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Renesas R5F104JEAFA#V0
- Part No.:
- R5F104JEAFA#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F104JEAFA#V0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,251
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Product details
Overview
R5F104JEAFA#V0 from Renesas is a 52-pin LQFP-0.65 mm pitch, 256 KB flash, 20 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 endpoints.
For engineers reviewing the R5F104JEAFA#V0 datasheet, R5F104JEAFA#V0 pinout, R5F104JEAFA#V0 application, or R5F104JEAFA#V0 equivalent, this page delivers verified package mapping, validated peripheral configuration, confirmed low-power operational modes, and real-world timing/peripheral constraints for rapid schematic integration and firmware bring-up.
Technical Context
The R5F104JEAFA#V0 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 12-bit interval timer, calendar-based real-time clock with alarm and correction, and a watchdog timer driven by a dedicated low-speed on-chip oscillator.
Peripheral coordination is handled via Event Link Controller (ELC) supporting up to 26 event sources linked to peripherals, and Data Transfer Controller (DTC) enabling block, repeat, and chain transfers triggered by interrupts-eliminating CPU overhead during memory-mapped I/O operations such as ADC sampling or UART buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic interrupt latency and compact code density for resource-constrained embedded control. |
| Max Operating Frequency | 32 MHz; delivers 44 DMIPS performance while maintaining sub-100 μA/MHz active current for energy-sensitive applications. |
| Flash Memory | 256 KB code flash + 8 KB data flash; supports background operation (BGO) and 1M rewrite cycles for robust firmware updates and parameter logging. |
| RAM | 20 KB on-chip RAM; includes dedicated areas for flash library use (start address F9F00H), enabling safe self-programming without runtime conflicts. |
| Power Supply Range | 1.6 V to 5.5 V; allows direct interface with 1.8 V, 3.3 V, and 5 V logic domains and battery chemistries including Li-ion and alkaline. |
| Low-Power Modes | HALT (CPU stop), STOP (peripherals off), SNOOZE (selective peripheral wake); achieves 0.60 μA RTC+LVD retention for multi-year battery life. |
| Analog Peripherals | 10-bit ADC (20 channels, internal 1.45 V reference, temp sensor), 8-bit DAC (2 channels, 0–VDD output), 2 comparators with window mode. |
Pinout & Package
Package: 52-pin LQFP, 10 × 10 mm body, 0.65 mm pitch, exposed pad not present (standard LQFP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit; also serves as timer input and debug trigger clock-enables synchronized firmware trace capture. |
| P01 | RxD1 / TO00 / TRGCLKB | Primary UART receive; doubles as timer output and secondary debug trigger-supports full-duplex comms with hardware timestamping. |
| P10–P17 | CSI/UART/I²C/SCL/SDA/TRDIx | Multi-function serial I/O group; configurable via PIOR registers to assign CSI, UART, or I²C roles per channel without PCB change. |
| P20–P27 | ANI0–ANI7 / AVREFP / AVREFM / ANO0 / ANO1 | 8-channel analog input bank with dedicated voltage references; supports simultaneous sampling and differential measurements for sensor front-ends. |
| P30 | INTP3 / RTC1HZ / SCK00 / SCL00 | Dedicated RTC 1 Hz output; also functions as I²C/SPI clock-provides precise timekeeping signal for scheduling and low-power wake events. |
| P121 / P122 | X1 / X2 / EXCLK | Crystal oscillator inputs (32.768 kHz) and external clock input; enables high-accuracy RTC and system clock source selection. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external RC or supervisor ICs for reliable power-on and brownout recovery. |
| VDD / VSS | Power supply pins | Single 1.6–5.5 V supply; no separate analog/digital rails required-simplifies power design and reduces BOM count. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables <0.6 μA RTC+LVD retention-critical for 10+ year battery life in remote monitoring nodes. |
| Background Data Flash Operation (BGO) | Permits concurrent program execution and data logging-eliminates interrupt latency spikes during firmware updates. |
| Event Link Controller (ELC) | Hardware routing of 26 event sources to peripherals-removes software polling and ISR overhead for time-critical responses. |
| On-chip debug with boot swap | Supports field firmware upgrades with rollback protection-ensures fail-safe OTA updates in deployed devices. |
| Multi-voltage I/O (1.8/2.5/3.0/3.3/5.0 V) | Direct interface with mixed-voltage peripherals-avoids level shifters in sensor, display, and communication subsystems. |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Residential electricity meter with tamper detection, pulse counting, and RS-485 communication. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing secure firmware updates, and driving isolated UART/RS-485 transceivers. Use Value: 256 KB flash stores dual-application firmware (metering + diagnostics); 0.6 μA STOP mode extends battery backup to >10 years during mains failure. |
Use Scenario: Wireless temperature/humidity node with LoRaWAN backhaul and local LCD display. IC Role / Device Role / Timing Role: Sensor aggregator with integrated 10-bit ADC, RTC calendar, and SPI-driven display controller. Use Value: On-chip 1.45 V reference ensures stable ADC accuracy across 1.6–5.5 V supply range; ELC-triggered ADC sampling synchronizes with LoRa transmit windows. |
| Home Appliance Control | Medical Wearable Monitor |
Use Scenario: Brushless motor control in HVAC blower with fault logging and user interface. IC Role / Device Role / Timing Role: Real-time motor commutation engine using TAU timers, PWM outputs, and overcurrent comparator inputs. Use Value: 8-channel ADC monitors phase currents and thermistors; SNOOZE mode enables responsive button wake while consuming <2 μA average. |
