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Renesas R5F51115ADFL#3A
- Part No.:
- R5F51115ADFL#3A
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F51115ADFL#3A.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,589
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Product details
Overview
R5F51115ADFL#3A from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 128 KB on-chip flash, 16 KB SRAM, and 8 KB data flash. It integrates a 12-bit A/D converter (14 channels, 1.0 µs conversion), USB 2.0 full-speed host/function/OTG, RTC with calendar mode, and operates from 1.8–3.6 V across −40 to +85°C - deployed in industrial HMI and sensor gateway edge nodes.
For engineers reviewing the R5F51115ADFL#3A datasheet, R5F51115ADFL#3A pinout, R5F51115ADFL#3A application, or R5F51115ADFL#3A equivalent, key selection criteria include its 48-pin LFQFP (PLQP0048KB-A) package, USB OTG support with BC charging, dual 8-bit D/A outputs, ELC-triggered peripheral coordination, and IEC 60730-compliant safety features for certified embedded control.
Technical Context
The R5F51115ADFL#3A implements a CISC Harvard-architecture RX core with five-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations. Its clock system includes independent PLL, high-speed on-chip oscillator (32 MHz ±1%), sub-clock (32.768 kHz), and CAC for real-time frequency accuracy monitoring.
Peripheral integration centers on event-driven operation: the Event Link Controller (ELC) enables direct module-to-module triggering without CPU intervention, while the Data Transfer Controller (DTC) supports chain transfers across four modes using interrupt sources - both critical for deterministic low-latency sensor-to-USB data pipelines in battery-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard, 32 MHz max, 50 DMIPS - enables real-time control with compact code footprint and deterministic interrupt latency. |
| Memory | 128 KB flash (no wait states @32 MHz), 16 KB SRAM, 8 KB data flash (1M erase/write cycles) - supports field firmware updates and parameter storage without external EEPROM. |
| A/D Converter | 12-bit S12AD, 14 channels, 1.0 µs min conversion time - delivers high-resolution analog sensing for motor current or environmental monitoring. |
| USB Interface | USB 2.0 full-speed (12 Mbps) host/function/OTG with BC charger detection - enables direct connection to PC hosts, peripherals, and smart battery chargers. |
| Timers & PWM | MTU2 (6-channel 16-bit), CMT (2-channel 16-bit), complementary PWM, phase counting - supports precise motor control and encoder interfacing. |
| Low-Power Modes | Software standby (0.44 µA), deep sleep, and recovery in 4.8 µs - extends battery life in always-on sensor nodes with rapid wake-on-event capability. |
| Safety Features | IEC 60730-compliant IWDT (15 kHz dedicated oscillator), LVD with 14 voltage thresholds, CAC, RAM test assist - meets Class B functional safety requirements. |
Pinout & Package
Package: 48-pin LFQFP (PLQP0048KB-A), 7 × 7 mm, 0.5 mm pitch, lead-free (Sn only), RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: VCC (1.8–3.6 V core/analog), VSS reference - requires local decoupling per layout guidelines. |
| USB0_DP / USB0_DM | USB differential data pair | On-chip transceiver with full-speed compliance; requires 27 Ω series resistors and controlled 90 Ω differential impedance routing. |
| AN000–AN015 | Analog input channels | 14 dedicated A/D inputs (including VREFH0/VREFL0); AVCC0/AVSS0 must be separately filtered for noise-sensitive measurements. |
| DA0 / DA1 | 8-bit D/A outputs | Two buffered analog outputs (0–VCC range); usable for calibration references or analog actuator control in 48-pin variants. |
| MTIOC0A–MTIOC5W | MTU2 waveform I/O | 16-pin timer I/O set supporting complementary PWM, input capture, and encoder quadrature decoding - mapped to P0/P1/P2/P3/P4 ports. |
| SCI1/SCI5/SCI12 | Serial communication interfaces | Three SCI modules: two SCIe (asynchronous/clock sync/I²C/SPI), one SCIf (extended serial) - enable multi-protocol device bridging. |
