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Renesas R5F51306BDNE#20
- Part No.:
- R5F51306BDNE#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
R5F51306BDNE#20.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48WFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:542
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Product details
Overview
R5F51306BDNE#20 from Renesas Electronics is a 32-bit RX130 Group microcontroller with 256 KB flash, 32 KB SRAM, and 8 KB data flash, operating at up to 32 MHz (50 DMIPS), featuring integrated 12-bit A/D converter (10 channels), dual 8-bit D/A outputs, capacitive touch sensing (24 keys), RTC, low-power timer, and IEC60730-compliant safety functions for industrial control panels.
For engineers reviewing the R5F51306BDNE#20 datasheet, R5F51306BDNE#20 pinout, R5F51306BDNE#20 application, or R5F51306BDNE#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 support for ELC-triggered peripheral coordination without CPU wake-up.
Technical Context
The R5F51306BDNE#20 implements a CISC Harvard-architecture RX CPU core with 5-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiply operations. It integrates an Event Link Controller (ELC) enabling direct hardware-to-hardware triggering between 47 event sources - including MTU2 timers, A/D conversion starts, and SCI transmission completes - while the CPU remains in deep sleep mode.
Its clock system includes high-speed on-chip oscillator (32 MHz ±1%), sub-clock (32.768 kHz), PLL (4–8 MHz input), and IWDT-dedicated 15 kHz oscillator. Power management supports three low-power modes, with software standby consuming just 0.37 µA and 4.8 µs wake-up time - critical for battery-powered remote sensors and touch-enabled HMI devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard, 32 MHz max, 50 DMIPS performance |
| Memory | 256 KB flash (no wait states), 32 KB SRAM, 8 KB data flash (1M erase cycles) |
| A/D Converter | 12-bit resolution, 10-channel input, 1.4 µs conversion time at 32 MHz ADCLK |
| D/A Converter | 2 × 8-bit outputs, 0 V to AVCC0 range, independent voltage reference support |
| Capacitive Touch | 24-key support via CTSU unit, self-capacitance method, 5-V tolerant I/O |
| Power Supply | Single 1.8–5.5 V supply; 96 µA/MHz active current; 0.37 µA software standby |
| Package & Temp | PWQN0048KB-A (HWQFN-48, 7×7 mm, 0.5 mm pitch); –40°C to +85°C |
Pinout & Package
PWQN0048KB-A is a 48-pin wettable flank QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad, optimized for automated optical inspection (AOI) and thermal dissipation in space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCC0/AVSS0) with separate decoupling requirements |
| XTAL / EXTAL | Main clock oscillator interface | Supports external crystal (1–20 MHz) or clock input; enables precise timing for RTC and communication baud rates |
| AN000–AN007, AN016–AN031 | Analog input channels | 10 dedicated A/D inputs among 24 possible pins; sampling time programmable per channel for sensor signal conditioning |
| DA0 / DA1 | Analog output terminals | Independent 8-bit DAC outputs usable for biasing, calibration signals, or analog feedback loops |
| TS0–TS23 | Capacitive touch sense pins | 24 of 36 CTSU channels assigned; supports mutual/self-capacitance configurations for robust button/slider detection |
| MTIOC0A–MTIOC4D | PWM/complementary output pins | Up to 20 PWM-capable pins across MTU2 channels; supports phase-counting and reset-synchronous PWM for motor control |
| SCI0–SCI9, SCI12 | Serial interface I/O | 6 SCIg + 1 SCIh channels; asynchronous, clock-sync, smart card, and LIN protocol support with ELC-triggered transfers |
| RES# | Active-low reset input | Asynchronous reset pin with internal pull-up; initiates full system reset including memory and peripheral state restoration |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables 47 hardware event sources to trigger peripheral actions (e.g., A/D start, timer reload) without CPU intervention or interrupt latency |
| IEC60730 Safety Support | Integrated RAM test assistance, clock accuracy measurement (CAC), A/D self-diagnostic, and analog input disconnection detection for Class B compliance |
| Low-Power Timer (LPT) | 16-bit counter running on sub-clock or IWDT oscillator during software standby mode, enabling periodic wake-up at µA-level power |
| Background Operation (BGO) | Data flash programming/erasing proceeds concurrently with code execution, eliminating CPU stalls during firmware updates |
| Capacitive Touch Sensing Unit (CTSU) | Hardware-accelerated touch detection supporting 24 keys in self-capacitance mode with noise immunity and automatic drift compensation |
Applications
| Industrial Control Panel | Smart Appliance HMI |
|---|---|
Use Scenario: Touch-enabled operator interface for PLC-based machinery with real-time status display and parameter adjustment. IC Role / Device Role / Timing Role: Main controller executing UI logic, managing capacitive buttons, driving DAC-based analog outputs for actuator biasing, and logging events to data flash. Use Value: Integrated CTSU eliminates external touch controller IC; 256 KB flash accommodates multi-language GUI assets; ELC reduces CPU load by 35% during concurrent sensor polling and display refresh. | Use Scenario: User interface subsystem in washing machine or HVAC unit, detecting button presses and adjusting motor speed via PWM. IC Role / Device Role / Timing Role: Dedicated HMI MCU handling touch input, driving LED indicators, generating audio tones via DAC, and communicating with main controller via SCI. Use Value: HWQFN-48 package fits compact front-panel PCB; 0.37 µA standby current extends battery life in cordless remotes; built-in RTC enables scheduled wash cycles. |
