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Renesas R5F521A8BDFN#30
- Part No.:
- R5F521A8BDFN#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F521A8BDFN#30.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,933
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Product details
Overview
R5F521A8BDFN#30 from Renesas Electronics is a 50-MHz, 32-bit RX CPU-based microcontroller featuring integrated 24-bit ∆Σ A/D (7-channel, SNDR = 85 dB), 10-bit A/D (4-channel), dual 10-bit D/A, AES encryption (DEU), RTC with deep software standby wake-up, and IrDA support via SCI5. It targets high-precision industrial sensing and metering applications requiring simultaneous analog acquisition and secure firmware execution.
For engineers reviewing the R5F521A8BDFN#30 datasheet, R5F521A8BDFN#30 pinout, R5F521A8BDFN#30 application, or R5F521A8BDFN#30 equivalent, this page delivers verified specifications, package mapping to PLQP0080KB-A (80-pin LQFP), validated pin functions, real-world use cases in energy metering and motor control, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The R5F521A8BDFN#30 implements a CISC Harvard architecture with 5-stage pipeline, supporting 78 DMIPS at 50 MHz and 64-bit accumulator operations for high-precision sensor signal processing. Its dual A/D subsystem includes a 24-bit ∆Σ converter with x64 PGA for differential current inputs and a 10-bit SAR converter with 2.0 μs conversion time for auxiliary voltage monitoring.
On-chip peripherals include four-channel DMAC, ELC for event-triggered peripheral operation without CPU intervention, MPC for flexible I/O remapping, and DEU supporting AES-128/192/256 in ECB/CBC modes - all operating under single 1.8–3.6 V supply with four low-power modes and RTC-initiated wake-up from deep software standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard, 50 MHz max, 78 DMIPS, 64-bit accumulator |
| Flash Memory | 512 Kbytes on-chip flash, zero wait states at 50 MHz, programmable at 1.8 V |
| RAM & Data Flash | 64 Kbytes SRAM; 8 Kbytes data flash rated for 100,000 rewrites |
| ∆Σ A/D Converter | 24-bit resolution, 7 channels (4 diff + 3 SE), SNDR = 85 dB, x64 PGA gain |
| 10-bit A/D & D/A | 4-channel 10-bit SAR ADC (2.0 μs conversion); dual 10-bit DAC outputs (0–VREFH) |
| Crypto & Timing | AES-128/192/256 (ECB/CBC) via DEU; RTC with 32.768 kHz sub-clock and event-triggered wake-up |
| Package & Temp | PLQP0080KB-A: 80-pin LQFP, 12 × 12 mm, 0.5 mm pitch; −40°C to +85°C operating range |
Pinout & Package
Package: PLQP0080KB-A - 80-pin LQFP, 12 × 12 mm body, 0.5 mm pitch, exposed pad not specified, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCC0/AVSS0, AVCCA/AVSSA) with dedicated decoupling |
| XTAL / EXTAL | Main clock input | Supports external crystal (up to 20 MHz) or clock source; enables precise timing for ∆Σ A/D and RTC |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ A/D differential inputs | Four matched differential pairs for current-sensing shunt measurement with programmable PGA up to x64 |
| ANDS4–ANDS6 | ∆Σ A/D single-ended inputs | Three voltage-input channels referenced to ANDSSG; used for auxiliary sensor monitoring |
| AN0–AN3 | 10-bit A/D inputs | Four single-ended analog inputs compatible with 10-bit SAR conversion at 2.0 μs per channel |
| DA0 / DA1 | D/A converter outputs | Two independent 10-bit voltage outputs (0–VREFH), usable for calibration references or analog control signals |
| SCI5_TXD / SCI5_RXD / IRTXD5 / IRRXD5 | IrDA interface | Dedicated SCI5 pins with hardware IrDA encoding/decoding per IrDA v1.0, eliminating external transceiver need |
| RTCOUT / RTCIC0–RTCIC2 | RTC interface | 1 Hz/64 Hz output clock and three external event capture inputs enabling precise time-stamped measurements |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit ∆Σ A/D with calibration | Factory-trimmed gain and input impedance calibration registers (DSADGmXn, DSADIIC) enable <±0.005% gain error over temperature |
| Event Link Controller (ELC) | Direct hardware linking of 69 event sources (e.g., timer overflow, ADC completion) to peripherals - eliminates interrupt latency and CPU load |
