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Renesas R5F101MJAFB#X0
- Part No.:
- R5F101MJAFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F101MJAFB#X0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,883
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Product details
Overview
R5F101MJAFB#X0 from Renesas is an RL78/G13 80-pin, 256 KB flash, 8 KB data flash, 16 KB RAM ultra-low-power 16-bit MCU with integrated RTC, 10-bit ADC (26 channels), and multiple serial interfaces (UART, I²C, CSI), designed for battery-powered industrial control and sensor node applications operating from 1.6 V to 5.5 V.
For engineers reviewing the R5F101MJAFB#X0 datasheet, R5F101MJAFB#X0 pinout, R5F101MJAFB#X0 application, or R5F101MJAFB#X0 equivalent, key selection criteria include its 0.57 μA STOP mode current, 41 DMIPS @ 32 MHz performance, LFQFP-80 (12 × 12 mm, 0.5 mm pitch) package, and support for LIN-bus UART and background data flash rewriting.
Technical Context
The R5F101MJAFB#X0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates a 12-bit interval timer, real-time clock with calendar/alarm, and watchdog timer with dedicated low-speed oscillator.
Its peripheral set includes up to 16 channels of 16-bit timers, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN channels, 2–8 CSI channels, and DMA controller with 4 channels-enabling concurrent data movement while executing code from flash memory during background data flash operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Max Operating Frequency | 32 MHz - delivers 41 DMIPS for deterministic real-time control |
| Flash Memory | 256 KB code flash - supports block erase (1 KB), self-programming, and boot swap |
| Data Flash | 8 KB - enables 1,000,000 write cycles with background operation (BGO) |
| RAM | 16 KB on-chip RAM - used for stack, variables, and flash library operations (start address FAF00H) |
| Power Consumption | 0.57 μA in STOP mode (RTC + LVD active) - extends battery life in always-on sensing |
| Analog Peripherals | 10-bit ADC with 26 input channels and internal 1.45 V reference - supports multi-sensor acquisition without external references |
| Operating Voltage | 1.6 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V, and 5 V systems |
Pinout & Package
Package: LFQFP-80 (12 × 12 mm, 0.50-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support noise isolation; VDD accepts 1.6–5.5 V directly |
| P10/SCK00/SCL00 | Port 10 / SPI clock / I²C clock | Multi-function pin enabling hardware SPI or I²C master/slave on same signal |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Port 11 / SPI input / UART receive / debug RX / I²C data | Shared debug interface (TOOLRxD) eliminates need for separate SWD/JTAG pins |
| P20/ANI0/AVREFP | Analog input 0 / ADC reference positive | Configurable as analog input or precision ADC reference source |
| P21/ANI1/AVREFM | Analog input 1 / ADC reference negative | Enables differential ADC measurements or ratiometric sensor reads |
| XT1/XT2 | Crystal oscillator input/output | Supports 32.768 kHz crystal for RTC accuracy ±20 ppm over –40°C to +105°C |
| RESET | Active-low reset input | Accepts external reset or internal POR/LVD assertion; debounced internally |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC and LVD active - enables decade-long battery life in metering |
| Background data flash rewrite | Execute code from program memory while updating 8 KB data flash - no firmware interruption |
| Integrated LIN-capable UART | Hardware LIN bus support (ISO 17987) on UART channels - reduces BOM for automotive body electronics |
| On-chip temperature sensor | Calibrated sensor with ±2°C accuracy - enables thermal compensation without external ICs |
| High-accuracy on-chip oscillator | ±1.0% over 1.8–5.5 V and –20 to +85°C - eliminates external crystal in cost-sensitive designs |
| DMA with 2-clock transfer | 2-cycle transfers between SFR and RAM - minimizes CPU load for high-throughput sensor streaming |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered gas/water meter with pulse counting, RTC timestamping, and wireless reporting. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC, real-time clock, secure flash logging, and sub-GHz RF interface timing. Use Value: 0.57 μA STOP mode enables >10-year battery life; 26-channel ADC supports multi-sensor calibration; BGO allows firmware updates without interrupting measurement cycles. |
Use Scenario: DIN-rail mounted environmental monitor measuring temperature, humidity, and CO₂ via I²C sensors. IC Role / Device Role / Timing Role: Central data aggregator with UART-to-RS485 bridge, RTC-synchronized logging, and LIN-compatible diagnostics port. Use Value: Integrated LIN UART simplifies service interface; 8 KB data flash stores 30+ days of timestamped sensor history; 1.6 V operation ensures reliability during brownout conditions. |
| Home Appliance Control | Medical Wearable |
Use Scenario: Smart washing machine control board managing motor drivers, water level sensing, and user interface. IC Role / Device Role / Timing Role: Real-time motor timing controller with PWM generation, fault monitoring, and touch-button scanning. Use Value: 16-bit timers with dead-time insertion enable precise BLDC commutation; N-ch open-drain I/O drives LED indicators directly; 5.5 V tolerance simplifies 5 V rail interfacing. |
Use Scenario: ECG patch with analog front-end, motion sensing, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal conditioning and event-triggered data capture unit synchronizing ADC sampling with motion-interrupt wakeups. Use Value: 10-bit ADC with internal reference eliminates external voltage reference; SNOOZE mode reduces average current during idle; 32 KB flash headroom supports future OTA feature expansion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101MJAFB#V0 | Identical silicon; differs only in packaging - tray vs. embossed tape | No functional difference; #V0 intended for manual prototyping or small-batch assembly | Select #X0 for automated SMT line feed; choose #V0 for hand-solder evaluation or low-volume builds |
| R5F101LJAFB#X0 | Same package and family, but 192 KB flash / 16 KB RAM / 8 KB data flash | Lower memory configuration - suitable when firmware footprint < 192 KB and BGO not required | Choose R5F101LJAFB#X0 to reduce cost where full 256 KB flash and 8 KB data flash are unused |
Compared with R5F101MJAFB#X0, the #V0 variant offers identical functionality in tray packaging for flexibility in low-volume workflows, while R5F101LJAFB#X0 provides a cost-optimized alternative with reduced memory resources-both preserving pin compatibility, peripheral set, and ultra-low-power behavior.
