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Renesas R5F51303ADNE#20
- Part No.:
- R5F51303ADNE#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
R5F51303ADNE#20.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:822
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Product details
Overview
R5F51303ADNE#20 from Renesas is a 32-bit RX CPU-based microcontroller in the RX130 Group, operating at up to 32 MHz (50 DMIPS), featuring 64 KB on-chip flash, 10 KB SRAM, and 8 KB data flash. It integrates a 12-bit A/D converter (10 channels), two 8-bit D/A channels, capacitive touch sensing (24 keys), RTC, low-power timer, and multiple communication interfaces including SCI, I²C, and RSPI - deployed in battery-powered consumer appliances and industrial control panels.
For engineers reviewing the R5F51303ADNE#20 datasheet, R5F51303ADNE#20 pinout, R5F51303ADNE#20 application, or R5F51303ADNE#20 equivalent, key selection criteria include its HWQFN-48 package (7 × 7 mm, 0.5 mm pitch), –40°C to +85°C temperature grade, 1.8–5.5 V single-supply operation, and IEC60730-compliant self-test features for functional safety-critical firmware.
Technical Context
The R5F51303ADNE#20 implements the 32-bit RX CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions - enabling 1-cycle instruction execution and 64-bit accumulator support for 32×32 multiply operations. Its clock system includes high-speed on-chip oscillator (32 MHz ±1%), sub-clock (32.768 kHz), PLL, and CAC for frequency accuracy monitoring.
Peripheral integration centers on event-driven operation: ELC enables inter-module triggering without CPU intervention; DTC supports four transfer modes with interrupt-source linkage; and MPC allows flexible pin function assignment across 38 GPIOs. The device omits REMC and full-capacity CTSU (limited to 24 touch channels) versus larger-package RX130 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC with 5-stage pipeline, 32 MHz max, 50 DMIPS - delivers deterministic real-time control with ultra-compact code density. |
| Memory | 64 KB flash (no wait states at 32 MHz), 10 KB SRAM, 8 KB data flash (1M erase/write cycles) - supports field firmware updates and parameter storage. |
| Analog Peripherals | 12-bit A/D converter (10 channels, 1.4 µs conversion), two 8-bit D/A outputs (0–AVCC0), temperature sensor - enables closed-loop analog signal conditioning. |
| Timers | MTU2 (6-channel 16-bit), TMR (4-channel 8-bit), CMT (2-channel 16-bit), LPT (16-bit, sub-clock driven) - provides PWM generation, input capture, and low-power wake-up timing. |
| Communication | SCI (3 channels), I²C (1 channel, 400 kbps), RSPI (1 channel, 16 Mbps), FINE debug interface - supports mixed-protocol sensor networks and host MCU interfacing. |
| Package & Power | HWQFN-48 (7 × 7 mm, 0.5 mm pitch), 1.8–5.5 V supply, 96 µA/MHz active current, 0.37 µA software standby - optimized for space-constrained, battery-operated designs. |
| Safety & Compliance | IEC60730 Class B support via A/D self-diagnostic, RAM test assistance, IWDT, and clock accuracy measurement - reduces certification effort for household appliances. |
Pinout & Package
Packaged in a 48-pin HWQFN (PWQN0048KB-A) with 7 × 7 mm footprint and 0.5 mm pitch, the R5F51303ADNE#20 exposes 38 general-purpose I/O pins (5-V tolerant, open-drain capable), dedicated analog inputs (AN000–AN007, AN016–AN031), and peripheral-specific signals including SCI, I²C, RSPI, MTU, and CTSU touch pins (TS0–TS23).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Single 1.8–5.5 V rail; VSS reference for all digital/analog domains and decoupling (VCL capacitor required). |
| XTAL / EXTAL | Main clock oscillator interface | Supports external crystal (1–20 MHz) or clock source; essential for precise timing and USB-free synchronous comms. |
| XCIN / XCOUT | Sub-clock oscillator interface | Connects 32.768 kHz crystal for RTC calendar mode and LPT wake-up - critical for timekeeping during software standby. |
| AN000–AN007, AN016–AN031 | Analog input channels | 10-channel 12-bit A/D input set; sampling time configurable per channel - enables multi-sensor acquisition with variable settling requirements. |
| DA0 / DA1 | Digital-to-analog outputs | Two independent 8-bit voltage outputs (0–AVCC0); used for biasing, calibration references, or analog actuator control. |
| TS0–TS23 | Capacitive touch sensing inputs | 24-pin CTSU matrix support (mutual capacitance) - enables slider, wheel, or button arrays in compact HMI designs. |