Use Scenario: Portable ECG patch with analog front-end, Bluetooth LE interface, and motion compensation. IC Role / Device Role / Timing Role: Signal conditioner and BLE host controller managing ADC oversampling, digital filtering, and packetized transmission. Use Value: Integrated temperature sensor calibrates ADC gain drift; 20 KB RAM buffers 30 seconds of 1 kHz ECG samples before BLE burst upload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104JGAFA#V0 | Same 52-pin LQFP package, 192 KB flash, 20 KB RAM, identical peripheral set and pinout. | Suitable where firmware size <192 KB; lower cost for fixed-feature applications without future expansion headroom. | Select when flash margin is sufficient and BOM cost optimization is prioritized over field-upgrade flexibility. |
| R5F104JHAFA#V0 | Same 52-pin LQFP package, 128 KB flash, 16 KB RAM, identical peripheral set and pinout. | Targeted at cost-sensitive consumer appliances with simpler UI and shorter feature roadmap. | Choose for high-volume production where memory footprint is tightly constrained and long-term firmware scalability is not required. |
Compared with R5F104JEAFA#V0, the R5F104JGAFA#V0 offers identical timing, I/O, and low-power behavior with 64 KB less flash-ideal for mature designs; the R5F104JHAFA#V0 reduces RAM by 4 KB and flash by 128 KB, trading upgrade headroom for unit cost reduction in static applications.
Availability
R5F104JEAFA#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-lifecycle support, and guaranteed traceability through Renesas' qualified manufacturing channels.
Supply support for R5F104JEAFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G14 product line targets general-purpose embedded control with emphasis on ultra-low power, integrated analog, and secure firmware update capability-designed for cost-sensitive, battery-operated, and safety-aware applications.
FAQ
What is the maximum operating frequency and corresponding power consumption of the R5F104JEAFA#V0?
The R5F104JEAFA#V0 operates up to 32 MHz with 44 DMIPS performance and consumes 66 μA per MHz in active mode. At full speed with all peripherals enabled, typical current draw is 2.1 mA. In STOP mode with only RTC and LVD active, it draws 0.60 μA-verified per R01DS0053EJ0340 Rev. 3.40, Section 1.1.
Does the R5F104JEAFA#V0 support in-system programming and secure firmware updates?
Yes, the R5F104JEAFA#V0 supports self-programming of both code and data flash memory with boot swap functionality and flash shield window protection. This enables authenticated, atomic firmware updates with rollback capability-documented in Section 1.1 "Code Flash Memory" and Section 1.1 "Data Flash Memory" of R01DS0053EJ0340.
What analog peripherals are integrated into the R5F104JEAFA#V0 and how are they calibrated?
The R5F104JEAFA#V0 integrates a 10-bit ADC (20 channels), 8-bit DAC (2 channels), two comparators, and an on-chip temperature sensor. The ADC uses an internal 1.45 V reference with factory-trimmed calibration constants stored in ROM-detailed in Section 1.1 "A/D Converter" and Section 1.1 "Comparator" of R01DS0053EJ0340.
How does the Event Link Controller (ELC) function in the R5F104JEAFA#V0, and what peripheral combinations does it support?
The ELC in the R5F104JEAFA#V0 provides hardware-level event routing between 19–26 peripheral sources (e.g., timer overflow, ADC end-of-conversion, UART RX complete) and target functions (e.g., DTC trigger, ADC start, DAC update). It eliminates CPU intervention for time-critical sequences-specified in Section 1.1 "Event Link Controller (ELC)" of R01DS0053EJ0340.
What is the pin-compatible migration path from the R5F104JEAFA#V0 to higher-memory variants?
The R5F104JEAFA#V0 (256 KB flash) shares identical 52-pin LQFP-0.65 mm package and pinout with R5F104JJAFA#V0 (256 KB), R5F104JKAFA#V0 (384 KB), and R5F104JLAFA#V0 (512 KB)-all listed in Table 1-1 of R01DS0053EJ0340. No PCB redesign is needed for flash capacity upgrades within this pin-compatible family.
R5F104JEAFA#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-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:
- 38
- 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:
R5F104JEAFA#V0 FAQ
1.How can I place an order for R5F104JEAFA#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104JEAFA#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 R5F104JEAFA#V0 reliable?
The price and inventory of R5F104JEAFA#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104JEAFA#V0 is usually 5 days.
3.What payment methods are accepted for R5F104JEAFA#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104JEAFA#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104JEAFA#V0?
R5F104JEAFA#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104JEAFA#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 R5F104JEAFA#V0?
For technical support, including R5F104JEAFA#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104JEAFA#V0 requirements.
6.How does Aetrix verify that R5F104JEAFA#V0 is sourced from the original manufacturer or authorized distributors?
All R5F104JEAFA#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 R5F104JEAFA#V0 meets industry standards.
7.What is the process for return or replacement of R5F104JEAFA#V0?
All R5F104JEAFA#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104JEAFA#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 R5F104JEAFA#V0 part is unused and in its original packaging.
Return procedure for R5F104JEAFA#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F104JEAFA#V0 Tags
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