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Renesas R5F104LJAFB#V0
- Part No.:
- R5F104LJAFB#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F104LJAFB#V0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,878
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Product details
Overview
R5F104LJAFB#V0 from Renesas Electronics is a 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch), industrial-grade RL78/G14 16-bit microcontroller with 192 KB flash, 8 KB data flash, 20 KB RAM, and operation from −40°C to +85°C. It integrates a 32 MHz RL78 CPU core delivering 44 DMIPS, ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), and on-chip peripherals including 12-channel 10-bit ADC, dual DAC, RTC, and multiple serial interfaces (UART, I²C, CSI) for embedded control in resource-constrained environments.
For engineers reviewing the R5F104LJAFB#V0 datasheet, R5F104LJAFB#V0 pinout, R5F104LJAFB#V0 application, or R5F104LJAFB#V0 equivalent, key selection criteria include its 64-pin LFQFP-0.5mm package compatibility, 192 KB/8 KB/20 KB memory configuration, support for SNOOZE/HALT/STOP low-power modes, and integrated analog functions (ADC, DAC, comparator) enabling single-chip sensor interface and motor control in industrial automation and smart metering.
Technical Context
The R5F104LJAFB#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It supports multiply/divide/accumulate instructions and a 1 MB address space with four banks of 8-bit general-purpose registers.
Peripherals include Timer Array Unit (TAU) with up to 8 channels, 12-bit interval timer, calendar RTC with alarm/correction, watchdog timer, Data Transfer Controller (DTC), Event Link Controller (ELC), and up to 10-channel I²C/Simplified I²C - all optimized for deterministic real-time response and low-latency peripheral coordination without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 44 DMIPS @ 32 MHz |
| Flash / Data Flash / RAM | 192 KB code flash, 8 KB data flash (1M rewrite cycles), 20 KB SRAM |
| Supply Voltage | 1.6 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic and battery-powered operation |
| Power Consumption | 66 μA/MHz active; 0.60 μA in RTC+LVD-only mode - extends battery life in always-on sensing nodes |
| Analog Peripherals | 10-bit ADC (20 ch), dual 8-bit DAC (0–VDD output), 2-channel comparator with internal/external reference |
| Timers & Clock | TAU (8 ch), RTC (calendar, alarm, correction), 12-bit interval timer, high-accuracy on-chip oscillator (±1.0% from 1.8–5.5 V) |
| Serial Interfaces | 3–4 UART/LIN, 4–10 I²C/Simplified I²C, 3–8 CSI (SPI-compatible), all with independent clock sources |
Pinout & Package
Package: 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, industrial temperature grade (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P121 / X1 | Crystal input | Connects to external 32.768 kHz crystal for RTC accuracy and low-power clock source |
| P122 / X2 / EXCLK | Crystal output / external clock input | Drives crystal resonator or accepts external clock signal for system timing flexibility |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with external reset ICs |
| VDD / VSS | Power supply / ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; REGC requires 0.47–1 μF capacitor to VSS |
| P10–P17 | Multi-function serial I/O | Configurable as CSI, UART, I²C, or TRDIO - supports mixed protocol routing via PIOR registers |
| P00 / P01 | UART1 TX/RX + timer I/O | Primary full-duplex UART channel with TI00/TO00 timer capability for baud rate generation and pulse timing |
| P20–P27 | Analog input / reference | 20-channel ADC inputs with AVREFP/AVREFM differential reference pins for precision measurement |
| P140 / P147 | DAC output / VCOUT | Direct analog output pins supporting real-time DAC waveform generation and voltage-controlled oscillator interface |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-μA sleep states with selective peripheral wake-up - critical for battery-operated IoT endpoints |
| On-chip debug & self-programming | Supports flash shield window and boot swap for secure field firmware updates without external programmer |
| Background operation (BGO) | Allows CPU execution from flash while rewriting data flash - eliminates interrupt latency during parameter storage |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining (e.g., ADC conversion → DMA transfer → interrupt) reduces CPU load by >40% in sensor polling |
| Dual 8-bit DAC with real-time output | Generates synchronized analog waveforms (e.g., PWM-modulated DAC for motor current shaping) without CPU overhead |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
|
Use Scenario: Closed-loop speed/torque control of BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, managing gate drivers via PWM outputs, and sampling current/voltage sensors via 10-bit ADC. Use Value: Integrated 192 KB flash stores complex control firmware; dual DAC generates precise reference voltages for current sensing; RTC enables time-of-use billing synchronization. |
Use Scenario: Residential electricity meter with tariff switching, tamper detection, and RS-485 communication. IC Role / Device Role / Timing Role: System-on-chip handling metrology ADC sampling, EEPROM-less parameter storage in data flash, and LIN/UART-based PLC communication stack. Use Value: 8 KB data flash withstands 1M rewrites for daily log storage; LVD detects brown-out events; SNOOZE mode maintains RTC and metering counters at <1 μA during grid outage. |
| Building Automation Sensor Node | Medical Portable Monitor |
|
Use Scenario: Wireless CO₂/temperature/humidity node with BLE gateway interface and local display. IC Role / Device Role / Timing Role: Sensor hub aggregating I²C sensor data, performing calibration math, driving segment LCD, and managing low-power wireless MCU wake-up scheduling. Use Value: 20 KB RAM buffers multi-sensor fusion data; 10-bit ADC reads thermistor/NTC with internal 1.45 V reference; STOP mode extends coin-cell life to >5 years. |
