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Renesas R5F521A6BDFP#30
- Part No.:
- R5F521A6BDFP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F521A6BDFP#30.pdf
- Description:
- IC MCU 32BIT 256KB FLSH 100LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,830
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Product details
Overview
R5F521A6BDFP 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 software standby wake-up, and nine communication interfaces including SCI (5 ch), I²C (2 ch), RSPI (2 ch), and IrDA (via SCI5). It targets precision analog sensing in industrial metering and energy monitoring systems.
For engineers reviewing the R5F521A6BDFP datasheet, R5F521A6BDFP pinout, R5F521A6BDFP application, or R5F521A6BDFP equivalent, this page delivers verified specifications, validated package mapping (PLQP0100KB-A, 100-pin LQFP), confirmed pin functions per Renesas R01DS0129EJ0110 Rev.1.10, and two rigorously cross-checked alternative parts for industrial-grade mixed-signal MCU selection.
Technical Context
The R5F521A6BDFP implements a CISC Harvard-architecture RX CPU core with 5-stage pipeline, 64-bit accumulator for 32×32-bit operations, 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.
Analog subsystem integration includes simultaneous 7-channel 24-bit ∆Σ A/D with programmable gain amplifier (x1–x64 differential), 10-bit A/D with self-diagnostic capability, dual 10-bit D/A, and two 2-channel analog comparators - all supported by dedicated analog supplies (AVCCA/AVSSA, AVCC0/AVSS0) and reference pins (VREFDSH/VREFDSL, VREFH0/VREFL0).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit, 50 MHz max, 78 DMIPS, 5-stage pipeline, 64-bit accumulator |
| Memory | 256 KB flash (no wait states @ 50 MHz), 32 KB SRAM, 8 KB data flash (100k rewrites) |
| ∆Σ A/D Converter | 24-bit, 7 channels, SNDR = 85 dB, x1–x64 PGA for differential inputs |
| 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 & Timing | AES-128/192/256 (ECB/CBC), RTC with event-triggered wake-up from deep standby |
| Communication | 5× SCI (1 with IrDA), 2× I²C (400 kbps), 2× RSPI, ELC-driven peripheral triggering |
| Package & Temp | PLQP0100KB-A (100-pin LQFP, 14×14 mm, 0.5 mm pitch), −40°C to +85°C |
Pinout & Package
Package: PLQP0100KB-A - 100-pin LQFP, 14 mm × 14 mm body, 0.5 mm pitch, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCCA/AVSSA, AVCC0/AVSS0) with separate decoupling requirements |
| XTAL / EXTAL | Main clock input | Supports crystal (1–20 MHz) or external clock source for system timing generation |
| XCIN / XCOUT | Sub-clock oscillator | Connects 32.768 kHz crystal for RTC and low-power timing independence |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ A/D differential inputs | Four fully differential input pairs supporting high-precision current sensing with programmable gain |
| ANDS4–ANDS6 | ∆Σ A/D single-ended inputs | Three voltage-input channels referenced to ANDSSG, optimized for sensor voltage monitoring |
| AN0–AN6 | 10-bit A/D inputs | Seven general-purpose analog inputs compatible with internal temperature sensor and disconnection detection |
| DA0 / DA1 | D/A analog outputs | Two buffered 10-bit voltage outputs (0 V to VREFH) usable for calibration or actuator control |
| MTIOC0A–MTIOC5D | PWM / capture I/O | Six 16-bit MTU channels provide complementary PWM, phase counting, and trigger generation for A/D conversion |
| SCI5 TX/RX (TXD5/RXD5) + IRTXD5/IRRXD5 | IrDA interface | Dedicated IrDA encoding/decoding via SCI5 with hardware-level waveform compliance to IrDA 1.0 |
| RES# | Active-low reset | Asynchronous reset input with built-in debouncing and compatibility with external reset supervisors |
Key Features
| Feature | Design Value |
|---|---|
| ELC (Event Link Controller) | Direct hardware triggering of 69 peripheral events without CPU intervention - enables ultra-low-latency response and CPU sleep during background operation |
| MPC (Multi-function Pin Controller) | Runtime remapping of peripheral functions (e.g., SCI, I²C, RSPI) to multiple GPIO ports - simplifies PCB layout and supports design reuse across variants |
| Deep Software Standby Mode | RTC remains active while CPU, flash, and most peripherals are powered down - achieves <10 µA typical current draw with wake-up on external pin or RTC alarm |
| IEC60730 Safety Support | Hardware-assisted self-test for A/D converter, clock accuracy (CAC), IWDT, RAM, and analog input disconnection - reduces firmware certification effort for Class B applications |
| DEU (Data Encryption Unit) | Dedicated AES engine supporting 128/192/256-bit keys in ECB/CBC modes - offloads encryption from CPU, enabling secure firmware updates and data logging |
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 signal-processing MCU handling simultaneous 7-channel ∆Σ A/D sampling, real-time FFT, secure data logging, and DLMS/COSEM protocol stack. Use Value: 85 dB SNDR and x64 PGA enable direct shunt-based current sensing without external amplifiers, reducing BOM cost and board area. |
Use Scenario: Battery-powered grid-edge sensor aggregating voltage, current, and temperature data for predictive maintenance in distribution transformers. IC Role / Device Role / Timing Role: Low-power host MCU managing scheduled wake-up via RTC, analog acquisition, AES-encrypted transmission over RSPI/I²C to LoRaWAN gateway. Use Value: Deep software standby mode with RTC-initiated wake-up extends battery life to >5 years on coin-cell power. |
| Programmable Logic Controller I/O Module | Medical Diagnostic Instrument Front-End |
Use Scenario: Modular PLC base unit acquiring analog process signals (4–20 mA, 0–10 V), executing PID control, and communicating via Modbus RTU over SCI. IC Role / Device Role / Timing Role: Real-time deterministic controller with MTU2 PWM outputs for valve actuation, 10-bit A/D for fast diagnostics, and ELC-triggered ADC sampling synchronized to control loop. Use Value: Hardware ELC eliminates interrupt latency jitter, ensuring sub-microsecond timing consistency for closed-loop control cycles. |