Availability
R5F101MJAFB#X0 is available at Aetrix Electronics and suitable for smart energy metering, industrial sensor nodes, and home appliance control requiring stable component supply across extended product lifecycles.
Supply support for R5F101MJAFB#X0 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, and power solutions for industrial, automotive, and IoT markets.
The RL78/G13 product line targets cost-sensitive, ultra-low-power embedded applications demanding high integration, long battery life, and robust industrial temperature operation (–40°C to +105°C).
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101MJAFB#X0?
The R5F101MJAFB#X0 operates at up to 32 MHz, delivering 41 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator, which maintains ±1.0% accuracy across 1.8–5.5 V and –20 to +85°C. The R5F101MJAFB#X0 sustains this speed while consuming just 66 μA/MHz in active mode, making it suitable for responsive real-time control in power-constrained systems.
Does the R5F101MJAFB#X0 include data flash memory, and what are its endurance and voltage requirements?
Yes, the R5F101MJAFB#X0 includes 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical). It supports background operation (BGO), allowing code execution from program memory during rewrites. Data flash programming operates across the full VDD range of 1.8 V to 5.5 V, eliminating the need for auxiliary voltage regulation during field updates - a key capability confirmed in the R01DS0131EJ0380 datasheet.
What package type and pin count does the R5F101MJAFB#X0 use, and is it RoHS-compliant?
The R5F101MJAFB#X0 uses an 80-pin LFQFP package (12 × 12 mm, 0.50-mm pitch), identified by the "FB" suffix per Renesas' part numbering scheme. It is RoHS-compliant and moisture sensitivity level 3. The "#X0" suffix indicates embossed tape packaging optimized for automated SMT placement - consistent with Renesas' standard shipping format for high-volume manufacturing.
How does the R5F101MJAFB#X0 support low-power operation in battery-powered applications?
The R5F101MJAFB#X0 achieves ultra-low-power operation via multiple hardware modes: HALT (1.2 μA), STOP (0.57 μA with RTC + LVD active), and SNOOZE (fast wake-up with partial peripheral retention). Its 1.6 V minimum operating voltage, programmable low-voltage detector (14 levels), and RTC with calendar/alarm enable decades-long operation on coin cells - validated for industrial temperature range (–40°C to +105°C) in the RL78/G13 datasheet.
Which communication interfaces are integrated into the R5F101MJAFB#X0, and does it support LIN bus?
The R5F101MJAFB#X0 integrates UART (2–4 channels), I²C/Simplified I²C (3–10 channels), and CSI (2–8 channels). UART channels explicitly support LIN bus protocol (ISO 17987), including break detection and sync field generation - confirmed in Section 1.1 Features of the R01DS0131EJ0380 datasheet. No external transceiver is needed for basic LIN node implementation.
R5F101MJAFB#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, 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:
R5F101MJAFB#X0 FAQ
1.How can I place an order for R5F101MJAFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101MJAFB#X0 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 R5F101MJAFB#X0 reliable?
The price and inventory of R5F101MJAFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101MJAFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F101MJAFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101MJAFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101MJAFB#X0?
R5F101MJAFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101MJAFB#X0 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 R5F101MJAFB#X0?
For technical support, including R5F101MJAFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101MJAFB#X0 requirements.
6.How does Aetrix verify that R5F101MJAFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101MJAFB#X0 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 R5F101MJAFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F101MJAFB#X0?
All R5F101MJAFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101MJAFB#X0, 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 R5F101MJAFB#X0 part is unused and in its original packaging.
Return procedure for R5F101MJAFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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