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Renesas R5F100MJAFB#X0
- Part No.:
- R5F100MJAFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F100MJAFB#X0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,066
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Product details
Overview
R5F100MJAFB#X0 from Renesas is an RL78/G13 8-bit microcontroller with 192 KB code flash, 8 KB data flash, and 16 KB RAM, operating at up to 32 MHz with 41 DMIPS performance. It features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), 52-pin LFQFP-0.5mm package, and integrated peripherals including 10-bit ADC (26 channels), RTC, UART/LIN, I²C, and 16-bit timers - deployed in battery-powered industrial sensors and smart metering systems.
For engineers reviewing the R5F100MJAFB#X0 datasheet, R5F100MJAFB#X0 pinout, R5F100MJAFB#X0 application, or R5F100MJAFB#X0 equivalent, key selection considerations include its 52-pin LFQFP footprint, -40°C to +105°C industrial temperature grade (G), 1.6–5.5 V supply range, and support for background data flash rewriting with 1M-cycle endurance.
Technical Context
The R5F100MJAFB#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 dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, selectable 1–32 MHz) and dedicated low-speed oscillator for watchdog and RTC.
Peripherals are organized into functional groups: 3× I²C/Simplified I²C interfaces, 2× UART/LIN channels, 2× CSI (SPI-compatible) channels, 16× 16-bit timer channels, and a 12-bit interval timer. Memory subsystem includes separate code flash (192 KB, 1 KB blocks), data flash (8 KB, BGO-capable), and SRAM (16 KB), all accessible under single-supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 8-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Clock Speed | 32 MHz - delivers 41 DMIPS for real-time control tasks |
| Flash Memory | 192 KB code flash (1 KB erase blocks) with security lock and self-programming |
| Data Flash | 8 KB with background operation (BGO) and 1,000,000 write cycles (TYP) |
| RAM | 16 KB on-chip SRAM - sufficient for RTOS stacks and protocol buffers |
| ADC | 10-bit resolution, 26-channel input, internal 1.45 V reference and temperature sensor |
| Supply Voltage | 1.6 V to 5.5 V - enables direct interface with 1.8/2.5/3.3/5 V logic and sensors |
| Operating Temp | -40°C to +105°C (industrial G-grade) - qualified for harsh environmental deployment |
Pinout & Package
Package: 52-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports 1.6–5.5 V operation |
| P00–P07 | General-purpose I/O port | Configurable as N-ch open-drain (6 V tolerant), TTL input, or pull-up; supports different-potential interfacing |
| P10/P11 | SPI/I²C/UART multiplexed pins | Shared SCK00/SCL00 and SI00/RxD0/SDA00 - enables compact peripheral co-location |
| P20–P27 | Analog input channels (ANI0–ANI7) | Part of 26-channel ADC group; P20/P21 also serve AVREFP/AVREFM for precision measurement |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits |
| CLKP/CLKM | Crystal oscillator inputs | Supports 32.768 kHz crystal for RTC; optional external main clock up to 20 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power modes | HALT (0.57 μA), STOP (0.94 μA), and SNOOZE (fast wake-up from peripheral events) |
| Self-programming flash | Boot swap and flash shield window enable secure firmware updates without external programmer |
| Background data flash rewrite | Execute code from flash while writing data flash - critical for logging during runtime |
| Integrated safety functions | On-chip LVD (14 voltage levels), WDT with independent low-speed clock, and POR |
| Multiprotocol serial interface | Hardware UART/LIN, I²C, and CSI (SPI-compatible) on shared pins - reduces PCB routing complexity |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - eliminates need for external RTC IC |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Bidirectional energy monitoring in DIN-rail mounted meters with tamper detection and time-of-use billing. IC Role / Device Role / Timing Role: Main controller managing metrology ADC sampling, RTC-based tariff switching, LIN communication with display module, and secure flash storage of consumption logs. Use Value: 192 KB flash stores multiple firmware images and encryption keys; 8 KB data flash retains 10+ years of hourly consumption data with BGO. |
Use Scenario: Wireless vibration/temperature node in predictive maintenance systems with battery life >5 years. IC Role / Device Role / Timing Role: Low-power system orchestrator sampling analog sensors via 10-bit ADC, processing FFT in RAM, and transmitting via UART-to-LoRa bridge. Use Value: 0.57 μA STOP mode extends battery life; RTC alarm wakes MCU only for scheduled measurements - no external wake-up circuit needed. |
| Home Appliance Control | Building Automation Panel |
|
Use Scenario: Washing machine main board requiring motor control, user interface, and fault diagnostics. IC Role / Device Role / Timing Role: Central MCU driving triac-based heater control, reading front-panel buttons via key interrupt, and communicating with display via I²C. Use Value: On-chip BCD correction simplifies timer-driven display updates; 26 ADC channels monitor thermistors, current sense, and water level sensors. |
