R5F10FLEDNA#U0 - 32MHz 16-Bit RL78 MCU | Renesas
MPN: R5F10FLEDNA#U0 ✓ ActiveR5F10FLEDNA#U0 Overview
A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals in one integrated circuit. The RL78 family belongs to the hierarchy of embedded microcontroller, processor, and semiconductor devices. Unlike a general-purpose host processor, an RL78 MCU is normally configured to monitor inputs, execute control logic, and operate peripherals within a larger appliance, instrument, controller, or embedded system. Renesas positions the RL78/G1E family around compact, low-power embedded control.
The R5F10FLEDNA#U0 combines a 32 MHz maximum clock with 64 KB flash and a 16-bit architecture. Its 64-HWQFN package provides 64 electrical positions in a compact 9 x 9 mm outline, while the exposed pad improves heat transfer from the integrated circuit to the PCB. The package format supports high-density assembly but requires careful land-pattern design, adequate copper beneath the exposed pad, and inspection of the very small lead pitch after soldering.
The FLEDNA#U0 ordering code identifies the 64-HWQFN configuration associated with the RL78/G1E device. This package variant is materially different from leaded or smaller QFN options because its exposed pad and 64-pin footprint determine PCB compatibility. Engineers should therefore treat package type, exposed-pad treatment, pin assignment, and electrical limits as the decisive replacement criteria rather than relying only on flash capacity and clock frequency.
Typical applications include industrial control modules, compact sensor hubs, building and appliance controllers, instrument panels, and low-power embedded equipment. The 32 MHz operating rate and 64 KB program memory allow the MCU to combine real-time control with protocol handling or state-machine logic. For battery-powered equipment, the final power budget should be evaluated at the application level because motor drive, sensor interfaces, and communication activity can dominate energy consumption even when the controller itself operates intermittently.
A robust design should allocate the exposed pad as a thermal and electrical land, follow the package drawing for solder-mask and paste geometry, and verify pin assignments against the manufacturer pin-description table before layout release. Decoupling should be placed directly at the appropriate supply pins, while unused inputs should be terminated according to the electrical requirements of those pins. Production firmware should also include brownout, watchdog, and clock-startup behavior appropriate to the end product.
This page consolidates the exact device identity, package information, sourcing structure, replacement considerations, and practical implementation guidance into an engineering-focused reference. It also distinguishes confirmed package-compatible options from broader functional alternatives, helping designers verify footprint, memory, timing, peripheral, temperature, and lifecycle requirements before committing to a substitution.
Drop-in alternatives for R5F10FLEDNA#U0 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with R5F10FLEDNA#U0 (same form factor and footprint).
R5F10FLEANA#U0
✅ Drop-InContact for price
View Datasheet →R5F10FLEDNA#YB1
✅ Drop-In📋 Reference alternative (not in catalog)
R5F10FLCDNA#U0
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →R5F10FLEDNA#U0
✅ Drop-InContact for price
View Datasheet →R5F10FLCDNA#U0
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →R5F10FLEDNA#U0 Maximum Ratings & Electrical Characteristics
| Product Type | 16-bit microcontroller |
| Product Series | RL78/G1E |
| Maximum CPU Frequency | 32 MHz |
| CPU Word Length | 16 bit |
| Flash Memory | 64 KB |
| Flash Organization | 64K x 8 |
| Package | 64-HWQFN (9 x 9 mm) |
| Exposed Pad | Present |
| Mounting Type | Surface mount |
R5F10FLEDNA#U0 64-hwqfn (9 x 9 mm) Pin Configuration Guide
Pin configuration for R5F10FLEDNA#U0 (64-hwqfn (9 x 9 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for R5F10FLEDNA#U0.
Refer to the datasheet for full pin configuration.
Typical Applications
R5F10FLEDNA#U0 is suitable for 6 applications: Compact Industrial Control Module, Building Automation Controller, Low-Power Sensor Hub, Appliance Control Board, Measurement and Instrument Control, User Interface and HMI Controller.
Compact Industrial Control Module
The R5F10FLEDNA#U0 fits compact control modules that coordinate digital inputs, outputs, and sequencing within a 32 MHz system budget. Its 16-bit RL78/G1E architecture and 64 KB flash provide enough space for a state machine, communication service, and safety checks without requiring an external program-memory device. The 64-HWQFN package also keeps the controller compact for DIN-rail, panel-mounted, or distributed equipment. During schematic design, verify the required timer channels, communication peripherals, supply limits, and pin multiplexing against the manufacturer datasheet. Provide a continuous thermal path beneath the exposed pad and decouple each supply group directly at its pins.
Recommended
Building Automation Controller
The R5F10FLEDNA#U0 is suitable for building-automation nodes that translate sensors and switches into lighting, HVAC, or access-control commands. Its 32 MHz operating rate supports responsive debouncing, event scheduling, and serial protocol handling, while 64 KB flash can hold application logic and configuration code. The small 9 x 9 mm HWQFN outline assists compact multi-function wall or ceiling modules. Confirm the exact UART, timer, I/O, and low-power modes in the manufacturer documentation before assigning pins. For reliable operation across long wiring runs, add appropriate input protection and define reset behavior for supply disturbances.
