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Renesas R5F521A6BDFM#V0
- Part No.:
- R5F521A6BDFM#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F521A6BDFM#V0.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,395
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Product details
Overview
R5F521A6BDFM#V0 from Renesas Electronics is a 32-bit RX CPU-based microcontroller with 256 KB on-chip flash, 32 KB SRAM, and 8 KB data flash, operating at up to 50 MHz (78 DMIPS) across −40°C to +85°C. It integrates a 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB), 10-bit A/D (7 channels, 2.0 μs conversion), dual 10-bit D/A outputs, AES encryption (DEU), RTC with deep standby wake-up, and ELC for event-driven peripheral operation-targeted for precision sensor interface and industrial control applications.
For engineers reviewing the R5F521A6BDFM#V0 datasheet, R5F521A6BDFM#V0 pinout, R5F521A6BDFM#V0 application, or R5F521A6BDFM#V0 equivalent, key selection criteria include its 64-pin LQFP package (PLQP0064KB-A), 24-bit ∆Σ A/D channel count and PGA gain range (×1–×64 differential), DEU AES key-length support (128/192/256-bit), and IEC60730-compliant self-diagnostic features for A/D, clock accuracy, and RAM testing.
Technical Context
The R5F521A6BDFM#V0 implements the 32-bit RXv1 core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code and fast interrupt response. Its memory protection unit (MPU), on-chip debugging circuit, and dedicated IWDT oscillator (125 kHz) support functional safety requirements.
It features dual-clock domain operation: system clock (ICLK) up to 50 MHz, peripheral clock (PCLK) up to 25 MHz, and FlashIF clock (FCLK) at 25 MHz. The ELC enables direct module triggering without CPU intervention, while MPC allows flexible peripheral pin assignment across 38 GPIOs in its 64-pin configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv1 32-bit CISC Harvard, 5-stage pipeline, 78 DMIPS @ 50 MHz |
| Flash Memory | 256 KB code flash, zero-wait-state access at 50 MHz, programmable at 1.8 V |
| ∆Σ A/D Converter | 24-bit resolution, 7-channel (4 diff + 3 SE), SNDR = 85 dB, PGA gain ×1–×64 |
| 10-bit A/D & D/A | 7-channel 10-bit A/D (2.0 μs/ch), 2-channel 10-bit D/A (0 V to VREFH output) |
| Crypto Engine | Data Encryption Unit (DEU) supporting AES-128/192/256 in ECB/CBC modes |
| Real-Time Clock | Sub-clock (32.768 kHz) driven RTC with alarm, periodic, and carry interrupts; supports time capture and deep software standby wake-up |
| Operating Range | 1.8–3.6 V supply; −40°C to +85°C ambient temperature (D-grade) |
Pinout & Package
Package: PLQP0064KB-A - 64-pin LQFP, 10 mm × 10 mm, 0.5 mm pitch, surface-mount, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCCA/AVSSA, VREFH/VREFL); decoupling required per datasheet layout guidelines |
| ANDS0N–ANDS3P | ∆Σ A/D differential inputs | Four fully differential input pairs supporting current-sensing with programmable PGA gain (×1–×64) |
| ANDS4–ANDS6 | ∆Σ A/D single-ended inputs | Three voltage-input channels referenced to ANDSSG; used with internal or external reference |
| AN0–AN6 | 10-bit A/D inputs | Seven single-ended analog inputs with sample-and-hold, self-diagnostic, and disconnection detection |
| DA0 / DA1 | D/A converter outputs | Two buffered 10-bit voltage outputs (0 V to VREFH), independent of A/D reference |
| MTIOC0A–MTIOC3D | MTU2 timer I/O | Sixteen PWM/complementary output and input-capture pins across four MTU2 channels for motor control timing |
| SCI5 TX/RX (TXD5/RXD5) | IrDA-capable serial interface | SCI5 configured for IrDA 1.0 encoding/decoding via IRTXD5/IRRXD5 pins |
| RTCOUT / RTCIC0–RTCIC2 | RTC output & event capture | 1 Hz/64 Hz clock output and three external event-trigger inputs for precise time-stamping |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Safety Support | Integrated self-test functions for A/D converter, clock accuracy measurement (CAC), IWDT, and RAM-reducing external diagnostic overhead |