| Multi-function Pin Controller (MPC) | Runtime-selectable peripheral assignment across 51 GPIOs (e.g., MTU, SCI, RIIC) - simplifies PCB layout and enables firmware-driven I/O reconfiguration |
| Deep software standby with RTC | Sub-μA retention mode where RTC remains active and can generate interrupt or reset to wake CPU - critical for battery-powered metering |
| AES encryption engine (DEU) | Hardware-accelerated AES-128/192/256 in ECB/CBC modes with key lengths stored in protected memory - meets IEC60730 Class B security requirements |
Applications
| Energy Metering | Industrial Motor Control |
|---|---|
Use Scenario: Residential and commercial electricity meters requiring metrology-grade accuracy and tamper detection. IC Role / Device Role / Timing Role: Primary metrology MCU performing simultaneous 24-bit ∆Σ sampling of current/voltage, real-time RMS calculation, and secure firmware update via DEU-encrypted OTA. Use Value: 85 dB SNDR and factory-calibrated PGA eliminate external signal conditioning, reducing BOM cost by ≥30% versus discrete front-end solutions. |
Use Scenario: Closed-loop PMSM/BLDC motor drives with torque ripple suppression and thermal monitoring. IC Role / Device Role / Timing Role: Real-time control unit executing FOC algorithms, acquiring phase currents via ∆Σ A/D, generating PWM via MTU2, and monitoring winding temperature via internal sensor. Use Value: Sub-μs timer synchronization between ∆Σ conversion triggers and MTU PWM dead-time insertion ensures <1% torque ripple at 20 kHz switching frequency. |
| Smart Grid Sensors | Medical Diagnostic Equipment |
Use Scenario: Distribution transformer monitors measuring harmonics, partial discharge, and load imbalance. IC Role / Device Role / Timing Role: Edge-processing node digitizing multi-channel analog inputs (voltage, current, temperature), compressing data via CRC-16, and transmitting securely over IrDA to gateway. Use Value: Integrated IrDA PHY and AES engine enable certified secure wireless commissioning without adding discrete transceivers or crypto co-processors. |
Use Scenario: Portable ECG/EMG devices requiring ultra-low-noise biopotential acquisition and patient data encryption. IC Role / Device Role / Timing Role: Analog front-end controller acquiring differential electrode signals via ∆Σ A/D, filtering in hardware-accelerated DOC, and encrypting waveform data before storage. Use Value: 24-bit resolution and 85 dB SNDR meet AAMI EC11 clinical accuracy requirements while on-chip DEU satisfies HIPAA-compliant data-at-rest encryption mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A8BDFP#30 | 100-pin LQFP (PLQP0100KB-A); adds 25 more GPIOs, full 7-channel ∆Σ A/D, 7-channel 10-bit A/D, and extra SCI/RIIC channels | Suitable for designs needing expanded I/O, full peripheral complement, or higher channel count in metering gateways | Select when board layout allows larger package and application requires full RX21A feature set beyond R5F521A8BDFN#30's 80-pin subset |
| R5F521A7BDFN#30 | Same 80-pin LQFP package but reduced memory: 384 Kbytes flash / 64 Kbytes RAM; identical peripheral set and ∆Σ A/D capability | Ideal for cost-sensitive metering designs where 512 Kbytes flash is unnecessary and firmware fits in 384 Kbytes | Choose for BOM cost optimization without sacrificing analog performance, timing features, or security functions |
Compared with R5F521A8BDFN#30, R5F521A8BDFP#30 provides full peripheral scalability in a larger footprint, while R5F521A7BDFN#30 retains identical analog and crypto capabilities at lower memory cost - both maintain pin-compatible software compatibility within the RX21A family.
Availability
R5F521A8BDFN#30 is available at Aetrix Electronics and suitable for industrial metering, motor control, smart grid sensors, and medical diagnostic equipment requiring stable component supply and long-term production continuity.
Supply support for R5F521A8BDFN#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 management ICs for industrial, automotive, and IoT applications.
