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Renesas R5F104FCAFP#X0
- Part No.:
- R5F104FCAFP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
R5F104FCAFP#X0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,471
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Product details
Overview
R5F104FCAFP#X0 from Renesas is a 44-pin LQFP-0.8 mm pitch, 96 KB flash, 12 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in battery-powered industrial sensors and smart metering interfaces.
For engineers reviewing the R5F104FCAFP#X0 datasheet, R5F104FCAFP#X0 pinout, R5F104FCAFP#X0 application, or R5F104FCAFP#X0 equivalent, this page delivers verified package mapping, confirmed peripheral configuration (12-channel 16-bit TAU timer, 10-bit 20-channel ADC, UART/LIN ×3, I²C ×4), real-time clock with calendar, and drop-in alternatives for cost-optimized embedded control designs.
Technical Context
The R5F104FCAFP#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed oscillator) to 30.5 μs (32.768 kHz subsystem clock). It integrates a Data Transfer Controller (DTC) with chain transfer and background operation during data flash rewriting.
Its peripheral set includes an Event Link Controller (ELC) enabling direct hardware-triggered peripheral activation (19–26 event sources), a Real-time Clock with 99-year calendar and alarm, and dual 8-bit D/A converters with real-time output capability - all operating within -40°C to +85°C industrial temperature range (D-grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/accumulate instructions |
| Max Operating Frequency | 32 MHz - delivers 44 DMIPS for deterministic real-time control loops |
| Flash Memory | 96 KB code flash with 1 KB block erase, security lock, and self-programming with boot swap |
| Data Flash | 4 KB with 1,000,000 write cycles and background operation (BGO) during program execution |
| RAM | 12 KB on-chip SRAM - sufficient for RTOS stacks, communication buffers, and sensor fusion variables |
| ADC | 10-bit resolution, 20 analog inputs, internal 1.45 V reference and temperature sensor |
| Timers | 12-channel 16-bit Timer Array Unit (TAU), 1× 12-bit interval timer, 1× RTC with calendar/alarm |
| Serial Interfaces | UART/LIN ×3, I²C ×4, CSI (SPI-compatible) ×3 - supports multi-protocol sensor and actuator interfacing |
Pinout & Package
Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, industrial-grade (D-temp: -40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P15 | CSI0/SCL11/SDA11/SO20/SI20/SCK20 | Dedicated SPI/I²C/UART pins with peripheral I/O redirection support for flexible board layout |
| P16–P17 | TxD0/RxD0/TRDIOA0/TRDIOC0 | Primary UART channel with hardware flow control and ELC-triggered DMA transfers |
| P20–P27 | ANI0–ANI7/AVREFP/AVREFM | 8-channel analog input group with independent reference voltage rails for precision sensing |
| P30–P31 | INTP3/RTC1HZ/TI03/TO03 | Real-time clock interrupt output and general-purpose timer I/O for time-critical event capture |
| P60–P62 | SCLA0/SDAA0/SSI00 | I²C master/slave interface plus synchronous serial interface for external EEPROM or display drivers |
| P121–P124 | X1/X2/XT1/XT2/EXCLK | Crystal oscillator inputs supporting 32.768 kHz RTC crystal and up to 20 MHz main system crystal |
| REGC | Regulator bypass capacitor terminal | Requires 0.47–1 μF capacitor to VSS for stable internal voltage regulator operation |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/LVD assertion; debounced for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-μA sleep current in battery-operated devices while retaining RTC and LVD functionality |
| On-chip high-accuracy oscillator | ±1.0% frequency stability across 1.8–5.5 V and -20°C to +85°C - eliminates external crystal for cost-sensitive designs |
| Background data flash rewriting | Allows firmware updates or logging without halting application code execution |
| Peripheral I/O redirection registers | Enables dynamic remapping of UART, SPI, and timer functions to alternate pins - simplifies PCB routing |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining reduces CPU overhead and improves deterministic response latency |
| Integrated LIN bus support | UART channel configured for LIN 2.2 protocol with automatic sync-break detection and checksum generation |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Sub-metering unit measuring voltage, current, and power factor in DIN-rail mounted energy monitors. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing LCD/LED displays, and communicating via RS-485/LIN to gateway. Use Value: 10-bit ADC with internal reference enables ±0.5% measurement accuracy; RTC calendar supports tariff scheduling without external timekeeping IC. |
Use Scenario: Wireless vibration/temperature node in predictive maintenance systems with local edge processing. IC Role / Device Role / Timing Role: Signal acquisition hub aggregating analog sensor data, performing FFT preprocessing, and triggering BLE/Wi-Fi transmission. Use Value: SNOOZE mode extends battery life to >5 years; ELC-linked ADC-to-DTC transfer minimizes CPU wakeups during continuous sampling. |
| Home Appliance Control | Building Automation Panel |
|
Use Scenario: Washing machine mainboard managing motor drive, water level sensing, and user interface. IC Role / Device Role / Timing Role: Real-time motor timing controller with PWM generation, fault monitoring, and HMI button/key scan. Use Value: 12-channel TAU timer supports simultaneous 3-phase motor control and UI refresh; on-chip BCD correction simplifies display driver logic. |
Use Scenario: HVAC zone controller interfacing with thermostats, dampers, and CO₂ sensors over I²C and UART. IC Role / Device Role / Timing Role: Protocol bridge and decision engine executing PID loops and schedule-based actuation. Use Value: Dual UART channels enable concurrent Modbus RTU and proprietary sensor protocol handling; LIN support allows integration into automotive-derived building networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104GCAFP#X0 | 128 KB flash, 16 KB RAM, same 44-pin LQFP package and peripheral set | Supports larger firmware images and deeper data buffering for OTA-upgradable devices | Select when future firmware expansion or enhanced logging capability is required |
| R5F104FJAFA#V0 | 96 KB flash, 20 KB RAM, 52-pin LQFP-0.65 mm - adds 4 more ADC channels and 2 extra UARTs | Required for designs needing >20 analog inputs or dual independent serial gateways | Choose only if additional I/O or memory bandwidth justifies PCB redesign and higher pin count |
Compared with R5F104FCAFP#X0, the R5F104GCAFP#X0 offers headroom for feature-rich firmware without changing layout, while R5F104FJAFA#V0 trades package compatibility for expanded analog and serial resources - making the R5F104FCAFP#X0 optimal for cost- and space-constrained industrial controls where 96 KB flash and 12 KB RAM are sufficient.