Recommended
Low-Power Sensor Hub
The R5F10FLEDNA#U0 can serve as the local controller in a battery- or bus-powered sensor hub that gathers measurements, filters them, and reports status. The 16-bit architecture assists with arithmetic and protocol framing, while the 64 KB flash provides room for calibration tables and application code. Its performance and package dimensions are well suited to compact multi-sensor assemblies. Evaluate the actual energy budget using the device's specified sleep and run currents, sensor load, communications duty cycle, and regulator efficiency. If the hub is battery-operated, use the lowest acceptable wake-up and communication rate rather than relying on the 32 MHz maximum clock as a power metric.
Recommended
Appliance Control Board
The R5F10FLEDNA#U0 is applicable to appliance controllers that coordinate relays, indicators, user inputs, and safety monitoring in a compact board area. A 32 MHz 16-bit RL78 core supports deterministic control tasks, and 64 KB flash supports a complete application layer for many appliance functions. The 64-HWQFN package enables automatic placement in dense production assemblies. Before design release, verify output-driver ratings, isolation requirements, watchdog behavior, brownout thresholds, and the maximum number of directly usable I/O pins. Use the exposed pad as a thermal land and follow the package drawing for paste and solder-mask clearances.
Recommended
Measurement and Instrument Control
The R5F10FLEDNA#U0 can coordinate measurements, calibration, display updates, and host communication in compact instrumentation. Its 16-bit word length and 32 MHz clock are useful for digital filtering and control-loop execution, while 64 KB flash can retain calibration coefficients and configuration data. The dense 64-HWQFN package helps minimize instrument front-panel area. Confirm the required ADC, timer, comparator, and serial-interface functions in the manufacturer datasheet because the headline MCU specifications do not describe every peripheral. Guard analog and digital grounds appropriately, and include power-supply filtering close to the device.
Recommended
User Interface and HMI Controller
The R5F10FLEDNA#U0 fits compact human-machine interfaces that combine button or touch input, display updates, status LEDs, and communications. The 32 MHz RL78/G1E processor can service interrupt-driven displays and serial peripherals, and the 64 KB program memory supports menu logic, glyph handling, and device configuration. Its 64-HWQFN outline preserves board area in wearable, panel, and countertop products. Verify whether the required display interface is available directly or must be implemented through a serial bridge, and check pin multiplexing before assigning bus signals. Apply controlled rise times and proper grounding to minimize switching noise or display-coupled errors.
Recommended
Recommended Products Summary
Engineering reference data for R5F10FLEDNA#U0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F10FLEANA#U0 | R5F10FLEDNA#YB1 | R5F10FLCDNA#U0 | R5F10FLEDNA#U0 |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 64-HWQFN (9 x 9 mm) | 64-QFN (9 x 9 mm) | 64-HWQFN | 64-HWQFN | 64-HWQFN (9 x 9 mm) |
| Processor Architecture | 16-bit RL78/G1E | 16-bit RL78/G1E | 16-bit RL78 | 16-bit RL78/G1E family | 16-bit RL78/G1E |
| Product Category | RL78/G1E general-purpose microcontroller | RL78/G1E general-purpose microcontroller | RL78 microcontroller | RL78/G1E microcontroller | RL78/G1E general-purpose microcontroller |
Key Differentiators
- Exact identified RL78/G1E configuration (vs R5F10FLEANA#U0)
- Confirmed 9 x 9 mm 64-HWQFN identity (vs R5F10FLEDNA#YB1)
- Maximum clock and memory stated together (vs R5F10FLCDNA#U0)
- Single canonical ordering identity (vs R5F10FLEDNA#U0)
Design Notes
Implement the 64-HWQFN footprint from the manufacturer package drawing, including the exposed-pad copper, solder-mask opening, paste stencil, and peripheral pad pattern. Place the exposed-pad thermal vias within the paste and mask constraints recommended for the package. Do not derive the land pattern from a generic 64-QFN drawing because pad length, pitch, and exposed-pad geometry can differ. Validate the assembled board under temperature cycling to detect solder-joint or voiding problems.
Place the required input and output capacitors directly across the appropriate supply pins, with the shortest possible current-loop area. Confirm capacitor voltage rating, effective capacitance at the operating frequency, and ESR requirements from the manufacturer datasheet. Route high-current return paths on inner or bottom layers rather than through the exposed pad unless the package guidance explicitly permits it. Verify brownout, reset, and power-sequencing behavior under the minimum and maximum input conditions used by the product.
Assign pins from the manufacturer pin-description table rather than from memory or a similarly named RL78 device. Check each candidate MCU for multiplexing, alternate-function, and package differences, especially when using 5 V-tolerant or peripheral-specific signals. Keep sensitive sensor inputs away from switching nodes and clock edges, and provide a quiet ground reference for analog measurements. Review the final layout for exposed-pad connectivity, test access, programming pins, and assembly inspection requirements.
Do not assume that an RL78/G1E device with 64 KB flash is an automatic drop-in replacement. The A, D, and YB1 ordering codes can alter temperature grade, packing, or other device attributes, and the R5F10FLEANA#U0 listing uses different memory wording. Compare package drawings, pin descriptions, supply limits, memory organization, peripheral assignments, and lifecycle status before substituting a part in production hardware.
Compliance Information
No product-specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations are identified in the product information. AEC-Q100 is not applicable to the standard industrial/commercial target configuration unless a separate automotive-qualified ordering code is selected.
