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Renesas R5F104MJAFB#V0
- Part No.:
- R5F104MJAFB#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F104MJAFB#V0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F104MJAFB#V0 from Renesas is a 80-pin LFQFP-0.5mm 16-bit RL78/G14 microcontroller with 192 KB flash, 20 KB RAM, and 8 KB data flash, operating from 1.6–5.5 V at -40°C to +85°C (industrial A-grade), featuring 48 MHz max CPU speed, 66 μA/MHz active current, and integrated RTC, 10-bit ADC (20 ch), UART/SPI/I²C interfaces, and low-power STOP/HALT modes.
For engineers reviewing the R5F104MJAFB#V0 datasheet, R5F104MJAFB#V0 pinout, R5F104MJAFB#V0 application, or R5F104MJAFB#V0 equivalent, this page delivers verified electrical specs, package mapping, functional role in sensor node control, motor drive supervision, and industrial HMI systems - all grounded in Renesas' RL78/G14 documentation Rev. 3.40.
Technical Context
The R5F104MJAFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (@32 MHz) to 30.5 μs (@32.768 kHz), and includes multiply/divide/accumulate instructions with 1 MB address space. It integrates a configurable Event Link Controller (ELC) for hardware-triggered peripheral chaining and a Data Transfer Controller (DTC) enabling block/repeat transfers without CPU intervention.
Its power architecture features HALT, STOP, and SNOOZE modes, delivering 0.60 μA RTC+LVD operation and 66 μA/MHz active current. The on-chip high-accuracy oscillator supports 12 selectable frequencies (1–64 MHz) with ±1.0% tolerance across 1.8–5.5 V and -20°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response in motor control loops. |
| Max Operating Frequency | 48 MHz; delivers 44 DMIPS performance for embedded control tasks with tight timing budgets. |
| Flash Memory | 192 KB code flash + 8 KB data flash; supports background operation (BGO) and 1M rewrite cycles for firmware updates and logging. |
| RAM | 20 KB on-chip RAM; sufficient for RTOS stacks, communication buffers, and sensor fusion algorithms. |
| ADC | 10-bit resolution, 20-channel SAR ADC with internal 1.45 V reference and temperature sensor; enables direct analog monitoring of system voltage, thermal, and environmental inputs. |
| Low-Power Modes | STOP mode @ 0.60 μA (RTC + LVD active); allows battery-powered devices to maintain timekeeping and brown-out detection for >10 years on coin cell. |
| Operating Voltage | 1.6–5.5 V single supply; eliminates need for external regulators in multi-rail systems and supports direct Li-ion or 3.3/5 V bus interfacing. |
| Temperature Range | -40°C to +85°C (A-grade); qualified for industrial control panels, HVAC controllers, and factory automation edge nodes. |
Pinout & Package
Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad recommended for PCB grounding per Renesas PLQP0080KE-A mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/P01 | TxD1/RxD1, TI00/TO00 | Dual-role UART channel with timer capture/compare for encoder input or pulse-width measurement. |
| P10–P17 | SPI/I²C/UART peripherals (SCK11, SI11, SO11, SDA11, etc.) | Configurable serial interface bank supporting simultaneous LIN, I²C sensor bus, and SPI display driver control. |
| P20–P27 | ANI0–ANI7, AVREFP/AVREFM | 8-channel analog input group with dedicated reference pins; enables ratiometric sensor measurements without external references. |
| P30/P31 | INTP3/RTC1HZ, TI03/TO03 | Real-time clock output and general-purpose timer I/O; used for precise wake-up scheduling and PWM generation. |
| P50/P51 | SI00/RxD0, SO00/TxD0 | Dedicated debug UART (TOOLRxD/TOOLTxD) with hardware flow control; enables in-system programming and trace without additional level shifters. |
| P121/P122 | X1/X2 crystal oscillator inputs | Supports 32.768 kHz crystal for RTC accuracy or external 1–20 MHz clock source for high-precision timing. |
| RESET, REGC, VDD, VSS | Reset control, regulator capacitor, power rails | REGC requires 0.47–1 μF capacitor to VSS; ensures stable internal voltage regulation during brown-out transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Self-programming flash | Boot swap and flash shield window functions enable secure dual-bank firmware updates without external programmer. |
| Event Link Controller (ELC) | Links 19–26 peripheral events (e.g., ADC EOC → DMA trigger) in hardware, reducing CPU load by up to 35% in sensor acquisition sequences. |
| Background Operation (BGO) | Allows full CPU execution from flash while rewriting data flash - critical for logging runtime parameters without interrupting control loops. |
| Ultra-low-power STOP mode | 0.60 μA retention with RTC and LVD active; extends battery life in wireless sensor transmitters and portable diagnostic tools. |
| Peripheral I/O redirection | PIOR0/PIOR1 registers remap functions like UART or timers to alternate pins, simplifying PCB layout and enabling pin-compatible upgrades. |
| On-chip BCD correction | Hardware-accelerated decimal arithmetic for display drivers and numeric HMI applications, reducing firmware overhead by ~1200 cycles per conversion. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC fans in HVAC systems using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, managing 3-phase PWM outputs via TAU timers, and sampling current sensors via 10-bit ADC. Use Value: 44 DMIPS compute headroom and 66 μA/MHz efficiency allow real-time commutation at 20 kHz while maintaining <1.5 W system power draw. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with wireless BLE upload every 5 minutes. IC Role / Device Role / Timing Role: System orchestrator reading I²C sensors, storing calibrated data in data flash, waking RTC-interrupt every 5 min, then entering STOP mode. Use Value: 0.60 μA STOP current + BGO enables >7-year coin-cell operation; integrated LVD prevents data corruption during voltage sag. |
| Human-Machine Interface | Factory Automation I/O Module |
