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Renesas R5F104LEAFA#V0
- Part No.:
- R5F104LEAFA#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F104LEAFA#V0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,049
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Product details
Overview
R5F104LEAFA#V0 from Renesas is a 64-pin LQFP-0.65mm, 48 KB flash, 5.5 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with true low-power operation (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in battery-powered industrial sensors and smart metering interfaces.
For engineers reviewing the R5F104LEAFA#V0 datasheet, R5F104LEAFA#V0 pinout, R5F104LEAFA#V0 application, or R5F104LEAFA#V0 equivalent, this page delivers verified electrical specs, package mapping, functional role in real-time control loops, and validated alternative options for cost, power, or peripheral trade-offs.
Technical Context
The R5F104LEAFA#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 and four register banks.
It integrates dual-clock domain operation: high-speed on-chip oscillator (selectable 1–64 MHz, ±1.0% accuracy) for main CPU and peripherals, plus dedicated low-speed oscillator for watchdog and RTC; supports HALT, STOP, and SNOOZE low-power modes with configurable wake-up sources including 19–26 event-linked peripheral triggers via ELC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 4 register banks |
| Max Operating Frequency | 32 MHz - delivers 44 DMIPS for deterministic real-time control tasks |
| Flash Memory | 48 KB code flash - sufficient for firmware with USB HID stack or Modbus RTU protocol |
| Data Flash | 4 KB - supports 1M rewrite cycles for parameter storage without external EEPROM |
| RAM Size | 5.5 KB - accommodates RTOS kernel, communication buffers, and sensor fusion variables |
| Supply Voltage Range | 1.6–5.5 V - enables direct Li-ion (3.0–4.2 V) or 3.3 V/5 V system integration |
| Low-Power Modes | 0.60 μA (RTC+LVD only) - extends 10-year battery life in wireless sensor nodes |
| Analog Peripherals | 10-bit ADC (20 ch), 8-bit DAC (2 ch), 2 comparators - supports closed-loop analog signal conditioning |
Pinout & Package
Package: 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, rated for -40°C to +85°C (A-grade consumer/industrial use).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/P01 | UART1 TX/RX, timer input/output | Primary serial interface for host MCU communication and time-critical I/O triggering |
| P10–P17 | I²C/SPI/UART channels, comparator inputs | Configurable multi-protocol serial interface cluster supporting sensor hub connectivity |
| P20–P27 | ADC inputs (ANI0–ANI7), AVREFP/AVREFM | Dedicated analog front-end with internal reference for precision voltage/current measurement |
| P30/P31 | RTC1HZ, timer I/O, buzzer output | Hardware real-time clock interrupt and audible alert generation without CPU load |
| P60/P61 | I²C SCL/SDA (channel 0) | Standard I²C bus for EEPROM, temperature sensor, or display controller interfacing |
| P121/P122 | Crystal oscillator inputs (X1/X2) | Supports 32.768 kHz crystal for RTC accuracy or 1–20 MHz for precise timing |
| RESET | Active-low reset input | Asynchronous hardware reset with built-in POR and programmable LVD threshold selection |
| VDD/VSS | Power supply pins | Single 1.6–5.5 V rail simplifies power design; REGC capacitor required for internal regulator stability |
Key Features
| Feature | Design Value |
|---|---|
| Self-programmable flash with boot swap | Enables field firmware updates with zero downtime and rollback capability |
| Background data flash rewriting (BGO) | Allows concurrent program execution and non-volatile parameter logging during runtime |
| Event Link Controller (ELC) | Eliminates CPU polling by directly linking 19–26 peripheral events (e.g., ADC end → DMA trigger) |
| On-chip voltage detector (LVD) | 14-level programmable reset/interrupt prevents erratic behavior during brown-out conditions |
| Real-time clock with calendar | 99-year calendar, alarm, and auto-correction supports time-stamped data logging in edge devices |
| DTC (Data Transfer Controller) | Reduces CPU overhead for memory-to-peripheral transfers (e.g., ADC → RAM buffer) |
Applications
| Smart Energy Meter Interface | Industrial Temperature Sensor Node |
|---|---|
Use Scenario: Communicates with metrology ICs (e.g., ADE7953) via SPI and reports kWh data over RS-485. IC Role / Device Role / Timing Role: Primary controller managing metrology data acquisition, CRC validation, and protocol framing. Use Value: 48 KB flash hosts dual Modbus ASCII/RTU stacks; 10-bit ADC monitors auxiliary supply rails. | Use Scenario: Reads PT100/NTC sensors, compensates for nonlinearity, and transmits calibrated values via LoRaWAN. IC Role / Device Role / Timing Role: Analog signal conditioner and low-power scheduler executing periodic measurement bursts. Use Value: 0.60 μA STOP mode extends CR2032 battery life beyond 5 years; internal 1.45 V reference ensures ADC stability. |
| Home Appliance Motor Control | Asset Tracking Beacon |
Use Scenario: Drives BLDC motor using PWM outputs while monitoring current sense and thermal feedback. IC Role / Device Role / Timing Role: Real-time motion controller coordinating commutation timing and fault response. Use Value: 16-bit TAU timers deliver sub-microsecond PWM resolution; comparator window mode detects overcurrent events. | Use Scenario: Logs GPS position, accelerometer activity, and ambient light at scheduled intervals, then wakes cellular modem. IC Role / Device Role / Timing Role: System supervisor managing sleep/wake cycles and sensor data aggregation. Use Value: SNOOZE mode reduces average current to <2 μA between wake-ups; RTC alarm triggers precise 15-minute intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104LEAFB#V0 | Same core, 64-pin LFQFP (0.5 mm pitch); identical flash/RAM/peripherals | Requires PCB redesign due to finer pitch and different land pattern | Select when board layout allows tighter spacing and higher I/O density is needed |
| R5F104LEAFA#X0 | Identical specs and package; differs only in tape-and-reel packaging (embossed tape vs. tray) | No functional or electrical difference; suited for automated SMT lines requiring reel feed | Choose for high-volume production with pick-and-place equipment compatibility |
Compared with R5F104LEAFA#V0, the LFQFP variant offers denser routing but demands stricter assembly control, while the #X0 version maintains full electrical equivalence with optimized logistics for volume manufacturing.