Use Scenario: HVAC zone controller with occupancy sensing, temperature setpoint adjustment, and Modbus RTU gateway. IC Role / Device Role / Timing Role: Protocol translator between local sensors (I²C), user interface (GPIO), and RS-485 Modbus (UART with hardware LIN support). Use Value: Dual UART channels allow simultaneous Modbus master/slave operation; 16 KB RAM accommodates Modbus register map and stack buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101MJAFB#X0 | No data flash (0 KB); identical core, peripherals, and package | Not suitable for field-upgradable firmware or persistent data logging | Select when boot code is immutable and no runtime parameter storage is required |
| R5F100LJAFB#X0 | 64-pin LQFP, 128 KB flash, 8 KB data flash, 12 KB RAM | Higher I/O count and memory for complex HMI or multi-sensor fusion | Choose when additional GPIO, timers, or larger code space justifies larger footprint and cost |
Compared with R5F100MJAFB#X0, R5F101MJAFB#X0 removes data flash to reduce cost and die size but sacrifices field update capability, while R5F100LJAFB#X0 trades pin count and package size for expanded memory and I/O - making R5F100MJAFB#X0 optimal for balanced 52-pin industrial control where data persistence and moderate resource scaling are essential.
Availability
R5F100MJAFB#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across extended product lifecycles.
Supply support for R5F100MJAFB#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 automotive, industrial, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose applications - designed to replace legacy 8-bit MCUs with enhanced integration, security, and energy efficiency for industrial and consumer equipment.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F100MJAFB#X0?
The R5F100MJAFB#X0 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 in this mode, enabling responsive real-time control in applications such as motor commutation and sensor fusion. The core maintains full functionality across the entire 1.6–5.5 V supply range.
Does the R5F100MJAFB#X0 support in-system programming and secure firmware updates?
Yes, the R5F100MJAFB#X0 supports full in-system programming via its on-chip debug interface and includes boot swap functionality plus a flash shield window to protect critical code sections. These features allow safe over-the-air or field firmware updates without exposing bootloader or cryptographic keys - a key requirement for certified industrial and energy products.
How many analog input channels does the R5F100MJAFB#X0 provide, and what ADC resolution is supported?
The R5F100MJAFB#X0 integrates a 10-bit successive approximation ADC with up to 26 analog input channels (ANI0–ANI25). It includes an internal 1.45 V reference voltage and a calibrated temperature sensor - both usable simultaneously with external channel sampling. Resolution remains stable across the full 1.6–5.5 V VDD range.
What low-power modes are available on the R5F100MJAFB#X0, and what are their typical current draws?
The R5F100MJAFB#X0 offers HALT mode (0.57 μA, RTC + LVD active), STOP mode (0.94 μA, RTC + LVD + RAM retention), and SNOOZE mode (fast wake-up from serial or timer events). All modes retain RAM content and support wake-up via external interrupt, RTC alarm, or peripheral request - enabling sub-microamp average current in battery-operated deployments.
Is the R5F100MJAFB#X0 pin-compatible with other RL78/G13 variants in the same package?
Yes, the R5F100MJAFB#X0 is pin-compatible with all other RL78/G13 devices in the 52-pin LFQFP-0.5mm package (e.g., R5F100LJAFB#X0, R5F100KJAFB#X0), sharing identical pin functions, electrical characteristics, and thermal behavior. This allows flexible memory/peripheral scaling within the same PCB layout - provided software accounts for differing flash/RAM sizes and peripheral enable states.
R5F100MJAFB#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/G13
- Packaging:
- Bulk
- 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:
- 8K x 8
- 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:
R5F100MJAFB#X0 FAQ
1.How can I place an order for R5F100MJAFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F100MJAFB#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 R5F100MJAFB#X0 reliable?
The price and inventory of R5F100MJAFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100MJAFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F100MJAFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F100MJAFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F100MJAFB#X0?
R5F100MJAFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F100MJAFB#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 R5F100MJAFB#X0?
For technical support, including R5F100MJAFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100MJAFB#X0 requirements.
6.How does Aetrix verify that R5F100MJAFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F100MJAFB#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 R5F100MJAFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F100MJAFB#X0?
All R5F100MJAFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100MJAFB#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 R5F100MJAFB#X0 part is unused and in its original packaging.
Return procedure for R5F100MJAFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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