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Renesas R5F521A7BDLJ#U0
- Part No.:
- R5F521A7BDLJ#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TFLGA
- Datasheet:
-
R5F521A7BDLJ#U0.pdf
- Description:
- IC MCU 32BIT 384KB FLSH 100TFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,612
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Product details
Overview
R5F521A7BDLJ#U0 from Renesas Electronics is a 32-bit RX CPU-based microcontroller with 384 KB on-chip flash, 64 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, hardware AES encryption (DEU), and real-time clock with deep software standby support. It targets precision industrial sensing and metering applications requiring high-resolution analog acquisition and secure firmware updates.
For engineers reviewing the R5F521A7BDLJ#U0 datasheet, R5F521A7BDLJ#U0 pinout, R5F521A7BDLJ#U0 application, or R5F521A7BDLJ#U0 equivalent, this page delivers verified specifications, package mapping to 100-pin TFLGA (PTLG0100JA-A), validated pin functions, and two confirmed alternative parts for functional migration in energy metering, motor control feedback, and IEC60730-compliant appliance designs.
Technical Context
The R5F521A7BDLJ#U0 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 subsystems include seven-channel 24-bit ∆Σ A/D with programmable gain amplifier (x1–x64 differential), seven-channel 10-bit A/D (2.0 μs conversion), dual 10-bit D/A outputs, and two 2-channel analog comparators. Communication interfaces comprise five SCIs (one supporting IrDA), two I²C buses, two RSPIs, and two RIICs - all coordinated via Event Link Controller (ELC) to trigger peripheral actions without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit, 50 MHz max, 78 DMIPS, 64-bit accumulator, MPU, 5-stage pipeline |
| Memory | 384 KB flash (no wait states @50 MHz), 64 KB SRAM, 8 KB data flash (100k rewrites) |
| ∆Σ A/D Converter | 24-bit resolution, 7 channels, SNDR = 85 dB, x1–x64 PGA gain, 81.92 μs min conversion |
| 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 range) |
| Crypto & Security | AES-128/192/256 encryption/decryption (ECB/CBC), CRC calculator with 3 polynomials |
| Operating Range | 1.8–3.6 V supply (2.7–3.6 V for ∆Σ A/D), −40°C to +85°C ambient temperature |
| Package | 100-pin TFLGA (PTLG0100JA-A), 7 × 7 mm, 0.65 mm pitch, lead-free |
Pinout & Package
Package: 100-pin TFLGA (PTLG0100JA-A), 7 × 7 mm body, 0.65 mm pitch, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCCA/AVSSA, VREFH/VREFL) with separate decoupling requirements |
| XTAL / EXTAL | Main clock input | Supports external crystal (up to 20 MHz) or clock source; enables precise timing for flash access and peripherals |
| XCIN / XCOUT | Sub-clock oscillator | Connects 32.768 kHz crystal for RTC and low-power timekeeping independent of main clock |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | ∆Σ A/D differential inputs | Four fully differential input pairs for high-precision current sensing with common-mode rejection |
| ANDS4–ANDS6 | ∆Σ A/D single-ended inputs | Three single-ended voltage inputs referenced to ANDSSG, usable with internal PGA (x1–x4) |
| DA0 / DA1 | D/A converter outputs | Two independent 10-bit voltage outputs (0 V to VREFH), suitable for sensor biasing or calibration references |
| SCI5_TXD / SCI5_RXD / IRTXD5 / IRRXD5 | IrDA interface | Dedicated SCI5 channel with integrated IrDA encoding/decoding per IrDA 1.0 spec |
| RTCOUT / RTCIC0–RTCIC2 | Real-time clock I/O | 1 Hz/64 Hz clock output and three event-capture inputs for timestamping external signals |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Safety Support | Hardware-assisted self-diagnostic for A/D, clock accuracy (CAC), IWDT, RAM test, and analog input disconnection detection |
| Event Link Controller (ELC) | Direct hardware triggering of 69 event sources (e.g., timer match, A/D completion) to peripherals without CPU interrupt latency |
| Multi-function Pin Controller (MPC) | Runtime reassignment of peripheral functions (SCI, I²C, RSPI, etc.) across multiple GPIO pins to simplify PCB layout |
| Deep Software Standby Mode | RTC remains active while CPU and most peripherals are powered down; wake-up via RTC alarm or external pin event |
| On-chip Debugging | FINE interface (FINED pin) supports full-speed debugging and flash programming via Renesas E1 emulator |
Applications
| Energy Metering | Industrial Motor Control |
|---|---|
Use Scenario: High-accuracy electricity meter with Class 0.2/0.5 compliance and tamper detection. IC Role / Device Role / Timing Role: Primary controller executing metrology algorithms, managing ∆Σ A/D sampling at 25 MHz, and performing AES-encrypted firmware updates. Use Value: 85 dB SNDR and x64 PGA enable direct shunt-based current measurement without external amplifiers, reducing BOM cost and board space. |
Use Scenario: Closed-loop PMSM/BLDC motor drive with torque ripple suppression and thermal monitoring. IC Role / Device Role / Timing Role: Real-time motion controller synchronizing MTU2 PWM outputs, sampling current via ∆Σ A/D, and regulating loop timing via RTC-triggered interrupts. Use Value: Simultaneous 7-channel ∆Σ A/D acquisition allows concurrent phase current and DC bus voltage sampling at fixed intervals, eliminating inter-channel skew. |
| Smart Appliance Control | Medical Sensor Hub |
Use Scenario: IEC60730-compliant washing machine control board with load sensing and water heating management. IC Role / Device Role / Timing Role: Safety-certified MCU running diagnostics, driving TRIACs via MTU2 complementary PWM, and logging fault events to data flash. Use Value: Integrated safety features (IWDT, CAC, RAM test) reduce external certification effort and eliminate need for discrete watchdog ICs. |
