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Renesas R5F521A6BDLJ#U0
- Part No.:
- R5F521A6BDLJ#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TFLGA
- Datasheet:
-
R5F521A6BDLJ#U0.pdf
- Description:
- IC MCU 32BIT 256KB FLSH 100TFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,446
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Product details
Overview
R5F521A6BDLJ#U0 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). It integrates a 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB), dual 10-bit D/A converters, real-time clock with deep software standby wake-up, and AES-128/192/256 encryption (DEU) - designed for high-precision industrial sensing and secure embedded control in metering and motor drive applications.
For engineers reviewing the R5F521A6BDLJ#U0 datasheet, R5F521A6BDLJ#U0 pinout, R5F521A6BDLJ#U0 application, or R5F521A6BDLJ#U0 equivalent, this page delivers verified specifications, package mapping to 100-pin TFLGA (PTLG0100JA-A), validated pin functions, and two confirmed alternative parts aligned to the RX21A Group's 256 KB/32 KB configuration and −40°C to +85°C temperature grade.
Technical Context
The R5F521A6BDLJ#U0 implements a CISC Harvard architecture with 5-stage pipeline, 64-bit accumulator for single-cycle 32×32-bit multiply-accumulate, and memory protection unit (MPU). Its clock system includes PLL (4–12.5 MHz input), sub-clock oscillator (32.768 kHz), and dedicated IWDT oscillator (125 kHz), enabling independent RTC operation during deep software standby.
Peripheral integration centers on event-driven operation: ELC supports 69 event sources to trigger MTU2, RSPI, or ADC without CPU intervention; MPC enables flexible I/O pin assignment; and DSAD provides differential PGA gain up to ×64 with calibrated impedance and gain registers per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard, 50 MHz max, 78 DMIPS - enables deterministic real-time control with ultra-compact code density. |
| Memory | 256 KB flash (no wait states at 50 MHz), 32 KB SRAM, 8 KB data flash (100k erase/write cycles) - supports field firmware updates and parameter storage without CPU load. |
| ∆Σ A/D Converter | 24-bit, 7-channel (4 diff + 3 SE), SNDR = 85 dB, PGA gain ×1–×64 - delivers high-resolution current/voltage measurement for energy metering and sensor signal conditioning. |
| Additional Analog | 10-bit A/D (7 ch, 2.0 μs conversion), 10-bit D/A (2 ch), 2× analog comparators, integrated temperature sensor - enables mixed-signal closed-loop control with self-diagnostic capability. |
| Security & Timing | AES-128/192/256 (ECB/CBC), RTC with leap-year correction and event-triggered time capture, CAC clock accuracy measurement - meets IEC60730 Class B requirements for functional safety. |
| Package & Temp | 100-pin TFLGA (PTLG0100JA-A), 7×7 mm, 0.65 mm pitch; operating range −40°C to +85°C - compact footprint suitable for space-constrained industrial modules. |
Pinout & Package
Package: 100-pin TFLGA (PTLG0100JA-A), 7×7 mm body, 0.65 mm pitch, exposed thermal pad - optimized for thermal performance in sealed industrial enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCCA/AVSSA, VREFH/VREFL) - require separate decoupling for noise-sensitive ∆Σ A/D operation. |
| XTAL / EXTAL | Main clock input | Supports crystal (1–20 MHz) or external clock source - enables precise timing for communication interfaces and PWM generation. |
| XCIN / XCOUT | Sub-clock oscillator | 32.768 kHz crystal interface for RTC - maintains calendar/timekeeping during deep software standby mode. |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ A/D differential inputs | Four fully differential input pairs with programmable PGA - directly interfaces shunt resistors for high-accuracy current sensing. |
| DA0 / DA1 | 10-bit D/A outputs | Independent voltage outputs (0 V to VREFH) - usable for analog setpoint generation or calibration reference signals. |
| MTIOC0A–MTIOC5D | MTU2 waveform I/O | 16 PWM/complementary output lines across six 16-bit timers - supports three-phase motor control with dead-time insertion via POE2. |
| SCI5 TX/RX (TXD5/RXD5) + IRTXD5/IRRXD5 | IrDA-capable SCI channel | Full IrDA 1.0 encoding/decoding on SCI5 - enables contactless configuration and diagnostics in utility meters. |
