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Renesas R5F104LFALA#U0
- Part No.:
- R5F104LFALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFLGA
- Datasheet:
-
R5F104LFALA#U0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 64FLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,946
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Product details
Overview
R5F104LFALA#U0 from Renesas is a 64-pin FLGA-packaged RL78/G14 16-bit microcontroller with 512 KB flash, 48 KB RAM, and 8 KB data flash, operating from 1.6–5.5 V at -40°C to +105°C (industrial G-grade), delivering 44 DMIPS at 32 MHz for low-power industrial control and sensor interface applications.
For engineers reviewing the R5F104LFALA#U0 datasheet, R5F104LFALA#U0 pinout, R5F104LFALA#U0 application, or R5F104LFALA#U0 equivalent, key selection criteria include its 64-pin FLGA (5 × 5 mm, 0.5 mm pitch) package, integrated RTC with calendar support, 20-channel 10-bit ADC, dual D/A converters, and ultra-low power HALT/STOP/SNOOZE modes enabling battery-operated designs.
Technical Context
The R5F104LFALA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz high-speed on-chip oscillator) to 30.5 µs (32.768 kHz subsystem clock). It integrates a Data Transfer Controller (DTC) with chain transfer and an Event Link Controller (ELC) linking up to 26 event sources to peripherals.
It features a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, two 8-bit D/A channels with real-time output, and a comparator with window/high-speed/low-speed modes. The serial interface suite includes up to 10 I²C channels, 4 UART/LIN channels, and 8 CSI (SPI-compatible) channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/divide/accumulate instructions |
| Max Clock Speed | 32 MHz (44 DMIPS); high-accuracy on-chip oscillator ±1.0% over -20 to +85°C |
| Memory | 512 KB code flash (1 KB block size), 48 KB RAM, 8 KB data flash (1M rewrite cycles) |
| Power Modes | HALT (66 μA/MHz), STOP (0.60 μA with RTC+LVD active), SNOOZE for low-latency wake-up |
| Analog Peripherals | 20-channel 10-bit ADC (VDD-referenced), two 8-bit DACs (0–VDD output), two comparators with selectable reference |
| Timers | 12× 16-bit timers (TAU/Timer RJ/RD/RG), 1× 12-bit interval timer, calendar RTC with alarm/correction |
| Serial Interfaces | Up to 10 I²C, 4 UART/LIN, 8 CSI (SPI-compatible) channels; supports background operation during data flash rewrite |
Pinout & Package
Package: FLGA (Fine Pitch Land Grid Array), 64-pin, 5 × 5 mm body, 0.5 mm pitch, bottom-side solder pads - optimized for space-constrained industrial modules and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/P01 | TxD1/RxD1, TO00/TI00, TRGCLKA/B | UART1 full-duplex I/O with trigger clock input for synchronized timing control |
| P10–P17 | SPI/I²C/UART/ADC/DAC/Comparator I/O | Multiplexed peripheral interface bank supporting simultaneous CSI, I²C, and analog functions |
| P20–P27 | ANI0–ANI7, AVREFP/M, ANO0/1 | 8-channel analog input group with dedicated reference pins and analog output capability |
| P30/P31 | INTP3/RTC1HZ, INTP4/TI03/TO03 | Dedicated real-time clock interrupt and general-purpose timer I/O with buzzer output support |
| P60–P62 | SCLA0/SDAA0/SSI00 | I²C master/slave and synchronous serial interface for sensor and EEPROM communication |
| P120–P124 | VCOUT0/1, X1/X2/XT1/XT2 | Crystal oscillator inputs and voltage-controlled output for precision timing and external clock injection |
| REGC/VSS/VDD/RESET | Regulator bypass, ground, supply, reset | On-chip LDO regulator requires 0.47–1 µF REGC-to-VSS capacitor for stable low-power operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power STOP mode | 0.60 μA current draw while maintaining RTC and LVD functionality for years on coin-cell batteries |
| Data flash BGO | Background operation allows full CPU execution from code flash during 8 KB data flash rewrite (1M cycle endurance) |
| Peripheral I/O redirection | PIOR0/1 registers enable dynamic remapping of UART, SPI, and timer signals to alternate pins without hardware change |
| Real-time D/A output | Two independent 8-bit DACs support continuous waveform generation (e.g., PWM replacement, sensor biasing) without CPU intervention |
| ELC event linking | Hardware-triggered peripheral chaining (e.g., ADC conversion → DMA transfer → timer compare) eliminates ISR latency and CPU load |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Brushless DC motor drive in HVAC blowers with thermal monitoring and fault protection. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, managing PWM outputs via TAU timers, and sampling current/voltage via 10-bit ADC with internal reference. Use Value: Integrated 20-channel ADC, dual DACs for analog feedback conditioning, and STOP-mode RTC enable predictive maintenance logging without external power management ICs. | Use Scenario: Battery-powered environmental sensor hub measuring temperature, humidity, and CO₂ with wireless telemetry. IC Role / Device Role / Timing Role: System-on-chip host managing sensor I²C interfaces, RTC-based wake-up scheduling, and low-power data aggregation before BLE transmission. Use Value: 0.60 μA STOP mode with RTC active extends 10-year battery life; on-chip temperature sensor and 1.45 V reference eliminate external calibration components. |
| Programmable Logic Controller (PLC) I/O Module | Home Appliance Control Panel |
Use Scenario: DIN-rail mounted I/O expansion module with digital input filtering, analog current loop output, and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time I/O processor handling isolated digital inputs, 4–20 mA DAC output via external op-amp, and UART-based Modbus protocol stack. Use Value: 64-pin FLGA provides ample GPIO (92 total) and dedicated LIN-capable UARTs for fieldbus interoperability; ELC links timer events to DTC for deterministic I/O scan timing. | Use Scenario: Touch-enabled microwave oven control with display backlight dimming, cooking time tracking, and safety interlock monitoring. IC Role / Device Role / Timing Role: Primary MCU managing capacitive touch sensing, RTC-based cooking countdown, buzzer alerts, and relay driver control via GPIO. Use Value: Integrated PCLBUZ0/1 timers drive piezo buzzers directly; SNOOZE mode enables fast wake-from-sleep response to touch events while minimizing average power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104LGALA#U0 | Same 64-pin FLGA package, identical 512 KB flash/48 KB RAM, but rated for -40°C to +85°C (A-grade) instead of +105°C (G-grade) | Consumer-grade ambient range; unsuitable for under-hood or industrial cabinet deployments above 85°C | Select when cost sensitivity outweighs extended temperature requirement and ambient stays ≤85°C |
| R5F104LLALA#U0 | Same 64-pin FLGA, same G-grade temp range, but with 384 KB flash/32 KB RAM - reduced memory footprint and lower cost | Applicable where firmware size <384 KB and RAM usage <32 KB; retains all peripherals including RTC, ADC, DAC, ELC | Choose for cost-optimized industrial designs with verified memory headroom and identical thermal robustness |
Compared with R5F104LFALA#U0, R5F104LGALA#U0 trades industrial temperature rating for lower unit cost in consumer environments, while R5F104LLALA#U0 maintains full G-grade reliability at reduced memory capacity - both retain identical pinout, peripheral set, and low-power architecture.
