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Renesas R5F521A7BDFM#30
- Part No.:
- R5F521A7BDFM#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F521A7BDFM#30.pdf
- Description:
- IC MCU 32BIT 384KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,426
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Product details
Overview
R5F521A7BDFM#30 from Renesas Electronics is a 32-bit RX CPU-based microcontroller optimized for high-precision analog sensing and industrial control, operating at up to 50 MHz (78 DMIPS), featuring a 24-bit ∆Σ A/D converter (SNDR = 85 dB, 7 channels), 384-Kbyte on-chip flash, 64-Kbyte SRAM, and integrated AES encryption (128/192/256-bit key). It supports deep software standby with RTC retention and targets energy-conscious metering and motor control applications.
For engineers reviewing the R5F521A7BDFM#30 datasheet, R5F521A7BDFM#30 pinout, R5F521A7BDFM#30 application, or R5F521A7BDFM#30 equivalent, this MCU delivers deterministic real-time performance with hardware-accelerated cryptography, dual A/D subsystems (24-bit ∆Σ + 10-bit SAR), event-driven peripheral coordination via ELC, and IEC60730-compliant self-test functions for safety-critical embedded systems.
Technical Context
The R5F521A7BDFM#30 implements a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and memory protection unit (MPU) - enabling deterministic interrupt latency and secure code isolation. Its 24-bit ∆Σ A/D converter supports simultaneous 7-channel operation with programmable gain (×1–×64 differential, ×1–×4 single-ended) and built-in calibration registers for impedance and gain compensation.
Real-time coordination is achieved through the Event Link Controller (ELC), which routes 69 event signals directly between peripherals without CPU intervention, while the Data Transfer Controller (DTC) and DMA controller (4-channel DMAC) offload data movement during low-power modes. Clock management includes independent ICLK (50 MHz), PCLK (25 MHz), and FCLK (25 MHz) domains with CAC circuit for frequency accuracy verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RX 32-bit CPU, 50 MHz max, 78 DMIPS - enables real-time signal processing in motor control and metering without external DSP. |
| Flash / RAM | 384 Kbytes flash (no wait states @50 MHz), 64 Kbytes SRAM - sufficient for complex control algorithms and firmware updates in field-deployed devices. |
| ∆Σ A/D Converter | 24-bit resolution, SNDR = 85 dB, 7 channels (4 diff + 3 SE), PGA up to ×64 - meets Class 0.2 accuracy requirements for polyphase electricity meters. |
| 10-bit A/D & D/A | 10-bit SAR ADC (7 ch, 2.0 μs conversion), 2-channel 10-bit DAC (0 V to VREFH) - supports auxiliary sensing and analog feedback loop generation. |
| Cryptography | AES-128/192/256 in ECB/CBC mode via DEU - enables secure firmware authentication and encrypted communication in smart grid endpoints. |
| Low-Power Modes | Four modes including deep software standby with RTC active - extends battery life in portable or energy-harvesting sensor nodes. |
| Operating Range | −40°C to +85°C, 1.8–3.6 V supply - certified for industrial environments with wide voltage tolerance and thermal stability. |
Pinout & Package
Package: PLQP0064KB-A - 64-pin LQFP, 10 × 10 mm, 0.5-mm pitch, RoHS-compliant surface-mount package suitable for compact industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCCA/AVSSA, VREFH/VREFL) - enable noise-isolated mixed-signal operation. |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ A/D differential inputs | Four dedicated differential input pairs support current-sensing shunt measurements with common-mode rejection >80 dB. |
| ANDS4–ANDS6 | ∆Σ A/D single-ended inputs | Three high-impedance voltage inputs for auxiliary sensors (e.g., temperature, pressure) with internal PGA scaling. |
| AN0–AN6 | 10-bit A/D inputs | Seven general-purpose analog inputs compatible with on-chip self-diagnostic and disconnection detection. |
| DA0 / DA1 | D/A converter outputs | Two buffered 10-bit analog outputs usable for calibration references or closed-loop actuator biasing. |
| MTIOC0A–MTIOC5D | MTU2 timer I/O | Six 16-bit timer channels with complementary PWM, phase counting, and input capture - drive 3-phase inverters or encoder interfaces. |
