My Inquiry
My Account
Renesas R5F521A8BDLJ#U0
- Part No.:
- R5F521A8BDLJ#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TFLGA
- Datasheet:
-
R5F521A8BDLJ#U0.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 100TFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,228
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F521A8BDLJ#U0 from Renesas Electronics is a 50-MHz, 32-bit RX CPU-based microcontroller featuring integrated 24-bit ∆Σ A/D converter (7-channel, SNDR = 85 dB), 10-bit A/D and D/A converters, AES encryption (DEU), RTC with deep software standby wake-up, and IrDA support via SCI5. It targets high-precision sensor signal conditioning in industrial metering and energy monitoring systems.
For engineers reviewing the R5F521A8BDLJ#U0 datasheet, R5F521A8BDLJ#U0 pinout, R5F521A8BDLJ#U0 application, or R5F521A8BDLJ#U0 equivalent, key selection criteria include its TFLGA-100 package (7 × 7 mm, 0.65-mm pitch), −40°C to +85°C operating range, 512-KB flash/64-KB SRAM/8-KB data flash memory configuration, and dual A/D architecture supporting simultaneous high-resolution current/voltage measurement.
Technical Context
The R5F521A8BDLJ#U0 implements a CISC Harvard architecture with 5-stage pipeline, 78 DMIPS at 50 MHz, and on-chip memory protection unit (MPU). Its ∆Σ A/D converter supports differential input with programmable gain up to ×64 and single-ended input with gain up to ×4, enabling direct connection to shunt resistors and voltage dividers without external amplification.
Real-time operation is enhanced by the Event Link Controller (ELC), which allows timer-triggered A/D conversion and peripheral activation without CPU intervention, and the Data Transfer Controller (DTC), supporting chain transfers for continuous sensor data acquisition with minimal CPU load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit, 50 MHz max, 78 DMIPS - enables real-time control loop execution within sub-10 μs latency. |
| Flash / SRAM / Data Flash | 512 KB / 64 KB / 8 KB - supports complex firmware with secure boot, field updates, and parameter storage. |
| 24-bit ∆Σ A/D | 7 channels, SNDR = 85 dB, PGA gain ×1–×64 - delivers 19-bit effective resolution for precision current sensing. |
| 10-bit A/D & D/A | 7-channel ADC (2.0 μs conversion), 2-channel DAC - provides fast auxiliary analog I/O for calibration and feedback control. |
| Security & Timing | AES-128/192/256 (ECB/CBC), RTC with event-triggered wake-up from deep software standby - meets IEC60730 Class B requirements. |
| Package & Temp | TFLGA-100 (7 × 7 mm, 0.65-mm pitch), −40°C to +85°C - enables compact, thermally robust PCB layout in space-constrained industrial enclosures. |
| Supply Voltage | 1.8 V to 3.6 V (50 MHz operation requires ≥2.7 V) - allows direct interface with Li-ion battery-backed or low-voltage industrial rails. |
Pinout & Package
Package: PTLG0100JA-A - 100-pin TFLGA, 7 × 7 mm body, 0.65-mm pitch, bottom-side solder balls. Designed for high-density, low-profile applications requiring thermal efficiency and EMI resilience.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital core (VCC) and analog sections (AVCCA, AVCC0, VREFH/L) require separate decoupling per datasheet layout guidelines. |
| ANDS0P–ANDS3P / ANDS0N–ANDS3N | Differential inputs for ∆Σ A/D | Supports 4-channel current sensing with internal PGA; pins must be routed as matched-length differential pairs for optimal CMRR. |
| ANDS4–ANDS6 / ANDSSG | Single-ended inputs for ∆Σ A/D | 3-channel voltage sensing with common-mode reference; ANDSSG connects to analog ground plane to minimize offset drift. |
| DA0 / DA1 | Analog output | 10-bit buffered outputs referenced to VREFH/VREFL; used for programmable bias generation or actuator control signals. |
| RTCIC0–RTCIC2 | RTC time-capture inputs | Edge-triggered event capture pins enable precise timestamping of external pulses (e.g., utility meter pulses) without software overhead. |
| IRTXD5 / IRRXD5 | IrDA physical layer interface | Dedicated SCI5 pins configured for 115.2 kbps IrDA 1.0 encoding/decoding; require external IR LED/detector circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| ∆Σ A/D self-calibration | On-chip gain and input impedance calibration registers (DSADGmXn, DSADIIC) eliminate need for external trim components in production test. |
| ELC-triggered peripheral operation | 69 event sources directly link timers, A/D, and communication modules - enables ultra-low-power sensor polling during CPU sleep. |
| IEC60730 safety assist | Hardware-accelerated RAM test, A/D disconnection detection, clock accuracy check (CAC), and IWDT - reduces certified firmware development effort. |
| MPC pin remapping | Multiple peripheral functions assignable to alternative pins (e.g., SCI, I²C, RSPI) - simplifies PCB layout and avoids routing congestion. |
| Deep software standby with RTC | Sub-10 μA current draw while maintaining RTC timekeeping and wake-up capability on external event - extends battery life in portable meters. |
Applications
| Energy Metering | Industrial Current Monitoring |
|---|---|
Use Scenario: Residential and commercial electricity meters measuring active/reactive power with anti-tampering features. IC Role / Device Role / Timing Role: Primary signal processor executing metrology algorithms, managing pulse output, and enforcing security policies via DEU and RTC. Use Value: 24-bit ∆Σ A/D achieves Class 0.2 accuracy per IEC62053-21; AES encryption protects firmware and tariff data against unauthorized access. |
Use Scenario: DIN-rail mounted current transducers for motor control panels and switchgear monitoring. IC Role / Device Role / Timing Role: High-precision analog front-end controller acquiring shunt-based current waveforms and generating isolated analog outputs. Use Value: Simultaneous 7-channel ∆Σ sampling captures full 3-phase current + neutral + auxiliary voltages; PGA eliminates external op-amp stages. |
| Smart Grid Sensor Nodes | Portable Power Quality Analyzers |
