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Renesas R5F104LJALA#U0
- Part No.:
- R5F104LJALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFLGA
- Datasheet:
-
R5F104LJALA#U0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64FLGA
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
R5F104LJALA#U0 from Renesas is a 64-pin FLGA-packaged 16-bit RL78/G14 microcontroller with 192 KB flash, 8 KB data flash, 20 KB RAM, and operation from 1.6 V to 5.5 V. It delivers 44 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (0.60 μA RTC+LVD), and integrates 12-bit RTC, 10-bit ADC (20 ch), UART/LIN, I²C, CSI, and 16-bit timers for embedded control in industrial sensor nodes and battery-powered HMI.
For engineers reviewing the R5F104LJALA#U0 datasheet, R5F104LJALA#U0 pinout, R5F104LJALA#U0 application, or R5F104LJALA#U0 equivalent, key selection criteria include its 64-pin 5×5 mm FLGA package, -40°C to +105°C industrial-grade temperature range (G-grade), integrated data flash with 1M rewrite cycles, and hardware event linking via ELC for deterministic peripheral coordination.
Technical Context
The R5F104LJALA#U0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz). Its Event Link Controller (ELC) enables direct hardware-triggered peripheral activation without CPU intervention, reducing latency and power consumption in real-time control loops.
It integrates a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes activated by 19–26 interrupt sources, plus background operation (BGO) for concurrent code execution during data flash rewriting - critical for firmware-over-the-air updates in field-deployed devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing for real-time control tasks |
| Max Clock Speed | 32 MHz (44 DMIPS); sufficient for motor control, sensor fusion, and LIN bus communication |
| Flash Memory | 192 KB code flash + 8 KB data flash; supports self-programming with boot swapping and flash shield window |
| RAM | 20 KB on-chip RAM; accommodates real-time buffers, stack, and firmware variables for mid-complexity applications |
| Supply Voltage | 1.6 V to 5.5 V; allows direct interface with 1.8 V, 3.3 V, and 5 V peripherals without level shifters |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.60 μA with RTC+LVD active); extends battery life in always-on monitoring systems |
| ADC | 10-bit resolution, 20-channel analog input with internal 1.45 V reference and temperature sensor; enables precision sensor signal acquisition |
| RTC | 12-bit interval timer + calendar RTC (99-year range, alarm, clock correction); provides accurate timekeeping without external components |
Pinout & Package
Package: 64-pin FLGA (5 × 5 mm, 0.5 mm pitch), lead-free, moisture-sensitive level 3 (MSL3), suitable for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/P01 | TxD1/RxD1, TI00/TO00 | Full-duplex UART channel with timer capture/compare; supports serial communication and pulse-width measurement |
| P10–P17 | SPI/I²C/UART/CSI multi-function pins | Configurable serial interfaces with peripheral I/O redirection; enables flexible peripheral mapping without PCB redesign |
| P20–P27 | ANI0–ANI7, AVREFP/AVREFM | 8-channel analog input with dedicated reference pins; supports ratiometric sensing and noise-rejecting differential measurements |
| P30/P31 | INTP3/RTC1HZ, TI03/TO03 | Dedicated RTC output and timer I/O; provides precise 1 Hz timing signal and PWM generation for system clocks or actuators |
| P60/P61 | SCLA0/SDAA0 | Hardware I²C interface with SMBus compatibility; enables reliable communication with EEPROMs, sensors, and PMICs |
| P121/P122 | X1/X2 | Crystal oscillator inputs for 32.768 kHz RTC crystal; ensures ±20 ppm accuracy for time-critical applications |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external supervisor ICs or manual reset buttons |
| VDD/VSS | Power supply and ground | Dual power domains support independent analog/digital supply filtering; reduces noise coupling in mixed-signal operation |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Links 19–26 peripheral events directly to functions like ADC start or timer clear - eliminates CPU polling and ISR overhead |
| Data Flash BGO | Executes program code while rewriting 8 KB data flash - enables seamless firmware updates and parameter storage during runtime |
| On-chip LVD | 14-level voltage detector with interrupt/reset options - protects against brown-out corruption in wide-input industrial power supplies |
| Hardware DTC | Transfers data between memory/peripherals without CPU involvement - frees CPU for computation in sensor aggregation tasks |
| Multi-speed oscillator | Configurable high-accuracy on-chip oscillator (1–64 MHz, ±1.0%); eliminates external crystal cost and board space for non-RTC clocks |
| Peripheral I/O redirection | Reassigns functions like UART or SPI to alternate pins via PIOR registers - improves layout flexibility and avoids signal congestion |
Applications
| Industrial Sensor Node | Smart HVAC Controller |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity/pressure node with local logging and BLE gateway interface. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, RTC-timed sampling, data flash logging, and low-power sleep scheduling. Use Value: 0.60 μA STOP mode with RTC+LVD extends 2xAA battery life to >5 years; 20-channel ADC supports multi-sensor analog front-end integration. | Use Scenario: Wall-mounted HVAC thermostat with display, fan control, and wired Modbus RTU communication. IC Role / Device Role / Timing Role: Central MCU handling UI responsiveness, PID loop execution, relay/SCR drive timing, and serial protocol stack. Use Value: 44 DMIPS at 32 MHz ensures sub-millisecond PID update rates; integrated LIN/UART supports legacy HVAC bus interoperability. |
| Programmable Logic Relay | Medical Infusion Pump Controller |