| SCI5 (TXD5/RXD5/IRTXD5/IRRXD5) | IrDA-capable serial interface | Full IrDA 1.0 encoding/decoding integrated with SCI5 - enables optical HMI or maintenance port without external transceiver. |
| RIIC0 / RIIC1 | I²C bus interfaces | Two SMBus-compatible masters/slaves (up to 400 kbps) - connect EEPROMs, temperature sensors, or PMICs with hardware arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Support | Hardware-assisted self-tests for A/D converters, clock accuracy (CAC), IWDT, RAM, and analog input disconnection - reduces certification effort for Class B safety applications. |
| Event Link Controller (ELC) | 69 configurable event sources trigger peripheral actions (e.g., A/D start on timer match) without CPU wake-up - cuts active power by >40% in duty-cycled sensing. |
| Multi-function Pin Controller (MPC) | Per-pin function remapping across 64 I/Os - simplifies PCB layout reuse across RX21A variants and accommodates routing constraints in dense designs. |
| Temperature Sensor | On-die calibrated sensor with three PGA gain settings - provides system-level thermal monitoring for derating or fan control without external components. |
| Real-Time Clock (RTC) | Sub-clock (32.768 kHz) driven, leap-year and 30-second adjustment, time-capture on external event - enables precise timestamping of fault events or data logging. |
Applications
| Smart Electricity Metering | Industrial Motor Control |
|---|---|
|
Use Scenario: Polyphase energy meter with Class 0.2 accuracy, tamper detection, and DLMS/COSEM communication. IC Role / Device Role / Timing Role: Primary metrology MCU performing simultaneous 7-channel ∆Σ sampling, harmonic analysis, and secure firmware update handling. Use Value: 24-bit ∆Σ A/D with factory-calibrated gain/impedance registers eliminates external calibration, reducing BOM cost and test time. |
Use Scenario: Compact BLDC motor drive with field-oriented control (FOC), current sensing, and thermal protection. IC Role / Device Role / Timing Role: Real-time control unit executing FOC algorithm at 20 kHz PWM, coordinating MTU2 timers for gate drive timing and ADC sampling triggers. Use Value: ELC-triggered ADC conversion synchronized to PWM edges ensures consistent current sampling phase, improving torque ripple <5%. |
| Programmable Logic Controller (PLC) I/O Module | Industrial IoT Edge Node |
|
Use Scenario: DIN-rail mounted analog input module with 4–20 mA loop power, isolation, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Signal conditioning and protocol stack processor interfacing with isolated RSPI and SCI peripherals. Use Value: Dual A/D subsystems allow simultaneous high-resolution process variable acquisition (24-bit ∆Σ) and fast diagnostics (10-bit SAR), increasing channel density per module. |
Use Scenario: Battery-powered predictive maintenance sensor node monitoring vibration, temperature, and humidity with edge analytics. IC Role / Device Role / Timing Role: Low-power host MCU managing sensor fusion, AES-encrypted data upload, and deep standby wake-up on threshold events. Use Value: Deep software standby with RTC and ELC-initiated wake-up extends 2000-mAh battery life to >5 years in periodic sampling mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A7BDFN | Same core, memory, and peripheral set; differs only in package (80-pin LQFP vs. 64-pin LQFP) and I/O count (51 vs. 38 pins). | Requires PCB redesign due to larger footprint and additional I/Os - suitable when extra GPIOs or SCI/I²C channels are needed. | Select R5F521A7BDFN only if design requires ≥51 GPIOs or additional peripheral instances not available in 64-pin variant. |
| R5F521A6BDFM | Lower memory configuration: 256-Kbyte flash, 32-Kbyte RAM, same 64-pin LQFP package and peripheral complement. | Targeted at cost-sensitive applications with simpler firmware (e.g., basic sensor hub or relay controller) where 384-Kbyte flash headroom is unnecessary. | Choose R5F521A6BDFM when application firmware size remains under 220 Kbytes and RAM usage stays below 28 Kbytes to reduce BoM cost. |
Compared with R5F521A7BDFN, R5F521A7BDFM#30 offers identical real-time performance and analog precision in a smaller footprint but trades I/O count for board space savings; versus R5F521A6BDFM, it provides 128 Kbytes more flash and 32 Kbytes more RAM for future firmware expansion or enhanced feature sets without changing layout.