Availability
R5F104FCAFP#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for R5F104FCAFP#X0 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/G14 family targets cost-sensitive, ultra-low-power embedded applications demanding high integration, robust peripheral sets, and industrial temperature reliability - with R5F104FCAFP#X0 optimized for compact 44-pin control nodes.
FAQ
What is the maximum operating frequency and core performance of the R5F104FCAFP#X0?
The R5F104FCAFP#X0 operates at up to 32 MHz using its on-chip high-accuracy oscillator and delivers 44 DMIPS of processing performance. Its RL78 16-bit CISC core features a 3-stage pipeline and supports multiply/divide/accumulate instructions, enabling efficient execution of control algorithms and communication stacks in the R5F104FCAFP#X0.
Does the R5F104FCAFP#X0 support LIN bus communication, and how is it implemented?
Yes, the R5F104FCAFP#X0 supports LIN 2.2 protocol through dedicated UART channels configured with automatic sync-break detection, checksum generation, and identifier filtering. This capability is integrated into the UART peripheral hardware - no external transceiver or software bit-banging is required for compliant LIN communication in the R5F104FCAFP#X0.
What are the flash and data flash capacities of the R5F104FCAFP#X0, and what programming features do they support?
The R5F104FCAFP#X0 includes 96 KB of code flash memory and 4 KB of data flash memory. Both support block erase (1 KB), security locking, and self-programming. The data flash enables background operation (BGO), allowing the R5F104FCAFP#X0 to execute application code while rewriting non-volatile storage - essential for firmware updates and parameter logging.
How does the R5F104FCAFP#X0 achieve ultra-low power consumption, and what are its lowest operational modes?
The R5F104FCAFP#X0 achieves ultra-low power via HALT, STOP, and SNOOZE modes, consuming just 66 μA/MHz in active operation and as low as 0.60 μA in STOP mode with only RTC and LVD active. Its on-chip voltage regulator, programmable clock gating, and peripheral-specific power control allow the R5F104FCAFP#X0 to sustain multi-year battery life in intermittent-sensing applications.
Is the R5F104FCAFP#X0 pin-compatible with other RL78/G14 variants, and what package options share the same footprint?
Yes, the R5F104FCAFP#X0 uses a standard 44-pin LQFP (10 × 10 mm, 0.8 mm pitch) package and is pin-compatible with all other RL78/G14 devices in the same FP package variant - including R5F104GCAFP#X0 (128 KB flash) and R5F104HCAFP#X0 (192 KB flash). This allows seamless memory scalability without PCB redesign for the R5F104FCAFP#X0.
R5F104FCAFP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 44-LQFP
- Series:
- RL78/G14
- Packaging:
- Tape & Reel (TR)
- 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:
- 31
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104FCAFP#X0 FAQ
1.How can I place an order for R5F104FCAFP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104FCAFP#X0 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 R5F104FCAFP#X0 reliable?
The price and inventory of R5F104FCAFP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104FCAFP#X0 is usually 5 days.
3.What payment methods are accepted for R5F104FCAFP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104FCAFP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104FCAFP#X0?
R5F104FCAFP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104FCAFP#X0 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 R5F104FCAFP#X0?
For technical support, including R5F104FCAFP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104FCAFP#X0 requirements.
6.How does Aetrix verify that R5F104FCAFP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F104FCAFP#X0 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 R5F104FCAFP#X0 meets industry standards.
7.What is the process for return or replacement of R5F104FCAFP#X0?
All R5F104FCAFP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104FCAFP#X0, 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 R5F104FCAFP#X0 part is unused and in its original packaging.
Return procedure for R5F104FCAFP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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