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Renesas R5F521A6BDFN#30
- Part No.:
- R5F521A6BDFN#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F521A6BDFN#30.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,893
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Product details
Overview
R5F521A6BDFN#30 from Renesas Electronics is a 32-bit RX CPU-based microcontroller operating at up to 50 MHz (78 DMIPS), featuring 256 KB on-chip flash, 32 KB SRAM, 8 KB data flash, integrated 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB), 10-bit A/D and D/A converters, DEU AES encryption, RTC with deep software standby wake-up, and nine communication interfaces including SCI, I²C, RSPI, and IrDA. It targets precision sensor signal conditioning in industrial metering systems.
For engineers reviewing the R5F521A6BDFN#30 datasheet, R5F521A6BDFN#30 pinout, R5F521A6BDFN#30 application, or R5F521A6BDFN#30 equivalent, this MCU delivers deterministic real-time control, high-resolution analog acquisition, secure firmware updates, and low-power operation across −40°C to +85°C - critical for smart grid sensors, battery-powered instrumentation, and IEC60730-compliant appliances.
Technical Context
The R5F521A6BDFN#30 implements a CISC Harvard architecture with 5-stage pipeline, 64-bit accumulator for single-cycle 32×32 multiply-accumulate, and memory protection unit (MPU). Its clock system integrates PLL (4–12.5 MHz input), sub-clock oscillator (32.768 kHz), and dedicated IWDT oscillator (125 kHz), enabling independent domain clocking (ICLK up to 50 MHz, PCLK up to 25 MHz).
It supports simultaneous 7-channel 24-bit ∆Σ conversion with programmable gain (×1–×64 differential), 10-bit SAR ADC (2.0 μs conversion), dual 10-bit DAC outputs, and event-driven peripheral activation via ELC - allowing timer-triggered ADC sampling, DMA transfers without CPU intervention, and RTC-initiated wake-up from deep software standby mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard, 50 MHz max, 78 DMIPS, 64-bit accumulator |
| Memory | 256 KB flash (no wait states @50 MHz), 32 KB SRAM, 8 KB data flash (100k erase/write cycles) |
| Analog Peripherals | 24-bit ∆Σ ADC (7 ch, SNDR=85 dB, ×1–×64 PGA), 10-bit SAR ADC (7 ch, 2.0 μs), 2×10-bit DAC, 4× comparator |
| Clock & Power | 1.8–3.6 V supply; deep software standby with RTC active; four low-power modes; 125 kHz IWDT oscillator |
| Connectivity | 5× SCI (1 with IrDA), 2× I²C (400 kbps), 2× RSPI, ELC, MPC, DEU (AES-128/192/256) |
| Package & Temp | 80-pin LQFP (PLQP0080KB-A), 12×12 mm, 0.5 mm pitch; −40°C to +85°C operating range |
| Real-Time Features | RTC with leap-year/calendar, time capture on external event, wake-up from deep standby; 14-bit WDT/IWDT |
Pinout & Package
80-pin LQFP package (PLQP0080KB-A), 12×12 mm body, 0.5 mm pitch, exposed pad not specified. Pin functions validated per Renesas R01DS0129EJ0110 Rev.1.10 datasheet Section 1.4 and Figure 1.4 (80-pin assignment).