| Event Link Controller (ELC) | 69 event sources directly trigger peripheral modules (e.g., A/D start, PWM reload) without CPU ISR latency or polling |
| Multi-function Pin Controller (MPC) | Permits dynamic reassignment of up to 38 GPIOs to alternate peripheral functions (SCI, I²C, RSPI, etc.) in software |
| Low-Power Operation | Four low-power modes including deep software standby with RTC active and wake-up via external event or alarm |
| On-chip Debugging | FINE interface (via MD/FINED pin) enables full-speed real-time debugging without halting CPU execution |
Applications
| Industrial Sensor Hub | Energy Metering Front-End |
|---|---|
Use Scenario: High-accuracy current and voltage sensing in smart breakers and DIN-rail meters. IC Role / Device Role / Timing Role: Primary signal acquisition MCU handling simultaneous 24-bit ∆Σ sampling (4-channel differential current + 3-channel voltage) with PGA gain calibration and CRC-protected data logging. Use Value: 85 dB SNDR and built-in PGA eliminate external signal conditioning stages; DEU secures firmware updates over HMI interfaces. |
Use Scenario: Residential/utility electricity meter with anti-tampering, thermal drift compensation, and metrology compliance. IC Role / Device Role / Timing Role: Metrology controller executing IEC62053-21/22 algorithms using calibrated ∆Σ A/D, temperature sensor, and RTC for time-of-use billing. Use Value: On-chip calibration registers (DSADGmXn, TSCDRn) enable factory-trimmed accuracy; deep standby preserves RTC during power loss. |
| Motor Control Interface | Smart HVAC Actuator |
Use Scenario: Brushless DC motor driver with hall-effect feedback, current sensing, and closed-loop speed regulation. IC Role / Device Role / Timing Role: Real-time motion controller using six MTU2 channels for complementary PWM generation, input capture for rotor position, and ELC-triggered A/D sampling synchronized to commutation events. Use Value: Sub-microsecond PWM dead-time control and phase-counting mode reduce jitter; 50 MHz CPU ensures deterministic loop execution. |
Use Scenario: Thermostatic valve actuator with position feedback, ambient temperature sensing, and wireless command reception. IC Role / Device Role / Timing Role: Embedded actuator controller managing stepper motor drive, 10-bit A/D for thermistor reading, D/A for analog setpoint output, and IrDA for field commissioning. Use Value: Dual A/D subsystems allow concurrent thermal monitoring and current feedback; 38 GPIOs support diverse sensor/actuator interfaces without external expanders. |
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, flash, and peripherals but in 100-pin LQFP (PLQP0100KB-A); adds 28 extra GPIOs, 3 more ∆Σ A/D channels, and full SCI/I²C/RSPI complement | Required when >38 GPIOs, >7 ∆Σ channels, or full 5-channel SCI/IrDA + 2×I²C + 2×RSPI are needed | Select R5F521A6BDFP if board layout accommodates larger footprint and higher peripheral density is required. |
| R5F521A7BDFM | Same 64-pin package but with 384 KB flash, 64 KB SRAM, and identical peripheral set; no change in ∆Σ A/D or crypto capabilities | Suitable where firmware size exceeds 256 KB or additional RAM is needed for complex protocol stacks or buffering | Choose R5F521A7BDFM when firmware growth or real-time data buffering demands larger memory without changing pinout or analog performance. |
Compared with R5F521A6BDFM#V0, R5F521A6BDFP offers expanded I/O and analog channel count in a larger package, while R5F521A7BDFM provides increased memory capacity within the same 64-pin footprint-both retain identical ∆Σ A/D accuracy, DEU functionality, and IEC60730 diagnostic coverage.
