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Renesas R5F104JEAFA#50
- Part No.:
- R5F104JEAFA#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F104JEAFA#50.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,120
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Product details
Overview
R5F104JEAFA#50 from Renesas is a 52-pin LQFP-0.65mm, industrial-grade RL78/G14 16-bit MCU with 96 KB flash, 8 KB data flash, 12 KB RAM, 10-bit ADC (16 channels), and integrated RTC/LVD. It operates from 1.6–5.5 V at -40 to +85°C and delivers 44 DMIPS at 32 MHz for low-power sensor interface and motor control applications.
For engineers reviewing the R5F104JEAFA#50 datasheet, R5F104JEAFA#50 pinout, R5F104JEAFA#50 application, or R5F104JEAFA#50 equivalent, key selection criteria include its 52-pin LQFP package, 96 KB/8 KB/12 KB memory configuration, 16-channel 10-bit ADC, real-time clock with calendar, and support for UART, I²C, and CSI serial interfaces in industrial embedded designs.
Technical Context
The R5F104JEAFA#50 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and variable instruction timing (0.03125 µs @ 32 MHz to 30.5 µs @ 32.768 kHz). It integrates a Data Transfer Controller (DTC) for autonomous memory transfers and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral event routing without CPU intervention.
Its power management includes HALT, STOP, and SNOOZE modes, achieving 66 µA/MHz active current and 0.60 µA RTC+LVD retention. The high-accuracy on-chip oscillator supports ±1.0% stability across 1.8–5.5 V and -20 to +85°C, eliminating external crystal dependency for many timing-critical functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/divide instructions |
| Max Operating Frequency | 32 MHz - delivers 44 DMIPS for real-time control loop execution |
| Flash Memory | 96 KB code flash - sufficient for complex firmware with bootloader and OTA update space |
| Data Flash | 8 KB - supports 1,000,000 write cycles for parameter storage with background operation |
| RAM | 12 KB on-chip SRAM - accommodates stack, heap, and real-time buffers for multi-tasking |
| ADC | 10-bit resolution, 16 input channels - enables simultaneous monitoring of sensors, voltage rails, and temperature |
| RTC | Calendar-mode RTC with alarm and clock correction - provides accurate timekeeping without external components |
| Supply Voltage | 1.6–5.5 V - allows direct battery operation (e.g., 3×AA, Li-ion, or supercapacitor backup) |
Pinout & Package
Package: 52-pin LQFP (10 × 10 mm, 0.65 mm pitch), RoHS-compliant, industrial temperature grade (-40 to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit; timer input; debug trigger source - enables dual-role signal routing |
| P01 | RxD1 / TO00 / TRGCLKB | Primary UART receive; timer output; secondary debug trigger - supports full-duplex comms and timing sync |
| P10–P15 | CSI/I²C/UART channels | Configurable serial interfaces - allow flexible peripheral connectivity without pin conflicts |
| P16/P17 | INTP5/INTP4, TI01/TI02, TO01/TO02 | Input capture and PWM output - supports motor phase control and encoder counting |
| P20–P27 | ANI0–ANI7 / AVREFP/AVREFM | 8 analog inputs with dedicated reference pins - ensures stable ADC measurements across supply variations |
| P30/P31 | INTP3/INTP4, RTC1HZ, SCK00/SCL00, TI03/TO03 | Real-time clock output and timer I/O - enables precise time-triggered events and PWM generation |
| P120/P147 | VCOUT0/VCOUT1 | Voltage comparator outputs - provide fast overvoltage/undervoltage detection with hardware response |
| RESET / REGC / VDD / VSS | Reset, regulator capacitor, power | Dedicated low-noise power regulation path - ensures reliable startup and brown-out immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power modes | HALT (66 µA/MHz), STOP (0.60 µA), and SNOOZE - extend battery life in portable and remote devices |
| Self-programmable flash | Boot swapping and flash shield window - enable secure field firmware updates without external programmer |
| Background data flash rewrite | BGO mode allows CPU to execute from flash while rewriting data flash - eliminates interrupt latency during logging |
| Peripheral event linking | ELC routes 19–26 event signals directly between peripherals - reduces CPU load and jitter in time-critical paths |
| Hardware DTC | Supports block, repeat, and chain transfer modes triggered by interrupts - offloads DMA-like tasks from CPU |
| Integrated voltage detector | LVD with 14 selectable thresholds and interrupt/reset options - provides configurable brown-out protection |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and air quality data every 10 seconds. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC conversion, RTC-timed data logging, and UART transmission to gateway. Use Value: 0.60 µA STOP mode extends 2xAA battery life beyond 5 years; 16-channel ADC supports multi-sensor integration on single chip. | Use Scenario: Washing machine main board managing motor drive, water valve, heater, and user interface. IC Role / Device Role / Timing Role: System coordinator handling PWM motor control, relay sequencing, fault detection, and display refresh via SPI. Use Value: 44 DMIPS at 32 MHz enables real-time PID loop execution; integrated LVD prevents erratic behavior during line dips. |
| Energy Meter Interface | Building Automation Controller |