| SCI0/SCI1/SCI5 TXD/RXD | Asynchronous serial interface | Three full-duplex UART channels with programmable baud rate (0–255/255 fine adjustment) - ideal for debug, sensor telemetry, and host MCU bridging. |
| SCL0 / SDA0 | I²C bus interface | Open-drain, SMBus-compatible master/slave port - connects to EEPROMs, sensors, and power management ICs with minimal pin count. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | 0.37 µA software standby current with LPT running; 4.8 µs wake-up time - extends battery life in always-on sensing nodes. |
| Event Link Controller (ELC) | Direct hardware triggering between 47 event sources (e.g., timer overflow → A/D start) - eliminates CPU polling and ISR latency. |
| Data Transfer Controller (DTC) | Four transfer modes (normal, repeat, block, chain) activated by interrupts - offloads memory-mapped peripheral data movement from CPU. |
| IEC60730 compliance aids | Integrated A/D disconnection detection, RAM test assistance via DOC, IWDT with dedicated 15 kHz oscillator - accelerates Class B certification. |
| Flexible clock configuration | Independent ICLK/PCLKB/FCLK domains; CAC measures oscillator drift against external reference - ensures timing integrity across voltage/temperature. |
| Multi-function pin controller (MPC) | Runtime-selectable peripheral assignment per pin (e.g., P03 = SCI0_TXD or MTIOC0A) - simplifies PCB layout reuse across firmware variants. |
Applications
| Smart Home Thermostat | Industrial Panel Meter |
|---|---|
|
Use Scenario: Compact wall-mounted HVAC controller with ambient temperature/humidity sensing, LCD display, and Wi-Fi module interface. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition (A/D), user interface (CTSU), display timing (MTU PWM), and serial communication (SCI to Wi-Fi SoC). Use Value: Integrated 12-bit A/D (10 ch), 24-key CTSU, and 32 MHz CPU enable responsive UI and precise thermal regulation without external signal conditioners. |
Use Scenario: DIN-rail mounted meter reading analog process signals (4–20 mA, 0–10 V) and driving 4-digit LED display with isolated RS-485 backhaul. IC Role / Device Role / Timing Role: Signal acquisition and protocol gateway - digitizing analog inputs, performing linearization, and formatting Modbus RTU frames over SCI. Use Value: 1.4 µs A/D conversion, programmable sampling time per channel, and SCI with hardware flow control ensure accurate, jitter-free data logging at 100 Hz update rates. |
| White Goods Control Board | Medical Patient Monitor Front-End |
|
Use Scenario: Washing machine main board controlling motor drive (via PWM), water level (pressure sensor), door lock, and detergent dispensing. IC Role / Device Role / Timing Role: Safety-critical subsystem controller executing IEC60730 diagnostics, generating complementary PWM (MTU), and monitoring analog thresholds (Comparator B). Use Value: Built-in A/D self-test, RAM test assistance, and dual independent watchdog timers reduce external safety components and simplify functional safety validation. |
Use Scenario: Portable vital signs monitor acquiring ECG, SpO₂, and temperature, with OLED display and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Analog front-end processor - digitizing conditioned biosignals, performing baseline correction (D/A offset), and managing low-power sleep/wake cycles (LPT + RTC). Use Value: 10-channel A/D with per-channel sampling control, on-chip temperature sensor, and 0.37 µA standby current extend runtime on coin-cell batteries beyond 72 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F51303ADFL#30 | LFQFP-48 package (7 × 7 mm, 0.5 mm pitch) vs. HWQFN; identical memory, peripherals, and electrical specs. | Requires different PCB land pattern and reflow profile; better suited for manual assembly or prototyping due to gull-wing leads. | Select when board assembly uses standard QFP handling or requires easier visual inspection of solder joints. |
| R5F51305ADNE#U0 | 128 KB flash / 16 KB SRAM vs. 64 KB / 10 KB; same package, peripherals, and clock system. | Supports larger firmware images (e.g., BLE stack + application), but increases cost and power in memory-light designs. | Choose when future firmware expansion or OTA update capability demands headroom beyond 64 KB code space. |
Compared with R5F51303ADNE#20, R5F51303ADFL#30 offers identical functionality in a through-hole-friendly LFQFP package, while R5F51305ADNE#U0 provides double the flash and RAM for complex protocol stacks - both require no firmware changes but differ in layout, cost, and scalability trade-offs.
