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Renesas R5F104CFALA#U0
- Part No.:
- R5F104CFALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 36-WFLGA
- Datasheet:
-
R5F104CFALA#U0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 36WFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,673
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Product details
Overview
R5F104CFALA#U0 from Renesas is a 36-pin WFLGA-packaged RL78/G14 16-bit microcontroller with 32 KB flash, 4 KB data flash, 5.5 KB RAM, 10-bit ADC (16 channels), and real-time clock - designed for ultra-low-power industrial sensor nodes and battery-powered control systems operating from 1.6 V to 5.5 V.
For engineers reviewing the R5F104CFALA#U0 datasheet, R5F104CFALA#U0 pinout, R5F104CFALA#U0 application, or R5F104CFALA#U0 equivalent, key selection criteria include its 66 μA/MHz active current, HALT/STOP/SNOOZE power modes, integrated LVD with 14-level detection, and hardware event linking via ELC for deterministic peripheral coordination.
Technical Context
The R5F104CFALA#U0 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). It integrates a Data Transfer Controller (DTC) with chain transfer capability and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral signal routing without CPU intervention.
Its memory subsystem includes 32 KB on-chip code flash (1 KB block size, security-protected erase/write), 4 KB data flash with background operation (BGO) and 1M-cycle endurance, and 5.5 KB SRAM. The high-accuracy ±1.0% on-chip oscillator supports 12 selectable frequencies from 1–64 MHz across the full voltage/temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/divide instructions |
| Flash Memory | 32 KB code flash with 1 KB erase blocks and flash shield window security |
| Data Flash | 4 KB with background operation (BGO) and 1,000,000 write cycles (TYP.) |
| RAM | 5.5 KB on-chip SRAM, including dedicated areas for flash library operation |
| ADC | 10-bit resolution, 16 analog input channels, internal 1.45 V reference and temperature sensor |
| Power Modes | HALT (66 μA/MHz), STOP (0.60 μA with RTC+LVD only), SNOOZE for low-latency wake-up |
| Oscillator | On-chip high-speed oscillator with ±1.0% accuracy (1.8–5.5 V, −20 to +85°C) |
| Operating Range | −40 to +85°C (Industrial grade A/D), 1.6–5.5 V supply voltage |
Pinout & Package
Package: 36-pin WFLGA (4 × 4 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit; timer input; trace clock source for debug interface |
| P01 | RxD1 / TO00 / TRGCLKB | Primary UART receive; timer output; secondary trace clock for synchronized debugging |
| P10–P17 | CSI/UART/I²C/SIO interfaces | Multi-function serial I/O pins supporting up to 8 CSI, 4 UART, and 10 I²C channels via peripheral redirection |
| P20–P27 | ANI0–ANI7 / AVREFP / AVREFM | 8-channel analog input with dedicated reference voltage inputs for precision ADC measurements |
| P30–P31 | INTP3 / RTC1HZ / TI03 / TO03 | Real-time clock interrupt output and general-purpose timer I/O for time-critical control loops |
| P60–P62 | SCLA0 / SDAA0 / SSI00 | I²C master/slave interface and synchronous serial interface for sensor or EEPROM communication |
| P120–P122 | VCOUT0 / X1 / X2 | Crystal oscillator connections (32.768 kHz) and VCOUT for external clock distribution |
| RESET / REGC / VDD / VSS | Reset control / regulator capacitor / power rails | Hardware reset with POR/LVD; REGC requires 0.47–1 µF capacitor to VSS for stable internal regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 66 μA/MHz active current and 0.60 μA STOP mode enable multi-year battery life in sensor endpoints |
| Hardware event linking (ELC) | Direct peripheral triggering without CPU overhead - e.g., ADC conversion completion starts DMA transfer |
| Background data flash rewrite | Execute code from flash while updating data flash - critical for field firmware updates without interruption |
| Multi-voltage I/O interface | Supports 1.8/2.5/3.0 V logic levels - simplifies interfacing with mixed-voltage sensors and peripherals |
| On-chip LVD with 14 levels | Configurable voltage monitoring with interrupt or reset action - enables graceful shutdown before brownout |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - eliminates need for external RTC in time-stamped logging |
Applications
| Smart Sensor Node | Industrial Motor Control |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality at remote sites. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, data preprocessing, and BLE/Wi-Fi transmission scheduling. Use Value: 0.60 μA STOP mode with RTC keeps time and wakes on schedule; 10-bit ADC provides sufficient resolution for calibrated sensor outputs. | Use Scenario: Compact BLDC motor driver board requiring closed-loop commutation timing and fault monitoring. IC Role / Device Role / Timing Role: Real-time motion controller managing PWM generation, current sensing, and over-temperature shutdown. Use Value: ELC links ADC end-of-conversion to TAU timer reload, enabling sub-microsecond response to current spikes without CPU latency. |
| Energy Metering Module | Home Appliance Control |
