 12 independent 16-bit timers support simultaneous PWM generation, input capture, and event counting |
| Flexible serial interface count | Up to 8 CSI (SPI), 4 UART (LIN-capable), and 10 I²C channels-scalable for complex peripheral ecosystems |
| Dedicated low-speed oscillator | On-chip 32.768 kHz oscillator powers RTC independently-eliminates need for external crystal in timekeeping apps |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Residential/utility electricity meter with tamper detection, tariff switching, and wireless reporting. IC Role / Device Role / Timing Role: Main controller managing metrology ADC sampling, RTC-based billing intervals, secure flash storage for logs, and UART/RS485 communication. Use Value: 256 KB flash stores dual firmware images; 8 KB data flash retains 10+ years of consumption history with BGO; STOP mode extends battery backup to >10 years. | Use Scenario: Wireless vibration/temperature node in predictive maintenance systems with edge analytics. IC Role / Device Role / Timing Role: Signal acquisition hub aggregating analog sensor data, performing FFT preprocessing, and scheduling BLE/Wi-SUN transmissions. Use Value: 26-channel 10-bit ADC captures multi-sensor inputs simultaneously; SNOOZE mode reduces average current to <5 μA between wake-ups; 20 KB RAM buffers time-series data. |
| Home Appliance Control | Building Automation Panel |
Use Scenario: Washing machine main board controlling motor drivers, water valves, display, and user interface. IC Role / Device Role / Timing Role: Real-time coordinator managing PWM motor control, touch-key scanning, buzzer output, and fault-safe shutdown sequences. Use Value: 12 × 16-bit timers generate precise 3-phase motor PWM; N-ch open-drain I/O drives LEDs and relays directly; 1.6 V min supply ensures operation during brown-out conditions. | Use Scenario: HVAC zone controller with environmental sensing, actuator control, and BACnet/IP gateway functionality. IC Role / Device Role / Timing Role: Embedded network edge device handling Modbus RTU over RS485, local PID loop execution, and RTC-synchronized schedule management. Use Value: UART with LIN support enables legacy fieldbus integration; 256 KB flash hosts protocol stacks and web UI assets; industrial temp rating ensures reliability in duct-mounted enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100MJAFA#10 | Includes 8 KB data flash; same package, pinout, and peripherals-but adds data flash capability | Preferred where field firmware updates or parameter logging require dedicated nonvolatile storage | Select when BGO-enabled data retention is required; otherwise, R5F101MJAFA#10 offers cost advantage |
| R5F101MJAFB#10 | Identical core specs but in 80-pin LFQFP (0.5-mm pitch); smaller footprint, tighter layout constraints | Better suited for space-constrained PCBs where thermal dissipation allows finer-pitch assembly | Choose for compact designs needing identical functionality in smaller package; verify reflow profile compatibility |
Compared with R5F100MJAFA#10 and R5F101MJAFB#10, the R5F101MJAFA#10 provides optimal balance of industrial temperature support, 80-pin LQFP manufacturability, and cost-efficient flash configuration-making it ideal for high-volume, thermally demanding embedded control applications without data flash overhead.
Availability
R5F101MJAFA#10 is available at Aetrix Electronics and suitable for smart energy metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply, long-term lifecycle assurance, and industrial-grade reliability.
Supply support for R5F101MJAFA#10 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/G13 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications-emphasizing energy efficiency, integrated peripherals, and seamless toolchain support.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101MJAFA#10?
The R5F101MJAFA#10 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs under this condition. The core also supports ultra-low-speed operation down to 32.768 kHz (30.5 μs instruction time) for RTC and low-power monitoring tasks-enabling dynamic performance scaling based on real-time workload demands.
Does the R5F101MJAFA#10 include data flash memory, and what are its endurance and voltage requirements?
Yes, the R5F101MJAFA#10 includes 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical). It supports background operation (BGO), allowing program execution from code flash during data flash rewrites. Voltage requirements for data flash programming are VDD = 1.8 V to 5.5 V, enabling reliable operation across wide input ranges without auxiliary charge pumps or external regulators.
What package type and pin count does the R5F101MJAFA#10 use, and is it RoHS compliant?
The R5F101MJAFA#10 uses an 80-pin LQFP package with 0.65-mm pitch (14 × 14 mm body), designated by the "FA" suffix in its part number. It is RoHS-compliant and qualified for industrial temperature operation (-40°C to +85°C). The package supports standard reflow soldering profiles and is compatible with automated assembly processes used in high-volume manufacturing.
How many analog-to-digital converter (ADC) channels does the R5F101MJAFA#10 support, and what resolution and references are available?
The R5F101MJAFA#10 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It supports internal reference voltages including a factory-calibrated 1.45 V reference and an on-chip temperature sensor. External reference inputs (AVREFP/AVREFM) allow ratiometric measurements, and the ADC operates across the full 1.6 V to 5.5 V supply range-ensuring accuracy in varying power conditions.
What low-power modes are supported by the R5F101MJAFA#10, and what is the typical current consumption in each?
The R5F101MJAFA#10 supports HALT (66 μA/MHz), STOP (0.57 μA with RTC and LVD active), and SNOOZE modes. In STOP mode, only the RTC and low-voltage detector remain powered-enabling multi-year battery life in always-on monitoring applications. SNOOZE mode allows selected peripherals (e.g., UART, ADC) to operate autonomously while the CPU sleeps, reducing average system current without sacrificing responsiveness.
R5F101MJAFA#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/G13
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 64
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 17x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101MJAFA#10 FAQ
1.How can I place an order for R5F101MJAFA#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101MJAFA#10 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 R5F101MJAFA#10 reliable?
The price and inventory of R5F101MJAFA#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101MJAFA#10 is usually 5 days.
3.What payment methods are accepted for R5F101MJAFA#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101MJAFA#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101MJAFA#10?
R5F101MJAFA#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101MJAFA#10 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 R5F101MJAFA#10?
For technical support, including R5F101MJAFA#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101MJAFA#10 requirements.
6.How does Aetrix verify that R5F101MJAFA#10 is sourced from the original manufacturer or authorized distributors?
All R5F101MJAFA#10 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 R5F101MJAFA#10 meets industry standards.
7.What is the process for return or replacement of R5F101MJAFA#10?
All R5F101MJAFA#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101MJAFA#10, 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 R5F101MJAFA#10 part is unused and in its original packaging.
Return procedure for R5F101MJAFA#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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