Availability
R5F104LFALA#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and home appliance control panels requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F104LFALA#U0 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G14 product line delivers true low-power performance (66 μA/MHz, 0.60 μA STOP) with rich analog integration and flexible peripherals for cost-sensitive industrial and consumer control applications.
FAQ
What is the operating temperature range for the R5F104LFALA#U0?
The R5F104LFALA#U0 is rated for industrial applications with an operating ambient temperature range of -40°C to +105°C (G-grade), validated per Renesas specification R01DS0053EJ0370. This makes it suitable for deployment in harsh environments such as factory automation cabinets, outdoor metering, and under-hood automotive auxiliary systems where extended thermal stability is required. The R5F104LFALA#U0 maintains full functionality-including RTC, ADC accuracy, and flash write endurance-across this full range.
Does the R5F104LFALA#U0 support in-circuit debugging and flash programming?
Yes, the R5F104LFALA#U0 includes an on-chip debug function compatible with Renesas E2 emulator and CS+ IDE. It supports self-programming of both code and data flash memory with boot swapping and flash shield window protection. Debug access uses the single-wire SWD interface via dedicated pins (e.g., RESET, TOOL0), and no external debug probe is required for basic programming and breakpoint-based development. The R5F104LFALA#U0 also enables secure firmware updates through its prohibition-of-block-erase feature.
What are the key low-power modes supported by the R5F104LFALA#U0?
The R5F104LFALA#U0 supports three primary low-power modes: HALT (66 μA/MHz), STOP (0.60 μA with RTC and LVD active), and SNOOZE (ultra-fast wake-up with selected peripherals running). In STOP mode, the CPU and most clocks halt while the sub-system clock sustains RTC, LVD, and key interrupts-enabling multi-year operation on coin cells. The R5F104LFALA#U0's SNOOZE mode allows UART or ADC operations to continue autonomously during partial sleep, reducing wake-up latency for responsive sensor or communication tasks.
How many analog-to-digital converter channels does the R5F104LFALA#U0 provide, and what is their resolution?
The R5F104LFALA#U0 integrates a 10-bit successive-approximation ADC with up to 20 input channels (ANI0–ANI19), supporting single-ended and differential measurements. It includes an internal 1.45 V reference voltage and on-die temperature sensor, eliminating need for external references in most industrial sensing applications. Input voltage range is rail-to-rail (0 V to VDD), and conversion time is programmable down to 1.2 μs per sample. The R5F104LFALA#U0's ADC operates across the full -40°C to +105°C range with guaranteed monotonicity and ±2 LSB integral nonlinearity.
Is the R5F104LFALA#U0 pin-compatible with other RL78/G14 variants in the same package?
Yes, all RL78/G14 devices in the 64-pin FLGA package-including R5F104LFALA#U0, R5F104LLALA#U0, and R5F104LGALA#U0-share identical pinouts, electrical characteristics, and mechanical dimensions. This enables direct substitution within the same footprint for memory or temperature grade optimization without PCB redesign. Firmware compatibility is maintained across the family, though users must verify flash/RAM allocation and peripheral enable settings in initialization code when migrating between variants. The R5F104LFALA#U0's pin mapping is fully documented in Section 1.3.6 of the official datasheet.
R5F104LFALA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-WFLGA
- Series:
- RL78/G14
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 12x8/10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104LFALA#U0 FAQ
1.How can I place an order for R5F104LFALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104LFALA#U0 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 R5F104LFALA#U0 reliable?
The price and inventory of R5F104LFALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104LFALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F104LFALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104LFALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104LFALA#U0?
R5F104LFALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104LFALA#U0 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 R5F104LFALA#U0?
For technical support, including R5F104LFALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104LFALA#U0 requirements.
6.How does Aetrix verify that R5F104LFALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F104LFALA#U0 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 R5F104LFALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F104LFALA#U0?
All R5F104LFALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104LFALA#U0, 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 R5F104LFALA#U0 part is unused and in its original packaging.
Return procedure for R5F104LFALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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