Use Scenario: Sub-metering unit interfacing with shunt-based current sensors and optical pulse inputs from utility meters. IC Role / Device Role / Timing Role: Precision measurement front-end with 10-bit ADC oversampling, pulse counting, and isolated RS-485 communication. Use Value: AVREFP/AVREFM pins stabilize ADC reference under varying supply; RTC calendar enables tariff-based energy logging. | Use Scenario: HVAC zone controller regulating damper position, fan speed, and temperature setpoints via BACnet MS/TP. IC Role / Device Role / Timing Role: Protocol-aware edge node running Modbus RTU over UART and managing local I/O expansion via I²C. Use Value: Multiple UART/I²C/CSI channels eliminate external bus expanders; ELC links timer events to GPIO toggles for precise fan PWM timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104JGAFA#50 | 128 KB flash, 16 KB RAM, same 52-pin LQFP package and peripheral set | Supports larger firmware images and deeper task stacks; identical pinout and software compatibility | Select when firmware size exceeds 96 KB or additional RAM is required for protocol stacks |
| R5F104JDAFA#50 | 48 KB flash, 5.5 KB RAM, same package and core features | Suitable for cost-sensitive, function-limited implementations; reduced memory footprint | Choose for simpler control tasks where 48 KB flash suffices and BOM cost is critical |
Compared with R5F104JGAFA#50 and R5F104JDAFA#50, the R5F104JEAFA#50 offers optimal balance of memory (96 KB flash/12 KB RAM), low-power capability, and industrial temperature range - making it ideal for mid-complexity embedded systems requiring field-upgradable firmware and long battery life.
Availability
R5F104JEAFA#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control, and building automation controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R5F104JEAFA#50 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 cost-sensitive, ultra-low-power general-purpose applications - designed to replace legacy 8-bit MCUs while delivering 16-bit performance, integrated analog, and robust industrial qualification.
FAQ
What is the operating temperature range for the R5F104JEAFA#50?
The R5F104JEAFA#50 is rated for industrial operation from -40°C to +85°C, as indicated by the 'D' suffix in its part number designation. This range ensures reliable performance in factory automation, HVAC, and outdoor metering environments where ambient conditions exceed consumer-grade limits. The device maintains specified timing, ADC accuracy, and flash endurance across this full span without derating.
Does the R5F104JEAFA#50 include an integrated real-time clock with calendar function?
Yes, the R5F104JEAFA#50 integrates a full-featured real-time clock (RTC) supporting calendar mode for years, months, days, hours, minutes, and seconds; alarm interrupt; and automatic clock correction. It operates independently in STOP mode using the 32.768 kHz subsystem clock, enabling time-stamped data logging and scheduled wake-up without external components or host CPU involvement.
How much data flash memory does the R5F104JEAFA#50 provide, and what is its endurance rating?
The R5F104JEAFA#50 provides 8 KB of dedicated data flash memory, rated for 1,000,000 write/erase cycles (typical) across the full 1.8–5.5 V supply range. It supports background operation (BGO), allowing program execution from code flash while rewriting data flash - essential for non-volatile parameter storage in field-deployed equipment.
What serial communication interfaces are available on the R5F104JEAFA#50?
The R5F104JEAFA#50 includes three UART channels (one with LIN support), up to ten I²C/simplified I²C channels, and three to eight CSI (SPI-compatible) channels. These interfaces are multiplexed across GPIO pins and configurable via peripheral I/O redirection registers, enabling flexible peripheral connectivity without hardware redesign.
Is the R5F104JEAFA#50 pin-compatible with other RL78/G14 variants in the same package?
Yes, all RL78/G14 devices in the 52-pin LQFP-0.65mm package - including R5F104JxAFA#50 variants - share identical pinouts and electrical characteristics. This allows direct substitution within the same memory/feature tier (e.g., R5F104JEAFA#50 ↔ R5F104JGAFA#50) without PCB changes, provided firmware accommodates differences in flash/RAM size and peripheral enablement.
R5F104JEAFA#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- RL78/G14
- Packaging:
- Bulk
- Product Status:
- Active
- 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#50 FAQ
1.How can I place an order for R5F104JEAFA#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104JEAFA#50 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#50 reliable?
The price and inventory of R5F104JEAFA#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104JEAFA#50 is usually 5 days.
3.What payment methods are accepted for R5F104JEAFA#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104JEAFA#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104JEAFA#50?
R5F104JEAFA#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104JEAFA#50 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#50?
For technical support, including R5F104JEAFA#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104JEAFA#50 requirements.
6.How does Aetrix verify that R5F104JEAFA#50 is sourced from the original manufacturer or authorized distributors?
All R5F104JEAFA#50 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#50 meets industry standards.
7.What is the process for return or replacement of R5F104JEAFA#50?
All R5F104JEAFA#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104JEAFA#50, 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#50 part is unused and in its original packaging.
Return procedure for R5F104JEAFA#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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