Use Scenario: Battery-powered pulse oximeter with SpO₂/heart rate calculation and OLED display. IC Role / Device Role / Timing Role: Real-time signal processor for photodiode ADC sampling, LED drive timing via PWM/DAC, and clinical-grade algorithm execution. Use Value: Dual 8-bit DAC precisely modulates red/IR LED currents; RTC provides timestamped patient data; 1.6 V minimum VDD allows operation down to single alkaline cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104LHAFB#V0 | Same 64-pin LFQFP package, but 128 KB flash / 8 KB data flash / 16 KB RAM | Suitable for simpler control tasks with smaller firmware footprint and reduced RAM requirements | Select when application firmware size is <128 KB and real-time data buffering needs are ≤16 KB |
| R5F104LKAFB#V0 | Same 64-pin LFQFP package, with 384 KB flash / 8 KB data flash / 32 KB RAM | Targeted at feature-rich applications requiring larger OTA update partitions and extended data logging buffers | Choose when future firmware expansion headroom, dual-bank flash for safe updates, or >20 KB runtime data structures are required |
Compared with R5F104LHAFB#V0, the R5F104LJAFB#V0 provides 64 KB more flash and 4 KB more RAM for enhanced algorithm complexity and sensor fusion, while compared with R5F104LKAFB#V0 it offers cost-optimized memory sizing without over-provisioning - making it ideal for mid-tier industrial controllers balancing performance, BOM cost, and design longevity.
Availability
R5F104LJAFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, building automation sensor nodes, and portable medical monitoring requiring stable component supply across multi-year production cycles.
Supply support for R5F104LJAFB#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 family delivers true low-power 16-bit performance for general-purpose embedded control, targeting cost-sensitive, battery-operated, and thermally constrained applications where efficiency, integration, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating of the R5F104LJAFB#V0?
The R5F104LJAFB#V0 operates at up to 32 MHz with its RL78 CPU core, achieving 44 DMIPS performance. This is measured using the Dhrystone 2.1 benchmark under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects deterministic real-time throughput for control-loop execution and peripheral servicing in industrial applications.
Does the R5F104LJAFB#V0 support hardware debugging and in-system programming?
Yes, the R5F104LJAFB#V0 includes an on-chip debug interface compliant with Renesas E1/E20 emulators. It supports full read/write/erase access to flash memory, breakpoint setting, and real-time variable monitoring. Self-programming is enabled via the flash library with boot swap and flash shield window functions for secure firmware updates.
What are the analog capabilities of the R5F104LJAFB#V0, and how are they configured?
The R5F104LJAFB#V0 integrates a 10-bit successive-approximation ADC with up to 20 input channels, two 8-bit voltage-output DACs (P140/P147), and up to two comparators. ADC uses internal 1.45 V reference or external AVREFP/AVREFM; DACs output 0–VDD with real-time update capability; comparators support window/high-speed/low-speed modes and selectable internal/external references.
How does the R5F104LJAFB#V0 manage ultra-low power operation in battery-powered systems?
The R5F104LJAFB#V0 achieves ultra-low power via three dedicated modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (selected peripherals operate while CPU sleeps). In STOP mode with only RTC and LVD active, it consumes just 0.60 μA - enabling decade-long operation on primary lithium cells in remote monitoring devices.
Is the R5F104LJAFB#V0 pin-compatible with other RL78/G14 variants in the same 64-pin LFQFP package?
Yes, all RL78/G14 devices in the 64-pin LFQFP-0.5mm package (e.g., R5F104LHAFB#V0, R5F104LKAFB#V0, R5F104LJAFB#V0) share identical pinouts and electrical characteristics. Memory size, peripheral enablement, and some register defaults differ, but PCB layout and signal routing remain fully interchangeable across this package group.
R5F104LJAFB#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 48
- 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 12x8/10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104LJAFB#V0 FAQ
1.How can I place an order for R5F104LJAFB#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104LJAFB#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 R5F104LJAFB#V0 reliable?
The price and inventory of R5F104LJAFB#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104LJAFB#V0 is usually 5 days.
3.What payment methods are accepted for R5F104LJAFB#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104LJAFB#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104LJAFB#V0?
R5F104LJAFB#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104LJAFB#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 R5F104LJAFB#V0?
For technical support, including R5F104LJAFB#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104LJAFB#V0 requirements.
6.How does Aetrix verify that R5F104LJAFB#V0 is sourced from the original manufacturer or authorized distributors?
All R5F104LJAFB#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 R5F104LJAFB#V0 meets industry standards.
7.What is the process for return or replacement of R5F104LJAFB#V0?
All R5F104LJAFB#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104LJAFB#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 R5F104LJAFB#V0 part is unused and in its original packaging.
Return procedure for R5F104LJAFB#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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