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Renesas R5F521A8BDFP#30
- Part No.:
- R5F521A8BDFP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F521A8BDFP#30.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 100LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,951
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Product details
Overview
R5F521A8BDFP#30 from Renesas Electronics is a 50-MHz, 32-bit RX CPU-based microcontroller with integrated 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB), 512-Kbyte on-chip flash, 64-Kbyte SRAM, and hardware AES encryption (128/192/256-bit keys). It supports deep software standby with RTC retention and operates from 1.8 V to 3.6 V, targeting precision industrial sensing and metering applications.
For engineers reviewing the R5F521A8BDFP#30 datasheet, R5F521A8BDFP#30 pinout, R5F521A8BDFP#30 application, or R5F521A8BDFP#30 equivalent, this MCU delivers deterministic real-time control, high-accuracy analog front-end performance, low-power operation down to deep standby, and IEC60730-compliant self-test features for safety-critical embedded systems.
Technical Context
The R5F521A8BDFP#30 implements a CISC Harvard architecture with 5-stage pipeline, supporting 78 DMIPS at 50 MHz and 64-bit accumulator results from single-cycle 32×32-bit multiply operations. Its memory protection unit (MPU) enforces secure code execution, while the on-chip debugging circuit enables FINE-based emulation without external probes.
It integrates dual A/D subsystems: a 24-bit ∆Σ converter with x64 PGA for differential current sensing and a 10-bit SAR converter (2.0 μs conversion time), both supported by self-diagnostic and disconnection-detection functions. The ELC and MPC allow event-triggered peripheral operation and flexible pin remapping without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC core with 5-stage pipeline, 78 DMIPS @ 50 MHz |
| Max Operating Frequency | 50 MHz (requires VCC ≥ 2.7 V) |
| Flash Memory | 512 Kbytes, zero-wait-state access at full CPU speed |
| Data Flash | 8 Kbytes, rated for 100,000 erase/write cycles, CPU-independent operation |
| ∆Σ A/D Converter | 24-bit resolution, 7-channel (4 diff + 3 SE), SNDR = 85 dB, x64 PGA gain |
| Operating Temperature | −40°C to +85°C (D-grade industrial specification) |
| Package | 100-pin LQFP (PLQP0100KB-A), 14 × 14 mm, 0.5-mm pitch |
| Supply Voltage | 1.8 V to 3.6 V (2.7–3.6 V required for ∆Σ A/D operation) |
Pinout & Package
Package: 100-pin LQFP (PLQP0100KB-A), 14 × 14 mm body, 0.5-mm lead pitch, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCC0/AVSS0, AVCCA/AVSSA); decoupling required per pin group |
| XTAL / EXTAL | Main clock oscillator interface | Supports crystal resonator (1–20 MHz) or external clock input; used for PLL input (4–12.5 MHz) |
| XCIN / XCOUT | Sub-clock oscillator interface | 32.768-kHz crystal connection for RTC and low-power timing |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ A/D differential inputs | Four fully differential input pairs supporting programmable PGA gain (x1–x64) for current-sensing applications |
| AN0–AN6 | 10-bit A/D single-ended inputs | Seven dedicated analog input pins with sample-and-hold and external trigger (ADTRG0#) support |
| DA0 / DA1 | 10-bit D/A outputs | Two voltage-output DACs referenced to VREFH/VREFL, usable for calibration or analog feedback generation |
| MTIOC0A–MTIOC5D | Multi-function timer I/O | Six 16-bit MTU channels provide PWM, complementary output, phase counting, and A/D trigger generation |
| SCIx (RXD/TXD/SCK/CTS/RTS) | Serial communications interface | Five SCI channels including IrDA-capable SCI5; support asynchronous, clock-sync, and smart card modes |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Safety Support | Integrated self-test for A/D converter, clock accuracy (CAC), IWDT, RAM, and analog input disconnection detection |
| Event Link Controller (ELC) | Direct hardware linking of 69 event sources to peripherals (e.g., timer triggers A/D conversion) without CPU interrupt overhead |