| RIIC / RSPI | I²C & SPI master/slave | RIIC (400 kbps SMBus-compatible), RSPI (16 Mbps, 32-bit frames, double-buffered) - supports sensor fusion and display interface. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Direct hardware linking of 35 event sources (e.g., timer overflow → ADC trigger → DTC transfer) eliminates CPU polling and reduces ISR overhead by >70% in sensor logging. |
| Background Operation (BGO) | Data flash erase/write executes concurrently with program execution - enables seamless over-the-air firmware updates without application interruption. |
| USB Battery Charging (BC) | Detects D+/D− line states to identify wall adapters, PCs, or charging ports - allows embedded devices to draw up to 1.5 A safely per BC 1.2 spec. |
| Realtime Clock (RTC) | Hardware calendar engine with leap-year correction, alarm/periodic interrupts, and software-standby wake capability - maintains accurate timekeeping during ultra-low-power operation. |
| Multi-function Pin Controller (MPC) | Runtime reassignment of peripheral functions (e.g., UART ↔ I²C ↔ SPI) on shared pins - simplifies PCB design and enables feature differentiation via firmware. |
Applications
| Industrial HMI Panel | Smart Sensor Gateway |
|---|---|
|
Use Scenario: Compact touch-enabled display unit collecting temperature, humidity, and vibration data from Modbus RTU sensors via RS485. IC Role / Device Role / Timing Role: Central controller executing GUI rendering, protocol translation (Modbus ↔ USB CDC), and RTC-synchronized data logging to internal flash. Use Value: Integrated USB OTG eliminates need for external USB-UART bridge IC; ELC synchronizes ADC sampling with RS485 receive timing to prevent buffer overrun. |
Use Scenario: Battery-powered LoRaWAN node aggregating analog sensor readings and forwarding via wireless link every 15 minutes. IC Role / Device Role / Timing Role: Low-power coordinator managing sensor wake-up, A/D conversion, CRC-protected packet assembly, and LoRa transceiver control. Use Value: Software standby mode (0.44 µA) + 4.8 µs wake time enables >5-year battery life; built-in CRC calculator offloads host MCU computation. |
| USB-C Enabled Test Fixture | IEC 60730-Certified Appliance Control |
|
Use Scenario: Production-line calibration tool connecting to PC via USB-C for firmware loading, sensor trim, and pass/fail reporting. IC Role / Device Role / Timing Role: USB device with custom CDC ACM class, on-board D/A outputs for analog stimulus generation, and temperature-compensated calibration routines. Use Value: Dual 8-bit D/A channels provide programmable reference voltages; BC detection ensures reliable enumeration across diverse host power supplies. |
Use Scenario: White-goods main control board requiring Class B functional safety for motor drive, door lock, and thermal cutoff monitoring. IC Role / Device Role / Timing Role: Safety monitor executing RAM tests, clock accuracy checks (CAC), and IWDT supervision alongside primary application logic. Use Value: On-chip IEC 60730 features reduce certification effort; independent IWDT clock prevents failure masking during voltage droop events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F51115ADFM#3A | 64-pin LFQFP (PLQP0064KB-A); adds 2 extra A/D channels, 2 more MTU2 pins, and full 48 GPIO vs. 30 on R5F51115ADFL#3A. | Required when full peripheral count (e.g., dual UART + I²C + SPI + USB) and maximum GPIO are needed in space-tolerant designs. | Select R5F51115ADFM#3A for prototyping or systems needing expansion headroom; R5F51115ADFL#3A optimizes cost and board area for production gateways. |
| R5F51113ADFL#3A | 64 KB flash, 10 KB RAM, same 48-pin package and peripheral set - reduced memory but identical pinout and clock/peripheral specs. | Suitable for simpler control tasks (e.g., basic thermostat) where 128 KB flash and 16 KB RAM are unnecessary. | Choose R5F51113ADFL#3A to lower BOM cost in memory-constrained applications; verify flash usage remains <60 KB to avoid runtime errors. |
Compared with R5F51115ADFL#3A, R5F51115ADFM#3A provides greater I/O and analog channel scalability at the expense of larger footprint, while R5F51113ADFL#3A trades memory capacity for cost reduction without altering peripheral functionality or layout compatibility.
