R5F51115ADLF#UA - 32-bit RX111 MCU 128KB Flash USB | Renesas
Référence : R5F51115ADLF#UA ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.78 | $57,80 |
| 100 | $5.11 | $511,00 |
| 500 | $4.55 | $2 275,00 |
| 1 000 | $4.02 | $4 020,00 |
R5F51115ADLF#UA Présentation
What is an RX111 microcontroller? The RX111 Group is Renesas' low-power 32-bit MCU family built on the RXv1 core, an evolution of the RX architecture that combines deterministic real-time response with sub-microamp standby current. The RX111 sits in the broader hierarchy RX sub-family -> 32-bit RISC microcontroller -> embedded MCU -> semiconductor. It targets battery-powered IoT endpoints and USB-connected peripherals where both processing headroom and deep-sleep efficiency are required, with Cortex-M-class competitors positioned on the power-vs-cost boundary.
Key features of the R5F51115ADLF#UA include 128 KB Flash with code-flash protection, 16 KB SRAM, 8 KB data flash (work flash), 12-bit A/D converter with up to 14 channels, a 12-bit D/A converter, multiple low-power modes (Sleep, Deep Sleep, Software Standby), a DMA controller (DTMD), and a wide peripheral set including SCI, RSPI, and USB 2.0 FS. Operating from 1.8 V to 3.6 V across -40 C to +85 C (consumer D-version), it draws microamp-level current in software-standby with RTC running.
Architecturally the RXv1 core is a Harvard-style 32-bit CISC/RISC hybrid with single-cycle multiply, hardware divider, and a tightly-coupled interrupt controller achieving 50 DMIPS / 1.25 CoreMark per MHz. Renesas' peripheral IP is reused across the RX family for software portability, while the integrated USB 2.0 FS PHY eliminates the external transceiver cost required by many competing Cortex-M0+ designs.
Typical applications include USB peripherals (HID, CDC/ACM, Mass Storage), low-power IoT sensor nodes, consumer health devices, smart-home hubs with USB debug ports, industrial bar-code scanners, and battery-powered measurement instruments. The 14-channel 12-bit ADC plus USB makes the R5F51115ADLF#UA particularly attractive for compact instruments that stream analog samples to a host over USB while running for months on a single CR-series coin cell.
When designing with this part, engineers should note that the FLGA-64 package does not expose pins on a standard 0.5 mm-pitch hand-solderable outline; reflow assembly with a stencil is mandatory, and the package exposes a central thermal pad that should be soldered for mechanical reliability. Firmware development uses the Renesas e2 studio IDE with GCC-RX or the CC-RX compiler.
This page synthesizes distributor stock and pricing, RX111 same-family and cross-vendor drop-in alternatives, USB firmware considerations, and practical design notes for low-power USB peripherals not found on a single manufacturer datasheet. Availability is confirmed across DigiKey, Mouser, LCSC, and Octopart as of 2026-10-10.
Alternatives de remplacement direct pour R5F51115ADLF#UA — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
R5F51115ADLF#GA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5F51114ADLF#UA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5F51116ADLF#UA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5F51113ADLF#UA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5F51115ADLF#UA Valeurs maximales et caractéristiques électriques
| Core | RXv1 (32-bit, Harvard) |
| Maximum Operating Frequency | 32 MHz |
| Performance | 50 DMIPS (1.25 CoreMark per MHz) |
| Program Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Data Flash / Work Flash | 8 KB |
| Supply Voltage (VCC) | 1.8 V to 3.6 V |
| Plage de température de fonctionnement | -40 C to +85 C |
| Boîtier | 64-FLGA (5x5 mm) |
| USB Interface | USB 2.0 Full-Speed device / host / OnTheGo |
| A/D Converter | 12-bit, up to 14 channels |
| D/A Converter | 12-bit |
| DMA Controller (DTC/DMAC) | Yes |
| Communication Peripherals | SCI, RSPI, USB, I2C |
| Low-Power Modes | Sleep, Deep Sleep, Software Standby with RTC |
| Type de montage | Surface Mount (reflow only) |
| Statut RoHS | Compliant |
Guide de configuration des broches du R5F51115ADLF#UA 64-flga (5x5 mm)
Configuration des broches du R5F51115ADLF#UA (boîtier 64-flga (5x5 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour R5F51115ADLF#UA.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
R5F51115ADLF#UA convient pour 6 applications: USB HID / Consumer Peripherals, Low-Power IoT Sensor Nodes, Industrial Barcode Scanners, Battery-Powered Measurement Instruments, Smart Home Hubs with USB Debug, Automotive Diagnostic Adapters.
USB HID / Consumer Peripherals
The R5F51115ADLF#UA's integrated USB 2.0 Full-Speed Device/Host/OTG controller with internal PHY makes it ideal for USB HID peripherals such as keyboards, mice, game controllers, barcode scanners, and USB-to-UART bridges. The internal 1.5 kohm pull-up eliminates the external resistor, while deep-software-standby current measured in microamps in the RX111 Group datasheet enables coin-cell powered input devices that still function for years. The 128 KB Flash provides ample room for composite HID + CDC device descriptors and command interpreters.
Recommandé
Low-Power IoT Sensor Nodes
With sub-microamp software-standby current and a 12-bit ADC offering up to 14 channels, the R5F51115ADLF#UA fits wireless and wired IoT sensor nodes including temperature, humidity, motion, and environmental monitoring nodes. Engineers can wake on RTC interrupt or external IRQ, take ADC readings, transmit briefly, and return to deep-software-standby while the USB 2.0 FS interface remains available for wired configuration. The 16 KB SRAM is sufficient to buffer ADC sweeps without DMA interrupts during burst sampling.