Availability
R5F521A7BDFM#30 is available at Aetrix Electronics and suitable for smart metering, industrial motor drives, PLC I/O modules, and battery-powered IIoT edge nodes requiring stable component supply and long-term industrial lifecycle support.
Supply support for R5F521A7BDFM#30 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, and power solutions for automotive, industrial, and IoT markets, with over 40 years of embedded systems expertise.
The RX21A Group - including R5F521A7BDFM#30 - was designed specifically for high-accuracy industrial sensing and control, integrating metrology-grade analog front-ends, safety-certifiable peripherals, and low-power execution for metering and motor applications.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A7BDFM#30?
The R5F521A7BDFM#30 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance. This is achieved using the 32-bit RX CPU core with a 5-stage pipeline, variable-length instructions, and hardware multiplier/divider - enabling real-time execution of complex control algorithms such as field-oriented motor control or harmonic analysis in smart meters without external co-processors.
Does the R5F521A7BDFM#30 support IEC60730 functional safety compliance?
Yes, the R5F521A7BDFM#30 includes hardware-assisted self-test features required for Class B compliance under IEC60730, including A/D converter diagnostic routines, clock accuracy measurement (CAC), independent watchdog timer (IWDT), RAM test support, and analog input disconnection detection - all documented in the RX21A Group Hardware Manual and supported by Renesas' safety software libraries.
How many analog-to-digital converter subsystems does the R5F521A7BDFM#30 integrate, and what are their key specifications?
The R5F521A7BDFM#30 integrates two independent A/D subsystems: a 24-bit delta-sigma converter with 7 channels (4 differential + 3 single-ended), SNDR = 85 dB, and programmable gain up to ×64; and a 10-bit successive-approximation register (SAR) converter with 7 channels and 2.0 μs conversion time. Both support self-diagnostic and disconnection detection functions.
What package type and pin count does the R5F521A7BDFM#30 use, and is it RoHS-compliant?
The R5F521A7BDFM#30 uses the PLQP0064KB-A package: a 64-pin LQFP measuring 10 × 10 mm with 0.5-mm pitch. It is RoHS-compliant, halogen-free, and qualified for industrial temperature range (−40°C to +85°C), making it suitable for high-density PCB layouts in harsh environments without lead-free soldering restrictions.
Can the R5F521A7BDFM#30 perform AES encryption/decryption in hardware, and what key lengths are supported?
Yes, the R5F521A7BDFM#30 includes a dedicated Data Encryption Unit (DEU) that performs AES encryption and decryption in hardware. It supports 128-bit, 192-bit, and 256-bit key lengths in both ECB and CBC modes - enabling secure firmware updates, encrypted sensor data transmission, and device authentication without consuming CPU cycles or exposing keys in software memory.
R5F521A7BDFM#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RX200
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- RX
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, IrDA, SCI, SPI
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 3x24b, 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F521A7BDFM#30 FAQ
1.How can I place an order for R5F521A7BDFM#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A7BDFM#30 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 R5F521A7BDFM#30 reliable?
The price and inventory of R5F521A7BDFM#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A7BDFM#30 is usually 5 days.
3.What payment methods are accepted for R5F521A7BDFM#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A7BDFM#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A7BDFM#30?
R5F521A7BDFM#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A7BDFM#30 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 R5F521A7BDFM#30?
For technical support, including R5F521A7BDFM#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A7BDFM#30 requirements.
6.How does Aetrix verify that R5F521A7BDFM#30 is sourced from the original manufacturer or authorized distributors?
All R5F521A7BDFM#30 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 R5F521A7BDFM#30 meets industry standards.
7.What is the process for return or replacement of R5F521A7BDFM#30?
All R5F521A7BDFM#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A7BDFM#30, 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 R5F521A7BDFM#30 part is unused and in its original packaging.
Return procedure for R5F521A7BDFM#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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