Availability
R5F51115ADFL#3A is available at Aetrix Electronics and suitable for industrial HMI, smart sensor gateways, USB-C test fixtures, and IEC 60730-certified appliance controls requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for R5F51115ADFL#3A 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 RX111 Group targets cost-sensitive, low-power embedded applications demanding USB connectivity, rich analog integration, and functional safety - designed specifically for industrial automation, building controls, and portable medical devices.
FAQ
What is the maximum operating frequency and CPU performance of the R5F51115ADFL#3A?
The R5F51115ADFL#3A operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. This is achieved through its optimized 32-bit RX CPU core with five-stage pipeline, variable-length instruction set, and single-cycle 32×32 multiply-accumulate capability - enabling real-time control loops and protocol stack execution without external acceleration.
Does the R5F51115ADFL#3A support USB On-The-Go (OTG) and Battery Charging (BC) detection?
Yes, the R5F51115ADFL#3A integrates a full-featured USB 2.0 host/function/OTG module compliant with BC 1.2 specification. It supports full-speed (12 Mbps) and low-speed (1.5 Mbps) operation, isochronous transfers, and automatic detection of standard downstream ports, charging downstream ports, and dedicated chargers - all implemented in hardware without firmware overhead.
What low-power modes are available on the R5F51115ADFL#3A, and what is the lowest supply current?
The R5F51115ADFL#3A offers three low-power modes: sleep, deep sleep, and software standby. In software standby mode, it draws just 0.44 µA typical supply current while retaining SRAM content and enabling wake-up via RTC alarm, external interrupt, or USB resume - with a guaranteed recovery time of 4.8 µs to full 32 MHz operation.
How many analog-to-digital converter (A/D) channels does the R5F51115ADFL#3A include, and what is its conversion speed?
The R5F51115ADFL#3A includes a 12-bit A/D converter with up to 14 input channels (AN000–AN015). At maximum CPU clock (32 MHz), its minimum conversion time is 1.0 µs per channel - achieved using the dedicated ADCLK derived from the peripheral clock (PCLK). It also supports double-trigger mode for motor control current sampling synchronization.
Is the R5F51115ADFL#3A pin-compatible with other members of the RX111 Group, such as the R5F51115ADFM#3A?
No, the R5F51115ADFL#3A (48-pin LFQFP) is not pin-compatible with the R5F51115ADFM#3A (64-pin LFQFP). While both share identical peripheral functionality and register-level compatibility, their physical packages differ in pin count, pitch, and layout - requiring separate PCB designs. However, firmware developed for R5F51115ADFL#3A can be reused on R5F51115ADFM#3A with minor linker script and pin initialization adjustments.
R5F51115ADFL#3A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RX111
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RX
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, SCI, SPI, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F51115ADFL#3A FAQ
1.How can I place an order for R5F51115ADFL#3A through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F51115ADFL#3A 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 R5F51115ADFL#3A reliable?
The price and inventory of R5F51115ADFL#3A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F51115ADFL#3A is usually 5 days.
3.What payment methods are accepted for R5F51115ADFL#3A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F51115ADFL#3A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F51115ADFL#3A?
R5F51115ADFL#3A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F51115ADFL#3A 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 R5F51115ADFL#3A?
For technical support, including R5F51115ADFL#3A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F51115ADFL#3A requirements.
6.How does Aetrix verify that R5F51115ADFL#3A is sourced from the original manufacturer or authorized distributors?
All R5F51115ADFL#3A 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 R5F51115ADFL#3A meets industry standards.
7.What is the process for return or replacement of R5F51115ADFL#3A?
All R5F51115ADFL#3A units undergo pre-shipment inspection (PSI). If there is an issue with R5F51115ADFL#3A, 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 R5F51115ADFL#3A part is unused and in its original packaging.
Return procedure for R5F51115ADFL#3A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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