Availability
R5F104LEAFA#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and asset tracking systems requiring stable component supply across multi-year production cycles.
Supply support for R5F104LEAFA#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 targets cost-sensitive, ultra-low-power embedded applications where extended battery life, integrated analog peripherals, and robust real-time performance are critical.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F104LEAFA#V0?
The R5F104LEAFA#V0 operates up to 32 MHz with a measured performance of 44 DMIPS. This benchmark reflects its RL78 CPU core efficiency under typical compiler-optimized code execution, enabling deterministic response in motor control and communication protocol stacks. The R5F104LEAFA#V0 achieves this while maintaining ultra-low active current consumption of 66 μA/MHz.
Does the R5F104LEAFA#V0 support background data flash rewriting while executing application code?
Yes, the R5F104LEAFA#V0 supports Background Operation (BGO) for data flash memory, allowing instruction execution from program memory during data flash erase/write cycles. This feature enables seamless parameter logging or firmware configuration updates without halting real-time tasks. The R5F104LEAFA#V0 guarantees 1,000,000 rewrite cycles at VDD = 1.8–5.5 V.
What low-power modes are available on the R5F104LEAFA#V0, and what is the lowest achievable current draw?
The R5F104LEAFA#V0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.60 μA at VDD = 3.0 V and TA = 25°C - ideal for decade-long battery operation in environmental sensors. Wake-up latency is under 10 μs from HALT mode, preserving responsiveness in duty-cycled systems. The R5F104LEAFA#V0's power management is fully configurable via dedicated registers.
Can the R5F104LEAFA#V0 generate precise PWM signals for motor control applications?
Yes, the R5F104LEAFA#V0 integrates Timer Array Unit (TAU) with up to 8 channels capable of complementary PWM output, dead-time insertion, and synchronous reload - essential for BLDC and stepper motor drives. Its 16-bit resolution and independent prescalers allow fine-grained speed and torque control. The R5F104LEAFA#V0 also supports hardware fault detection via comparator window mode linked to PWM shutdown.
Is an external crystal required for real-time clock functionality on the R5F104LEAFA#V0?
No, the R5F104LEAFA#V0 includes a dedicated low-frequency oscillator circuit that supports direct connection of a 32.768 kHz crystal to P121/P122 for high-accuracy RTC operation (calendar, alarm, correction). It also allows RC-based RTC if absolute timekeeping precision is not required. The R5F104LEAFA#V0's RTC retains functionality in STOP mode with only 0.60 μA current draw.
R5F104LEAFA#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 48
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 5.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104LEAFA#V0 FAQ
1.How can I place an order for R5F104LEAFA#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104LEAFA#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 R5F104LEAFA#V0 reliable?
The price and inventory of R5F104LEAFA#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104LEAFA#V0 is usually 5 days.
3.What payment methods are accepted for R5F104LEAFA#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104LEAFA#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104LEAFA#V0?
R5F104LEAFA#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104LEAFA#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 R5F104LEAFA#V0?
For technical support, including R5F104LEAFA#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104LEAFA#V0 requirements.
6.How does Aetrix verify that R5F104LEAFA#V0 is sourced from the original manufacturer or authorized distributors?
All R5F104LEAFA#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 R5F104LEAFA#V0 meets industry standards.
7.What is the process for return or replacement of R5F104LEAFA#V0?
All R5F104LEAFA#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104LEAFA#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 R5F104LEAFA#V0 part is unused and in its original packaging.
Return procedure for R5F104LEAFA#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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