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Renesas R5F101MJAFA#30
- Part No.:
- R5F101MJAFA#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F101MJAFA#30.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,167
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Product details
Overview
R5F101MJAFA#30 from Renesas is a 80-pin LQFP-0.65mm, 16-bit RL78/G13 microcontroller with 128 KB flash memory, 12 KB RAM, and no data flash. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD). It targets battery-powered industrial control panels requiring deterministic real-time response and long-term firmware stability.
For engineers reviewing the R5F101MJAFA#30 datasheet, R5F101MJAFA#30 pinout, R5F101MJAFA#30 application, or R5F101MJAFA#30 equivalent, key selection criteria include its 80-pin LQFP package, absence of on-chip data flash, industrial-grade temperature range (−40°C to +85°C), integrated 10-bit ADC (26 channels), RTC with calendar/alarm, and dual UART/LIN support for sensor node communication.
Technical Context
The R5F101MJAFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs min @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a 12-bit interval timer, real-time clock with calendar and correction, and watchdog timer driven by dedicated low-speed oscillator.
Its peripheral set includes up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 16× 16-bit timers, 3× I²C/Simplified I²C interfaces, 2× UART/LIN channels, and 2× CSI (SPI-compatible) serial interfaces - all accessible via 64 general-purpose I/O pins with N-ch open-drain capability and 1.8/2.5/3.0 V interface support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline and variable instruction timing |
| Max Operating Frequency | 32 MHz - delivers 41 DMIPS for deterministic real-time control loops |
| Flash Memory | 128 KB code flash - sufficient for complex firmware with bootloader and OTA update space |
| RAM | 12 KB on-chip RAM - supports multitasking RTOS and buffer-intensive protocols |
| ADC Resolution & Channels | 10-bit resolution, 26 analog inputs - enables simultaneous monitoring of multiple sensors |
| Operating Voltage Range | 1.6 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V, and 5 V legacy systems |
| Temperature Range | −40°C to +85°C - qualified for industrial ambient environments without derating |
Pinout & Package
Package: 80-pin LQFP (14 × 14 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial Clock Input/Output | Shared SPI clock (CSI0) or I²C clock - enables dual-protocol peripheral interfacing |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial Data Input / UART RX / I²C Data | Multi-function pin supporting SPI input, UART receive, debug tool interface, and I²C data line |
| P20/ANI0/AVREFP | Analog Input 0 / ADC Reference Positive | Primary analog channel with selectable external reference voltage source for precision measurement |
| P21/ANI1/AVREFM | Analog Input 1 / ADC Reference Negative | Differential reference pair with ANI0 - enables ratiometric sensing and noise rejection |
| P30/INTP0/RTCCLK | External Interrupt 0 / RTC Clock Input | Accepts 32.768 kHz crystal or external clock for calendar-mode RTC operation |
| P50/CLKP/XT1 | System Clock Input / Crystal Oscillator Terminal | Connects to high-speed crystal (e.g., 32 MHz) for main system clock generation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-1 μA retention current in STOP mode - extends battery life in remote sensors |
| On-chip RTC with calendar and alarm | 99-year calendar, automatic leap-year correction, and wake-up interrupt - eliminates external RTC IC |
| Background operation of data flash | Allows program execution during flash rewrite - critical for field-upgradable firmware without halting operation |
| Integrated LIN bus support in UART | Hardware LIN 2.2/SAE J2602 compliance - reduces BOM cost in automotive body electronics |
| Self-programming with boot swap | Enables safe dual-bank firmware updates - prevents bricking during over-the-air upgrades |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
|
Use Scenario: Local operator interface for PLC-controlled HVAC systems with touch buttons, LED indicators, and RS-485 connectivity. IC Role / Device Role / Timing Role: Main controller executing UI logic, reading GPIO inputs, driving segment displays, and managing Modbus RTU over UART. Use Value: 64 GPIOs support direct button/LED matrix; 2× UARTs enable simultaneous debug port and fieldbus; 128 KB flash accommodates graphics library and localization assets. |
Use Scenario: Residential electricity meter with pulse counting, tamper detection, and infrared/RF communication. IC Role / Device Role / Timing Role: System-on-chip handling metrology ADC sampling, time-of-use billing calculation, RTC-based tariff switching, and IRDA physical layer. Use Value: Integrated 10-bit ADC with 26 channels reads shunt/CT sensors; RTC calendar ensures accurate billing cycles; ultra-low STOP mode preserves clock during power loss. |
| Wireless Sensor Node | Appliance Motor Control |
|
Use Scenario: Battery-powered environmental monitor (temp/humidity/CO₂) transmitting data via BLE module over UART. IC Role / Device Role / Timing Role: Sensor aggregator and protocol bridge - reads I²C sensors, formats packets, and manages UART-to-BLE handoff. Use Value: 3× I²C interfaces connect multiple sensors; SNOOZE mode allows periodic wake-up for sampling; 1.6 V minimum supply supports aging alkaline batteries. |