| 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 |
| XTAL / EXTAL | Main clock input | Supports crystal (1–20 MHz) or external clock; enables precise timing for PLL and system clock generation |
| XCIN / XCOUT | Sub-clock oscillator | 32.768 kHz crystal interface for RTC and low-power timekeeping during deep standby |
| RES# | Active-low reset | Asynchronous hardware reset; initiates full system initialization and register clearing |
| MTIOC0A–MTIOC3D | PWM / capture I/O | 16 dedicated pins for complementary PWM, phase counting, and input capture across MTU2 channels 0–3 |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ ADC differential inputs | Four matched differential pairs for current-sensing applications; support programmable gain up to ×64 |
| ANDS4–ANDS6 | ∆Σ ADC single-ended inputs | Three voltage-input channels referenced to ANDSSG; used for auxiliary sensor monitoring |
| AN0–AN6 | 10-bit ADC inputs | Seven general-purpose analog inputs with internal sample-and-hold; support self-diagnostic and disconnection detection |
| DA0 / DA1 | D/A converter outputs | Two buffered 10-bit voltage outputs (0 V to VREFH); usable for calibration references or analog actuator control |
| SCI5_TXD / SCI5_RXD / IRTXD5 / IRRXD5 | IrDA interface | Dedicated SCI5 channel with integrated IrDA encoder/decoder per IrDA 1.0 spec; requires no external transceiver |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit ∆Σ A/D Converter | 7-channel simultaneous operation with 85 dB SNDR and selectable PGA gain (×1–×64) enables high-accuracy current/voltage measurement in energy meters |
| Event Link Controller (ELC) | Direct hardware triggering of ADC conversion, DMA transfer, or timer start without CPU interrupt latency - essential for deterministic real-time response |
| Data Encryption Unit (DEU) | AES-128/192/256 encryption/decryption in ECB/CBC mode allows secure firmware updates and protected data storage in connected devices |
| Deep Software Standby Mode | RTC remains fully operational while CPU and most peripherals are powered down; wake-up via RTC alarm or external pin event reduces system power to microamp range |
| IEC60730 Compliance Support | Integrated self-test features for A/D converter, clock accuracy (CAC), IWDT, RAM, and analog input disconnection detection simplify Class B safety certification |
Applications
| Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Three-phase electricity meter with harmonic analysis and tamper detection. IC Role / Device Role / Timing Role: Primary signal acquisition and processing MCU, synchronizing ∆Σ ADC sampling to line frequency via ELC-triggered timers. Use Value: 24-bit resolution and 85 dB SNDR enable Class 0.2 accuracy; integrated DEU secures firmware against unauthorized modification. |
Use Scenario: Battery-powered wireless pressure/temperature transmitter in hazardous area. IC Role / Device Role / Timing Role: Low-power host controller managing sensor readout, local compensation, and secure data packaging before RF transmission. Use Value: Deep software standby with RTC wake-up extends battery life to >5 years; temperature sensor and 10-bit ADC provide on-chip calibration reference. |
| Smart Appliance Control | Medical Diagnostic Equipment |
Use Scenario: IEC60730-compliant washing machine motor control with load sensing and fault logging. IC Role / Device Role / Timing Role: Safety-critical main controller executing motor commutation, current monitoring, and runtime diagnostics. Use Value: Built-in A/D self-test, clock accuracy check (CAC), and IWDT meet Class B requirements without external supervision circuitry. |
Use Scenario: Portable ECG monitor requiring high-fidelity biopotential signal acquisition and real-time QRS detection. IC Role / Device Role / Timing Role: Analog front-end processor capturing differential electrode signals via ∆Σ ADC and performing baseline correction. Use Value: Differential ∆Σ inputs with ×64 PGA reject common-mode noise; 10-bit DAC generates precise reference voltages for analog circuit biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A6BDFP | Same core, memory, and peripherals; 100-pin LQFP (PLQP0100KB-A), 14×14 mm, adds 15 more GPIO and 3 extra ∆Σ ADC channels | Required when >51 GPIO or full 7-channel ∆Σ ADC concurrency is needed; larger PCB footprint | Select R5F521A6BDFP if board layout accommodates 100-pin LQFP and additional I/O or analog channels are necessary. |
| R5F521A6BDLJ | Same specs but 100-pin TFLGA (PTLG0100JA-A), 7×7 mm, 0.65 mm pitch; identical functionality, smaller footprint, different thermal/mechanical profile | Suitable for space-constrained designs where ultra-compact size outweighs rework complexity of fine-pitch BGA-like package | Choose R5F521A6BDLJ only for high-density layouts where 7×7 mm footprint is mandatory and assembly capability supports 0.65 mm pitch. |
Compared with R5F521A6BDFN#30, R5F521A6BDFP offers expanded I/O and analog resources in a larger LQFP, while R5F521A6BDLJ delivers identical functionality in a miniature TFLGA - making the #30 variant the optimal balance of compactness, pin count (51 GPIO), and manufacturability for mid-volume industrial modules.