Use Scenario: Wireless distribution transformer monitors measuring harmonics, THD, and voltage sags/swells. IC Role / Device Role / Timing Role: Real-time DSP engine performing FFT analysis on sampled waveforms and transmitting results via RSPI/I²C to wireless MCU. Use Value: 78 DMIPS CPU and DTC-assisted DMA transfer sustain 16-kSPS waveform capture with <5% CPU utilization. |
Use Scenario: Handheld instruments capturing transient events (e.g., inrush currents, voltage dips) with millisecond timestamping. IC Role / Device Role / Timing Role: Time-critical acquisition controller using RTCICx pins to latch exact event onset and trigger high-speed A/D burst mode. Use Value: Hardware RTC event capture ensures ±1 ms timestamp accuracy independent of software interrupt latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F521A8BDFP | LQFP-100 (14 × 14 mm, 0.5-mm pitch); identical core/peripherals but larger footprint and higher thermal resistance. | Better suited for prototyping and manual assembly; less suitable for space-constrained meter PCBs. | Select R5F521A8BDFP when board area permits and reflow compatibility with standard LQFP processes is required. |
| R5F521A7BDLJ | Same TFLGA-100 package but 384-KB flash/64-KB SRAM; reduced code capacity limits complex communication stacks or OTA update partitions. | Appropriate for cost-sensitive designs where firmware size remains under 350 KB and no dual-bank flash update is needed. | Choose R5F521A7BDLJ when application firmware fits within 384 KB and full 512 KB is unnecessary for future feature expansion. |
Compared with R5F521A8BDFP and R5F521A7BDLJ, the R5F521A8BDLJ#U0 uniquely combines the smallest industrial-grade package (TFLGA-100) with maximum memory (512 KB flash) and full ∆Σ A/D channel count (7), making it optimal for miniaturized, high-accuracy metering designs requiring long-term firmware maintainability.
Availability
R5F521A8BDLJ#U0 is available at Aetrix Electronics and suitable for energy metering, industrial current monitoring, and smart grid sensor node applications requiring stable component supply across multi-year production cycles.
Supply support for R5F521A8BDLJ#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 industrial, automotive, and IoT markets.
The RX21A Group, including R5F521A8BDLJ#U0, was designed specifically for high-accuracy analog-intensive applications such as electricity meters, industrial sensors, and portable test equipment requiring integrated ∆Σ A/D, security, and low-power RTC functionality.
FAQ
What is the maximum operating frequency and CPU performance of the R5F521A8BDLJ#U0?
The R5F521A8BDLJ#U0 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance. This is achieved through its 32-bit RX CPU core with 5-stage pipeline, variable-length instructions, and hardware multiplier/divider - enabling deterministic execution of metrology algorithms and real-time control loops within strict timing budgets.
Does the R5F521A8BDLJ#U0 support hardware-accelerated AES encryption?
Yes, the R5F521A8BDLJ#U0 integrates a dedicated Data Encryption Unit (DEU) supporting AES-128, AES-192, and AES-256 in ECB and CBC modes. This hardware accelerator offloads encryption/decryption tasks from the CPU, ensuring secure firmware updates and protected communication without degrading real-time performance.
How many channels does the 24-bit ∆Σ A/D converter support on the R5F521A8BDLJ#U0?
The R5F521A8BDLJ#U0 supports seven channels of 24-bit ∆Σ A/D conversion: four differential inputs (ANDS0P/N to ANDS3P/N) optimized for current sensing with programmable gain up to ×64, and three single-ended inputs (ANDS4 to ANDS6) for voltage measurement with gain up to ×4.
What package type and dimensions does the R5F521A8BDLJ#U0 use?
The R5F521A8BDLJ#U0 uses the PTLG0100JA-A package: a 100-ball TFLGA with 7 × 7 mm body size and 0.65-mm ball pitch. This compact, low-profile package provides superior thermal dissipation and EMI shielding compared to LQFP variants, making it ideal for space-constrained industrial metering designs.
Is the R5F521A8BDLJ#U0 qualified for IEC60730 Class B compliance?
Yes, the R5F521A8BDLJ#U0 includes multiple hardware features to support IEC60730 Class B compliance: self-diagnostic A/D converter, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assist, and analog input disconnection detection - reducing software certification burden for safety-critical applications.
R5F521A8BDLJ#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:
- 512KB (512K 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:
R5F521A8BDLJ#U0 FAQ
1.How can I place an order for R5F521A8BDLJ#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F521A8BDLJ#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 R5F521A8BDLJ#U0 reliable?
The price and inventory of R5F521A8BDLJ#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F521A8BDLJ#U0 is usually 5 days.
3.What payment methods are accepted for R5F521A8BDLJ#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F521A8BDLJ#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F521A8BDLJ#U0?
R5F521A8BDLJ#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F521A8BDLJ#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 R5F521A8BDLJ#U0?
For technical support, including R5F521A8BDLJ#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F521A8BDLJ#U0 requirements.
6.How does Aetrix verify that R5F521A8BDLJ#U0 is sourced from the original manufacturer or authorized distributors?
All R5F521A8BDLJ#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 R5F521A8BDLJ#U0 meets industry standards.
7.What is the process for return or replacement of R5F521A8BDLJ#U0?
All R5F521A8BDLJ#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F521A8BDLJ#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 R5F521A8BDLJ#U0 part is unused and in its original packaging.
Return procedure for R5F521A8BDLJ#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F521A8BDLJ#U0 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