Use Scenario: Portable patient monitor aggregating ECG, temperature, and SpO₂ signals with local encryption before cloud upload. IC Role / Device Role / Timing Role: Signal acquisition hub using 24-bit ∆Σ A/D for ECG front-end, 10-bit A/D for thermistor, and DEU for HIPAA-compliant data encryption. Use Value: On-chip AES-256 and 100k-cycle data flash allow secure, long-life storage of calibration coefficients and encrypted patient records without external secure elements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A7BDFP | Same core, memory, and peripherals; LQFP-100 (PLQP0100KB-A), 0.5 mm pitch, larger footprint (14 × 14 mm) | Preferred where manual soldering, thermal relief, or mechanical robustness outweigh size constraints | Select for prototyping, industrial panels, or legacy PCB compatibility where TFLGA rework is impractical |
| R5F521A8BDLJ#U0 | 512 KB flash / 64 KB SRAM vs. 384 KB / 64 KB; identical package, peripherals, and temperature grade | Suitable when firmware growth exceeds 384 KB or future-proofing for feature expansion is required | Choose when bootloader, OTA stack, or safety libraries demand >384 KB code space without changing layout or thermal design |
Compared with R5F521A7BDLJ#U0, R5F521A7BDFP offers easier assembly but requires more PCB area, while R5F521A8BDLJ#U0 provides 128 KB additional flash for complex firmware-both retain identical analog performance, crypto capability, and IEC60730 diagnostic coverage.
Availability
R5F521A7BDLJ#U0 is available at Aetrix Electronics and suitable for energy metering, industrial motor control, smart appliance development, and medical sensor hub designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F521A7BDLJ#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The RX21A Group, including R5F521A7BDLJ#U0, was designed specifically for high-precision analog-intensive applications such as smart meters, motor drives, and safety-critical appliances-emphasizing metrology-grade ADCs, hardware security, and IEC60730 compliance.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A7BDLJ#U0?
The R5F521A7BDLJ#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 multiplication, and memory protection unit-enabling deterministic real-time execution for metrology and motor control algorithms within the R5F521A7BDLJ#U0's architecture.
Does the R5F521A7BDLJ#U0 support IEC60730 functional safety compliance?
Yes, the R5F521A7BDLJ#U0 includes hardware-assisted safety features required for Class B compliance: self-diagnostic routines for the 24-bit ∆Σ A/D converter, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM testing support, and analog input disconnection detection-all documented in the RX21A Group User's Manual and leveraged in certified appliance designs using the R5F521A7BDLJ#U0.
What analog peripherals are integrated into the R5F521A7BDLJ#U0?
The R5F521A7BDLJ#U0 integrates a 24-bit ∆Σ A/D converter (7 channels, SNDR = 85 dB, x1–x64 PGA), a 10-bit A/D converter (7 channels, 2.0 μs conversion), two 10-bit D/A converters, two 2-channel analog comparators (CMPA/CMPB), and an on-die temperature sensor. These are electrically isolated with dedicated analog supplies (AVCCA/AVSSA, VREFH/VREFL) and calibrated for production use in the R5F521A7BDLJ#U0.
Which communication interfaces does the R5F521A7BDLJ#U0 provide?
The R5F521A7BDLJ#U0 provides five Serial Communications Interfaces (SCI), two I²C buses (RIIC), two Serial Peripheral Interfaces (RSPI), and one IrDA interface (co-located with SCI5). All support event-driven operation via the Event Link Controller (ELC), enabling autonomous peripheral interaction-critical for low-latency sensor aggregation and communication in the R5F521A7BDLJ#U0's target applications.
What is the package type and pin count of the R5F521A7BDLJ#U0?
The R5F521A7BDLJ#U0 uses a 100-pin TFLGA package (PTLG0100JA-A) with 7 × 7 mm body size and 0.65 mm pitch. This fine-pitch land-grid array supports high-density PCB layouts and thermal performance suitable for sealed industrial enclosures-distinct from the LQFP variants in the RX21A family and confirmed for the R5F521A7BDLJ#U0 in Renesas datasheet R01DS0129EJ0110.
R5F521A7BDLJ#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:
- 384KB (384K 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:
R5F521A7BDLJ#U0 FAQ
1.How can I place an order for R5F521A7BDLJ#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A7BDLJ#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 R5F521A7BDLJ#U0 reliable?
The price and inventory of R5F521A7BDLJ#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A7BDLJ#U0 is usually 5 days.
3.What payment methods are accepted for R5F521A7BDLJ#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A7BDLJ#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A7BDLJ#U0?
R5F521A7BDLJ#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A7BDLJ#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 R5F521A7BDLJ#U0?
For technical support, including R5F521A7BDLJ#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A7BDLJ#U0 requirements.
6.How does Aetrix verify that R5F521A7BDLJ#U0 is sourced from the original manufacturer or authorized distributors?
All R5F521A7BDLJ#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 R5F521A7BDLJ#U0 meets industry standards.
7.What is the process for return or replacement of R5F521A7BDLJ#U0?
All R5F521A7BDLJ#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A7BDLJ#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 R5F521A7BDLJ#U0 part is unused and in its original packaging.
Return procedure for R5F521A7BDLJ#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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