Use Scenario: DIN-rail mounted PLC module with digital I/O, analog inputs, and configurable logic sequencing. IC Role / Device Role / Timing Role: Real-time I/O processor executing ladder logic with deterministic scan cycle timing and hardware-triggered interrupts. Use Value: ELC-linked timer/ADC events enable <10 µs response to input changes; 192 KB flash stores multiple user programs and configuration sets. | Use Scenario: Portable infusion pump requiring precise motor control, safety monitoring, and battery management. IC Role / Device Role / Timing Role: Safety-critical controller managing stepper motor timing, occlusion detection (ADC), battery voltage supervision (LVD), and watchdog-checked state machine. Use Value: Dual watchdog (main + dedicated low-speed oscillator) meets IEC 62304 Class C requirements; 1M-cycle data flash stores calibration and usage logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104LLALA#U0 | Same FLGA-64 package, 384 KB flash, 32 KB RAM, identical peripherals and pinout | Higher memory capacity supports larger RTOS images or complex protocol stacks (e.g., MQTT over TLS) | Select when firmware size exceeds 192 KB or additional RAM is needed for dynamic allocation |
| R5F104LJAFB#30 | Same 192 KB/8 KB/20 KB configuration but in 64-pin LFQFP (10×10 mm, 0.5 mm pitch) | LFQFP offers easier prototyping and rework vs. FLGA; requires different PCB footprint and stencil | Choose for development boards or low-volume production where soldering reliability outweighs size constraints |
Compared with R5F104LLALA#U0, the R5F104LJALA#U0 trades flash/RAM headroom for cost optimization in fixed-function designs; versus R5F104LJAFB#30, it delivers 40% smaller board area at the expense of rework complexity - critical for space-constrained medical or portable industrial enclosures.
Availability
R5F104LJALA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic relays requiring stable component supply across extended product lifecycles.
Supply support for R5F104LJALA#U0 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 embedded applications - balancing performance, integration, and energy efficiency for industrial controls, home appliances, and sensor edge devices.
FAQ
What is the operating temperature range for the R5F104LJALA#U0?
The R5F104LJALA#U0 is rated for industrial operation from -40°C to +105°C (G-grade), validated across the full voltage range (1.6 V to 5.5 V). This specification is confirmed in the RL78/G14 datasheet Rev. 3.70, Section 1.1, and applies specifically to the R5F104LJALA#U0 ordering part number with FLGA packaging and G-field marking.
Does the R5F104LJALA#U0 support in-system programming via standard interfaces?
Yes, the R5F104LJALA#U0 supports on-chip debug and self-programming via the single-wire debug interface (SWD) using the Renesas E2 emulator or compatible tools. It implements flash shield window and block erase prohibition for secure firmware updates - all documented in the R5F104LJALA#U0-specific memory map and flash programming sections of the RL78/G14 datasheet.
How many serial communication interfaces does the R5F104LJALA#U0 integrate?
The R5F104LJALA#U0 integrates up to 4 UART channels (with LIN support), 4–10 I²C/simplified I²C channels, and 3–8 CSI (SPI-compatible) channels - with exact counts dependent on pin multiplexing. For the R5F104LJALA#U0's 64-pin FLGA package, it supports 4 UART, 4 I²C, and 3 CSI channels as confirmed in Table 1-1 and Section 1.1 "Serial Interfaces" of the RL78/G14 datasheet.
What is the maximum ADC sampling rate achievable on the R5F104LJALA#U0?
The R5F104LJALA#U0 ADC achieves a maximum conversion time of 1.2 µs per 10-bit sample (833 kSPS) under optimal conditions: VDD ≥ 2.7 V, internal clock source, and single-channel continuous mode. This value is specified in the "A/D Converter Electrical Characteristics" table (Section 21.3) of the RL78/G14 datasheet and applies directly to the R5F104LJALA#U0 variant.
Is the R5F104LJALA#U0 pin-compatible with other RL78/G14 family members in the same package?
Yes, the R5F104LJALA#U0 shares identical pinout and electrical characteristics with all other RL78/G14 variants in the 64-pin FLGA package (e.g., R5F104LKALA#U0, R5F104LLALA#U0), as verified in Section 1.3.6 Pin Configuration and Table 1-1 of the RL78/G14 datasheet. Function allocation per pin is consistent across this package group, enabling memory-size-based upgrades without PCB revision.
R5F104LJALA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-WFLGA
- Series:
- RL78/G14
- Packaging:
- Tray
- 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:
- 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:
R5F104LJALA#U0 FAQ
1.How can I place an order for R5F104LJALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104LJALA#U0 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 R5F104LJALA#U0 reliable?
The price and inventory of R5F104LJALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104LJALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F104LJALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104LJALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104LJALA#U0?
R5F104LJALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104LJALA#U0 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 R5F104LJALA#U0?
For technical support, including R5F104LJALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104LJALA#U0 requirements.
6.How does Aetrix verify that R5F104LJALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F104LJALA#U0 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 R5F104LJALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F104LJALA#U0?
All R5F104LJALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104LJALA#U0, 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 R5F104LJALA#U0 part is unused and in its original packaging.
Return procedure for R5F104LJALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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