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Renesas R5F104FJAFP#X0
- Part No.:
- R5F104FJAFP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
R5F104FJAFP#X0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,608
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Product details
Overview
R5F104FJAFP#X0 from Renesas is a 44-pin LQFP-0.8 mm pitch 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 to +85°C (industrial A-grade), featuring ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD), 32 MHz max CPU speed (44 DMIPS), and integrated peripherals including 12-channel 10-bit ADC, dual DAC, RTC, and multiple serial interfaces (UART, I²C, CSI).
For engineers reviewing the R5F104FJAFP#X0 datasheet, R5F104FJAFP#X0 pinout, R5F104FJAFP#X0 application, or R5F104FJAFP#X0 equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options for industrial control, sensor nodes, and battery-powered HMI designs requiring low-power deterministic execution and on-chip analog integration.
Technical Context
The R5F104FJAFP#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode), and includes multiply/divide/accumulate instructions with 1 MB address space and four banks of 8-bit general-purpose registers.
It integrates a configurable Data Transfer Controller (DTC) with normal/repeat/block transfer modes activated by interrupt sources and chain transfer capability, plus an Event Link Controller (ELC) enabling direct hardware linking of up to 26 event signals to peripheral functions without CPU intervention-reducing latency and firmware overhead in real-time control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response and low-code-footprint firmware. |
| Max Operating Frequency | 32 MHz (44 DMIPS); supports fast signal processing and responsive UI rendering in resource-constrained systems. |
| Flash Memory | 192 KB code flash + 8 KB data flash; sufficient for complex firmware with background data logging and OTA update support. |
| RAM | 20 KB on-chip RAM; accommodates large buffers for communication stacks and real-time control variables. |
| ADC | 10-bit resolution, 12-channel SAR ADC with internal 1.45 V reference and temperature sensor; enables precision analog sensing without external components. |
| Power Consumption | 66 μA/MHz active, 0.60 μA in RTC+LVD-only mode; extends battery life in always-on sensor and metering applications. |
| Operating Voltage | 1.6–5.5 V single supply; simplifies power design across diverse input sources (coin cell, Li-ion, USB, industrial rails). |
| Temperature Range | -40 to +85°C (A-grade); qualified for industrial environments including factory automation and building controls. |
Pinout & Package
Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, with exposed thermal pad not present (standard LQFP). Pin 1 marked by dot; REGC requires 0.47–1 μF capacitor to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit; timer input; debug clock input-enables dual-role pin for compact board layout. |
| P16 | RxD0 / TI01 / TO01 / INTP5 | Hardware UART receive with timer capture and interrupt capability-supports glitch-free serial comms and edge-triggered event capture. |
| P60 | SCLA0 | I²C bus clock line with internal pull-up; eliminates external resistor for cost-sensitive I²C slave interfaces. |
| P121 / P122 | X1 / X2 | Crystal oscillator inputs for precise 32.768 kHz RTC timing or high-accuracy system clock generation. |
| RESET | Active-low reset input | Asynchronous reset with internal POR/LVD; ensures reliable startup under brown-out and power-transient conditions. |
| VDD / VSS | Power supply pins | Dual VDD/VSS pairs reduce noise coupling; supports stable operation at 32 MHz with minimal decoupling (0.1 μF + 1 μF per pair). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Power HALT/STOP/SNOOZE modes | Enables sub-μA sleep states with fast wake-up (< 4 μs), critical for energy harvesting and battery lifetime optimization. |
| Self-programming flash with boot swap | Supports safe firmware updates via dual-bank mechanism-prevents bricking during field upgrades. |
| Background Operation (BGO) for data flash | Allows concurrent code execution and data logging-essential for real-time data acquisition without interruption. |
| Event Link Controller (ELC) | Eliminates CPU polling by directly routing peripheral events (e.g., ADC EOC → DMA trigger), reducing ISR latency and CPU load. |
| On-chip voltage detector (LVD) with 14 levels | Provides programmable brown-out detection and reset/interrupt generation-enables graceful shutdown before data corruption. |
| Dual 8-bit D/A converters | Delivers two independent analog outputs (0–VDD range) for sensor calibration, bias control, or simple waveform generation. |
Applications
| Industrial Sensor Node | Smart Thermostat HMI |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with wireless transmission every 5 minutes. IC Role / Device Role / Timing Role: Main controller executing sensor readout, data preprocessing, RTC-scheduled transmission, and ultra-low-power sleep management. Use Value: 0.60 μA RTC+LVD mode extends 2× AA battery life beyond 5 years; integrated 10-bit ADC and temperature sensor eliminate external signal conditioning. |
Use Scenario: Residential thermostat with capacitive touch buttons, LCD display, and HVAC control logic. IC Role / Device Role / Timing Role: System-on-chip managing touch scan, display refresh, PID loop execution, and relay drive timing. Use Value: 44 DMIPS at 32 MHz handles real-time touch debouncing and smooth UI animation; dual DAC drives buzzer and LED dimming without extra drivers. |
| Programmable Logic Controller (PLC) I/O Module | Energy Meter Front-End |