Recommandé
Industrial Barcode Scanners
Industrial barcode and 2D-imaging scanners benefit from the R5F51115ADLF#UA's 128 KB Flash and 32 MHz RXv1 core, decoding linear/2D symbologies directly while presenting as a USB HID keyboard or CDC virtual COM port to the host. The DMA controller (DTC + DMAC) offloads image-row transfers to RAM without CPU overhead. Per the RX111 Group datasheet, the 12-bit ADC and reference stability from the Renesas internal bandgap enable calibrated battery-state reporting over USB, critical in cordless warehouse scanner applications.
Recommandé
Battery-Powered Measurement Instruments
Portable USB measurement instruments use the R5F51115ADLF#UA to digitize signals through its 14-channel 12-bit ADC and stream samples to a host over USB at sustained rates. Microamp software-standby allows months of standby in field instruments; the integrated USB 2.0 FS eliminates a dedicated MCU for the comms interface. According to the RX111 Group datasheet, internal voltage reference accuracy is sufficient for many transducer applications, and 128 KB Flash supports calibration tables and linearization coefficients.
Recommandé
Smart Home Hubs with USB Debug
Smart home gateways and hubs exploit the R5F51115ADLF#UA's USB 2.0 FS host capability for firmware-updatable device clusters and debug-log ports. Its RXv1 deterministic interrupt response benefits real-time protocols such as Zigbee coordinator overhead or BLE HCI bridging. The 64-FLGA 5x5 mm small footprint keeps BOM area minimal while the 128 KB Flash holds a Zigbee/BLE stack plus manufacturer custom application code. USB OnTheGo enables direct field-connection to smartphones for commissioning.
Recommandé
Automotive Diagnostic Adapters
R5F51115ADLF#UA serves USB-to-CAN or USB-OBDII diagnostic adapters where its USB 2.0 FS Device + host-mode capability combined with SCI/RSPI peripherals drive external CAN transceivers. While the G-grade variant is appropriate for higher-temperature automotive environments, the standard R5F51115ADLF#UA suits cabin-mounted telematics debug tools. The 12-bit ADC can monitor battery voltage for under-voltage diagnostics. Per the RX111 Group datasheet, the 128 KB Flash supports SAE J2534 command interpreters plus OEM proprietary protocols.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour R5F51115ADLF#UA — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | R5F51115ADLF#GA | R5F51114ADLF#UA | R5F51116ADLF#UA | R5F51113ADLF#UA |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 64-FLGA (5x5 mm) | 64-FLGA (5x5 mm) - same | 64-FLGA (5x5 mm) - same | 64-FLGA (5x5 mm) - same | 64-FLGA (5x5 mm) - same |
| Program Flash | 128 KB | 128 KB | 96 KB | 256 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| USB 2.0 FS Interface | Yes (Device/Host/OTG) | Yes | Yes | Yes | Yes |
| A/D Converter Channels | 12-bit, up to 14 ch | 12-bit, up to 14 ch | 12-bit, up to 14 ch | 12-bit, up to 14 ch | 12-bit, up to 14 ch |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (consumer) | -40 C to +105 C (industrial G-grade) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- Lowest software-standby power in 64-FLGA USB class (vs R5F51114ADLF#UA)
- Higher operating temperature range on G-grade (vs R5F51115ADLF#GA)
- Flash density upgrade path within the same footprint (vs R5F51116ADLF#UA)
Notes de conception
The 64-FLGA 5x5 mm package uses 0.5 mm pitch and an exposed central thermal pad that must be soldered for mechanical reliability. Per the Renesas RX111 Group datasheet section 'Package', reflow-only assembly is mandatory - this package cannot be hand-soldered. Use NSMD pads with a microvia-in-pad or thermal-via array under the e-pad, connected to a ground/power plane. Stencil aperture reductions (typically 60-80% area) on the e-pad mitigate solder-bump voids to under 25% area per IPC-7093.
VCC range is 1.8 V to 3.6 V single rail; bypass the VCC pins with at least one 10 uF X7R bulk + one 0.1 uF X7R per VCC ball, placed as close as possible to the IC. The RX111 internal 1.2 V core regulator decouples its output to VCL with a 1 uF X7R near VCL. Per the RX111 Group datasheet electrical characteristics, decoupling the USB regulator pins (VCC_USB and VSS_USB) with 4.7 uF + 0.1 uF is required to meet USB 2.0 FS transmit eye compliance.
Do not confuse R5F51115ADLF#UA with R5F51115ADFL#3A (LQFP-48) - the latter is NOT a drop-in alternative because pin counts differ (48 vs 64). When migrating firmware between RX111 memory variants (R5F51113/4/5/6), update the linker script's ROM region size or flash mapping - the boot ROM and peripheral addresses remain identical, so application code recompiles without modification. Finally, USB DM/DP trace routing must keep impedance at 90 ohm +/-10% differential with no splits over power-plane gaps, per USB 2.0 specification section 6.
USB 2.0 FS differential pair (D+/D-) requires 90 ohm differential impedance and matched length tolerance below 150 mil. Per the Renesas RX111 hardware design note 'HDPER0001', keep D+/D traces short (< 30 mm), do not cross over a power-plane gap, and place an ESD protection array (TVS diode array with <1 pF capacitance) close to the USB receptacle. Isolate the VBUS sense input from VCC_USB with a 10 kohm resistor if line-voltage transients are possible.
Informations de conformité
RoHS and REACH compliance confirmed in the Renesas RX111 Group datasheet section on Package and Ordering Information. AEC-Q100 not applicable for the consumer/industrial temperature grade; for automotive, select an H/S-grade variant. Halogen-free status requires part-specific manufacturer letter.
