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Renesas R5F11FLJANA#20
- Part No.:
- R5F11FLJANA#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
R5F11FLJANA#20.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:320
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Product details
Overview
R5F11FLJANA#20 from Renesas Electronics is a 16-bit RL78/G1H microcontroller with 256 KB Flash, 24 KB RAM, and 8 KB data flash, operating at up to 32 MHz. It integrates 10-bit ADC (6 channels), dual UART/I²C/CSI interfaces, RTC, and 9×16-bit timers - deployed in battery-powered wireless sensor nodes supporting 920 MHz ISM-band radio communication.
For engineers reviewing the R5F11FLJANA#20 datasheet, R5F11FLJANA#20 pinout, R5F11FLJANA#20 application, or R5F11FLJANA#20 equivalent, key selection criteria include its 1.8–3.6 V supply range, HVQFN64 package with 0.5 mm pitch, integrated sub-clock oscillator, low-voltage detection, and real-time clock for time-stamped telemetry in constrained embedded systems.
Technical Context
The R5F11FLJANA#20 implements the RL78 CPU core with hardware multiplier and DMA controller, enabling efficient signal processing in ultra-low-power operation modes including HALT and STOP. Its on-chip oscillators support high-speed (1–32 MHz) and low-speed (15 kHz) clock sources, with sub-clock input for RTC accuracy.
It features seven external interrupt pins, 41 general-purpose I/O ports with programmable pull-up/down, and dedicated peripheral function pins for CSI, UART, I²C, and ADC - all mapped to the 64-pin HVQFN package with 9×9 mm² footprint and 1 mm max mounting height.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CPU with hardware multiplier and DMA |
| Max Clock Frequency | 32 MHz - enables real-time control loop execution ≤31.25 ns per instruction cycle |
| Memory Configuration | 256 KB Flash (program), 24 KB RAM, 8 KB data flash - supports firmware updates and parameter logging without external storage |
| Analog Peripherals | 10-bit ADC ×6 channels - provides sufficient resolution for sensor signal acquisition in environmental monitoring |
| Digital Interfaces | UART ×2, I²C ×2, CSI ×4 - enables concurrent host MCU communication and sensor/actuator bridging |
| Operating Voltage | 1.8–3.6 V - compatible with single-cell Li-ion, LiPo, or dual-AA battery power rails |
| Temperature Range | −40 to +85 °C ambient - qualified for industrial and outdoor deployment |
Pinout & Package
HVQFN-64 package: 9×9 mm² body, 0.5 mm terminal pitch, Ni/Pd/Au-plated Cu alloy leads, 1 mm max mounting height, 0.21 g typical mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.8–3.6 V supply domains with dedicated analog/digital ground separation |
| XT1, XT2 | Sub-clock crystal terminals | Supports 32.768 kHz crystal for ±20 ppm RTC accuracy across temperature |
| P00–P07, P10–P17, etc. | General-purpose I/O ports | 41 total GPIOs with selectable drive strength, interrupt capability, and peripheral function multiplexing |
| AD0–AD5 | Analog input channels | 6 dedicated ADC input pins with internal reference and sample-and-hold circuitry |
| CSI0–CSI3, UART0/1, I²C0/1 | Serial interface signals | Hardware-peripheral mapped pins with configurable baud rate, clock polarity, and address mode |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | HALT/STOP modes with wake-up via external interrupt or RTC alarm - extends battery life in intermittent-sensing applications |
| Integrated RTC with sub-clock | Accurate timekeeping independent of main system clock - enables scheduled sensor sampling and timestamped data transmission |
| On-chip debug interface | Fine-resolution trace and breakpoint support via single-wire SWD - reduces debug probe footprint and BOM cost |
| High-voltage detection | Programmable low-voltage detection (LVD) with 8 selectable thresholds - prevents erratic operation during brown-out conditions |
| Radio coexistence support | Dedicated GPIO control and timing registers for synchronizing 920 MHz RF transceivers - minimizes interference in ISM-band wireless nodes |
Applications
| Wireless Sensor Node | Industrial Telemetry Gateway |
|---|---|
Use Scenario: Battery-powered environmental monitor transmitting temperature/humidity data over 920 MHz ISM band. IC Role / Device Role / Timing Role: Main controller managing sensor readout, ADC conversion, RTC-triggered transmission, and RF interface timing. Use Value: Integrated 32.768 kHz sub-clock and low-power STOP mode enable multi-year battery life with hourly reporting. | Use Scenario: Edge gateway aggregating Modbus RTU data from field devices and forwarding via LPWAN. IC Role / Device Role / Timing Role: Protocol translation engine with dual UARTs handling serial device polling and RF packet framing. Use Value: 24 KB RAM buffers multiple Modbus transactions while 256 KB Flash stores protocol stack and firmware updates. |
| Smart Meter Interface Module | Asset Tracking Beacon |
Use Scenario: Pulse-counting interface between mechanical utility meter and NB-IoT modem. IC Role / Device Role / Timing Role: Event-driven counter with external interrupt capture and RTC-based report scheduling. Use Value: Seven external interrupt pins support simultaneous pulse inputs from gas/water/electric meters without external logic. | Use Scenario: GPS-denied indoor asset tracker using RSSI-based proximity detection and BLE-to-920 MHz relay. IC Role / Device Role / Timing Role: Dual-role controller running BLE HCI stack and 920 MHz packet scheduler with precise timing alignment. Use Value: Hardware CSI and UART peripherals allow concurrent BLE host and RF transceiver control with deterministic latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11FPJANA#20 | Same RL78/G1H family, identical 64-pin HVQFN package, but with 192 KB Flash and 16 KB RAM | Limited firmware complexity and smaller data logging requirements | Select when full 256 KB Flash and 24 KB RAM of R5F11FLJANA#20 are not required to reduce cost |
| R5F11FBJANA#20 | RL78/G1H variant with 128 KB Flash, 12 KB RAM, and no data flash; same peripheral set and pinout | No need for in-field parameter retention or firmware update rollback capability | Choose when 8 KB data flash functionality is unnecessary and lower memory density suffices |
Compared with R5F11FPJANA#20 and R5F11FBJANA#20, the R5F11FLJANA#20 offers the highest on-chip memory capacity and data flash persistence in the RL78/G1H HVQFN-64 lineup - critical for complex wireless protocol stacks and long-term sensor calibration storage.