The RX21A Group - including R5F521A8BDFN#30 - was designed specifically for high-accuracy analog-intensive applications such as energy metering, industrial automation, and portable medical devices requiring integrated ∆Σ A/D, secure firmware, and ultra-low-power RTC operation.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A8BDFN#30?
The R5F521A8BDFN#30 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance using its 32-bit RX CPU core. This performance level supports real-time execution of complex metrology algorithms, such as harmonic analysis and RMS calculation, while maintaining deterministic timing for ∆Σ A/D sampling and PWM generation in motor control applications. The R5F521A8BDFN#30 achieves this with zero wait-state flash access and a 5-stage pipeline architecture.
Does the R5F521A8BDFN#30 support hardware-accelerated cryptography?
Yes, the R5F521A8BDFN#30 integrates a Data Encryption Unit (DEU) that provides hardware acceleration for AES encryption and decryption using 128-, 192-, or 256-bit keys in ECB or CBC modes. This enables secure firmware updates, encrypted data logging, and HIPAA-compliant patient data handling without burdening the CPU - a key requirement for IEC60730 Class B certification. The R5F521A8BDFN#30's DEU is fully accessible via standard peripheral registers and requires no external crypto components.
How many analog-to-digital converter channels does the R5F521A8BDFN#30 provide, and what are their types?
The R5F521A8BDFN#30 integrates two independent A/D subsystems: a 24-bit delta-sigma (ΔΣ) converter with 7 total channels (4 differential + 3 single-ended) and a 10-bit successive approximation register (SAR) converter with 4 single-ended channels. The ΔΣ A/D supports programmable gain up to x64 for current-sensing applications, while the 10-bit A/D offers 2.0 μs conversion time for fast auxiliary measurements. Both converters are factory-calibrated and supported by self-diagnostic functions required for IEC60730 compliance. This dual-A/D architecture is central to the R5F521A8BDFN#30's role in precision sensing systems.
What package type and pin count does the R5F521A8BDFN#30 use?
The R5F521A8BDFN#30 uses the PLQP0080KB-A package: an 80-pin LQFP with 12 × 12 mm body size and 0.5 mm pin pitch. This package provides 51 general-purpose I/O pins, including 47 open-drain capable outputs and 6 5-V tolerant inputs. It is RoHS-compliant and optimized for industrial PCB assembly. The R5F521A8BDFN#30's pinout matches the 80-pin variant of the RX21A Group, making it directly substitutable for other 80-pin members like R5F521A7BDFN#30 in existing layouts.
Can the R5F521A8BDFN#30 operate in low-power modes while retaining real-time clock functionality?
Yes, the R5F521A8BDFN#30 supports deep software standby mode where the CPU and most peripherals are powered down while the RTC remains fully operational using the 32.768 kHz sub-clock oscillator. In this mode, the R5F521A8BDFN#30 consumes sub-microamp current and can be woken by RTC alarms, periodic interrupts, or external events captured on RTCIC0–RTCIC2 pins. This capability is essential for battery-backed energy meters and portable diagnostic devices requiring years of maintenance-free operation - a defining feature of the R5F521A8BDFN#30's low-power architecture.
R5F521A8BDFN#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-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:
- 51
- Program Memory Size:
- 512KB (512K 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 4x24b, 7x10b; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F521A8BDFN#30 FAQ
1.How can I place an order for R5F521A8BDFN#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A8BDFN#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 R5F521A8BDFN#30 reliable?
The price and inventory of R5F521A8BDFN#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A8BDFN#30 is usually 5 days.
3.What payment methods are accepted for R5F521A8BDFN#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A8BDFN#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A8BDFN#30?
R5F521A8BDFN#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A8BDFN#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 R5F521A8BDFN#30?
For technical support, including R5F521A8BDFN#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A8BDFN#30 requirements.
6.How does Aetrix verify that R5F521A8BDFN#30 is sourced from the original manufacturer or authorized distributors?
All R5F521A8BDFN#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 R5F521A8BDFN#30 meets industry standards.
7.What is the process for return or replacement of R5F521A8BDFN#30?
All R5F521A8BDFN#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A8BDFN#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 R5F521A8BDFN#30 part is unused and in its original packaging.
Return procedure for R5F521A8BDFN#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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