Use Scenario: Brushless DC motor driver in washing machine with hall-effect feedback, current sensing, and user interface. IC Role / Device Role / Timing Role: Real-time motion controller generating PWM waveforms, processing hall sensor edges, and updating display status. Use Value: 16× 16-bit timers provide precise PWM phase alignment; 26-channel ADC samples current/voltage simultaneously; 41 DMIPS handles FOC math within 50 μs loop time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101MJAFB#30 | Same core, memory, and peripherals but in 80-pin LFQFP (0.5-mm pitch) package | Requires PCB redesign due to different footprint and thermal pad layout | Select when higher board density or improved thermal performance is required |
| R5F101MLAFA#30 | Identical package and pinout, but with 512 KB flash and 32 KB RAM | Over-spec'd memory for same footprint - suitable for future firmware expansion | Select when anticipating feature growth or dual-application consolidation |
Compared with R5F101MJAFA#30, R5F101MJAFB#30 offers identical functionality in a denser package requiring layout change, while R5F101MLAFA#30 provides scalable memory headroom without altering hardware design - enabling seamless firmware evolution in fixed-form-factor products.
Availability
R5F101MJAFA#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, wireless sensor nodes, and appliance motor controllers requiring stable component supply across multi-year production cycles.
Supply support for R5F101MJAFA#30 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 family is designed for cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency in compact packages.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating of the R5F101MJAFA#30?
The R5F101MJAFA#30 operates at up to 32 MHz and delivers 41 DMIPS (Dhrystone MIPS) under standard test conditions. This performance level supports real-time control algorithms, protocol stacks like Modbus or LIN, and basic GUI rendering in resource-constrained industrial devices - all while maintaining the RL78's hallmark low-power efficiency.
Does the R5F101MJAFA#30 include on-chip data flash memory?
No, the R5F101MJAFA#30 does not include on-chip data flash memory. The "101" in the part number explicitly denotes zero data flash (per Renesas' RL78/G13 naming convention), distinguishing it from "100" variants that include 4–8 KB. Firmware must use code flash with wear-leveling or external EEPROM for non-volatile parameter storage.
What is the operating temperature range certified for the R5F101MJAFA#30?
The R5F101MJAFA#30 is rated for −40°C to +85°C ambient operation, qualifying it for industrial applications (designated by "D" suffix in Renesas' ordering nomenclature). It does not support the extended −40°C to +105°C range offered by "G"-grade variants, and thermal derating is not required within its specified range.
Which serial communication interfaces are supported by the R5F101MJAFA#30?
The R5F101MJAFA#30 supports three interface types: up to 3× I²C/Simplified I²C channels, 2× UART/LIN channels (with hardware LIN 2.2 support), and up to 2× CSI (SPI-compatible) interfaces. All are independently configurable and share no mandatory pin conflicts, enabling concurrent use of I²C sensors, UART-based BLE modules, and SPI displays.
How many analog input channels and what ADC resolution does the R5F101MJAFA#30 provide?
The R5F101MJAFA#30 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It includes an internal 1.45 V reference voltage and supports differential input mode using AVREFP/AVREFM pins - enabling high-accuracy ratiometric measurements essential for precision sensor conditioning in industrial instrumentation.
R5F101MJAFA#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/G13
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
R5F101MJAFA#30 FAQ
1.How can I place an order for R5F101MJAFA#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101MJAFA#30 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#30 reliable?
The price and inventory of R5F101MJAFA#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101MJAFA#30 is usually 5 days.
3.What payment methods are accepted for R5F101MJAFA#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101MJAFA#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101MJAFA#30?
R5F101MJAFA#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101MJAFA#30 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#30?
For technical support, including R5F101MJAFA#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101MJAFA#30 requirements.
6.How does Aetrix verify that R5F101MJAFA#30 is sourced from the original manufacturer or authorized distributors?
All R5F101MJAFA#30 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#30 meets industry standards.
7.What is the process for return or replacement of R5F101MJAFA#30?
All R5F101MJAFA#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101MJAFA#30, 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#30 part is unused and in its original packaging.
Return procedure for R5F101MJAFA#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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