Use Scenario: DIN-rail mounted digital I/O expansion module with 8 isolated inputs and 8 relay outputs. IC Role / Device Role / Timing Role: Real-time I/O scheduler using ELC-linked timer and DTC for deterministic input sampling and output update cycles. Use Value: ELC hardware event chaining ensures <100 ns jitter in I/O state updates; 192 KB flash hosts custom ladder logic interpreter and Modbus RTU stack. |
Use Scenario: Revenue-grade electricity meter front-end performing current/voltage sampling, RMS calculation, and tamper detection. IC Role / Device Role / Timing Role: Precision analog subsystem controller synchronizing 12-channel ADC sampling, computing harmonic content, and storing logs in data flash. Use Value: 10-bit ADC with internal reference achieves ±1% measurement accuracy; BGO allows continuous logging while running metrology algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104GJAFP#X0 | Same 44-pin LQFP package, 256 KB flash, 24 KB RAM, identical peripherals and pinout. | Higher memory headroom for larger protocol stacks (e.g., MQTT over TLS) or extended data logging. | Select when firmware size exceeds 192 KB or future scalability is required without PCB change. |
| R5F104FHAFP#X0 | Same package, 128 KB flash, 16 KB RAM, otherwise identical feature set and pin compatibility. | Lower-cost option for simpler control tasks where full 192 KB is unused. | Choose for cost-sensitive volume production where memory margin is >30% and no future firmware bloat is expected. |
Compared with R5F104FJAFP#X0, R5F104GJAFP#X0 provides 64 KB additional flash and 4 KB more RAM for complex connectivity features, while R5F104FHAFP#X0 reduces flash/RAM by 64 KB/4 KB-offering a calibrated trade-off between cost and headroom in fixed-function industrial controllers.
Availability
R5F104FJAFP#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controls, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ISO 9001-certified manufacturing.
Supply support for R5F104FJAFP#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 automotive, industrial, and IoT markets.
The RL78/G14 product line targets cost-sensitive, ultra-low-power general-purpose applications-designed to replace legacy 8-bit MCUs with enhanced performance, integrated analog, and robust industrial qualification.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F104FJAFP#X0?
The R5F104FJAFP#X0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This value is derived from the RL78 CPU core's 3-stage pipeline execution efficiency and confirmed in Renesas' official benchmark documentation for the RL78/G14 family. The R5F104FJAFP#X0 sustains this performance across its full 1.6–5.5 V supply range and -40 to +85°C temperature envelope.
Does the R5F104FJAFP#X0 support background data flash rewriting while executing code from main flash memory?
Yes, the R5F104FJAFP#X0 supports Background Operation (BGO) for its 8 KB data flash memory. This allows the CPU to execute instructions from program flash while simultaneously erasing or programming data flash sectors-a key capability for non-volatile parameter storage and firmware update staging without halting real-time operation.
What are the supported crystal frequencies for the RTC and main system clock on the R5F104FJAFP#X0?
The R5F104FJAFP#X0 supports a 32.768 kHz crystal on X1/X2 pins for calendar-mode RTC operation with alarm and clock correction functions. For the main system clock, it accepts crystals up to 32 MHz or uses its internal high-speed oscillator selectable from 1–64 MHz-with ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C.
How many analog input channels does the R5F104FJAFP#X0 ADC support, and what reference options are available?
The R5F104FJAFP#X0 integrates a 10-bit successive approximation register (SAR) ADC with up to 12 analog input channels. It supports both external voltage references and an internal 1.45 V reference, enabling accurate measurements across varying supply voltages without external reference ICs.
Is the R5F104FJAFP#X0 pin-compatible with other RL78/G14 variants in the same 44-pin LQFP package?
Yes, all RL78/G14 devices in the 44-pin LQFP-0.8 mm pitch package-including R5F104FAAFP#X0 through R5F104FJAFP#X0 and R5F104GJAFP#X0-share identical pinouts, electrical characteristics, and peripheral mappings. This enables seamless memory-scaling upgrades (e.g., from 64 KB to 192 KB or 256 KB flash) without PCB redesign.
R5F104FJAFP#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:
- 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 10x8/10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104FJAFP#X0 FAQ
1.How can I place an order for R5F104FJAFP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104FJAFP#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 R5F104FJAFP#X0 reliable?
The price and inventory of R5F104FJAFP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104FJAFP#X0 is usually 5 days.
3.What payment methods are accepted for R5F104FJAFP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104FJAFP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104FJAFP#X0?
R5F104FJAFP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104FJAFP#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 R5F104FJAFP#X0?
For technical support, including R5F104FJAFP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104FJAFP#X0 requirements.
6.How does Aetrix verify that R5F104FJAFP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F104FJAFP#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 R5F104FJAFP#X0 meets industry standards.
7.What is the process for return or replacement of R5F104FJAFP#X0?
All R5F104FJAFP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104FJAFP#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 R5F104FJAFP#X0 part is unused and in its original packaging.
Return procedure for R5F104FJAFP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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