Use Scenario: Portable blood glucose or ECG analyzer requiring calibrated analog front-end, patient data encryption, and USB/Bluetooth connectivity. IC Role / Device Role / Timing Role: Mixed-signal SoC performing analog signal conditioning, 24-bit ∆Σ A/D conversion of biosignals, AES-128 encryption of health records, and SCI-to-USB bridge via external transceiver. Use Value: Integrated DEU and hardware CRC calculator meet HIPAA-compliant secure storage requirements without external crypto ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A7BDFP | 384 KB flash, 64 KB SRAM, same package/peripherals, identical temp range (−40°C to +85°C) | Higher code density headroom for complex protocol stacks or larger GUI frameworks | Select when firmware size exceeds 256 KB or additional SRAM is required for real-time buffering |
| R5F521A6BDLJ | Same memory config (256 KB/32 KB), 100-pin TFLGA (7×7 mm, 0.65 mm pitch), identical feature set | Space-constrained designs requiring smaller footprint and higher I/O density | Select for compact portable devices where LQFP thermal/mechanical robustness is less critical than board area |
Compared with R5F521A6BDFP, R5F521A7BDFP offers expanded memory for feature-rich firmware, while R5F521A6BDLJ delivers identical functionality in a miniature TFLGA package - enabling trade-offs between layout flexibility, thermal performance, and production testability.
Availability
R5F521A6BDFP is available at Aetrix Electronics and suitable for industrial energy metering, smart grid sensor nodes, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for R5F521A6BDFP 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 applications.
The RX21A Group - including R5F521A6BDFP - was designed for high-precision analog-intensive applications such as energy measurement, motor control, and sensor fusion, combining ultra-low-noise ∆Σ A/D with real-time CPU performance and functional safety features.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A6BDFP?
The R5F521A6BDFP 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 operations, and memory protection unit - enabling deterministic real-time execution for industrial control loops. This performance level is sustained across its full −40°C to +85°C operating range.
Does the R5F521A6BDFP support hardware-accelerated cryptography?
Yes, the R5F521A6BDFP includes a dedicated Data Encryption Unit (DEU) supporting AES encryption and decryption with 128-, 192-, or 256-bit keys in ECB and CBC modes. The DEU operates independently of the CPU, allowing secure firmware updates, encrypted data logging, and HIPAA-compliant health data handling without performance penalty on the main application thread.
How many analog-to-digital converter channels does the R5F521A6BDFP integrate, and what are their key characteristics?
The R5F521A6BDFP integrates two independent A/D converters: a 24-bit ∆Σ type with 7 channels (4 differential + 3 single-ended) achieving 85 dB SNDR and programmable gain up to x64, plus a 10-bit SAR-type with 7 channels and 2.0 μs conversion time. Both include self-diagnostic and analog input disconnection detection - critical for IEC60730-certified industrial equipment.
What low-power modes are available on the R5F521A6BDFP, and which peripherals remain active in deep software standby?
The R5F521A6BDFP offers four low-power modes, including deep software standby where CPU, flash, and most peripherals are halted. In this mode, the RTC remains fully operational using the 32.768 kHz sub-clock, and wake-up can be triggered by RTC alarm, external pin event (RTCIC0–RTCIC2), or real-time clock overflow - enabling ultra-low quiescent current (<10 µA) for battery-powered remote sensors.
Is the R5F521A6BDFP pin-compatible with other members of the RX21A Group?
The R5F521A6BDFP in PLQP0100KB-A package shares identical pinout and electrical characteristics with other 100-pin RX21A variants (e.g., R5F521A7BDFP, R5F521A8BDFP), enabling hardware reuse across memory configurations. However, it is not pin-compatible with 80-pin (PLQP0080KB-A), 64-pin (PLQP0064KB-A), or 100-pin TFLGA (PTLG0100JA-A) variants due to differing pin counts and physical layouts.
R5F521A6BDFP#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:
- 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:
R5F521A6BDFP#30 FAQ
1.How can I place an order for R5F521A6BDFP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A6BDFP#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 R5F521A6BDFP#30 reliable?
The price and inventory of R5F521A6BDFP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A6BDFP#30 is usually 5 days.
3.What payment methods are accepted for R5F521A6BDFP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A6BDFP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A6BDFP#30?
R5F521A6BDFP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A6BDFP#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 R5F521A6BDFP#30?
For technical support, including R5F521A6BDFP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A6BDFP#30 requirements.
6.How does Aetrix verify that R5F521A6BDFP#30 is sourced from the original manufacturer or authorized distributors?
All R5F521A6BDFP#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 R5F521A6BDFP#30 meets industry standards.
7.What is the process for return or replacement of R5F521A6BDFP#30?
All R5F521A6BDFP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A6BDFP#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 R5F521A6BDFP#30 part is unused and in its original packaging.
Return procedure for R5F521A6BDFP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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