Availability
R5F51303ADNE#20 is available at Aetrix Electronics and suitable for smart home thermostats, industrial panel meters, and white goods control boards requiring stable component supply, long-term lifecycle support, and IEC60730-compliant firmware development.
Supply support for R5F51303ADNE#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, and power solutions for automotive, industrial, and IoT markets.
The RX130 Group targets cost-sensitive, low-power embedded applications demanding rich analog integration, functional safety support, and capacitive touch - designed for appliance control, sensor hubs, and portable medical devices.
FAQ
What is the maximum operating frequency and CPU performance of the R5F51303ADNE#20?
The R5F51303ADNE#20 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance using the 32-bit RX CPU core. Its 5-stage pipeline, variable-length instruction set, and single-cycle execution for most instructions enable deterministic real-time response - confirmed in Renesas document R01DS0273EJ0300, Section 1.1.
Does the R5F51303ADNE#20 support IEC60730 Class B compliance for household appliances?
Yes, the R5F51303ADNE#20 includes dedicated hardware features for IEC60730 Class B: A/D converter self-diagnostic and analog input disconnection detection, RAM test assistance via the Data Operation Circuit (DOC), independent watchdog timer with dedicated 15 kHz oscillator, and clock frequency accuracy measurement circuit (CAC). These are documented in Section 1.1 and Section 24 of R01DS0273EJ0300.
How many analog input channels and what resolution does the A/D converter on the R5F51303ADNE#20 provide?
The R5F51303ADNE#20 integrates a 12-bit successive-approximation A/D converter with 10 input channels (AN000–AN007, AN016–AN031), achieving a minimum conversion time of 1.4 µs at 32 MHz ADCLK. Sampling time is configurable per channel, and it supports scan modes, group priority, and conversion result comparison - detailed in Section 1.1 and Section 22 of R01DS0273EJ0300.
What package type and pin count does the R5F51303ADNE#20 use?
The R5F51303ADNE#20 uses a 48-pin HWQFN package (PWQN0048KB-A) measuring 7 × 7 mm with 0.5 mm pitch. This leadless, thermally enhanced package supports 38 general-purpose I/O pins and exposes all core peripherals including SCI, I²C, RSPI, MTU, and CTSU - specified in Table 1.3 and Figure 1.7 of R01DS0273EJ0300.
Can the R5F51303ADNE#20 operate from a single low-voltage supply, and what is its current consumption in low-power modes?
Yes, the R5F51303ADNE#20 operates from a single 1.8 V to 5.5 V supply. In high-speed operating mode, it draws 96 µA per MHz; in software standby mode, supply current drops to 0.37 µA while the low-power timer remains active - enabling ultra-low-power wake-up intervals. These values are measured per Section 1.1 and Section 7 of R01DS0273EJ0300.
R5F51303ADNE#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-WFQFN Exposed Pad
- Series:
- RX130
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RX
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, LINbus, SCI, SPI
- Peripherals:
- Capacitive Touch, DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F51303ADNE#20 FAQ
1.How can I place an order for R5F51303ADNE#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F51303ADNE#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 R5F51303ADNE#20 reliable?
The price and inventory of R5F51303ADNE#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F51303ADNE#20 is usually 5 days.
3.What payment methods are accepted for R5F51303ADNE#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F51303ADNE#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F51303ADNE#20?
R5F51303ADNE#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F51303ADNE#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 R5F51303ADNE#20?
For technical support, including R5F51303ADNE#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F51303ADNE#20 requirements.
6.How does Aetrix verify that R5F51303ADNE#20 is sourced from the original manufacturer or authorized distributors?
All R5F51303ADNE#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 R5F51303ADNE#20 meets industry standards.
7.What is the process for return or replacement of R5F51303ADNE#20?
All R5F51303ADNE#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F51303ADNE#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 R5F51303ADNE#20 part is unused and in its original packaging.
Return procedure for R5F51303ADNE#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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