Availability
R5F521A6BDFM#V0 is available at Aetrix Electronics and suitable for industrial sensor hubs, energy metering front-ends, motor control interfaces, and smart HVAC actuators requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R5F521A6BDFM#V0 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.
The RX21A Group-including R5F521A6BDFM#V0-is designed for high-precision analog-intensive applications such as energy metering, industrial sensing, and motor control, emphasizing metrology-grade A/D performance, functional safety, and low-power operation.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A6BDFM#V0?
The R5F521A6BDFM#V0 operates at a maximum frequency of 50 MHz, delivering 78 DMIPS of processing performance. Its 32-bit RXv1 core features a 5-stage pipeline, variable-length instructions, and hardware multiplier/divider-enabling deterministic real-time execution for control loops and signal processing tasks within the R5F521A6BDFM#V0's 256 KB flash and 32 KB SRAM constraints.
Does the R5F521A6BDFM#V0 support IEC60730 functional safety compliance?
Yes, the R5F521A6BDFM#V0 includes dedicated hardware features for IEC60730 Class B compliance: self-diagnostic routines for the 24-bit ∆Σ A/D converter and 10-bit A/D, clock-frequency accuracy measurement (CAC), independent watchdog timer (IWDT), and RAM test assistance. These are documented in the RX21A Group User's Manual and supported by Renesas' safety libraries.
What analog peripherals are integrated into the R5F521A6BDFM#V0?
The R5F521A6BDFM#V0 integrates three analog subsystems: a 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB, PGA gain ×1–×64), a 10-bit A/D converter (7 channels, 2.0 μs conversion), and two 10-bit D/A converters. It also includes two 2-channel analog comparators (CMPA/CMPB), a temperature sensor with calibration registers, and dedicated analog supply pins (AVCCA/AVSSA, VREFH/VREFL).
How many communication interfaces does the R5F521A6BDFM#V0 support?
The R5F521A6BDFM#V0 supports up to nine communication channels: five SCI interfaces (including one IrDA-capable channel via SCI5), two I²C bus interfaces (RIIC), and two RSPI interfaces. In its 64-pin PLQP0064KB-A package, it retains full SCI1/5/6/8/9, RIIC0/1, and RSPIA/B functionality as confirmed in Table 1.2 of the datasheet.
What is the package type and pin count of the R5F521A6BDFM#V0?
The R5F521A6BDFM#V0 uses the PLQP0064KB-A package: a 64-pin LQFP measuring 10 mm × 10 mm with 0.5 mm pitch. This package provides 38 general-purpose I/O pins, supports all core peripherals of the RX21A Group, and is RoHS compliant-making it suitable for space-constrained industrial and metering applications where the R5F521A6BDFM#V0's analog precision and low-power modes are critical.
R5F521A6BDFM#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RX200
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- 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 3x24b, 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F521A6BDFM#V0 FAQ
1.How can I place an order for R5F521A6BDFM#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A6BDFM#V0 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 R5F521A6BDFM#V0 reliable?
The price and inventory of R5F521A6BDFM#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A6BDFM#V0 is usually 5 days.
3.What payment methods are accepted for R5F521A6BDFM#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A6BDFM#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A6BDFM#V0?
R5F521A6BDFM#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A6BDFM#V0 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 R5F521A6BDFM#V0?
For technical support, including R5F521A6BDFM#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A6BDFM#V0 requirements.
6.How does Aetrix verify that R5F521A6BDFM#V0 is sourced from the original manufacturer or authorized distributors?
All R5F521A6BDFM#V0 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 R5F521A6BDFM#V0 meets industry standards.
7.What is the process for return or replacement of R5F521A6BDFM#V0?
All R5F521A6BDFM#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A6BDFM#V0, 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 R5F521A6BDFM#V0 part is unused and in its original packaging.
Return procedure for R5F521A6BDFM#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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