| Wireless Sensor Node | Medical Diagnostic Device |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality, transmitting data via RSPI-connected LoRa module. IC Role / Device Role / Timing Role: Sensor fusion hub acquiring analog sensor data via A/D, performing basic calibration using DAC references, and managing low-power wireless transmission scheduling. Use Value: 4.8 µs wake-up time minimizes active duration; 1.4 µs A/D conversion enables rapid multi-channel sampling; data flash stores calibration coefficients across power cycles. | Use Scenario: Portable blood glucose meter requiring precise analog front-end, touch-responsive UI, and regulatory-compliant diagnostics. IC Role / Device Role / Timing Role: Safety-critical controller executing IEC60730 self-tests, validating A/D accuracy before each measurement, and logging fault events to data flash. Use Value: On-chip CAC verifies clock stability; A/D disconnection detection prevents false readings; 32-byte unique ID enables device traceability per FDA UDI requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F51306ADNE#U0 | Same package and pinout; chip version A (discontinued), identical electrical specs but no new orders accepted | No functional difference; not recommended for new designs due to obsolescence status | Select R5F51306BDNE#20 for long-term supply assurance and full Renesas support |
| R5F51305BDNE#U0 | Lower memory: 128 KB flash / 16 KB SRAM; otherwise identical peripheral set and package | Suitable for cost-sensitive applications with smaller firmware footprint and fewer data logging requirements | Choose when application code size stays under 110 KB and RAM usage remains below 14 KB |
Compared with R5F51306ADNE#U0 (obsolete) and R5F51305BDNE#U0 (reduced memory), the R5F51306BDNE#20 delivers optimal balance of code storage, runtime memory, and peripheral richness for mid-tier industrial HMI and sensor edge nodes - especially where future firmware expansion or data logging is anticipated.
Availability
R5F51306BDNE#20 is available at Aetrix Electronics and suitable for industrial control panels, smart appliance HMIs, wireless sensor nodes, and medical diagnostic devices requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for R5F51306BDNE#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for automotive, industrial, and IoT markets.
The RX130 Group - including the R5F51306BDNE#20 - was designed for cost-sensitive, low-power human-machine interface and sensor-edge applications requiring integrated touch, analog, and safety features without external support components.
FAQ
What is the maximum operating frequency and core architecture of the R5F51306BDNE#20?
The R5F51306BDNE#20 operates at a maximum frequency of 32 MHz using the 32-bit RX CPU core with CISC Harvard architecture and 5-stage pipeline. It delivers 50 DMIPS performance and supports single-cycle 32×32-bit multiplication with a 64-bit accumulator. This architecture enables deterministic real-time response for industrial control tasks while maintaining ultra-compact code density.
Does the R5F51306BDNE#20 support IEC60730 Class B compliance out of the box?
Yes, the R5F51306BDNE#20 includes hardware-assisted IEC60730 Class B compliance features: clock frequency accuracy measurement (CAC), A/D converter self-diagnostic and analog input disconnection detection, RAM test assistance via DOC, and independent watchdog timer with dedicated 15 kHz oscillator. These features reduce software certification effort and enable safe operation in household and industrial appliances.
How many capacitive touch channels does the R5F51306BDNE#20 support, and what package constraints apply?
The R5F51306BDNE#20 supports up to 24 capacitive touch sensing channels using its integrated CTSU unit. This is determined by its PWQN0048KB-A (HWQFN-48) package - the smallest in the RX130 family - which allocates 24 of the 36 total CTSU pins. Larger packages (e.g., 64-pin LFQFP) support up to 32 channels, but the R5F51306BDNE#20's 24-channel capability is sufficient for most compact HMI designs.
What are the power consumption characteristics of the R5F51306BDNE#20 in low-power modes?
The R5F51306BDNE#20 achieves 0.37 µA supply current in software standby mode with the low-power timer (LPT) active, and recovers in just 4.8 µs. In active mode, it consumes 96 µA per MHz at 32 MHz. These values are measured at 1.8–5.5 V supply and –40°C to +85°C ambient, making the R5F51306BDNE#20 suitable for battery-powered edge nodes with multi-year operational life.
Can the R5F51306BDNE#20 perform background programming of its data flash memory?
Yes, the R5F51306BDNE#20 supports Background Operation (BGO) for its 8 KB data flash memory, allowing program/erase cycles to execute concurrently with application code execution. This feature prevents CPU stalls during firmware updates or parameter storage, ensuring uninterrupted real-time operation - a critical requirement for industrial controllers and medical devices using the R5F51306BDNE#20.
R5F51306BDNE#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-WFQFN Exposed Pad
- Series:
- RX130
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K 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:
R5F51306BDNE#20 FAQ
1.How can I place an order for R5F51306BDNE#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F51306BDNE#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 R5F51306BDNE#20 reliable?
The price and inventory of R5F51306BDNE#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F51306BDNE#20 is usually 5 days.
3.What payment methods are accepted for R5F51306BDNE#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F51306BDNE#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F51306BDNE#20?
R5F51306BDNE#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F51306BDNE#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 R5F51306BDNE#20?
For technical support, including R5F51306BDNE#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F51306BDNE#20 requirements.
6.How does Aetrix verify that R5F51306BDNE#20 is sourced from the original manufacturer or authorized distributors?
All R5F51306BDNE#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 R5F51306BDNE#20 meets industry standards.
7.What is the process for return or replacement of R5F51306BDNE#20?
All R5F51306BDNE#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F51306BDNE#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 R5F51306BDNE#20 part is unused and in its original packaging.
Return procedure for R5F51306BDNE#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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