| Multi-function Pin Controller (MPC) | Runtime reassignment of up to 66 I/O pins across multiple peripheral functions (SCI, I²C, RSPI, etc.) |
| Hardware Data Encryption Unit (DEU) | AES-128/192/256 encryption/decryption in ECB/CBC mode, offloading crypto processing from CPU |
| Low-Power Operation | Four distinct low-power modes including deep software standby with RTC active and wake-up via external event or RTC alarm |
| Temperature Sensor | On-die sensor with three PGA gain settings and factory-calibrated registers (TSCDRn) for ±1.5°C accuracy |
Applications
| Industrial Energy Metering | Smart Grid Sensor Node |
|---|---|
|
Use Scenario: High-accuracy electricity consumption measurement in DIN-rail mounted meters with harmonic analysis and tamper detection. IC Role / Device Role / Timing Role: Primary system controller executing metrology algorithms, managing isolated communication, and maintaining time-stamped energy logs via RTC. Use Value: 24-bit ∆Σ A/D with 85 dB SNDR enables Class 0.2 accuracy; deep standby preserves RTC during mains loss; DEU secures firmware updates over HAN. |
Use Scenario: Battery-powered distribution transformer monitor collecting voltage, current, and temperature data for predictive maintenance. IC Role / Device Role / Timing Role: Low-power sensing hub performing synchronized multi-channel sampling, local analytics, and scheduled LoRaWAN transmission. Use Value: Simultaneous 7-channel ∆Σ sampling captures waveform distortion; ELC-triggered A/D eliminates CPU polling; 8.6 mA @ 50 MHz extends battery life. |
| Medical Diagnostic Instrument | Factory Automation IO-Link Master |
|
Use Scenario: Portable blood glucose or ECG analyzer requiring precise analog signal acquisition and regulatory-compliant firmware integrity. IC Role / Device Role / Timing Role: Real-time signal processor with built-in safety diagnostics, secure boot, and calibrated analog front-end. Use Value: IEC60730 self-tests validate A/D, clock, and RAM before each measurement; 10-bit D/A provides reference calibration signals; unique ID (UIDRn) enables device traceability. |
Use Scenario: Industrial fieldbus gateway aggregating sensor data from multiple IO-Link devices and forwarding to PLC via EtherCAT or PROFINET. IC Role / Device Role / Timing Role: Protocol translation engine with deterministic timing, isolated serial interfaces, and robust ESD-tolerant I/O. Use Value: Five SCI channels support concurrent IO-Link masters; 5-V tolerant GPIOs interface directly to field sensors; MPC simplifies PCB layout for mixed-voltage I/O routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A8BGFP#30 | Same core, flash, RAM, and peripherals; rated for −40°C to +105°C (G-grade) vs. D-grade (−40°C to +85°C) | Required for under-hood automotive or high-ambient industrial enclosures where extended temperature operation is mandatory | Select R5F521A8BGFP#30 when ambient operating temperature exceeds +85°C; otherwise R5F521A8BDFP#30 is optimal for standard industrial environments. |
| R5F521A7BDFP#30 | Identical package and temperature grade, but reduced 384-Kbyte flash and same 64-Kbyte RAM | Suitable for cost-sensitive designs where firmware footprint fits within 384 Kbytes and no future feature expansion is planned | Choose R5F521A7BDFP#30 only if verified firmware size remains ≤384 Kbytes; R5F521A8BDFP#30 provides headroom for OTA updates and enhanced safety libraries. |
Compared with R5F521A8BGFP#30 and R5F521A7BDFP#30, the R5F521A8BDFP#30 offers the highest flash capacity within the industrial temperature range, enabling complex metrology algorithms and IEC60730-compliant diagnostic routines without thermal derating constraints.
Availability
R5F521A8BDFP#30 is available at Aetrix Electronics and suitable for industrial energy metering, smart grid sensor nodes, medical diagnostic instruments, and factory automation IO-Link master applications requiring stable component supply and long-term production continuity.