Availability
R5F521A6BDFN#30 is available at Aetrix Electronics and suitable for industrial metering, battery-powered sensor nodes, smart appliance control, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for R5F521A6BDFN#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The RX21A Group - including R5F521A6BDFN#30 - was designed for high-precision analog-intensive applications such as energy metering, industrial sensing, and IEC60730-compliant control systems requiring integrated ∆Σ ADC, low-power RTC, and hardware security.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A6BDFN#30?
The R5F521A6BDFN#30 operates at a maximum frequency of 50 MHz, delivering 78 DMIPS of processing performance. Its 32-bit RX CPU core features a 5-stage pipeline, variable-length instructions, and a 64-bit accumulator capable of handling 32×32-bit multiplication results in a single instruction cycle - enabling efficient digital filtering and real-time control tasks within the R5F521A6BDFN#30.
Does the R5F521A6BDFN#30 support hardware encryption, and what algorithms are implemented?
Yes, the R5F521A6BDFN#30 integrates a Data Encryption Unit (DEU) supporting AES encryption and decryption with key lengths of 128, 192, or 256 bits in both ECB and CBC modes. This hardware-accelerated crypto engine offloads the CPU during secure boot, firmware update validation, and protected data logging - a core capability of the R5F521A6BDFN#30 for IEC60730 and IoT security requirements.
How many analog-to-digital converter channels does the R5F521A6BDFN#30 include, and what are their key specifications?
The R5F521A6BDFN#30 integrates two independent ADC subsystems: a 24-bit delta-sigma (ΔΣ) ADC with seven channels (four differential, three single-ended) achieving 85 dB SNDR and programmable gain up to ×64; and a 10-bit successive-approximation (SAR) ADC with seven channels and 2.0 μs conversion time. Both are accessible simultaneously and supported by self-diagnostic and disconnection-detection features in the R5F521A6BDFN#30.
What low-power modes are available on the R5F521A6BDFN#30, and which peripherals remain active in deep software standby?
The R5F521A6BDFN#30 supports four low-power modes, including deep software standby where the CPU, flash, and most peripherals are halted while the RTC, IWDT, and sub-clock oscillator remain active. In this mode, the R5F521A6BDFN#30 consumes microamp-level current and can wake up via RTC alarm, external pin event (RTCIC0–RTCIC2), or IWDT timeout - enabling multi-year battery operation in remote sensing applications.
Is the R5F521A6BDFN#30 pin-compatible with other members of the RX21A Group, and what package options exist?
The R5F521A6BDFN#30 uses an 80-pin LQFP (PLQP0080KB-A) package and is functionally compatible - but not pin-compatible - with 100-pin (R5F521A6BDFP) and 64-pin (R5F521A6BDFM) variants due to differing pin counts and I/O allocations. All RX21A Group parts share identical peripheral registers and software architecture, allowing code reuse across packages - a key design flexibility of the R5F521A6BDFN#30 family.
R5F521A6BDFN#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:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K 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:
R5F521A6BDFN#30 FAQ
1.How can I place an order for R5F521A6BDFN#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A6BDFN#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 R5F521A6BDFN#30 reliable?
The price and inventory of R5F521A6BDFN#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A6BDFN#30 is usually 5 days.
3.What payment methods are accepted for R5F521A6BDFN#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A6BDFN#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A6BDFN#30?
R5F521A6BDFN#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A6BDFN#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 R5F521A6BDFN#30?
For technical support, including R5F521A6BDFN#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A6BDFN#30 requirements.
6.How does Aetrix verify that R5F521A6BDFN#30 is sourced from the original manufacturer or authorized distributors?
All R5F521A6BDFN#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 R5F521A6BDFN#30 meets industry standards.
7.What is the process for return or replacement of R5F521A6BDFN#30?
All R5F521A6BDFN#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A6BDFN#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 R5F521A6BDFN#30 part is unused and in its original packaging.
Return procedure for R5F521A6BDFN#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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