Use Scenario: DIN-rail mounted electricity meter collecting voltage/current samples and computing kWh over 15-minute intervals. IC Role / Device Role / Timing Role: Data acquisition and computation engine with secure flash storage for tariff tables and usage logs. Use Value: 4 KB data flash with 1M write cycles stores long-term energy data; BGO allows logging during active measurement cycles. | Use Scenario: Washing machine main control board managing water valves, pump, heater, and user interface. IC Role / Device Role / Timing Role: Central MCU coordinating motor sequencing, temperature regulation, and safety interlocks. Use Value: Integrated LVD with 14 threshold levels detects brownout conditions early; HALT mode reduces standby consumption during idle cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104BFALA#U0 | 16 KB flash, 4 KB data flash, 2.5 KB RAM - smaller memory footprint | Suitable for simpler control tasks with minimal firmware and data logging | Select when application code size remains under 14 KB and no extended data retention is required |
| R5F104EFALA#U0 | 64 KB flash, 4 KB data flash, 5.5 KB RAM - double flash capacity | Required for larger firmware images, bootloader support, or dual-bank OTA updates | Choose when future firmware expansion, cryptographic libraries, or secure boot features are planned |
Compared with R5F104BFALA#U0, the R5F104CFALA#U0 provides 16 KB additional flash for feature-rich firmware while retaining identical peripheral set and power profile; versus R5F104EFALA#U0, it trades 32 KB flash for lower cost and same RAM/data flash - optimal for cost-sensitive industrial controls with stable firmware.
Availability
R5F104CFALA#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, energy metering modules, and home appliance control requiring stable component supply across production lifecycles.
Supply support for R5F104CFALA#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 for general-purpose embedded applications - balancing energy efficiency, rich peripheral integration, and development simplicity for cost-sensitive industrial designs.
FAQ
What is the maximum operating frequency of the R5F104CFALA#U0?
The R5F104CFALA#U0 supports a maximum CPU operating frequency of 32 MHz using the on-chip high-speed oscillator. Its minimum instruction execution time is 0.03125 µs at this speed, and it also supports ultra-low-speed operation down to 32.768 kHz for RTC and ultra-low-power modes. The oscillator accuracy is ±1.0% across 1.8–5.5 V and −20 to +85°C.
Does the R5F104CFALA#U0 support in-system programming?
Yes, the R5F104CFALA#U0 supports in-system programming via its on-chip debug function and self-programming capability. It enables flash rewriting with boot swapping and flash shield window protection. The flash library uses RAM starting at address FE900H, and background operation (BGO) allows program execution during data flash writes - essential for field firmware updates without halting system operation.
What serial communication interfaces are available on the R5F104CFALA#U0?
The R5F104CFALA#U0 provides multiple serial interfaces: up to 8 CSI (SPI-compatible) channels, 4 UART channels (with LIN-bus support), and up to 10 I²C/simplified I²C channels. These are implemented on shared pins (e.g., P10–P17, P60–P62) and configurable via peripheral I/O redirection registers (PIOR0/1), allowing flexible pin assignment without PCB changes.
How many analog input channels does the R5F104CFALA#U0 ADC support?
The R5F104CFALA#U0 integrates a 10-bit resolution A/D converter with up to 16 analog input channels (ANI0–ANI7, ANI16–ANI19). It operates across the full supply range (1.6–5.5 V) and includes an internal 1.45 V reference voltage and integrated temperature sensor - enabling accurate sensor measurements without external references.
What power-saving modes are implemented in the R5F104CFALA#U0?
The R5F104CFALA#U0 implements three primary low-power modes: HALT (66 μA/MHz), STOP (0.60 μA with RTC and LVD active), and SNOOZE (ultra-low-latency wake-up from peripheral events). All modes retain RAM content and support wake-up via interrupts, RTC alarm, or external pins - making it ideal for intermittent-sensing applications where responsiveness and battery life must coexist.
R5F104CFALA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 36-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:
- 26
- 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 8x8/10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104CFALA#U0 FAQ
1.How can I place an order for R5F104CFALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104CFALA#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 R5F104CFALA#U0 reliable?
The price and inventory of R5F104CFALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104CFALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F104CFALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104CFALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104CFALA#U0?
R5F104CFALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104CFALA#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 R5F104CFALA#U0?
For technical support, including R5F104CFALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104CFALA#U0 requirements.
6.How does Aetrix verify that R5F104CFALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F104CFALA#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 R5F104CFALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F104CFALA#U0?
All R5F104CFALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104CFALA#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 R5F104CFALA#U0 part is unused and in its original packaging.
Return procedure for R5F104CFALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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