Availability
R5F11FLJANA#20 is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial telemetry gateways, smart meter interfaces, and asset tracking beacons requiring stable component supply and long-term lifecycle support.
Supply support for R5F11FLJANA#20 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G1H group targets ultra-low-power, cost-sensitive embedded applications requiring rich analog integration, real-time control, and wireless connectivity support - exemplified by the R5F11FLJANA#20's 920 MHz radio coexistence features.
FAQ
What is the maximum operating frequency of the R5F11FLJANA#20?
The R5F11FLJANA#20 operates at a maximum CPU frequency of 32 MHz using its on-chip high-speed oscillator or external crystal. This speed is fully supported across the entire 1.8–3.6 V supply range and −40 to +85 °C ambient temperature, enabling deterministic real-time response for time-critical sensor and communication tasks within the R5F11FLJANA#20 design envelope.
Does the R5F11FLJANA#20 include a real-time clock (RTC)?
Yes, the R5F11FLJANA#20 integrates a hardware RTC with dedicated 32.768 kHz sub-clock input support. It maintains accurate timekeeping during STOP mode, supports alarm interrupts, and retains time data across power cycles when backed by a capacitor or small battery - a core capability confirmed in the RL78/G1H hardware manual for the R5F11FLJANA#20.
What package type and pin count does the R5F11FLJANA#20 use?
The R5F11FLJANA#20 uses a 64-pin HVQFN package (JEITA code P-HVQFN64-9x9-0.50) with 9×9 mm² body size, 0.5 mm lead pitch, and 1 mm maximum mounting height. This package is mechanically and electrically identical across all RL78/G1H variants including the R5F11FLJANA#20, enabling layout reuse in multi-variant designs.
How much Flash and RAM memory does the R5F11FLJANA#20 provide?
The R5F11FLJANA#20 provides 256 KB of on-chip Flash memory for program code, 24 KB of RAM for runtime variables and stack, and 8 KB of data Flash for nonvolatile parameter storage. These memory capacities are fixed and verified for the R5F11FLJANA#20 part number in Renesas' official RL78/G1H datasheet revision 0.50.
Which serial interfaces are available on the R5F11FLJANA#20?
The R5F11FLJANA#20 includes two UART channels, two I²C interfaces, and four CSI (Clock Synchronous Serial Interface) modules. All are hardware-peripheral blocks with independent registers and dedicated pins mapped in the 64-pin HVQFN package - confirmed in the R5F11FLJANA#20 pin function table and peripheral overview section of the RL78/G1H user's manual.
R5F11FLJANA#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- RL78/G1H
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 41
- 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):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 6x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F11FLJANA#20 FAQ
1.How can I place an order for R5F11FLJANA#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11FLJANA#20 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 R5F11FLJANA#20 reliable?
The price and inventory of R5F11FLJANA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11FLJANA#20 is usually 5 days.
3.What payment methods are accepted for R5F11FLJANA#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11FLJANA#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11FLJANA#20?
R5F11FLJANA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11FLJANA#20 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 R5F11FLJANA#20?
For technical support, including R5F11FLJANA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11FLJANA#20 requirements.
6.How does Aetrix verify that R5F11FLJANA#20 is sourced from the original manufacturer or authorized distributors?
All R5F11FLJANA#20 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 R5F11FLJANA#20 meets industry standards.
7.What is the process for return or replacement of R5F11FLJANA#20?
All R5F11FLJANA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11FLJANA#20, 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 R5F11FLJANA#20 part is unused and in its original packaging.
Return procedure for R5F11FLJANA#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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