| RES# | Active-low reset input | Asynchronous hardware reset with internal pull-up - ensures reliable initialization under brown-out or ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | 69 configurable event sources directly trigger peripherals (e.g., MTU2 start on ADC end-of-conversion), eliminating interrupt latency and CPU overhead. |
| Calibrated ∆Σ A/D | Factory-trimmed DSADIIC and DSADGmXn registers enable per-channel input impedance and gain compensation - critical for <0.1% measurement accuracy in metering. |
| Deep Software Standby Mode | RTC remains active while CPU and most peripherals halt; wake-up via RTC alarm, external pin, or time-capture event - extends battery life in portable monitoring devices. |
| IEC60730 Support Functions | Integrated self-test for A/D converter, clock accuracy (CAC), IWDT, RAM, and analog input disconnection detection - reduces external diagnostic circuitry for Class B compliance. |
| Multiplexed Pin Control (MPC) | Per-pin function selection across multiple peripheral modules (e.g., SCI, I²C, RSPI on shared pins) - simplifies PCB layout and enables flexible board reuse across product variants. |
Applications
| Energy Metering | Industrial Motor Control |
|---|---|
|
Use Scenario: Residential and commercial electricity meters requiring metrology-grade current/voltage sampling and tamper detection. IC Role / Device Role / Timing Role: Primary metrology MCU performing simultaneous 7-channel ∆Σ A/D acquisition, real-time energy 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 while meeting IEC62053-21 Class 0.5S accuracy. |
Use Scenario: Brushless DC (BLDC) motor drives for HVAC blowers and pumps with closed-loop speed/torque control. IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithms using MTU2 complementary PWM, 10-bit A/D for current sensing, and ELC-synchronized ADC triggering. Use Value: Sub-microsecond PWM dead-time control and deterministic 50 MHz execution ensure stable commutation at 30,000 RPM without jitter-induced torque ripple. |
| Smart Grid Sensors | Secure Industrial IoT Nodes |
|
Use Scenario: DIN-rail mounted power quality analyzers capturing harmonics, transients, and THD with timestamped waveform logging. IC Role / Device Role / Timing Role: High-precision data acquisition node using 24-bit ∆Σ A/D with 32.768 kHz RTC time-stamping and RSPI-to-SD card storage. Use Value: Simultaneous 7-channel sampling at 81.92 μs resolution enables full-cycle 50/60 Hz waveform capture with ±1 ppm time accuracy for PQDIF compliance. |
Use Scenario: Edge nodes in factory automation collecting sensor data and transmitting encrypted telemetry over RS485 or LoRaWAN gateways. IC Role / Device Role / Timing Role: Secure edge processor running lightweight TLS stack with hardware-accelerated AES and unique ID-based device authentication. Use Value: On-chip DEU reduces encryption latency by >90% vs. software-only AES, enabling real-time payload encryption without compromising 100 kSPS sensor throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A6BDFP | Same RX21A core, 256 KB flash/32 KB RAM, but in 100-pin LQFP (PLQP0100KB-A); lacks TFLGA thermal performance and higher I/O drive strength. | Suitable for cost-sensitive industrial panels where PCB space allows larger LQFP; not recommended for thermally constrained metering modules. | Select R5F521A6BDFP only when LQFP assembly infrastructure exists and thermal derating below 85°C is acceptable. |
| R5F521A7BDLJ | Same TFLGA package and −40°C to +85°C rating, but with 384 KB flash/64 KB RAM - no change to ∆Σ A/D, DEU, or ELC capabilities. | Preferred for applications requiring larger firmware (e.g., multi-protocol stacks) or extended data logging buffers without changing hardware layout. | Choose R5F521A7BDLJ if future firmware expansion or dual-application partitioning (e.g., bootloader + app) is anticipated. |
Compared with R5F521A6BDLJ#U0, R5F521A6BDFP offers identical functionality in a less dense package but sacrifices thermal efficiency and board area; R5F521A7BDLJ retains full pin compatibility and peripheral feature set while doubling memory resources - making it the optimal upgrade path for scalable designs.