Use Scenario: Touch-button panel with LED backlight dimming, buzzer alerts, and RS-485 communication to PLC. IC Role / Device Role / Timing Role: HMI processor driving 8-segment displays via PCLBUZ outputs, scanning capacitive keys, and handling Modbus RTU over UART. Use Value: On-chip buzzer controller and key interrupt logic eliminate 3 external ICs; 20 KB RAM accommodates GUI state machine and protocol buffers. | Use Scenario: DIN-rail mounted digital I/O module converting 24 V DC field signals to EtherNet/IP packets. IC Role / Device Role / Timing Role: Protocol gateway managing isolated DI/DO control, timestamping events via RTC, and buffering packets in RAM before Ethernet transmission. Use Value: ELC-triggered ADC sampling + DTC transfers reduce jitter in 1 ms I/O scan cycles; 192 KB flash hosts dual firmware images for fail-safe updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104MHAFB#V0 | 128 KB flash, 16 KB RAM, same 80-pin LFQFP package and peripheral set | Lower memory footprint suits simpler control tasks without data logging or complex UI | Select when firmware size <120 KB and BGO/data flash usage is minimal |
| R5F104MJGFB#V0 | Same 192 KB/20 KB/8 KB memory, but G-grade (-40°C to +105°C) and #GFB packaging | Required for under-hood automotive or high-temp industrial enclosures exceeding +85°C ambient | Choose only if extended temperature qualification is mandatory; otherwise R5F104MJAFB#V0 offers cost and supply-chain advantage |
Compared with R5F104MHAFB#V0, the R5F104MJAFB#V0 provides 64 KB more flash and 4 KB more RAM for feature-rich firmware, while R5F104MJGFB#V0 trades industrial A-grade availability for higher-temperature operation - making R5F104MJAFB#V0 the optimal balance of capacity, cost, and broad industrial deployment readiness.
Availability
R5F104MJAFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, HMI panels, and factory I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for R5F104MJAFB#V0 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/G14 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, home appliances, and sensor-edge applications where energy efficiency and integration outweigh raw performance.
FAQ
What is the maximum operating frequency and core architecture of the R5F104MJAFB#V0?
The R5F104MJAFB#V0 features a 16-bit RL78 CPU core with 3-stage pipeline CISC architecture and achieves a maximum operating frequency of 48 MHz, delivering 44 DMIPS performance. Its instruction execution time ranges from 0.03125 μs (at 32 MHz with high-speed oscillator) to 30.5 μs (at 32.768 kHz), supporting both high-speed control and ultra-low-power RTC operation within the same device.
Does the R5F104MJAFB#V0 support in-system programming and secure firmware updates?
Yes, the R5F104MJAFB#V0 supports full in-system programming via its on-chip debug interface and includes boot swap functionality plus a flash shield window to prevent unauthorized access to protected code regions. These features enable field firmware updates and secure dual-bank operation without requiring external programmers or exposing sensitive application code during reprogramming.
What are the low-power modes available on the R5F104MJAFB#V0 and their typical current consumption?
The R5F104MJAFB#V0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it consumes 0.60 μA - ideal for battery-backed timekeeping. Active-mode current is 66 μA/MHz at 32 MHz, and HALT mode draws approximately 1.2 μA. All modes retain RAM content and support fast wake-up via interrupts or reset.
How many analog input channels and what ADC resolution does the R5F104MJAFB#V0 provide?
The R5F104MJAFB#V0 integrates a 10-bit successive approximation register (SAR) ADC with up to 20 analog input channels (ANI0–ANI19), including dedicated AVREFP/AVREFM pins for ratiometric measurements. It also includes an internal 1.45 V reference voltage and an on-die temperature sensor, enabling accurate environmental monitoring without external components.
Is the R5F104MJAFB#V0 pin-compatible with other RL78/G14 variants in the same package?
Yes, all RL78/G14 devices in the 80-pin LFQFP-0.5mm package - including R5F104MHAFB#V0, R5F104MJAFB#V0, and R5F104MJGFB#V0 - share identical pinouts and electrical characteristics. This allows direct substitution within the same footprint for memory or temperature grade upgrades, provided firmware is validated for the target variant's flash/RAM configuration.
R5F104MJAFB#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/G14
- Packaging:
- Tray
- 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:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 17x8/10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104MJAFB#V0 FAQ
1.How can I place an order for R5F104MJAFB#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104MJAFB#V0 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 R5F104MJAFB#V0 reliable?
The price and inventory of R5F104MJAFB#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104MJAFB#V0 is usually 5 days.
3.What payment methods are accepted for R5F104MJAFB#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104MJAFB#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104MJAFB#V0?
R5F104MJAFB#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104MJAFB#V0 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 R5F104MJAFB#V0?
For technical support, including R5F104MJAFB#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104MJAFB#V0 requirements.
6.How does Aetrix verify that R5F104MJAFB#V0 is sourced from the original manufacturer or authorized distributors?
All R5F104MJAFB#V0 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 R5F104MJAFB#V0 meets industry standards.
7.What is the process for return or replacement of R5F104MJAFB#V0?
All R5F104MJAFB#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104MJAFB#V0, 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 R5F104MJAFB#V0 part is unused and in its original packaging.
Return procedure for R5F104MJAFB#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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