Supply support for R5F521A8BDFP#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 industrial, automotive, and IoT markets.
The RX21A Group, including the R5F521A8BDFP#30, was designed for high-precision analog-intensive applications such as energy metering and industrial sensing, integrating metrology-grade A/D converters with real-time MCU performance and functional safety features.
FAQ
What is the maximum operating frequency and supply voltage requirement for the R5F521A8BDFP#30?
The R5F521A8BDFP#30 achieves a maximum operating frequency of 50 MHz, which requires a supply voltage of 2.7 V to 3.6 V. At lower voltages (1.8 V to 2.6 V), the maximum frequency is reduced to 25 MHz. The 24-bit ∆Σ A/D converter specifically requires VCC ≥ 2.7 V to operate, as stated in the datasheet's electrical characteristics section.
Does the R5F521A8BDFP#30 support hardware-accelerated cryptography?
Yes, the R5F521A8BDFP#30 includes a dedicated Data Encryption Unit (DEU) that performs AES encryption and decryption with 128-, 192-, or 256-bit keys in ECB or CBC mode. This hardware accelerator operates independently of the CPU, enabling secure firmware updates and data-at-rest protection without impacting real-time task scheduling in the R5F521A8BDFP#30.
How many analog-to-digital converter subsystems does the R5F521A8BDFP#30 integrate, and what are their key distinctions?
The R5F521A8BDFP#30 integrates two independent A/D subsystems: a 24-bit delta-sigma (ΔΣ) converter with seven channels (four differential, three single-ended) and 85 dB SNDR, plus a 10-bit successive-approximation (SAR) converter with seven channels and 2.0 μs conversion time. The ΔΣ unit targets high-resolution current/voltage sensing; the SAR unit provides fast auxiliary measurements and supports self-diagnostic functions.
What low-power modes are available on the R5F521A8BDFP#30, and which retain RTC functionality?
The R5F521A8BDFP#30 supports four low-power modes: Sleep, All-Module Clock Stop, Software Standby, and Deep Software Standby. Only Deep Software Standby retains RTC operation using the 32.768-kHz sub-clock, allowing timekeeping and alarm-based wake-up while consuming minimal current. The RTC can initiate exit from this mode upon alarm or periodic interrupt, making it ideal for time-critical metering applications.
Is the R5F521A8BDFP#30 pin-compatible with other members of the RX21A Group?
The R5F521A8BDFP#30 uses the 100-pin LQFP (PLQP0100KB-A) package and shares identical pin assignments with all other RX21A Group devices in that package variant, including R5F521A7BDFP#30 and R5F521A8BGFP#30. Pin compatibility is confirmed in Table 1.2 and Figure 1.3 of the datasheet, enabling drop-in replacement for flash/RAM or temperature-grade upgrades without PCB redesign.
R5F521A8BDFP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-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:
- 66
- 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 7x24b, 7x10b; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F521A8BDFP#30 FAQ
1.How can I place an order for R5F521A8BDFP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A8BDFP#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 R5F521A8BDFP#30 reliable?
The price and inventory of R5F521A8BDFP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A8BDFP#30 is usually 5 days.
3.What payment methods are accepted for R5F521A8BDFP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A8BDFP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A8BDFP#30?
R5F521A8BDFP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A8BDFP#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 R5F521A8BDFP#30?
For technical support, including R5F521A8BDFP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A8BDFP#30 requirements.
6.How does Aetrix verify that R5F521A8BDFP#30 is sourced from the original manufacturer or authorized distributors?
All R5F521A8BDFP#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 R5F521A8BDFP#30 meets industry standards.
7.What is the process for return or replacement of R5F521A8BDFP#30?
All R5F521A8BDFP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A8BDFP#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 R5F521A8BDFP#30 part is unused and in its original packaging.
Return procedure for R5F521A8BDFP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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