Availability
R5F521A6BDLJ#U0 is available at Aetrix Electronics and suitable for energy metering, industrial motor control, smart grid sensors, and secure industrial IoT nodes requiring stable component supply across long-life production cycles.
Supply support for R5F521A6BDLJ#U0 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 R5F521A6BDLJ#U0 - was engineered for high-accuracy industrial sensing and secure control, integrating metrology-grade ∆Σ A/D, hardware crypto, and low-power RTC to address metering, motor drive, and grid-edge applications.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A6BDLJ#U0?
The R5F521A6BDLJ#U0 operates at a maximum frequency of 50 MHz, delivering 78 DMIPS of processing performance. Its RX CPU core features a 5-stage pipeline, 64-bit accumulator for single-cycle 32×32-bit MAC operations, and variable-length instructions - enabling efficient execution of real-time control algorithms and signal processing tasks without performance bottlenecks.
Does the R5F521A6BDLJ#U0 support hardware-accelerated cryptography?
Yes, the R5F521A6BDLJ#U0 includes a dedicated Data Encryption Unit (DEU) supporting AES-128, AES-192, and AES-256 encryption/decryption in ECB and CBC modes. This hardware acceleration offloads cryptographic operations from the CPU, enabling secure firmware updates, encrypted sensor data transmission, and device authentication without compromising real-time responsiveness.
What analog peripherals are integrated into the R5F521A6BDLJ#U0?
The R5F521A6BDLJ#U0 integrates a 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB), a 10-bit A/D converter (7 channels, 2.0 μs conversion), two 10-bit D/A converters, two analog comparators (CMPA/B), and an on-die temperature sensor. All analog blocks include self-diagnostic and disconnection-detection support for IEC60730 compliance.
How does the R5F521A6BDLJ#U0 manage low-power operation in battery-powered applications?
The R5F521A6BDLJ#U0 supports four low-power modes, including deep software standby where the RTC remains active while the CPU and most peripherals are halted. Wake-up can occur via RTC alarm, external pin interrupt, or time-capture event - enabling multi-year battery life in portable monitoring and smart meter applications without sacrificing timekeeping accuracy.
Is the R5F521A6BDLJ#U0 pin-compatible with other RX21A Group members?
Yes, the R5F521A6BDLJ#U0 shares identical pinout and electrical characteristics with other 100-pin TFLGA variants in the RX21A Group, including R5F521A7BDLJ and R5F521A8BDLJ. This enables direct hardware scalability - for example, upgrading flash/RAM capacity without PCB redesign - while preserving all peripheral routing and thermal interface design.
R5F521A6BDLJ#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-TFLGA
- 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:
- 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 7x24b, 7x10b; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F521A6BDLJ#U0 FAQ
1.How can I place an order for R5F521A6BDLJ#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A6BDLJ#U0 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 R5F521A6BDLJ#U0 reliable?
The price and inventory of R5F521A6BDLJ#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A6BDLJ#U0 is usually 5 days.
3.What payment methods are accepted for R5F521A6BDLJ#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A6BDLJ#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A6BDLJ#U0?
R5F521A6BDLJ#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A6BDLJ#U0 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 R5F521A6BDLJ#U0?
For technical support, including R5F521A6BDLJ#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A6BDLJ#U0 requirements.
6.How does Aetrix verify that R5F521A6BDLJ#U0 is sourced from the original manufacturer or authorized distributors?
All R5F521A6BDLJ#U0 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 R5F521A6BDLJ#U0 meets industry standards.
7.What is the process for return or replacement of R5F521A6BDLJ#U0?
All R5F521A6BDLJ#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A6BDLJ#U0, 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 R5F521A6BDLJ#U0 part is unused and in its original packaging.
Return procedure for R5F521A6BDLJ#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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