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Renesas R5F523E5ADFL#50
- Part No.:
- R5F523E5ADFL#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F523E5ADFL#50.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,332
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Product details
Overview
R5F523E5ADFL#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor systems, featuring dual 24-bit delta-sigma ADCs (DSAD0/DSAD1), rail-to-rail programmable gain instrumentation amplifiers (PGA ×2), 2.5 V low-drift voltage reference, four excitation current sources (50–1000 µA), and CAN 2.0B interface. It operates at up to 32 MHz with 128 KB flash, 16 KB SRAM, and 8 KB data flash, supporting IEC60730-compliant diagnostics.
For engineers reviewing the R5F523E5ADFL#50 datasheet, R5F523E5ADFL#50 pinout, R5F523E5ADFL#50 application, or R5F523E5ADFL#50 equivalent, this MCU delivers verified 23-bit effective resolution at 7.6 SPS, ±0.2% excitation current matching, 10 nV/°C PGA offset drift, simultaneous 50/60 Hz rejection, and hardware-assisted A/D disconnect detection - critical for load cell, RTD, and thermocouple front-end designs requiring metrology-grade accuracy and functional safety support.
Technical Context
The R5F523E5ADFL#50 integrates two independent 24-bit delta-sigma A/D converters with fourth-order sinc filters, each supporting differential inputs, programmable gain (×1 to ×128), and synchronized start via ELC. Its analog front end includes a 2.5 V reference (10 ppm/°C drift), bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2), and four matched excitation current sources (±0.2% matching, 5 ppm/°C drift).
It implements the RXv2 CPU core with IEEE 754-compliant FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination - allowing MTU timers, DSAD conversion triggers, and CAN message transmission to be chained during deep sleep modes without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture, 32 MHz max, 64 DMIPS, single-cycle instruction execution |
| Flash / RAM / Data Flash | 128 KB on-chip flash (no wait states @32 MHz), 16 KB SRAM, 8 KB data flash (1M program/erase cycles) |
| Delta-Sigma ADC | Two 24-bit units (DSAD0/DSAD1), 23-bit effective resolution @7.6 SPS, simultaneous 50/60 Hz rejection |
| PGA & Reference | Rail-to-rail PGA (gain ×1–×128), 30 nVRMS noise @gain=128, 2.5 V reference (±10 ppm/°C, ±10 mA) |
| Excitation Sources | Four IEXC outputs (50–1000 µA), ±0.2% current matching, 5 ppm/°C drift, disconnect detection assist |
| Communication | CAN 2.0B (1 Mbps), 3× SCIg (UART/SPI/I²C), 1× RIIC, 1× RSPI (16 Mbps), ELC-triggered peripheral chaining |
| Package & Temp | 48-pin LFQFP (PLQP0048KB-B, 7×7 mm, 0.5 mm pitch), –40°C to +85°C operating range (D version) |
Pinout & Package
Package: 48-pin LFQFP (PLQP0048KB-B), 7 mm × 7 mm, 0.5 mm pitch, exposed pad (thermal pad not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN11 | Analog input multiplexer channels | Support differential (6 ch × 2 units), pseudo-differential, or single-ended inputs for DSAD0/DSAD1 |
| REF0P/REF0N, REF1P/REF1N | Dual delta-sigma reference inputs | Independent external reference pairs per DSAD unit; enable ratiometric or absolute measurement modes |
| REFOUT | Internal 2.5 V reference output | Stabilized by 0.47 µF capacitor to AVSS0; used as DSAD reference or external circuit bias |
| IEXC0–IEXC3 | Excitation current source outputs | Four programmable current sinks (50–1000 µA); support 4-wire RTD, load cell bridge excitation, and sensor self-test |
| LSW | Low-side switch output | 10 Ω max on-resistance, 30 mA max current; enables controlled grounding of sensor return paths |
| CRXD0 / CTXD0 | CAN transceiver interface | Dedicated differential CAN bus pins compliant with ISO 11898-1; require external CAN PHY |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Safety Support | Hardware-accelerated RAM test (DOC), A/D self-diagnostic, clock accuracy monitoring (CAC), IWDT with dedicated oscillator |
| Synchronized Dual A/D Conversion | ELC-triggered simultaneous start of both DSAD units ensures phase-aligned sampling for multi-sensor coherence |
| Low-Power Precision Operation | DSAD low-power mode (1.9–3906 SPS) with 10 nV/°C offset drift enables battery-powered sensor nodes with <1 µA standby current |
| Hardware Calibration Engine | On-the-fly offset/gain error calibration for DSAD; eliminates need for external calibration coefficients in firmware |
| Event-Driven Peripheral Coordination | ELC links 56 event sources (e.g., timer overflow → DSAD trigger → CAN TX request) without CPU wake-up or ISR overhead |
Applications
| Industrial Weighing Systems | High-Accuracy Temperature Monitoring |
|---|---|
|
Use Scenario: Digital load cell interface in platform scales and hopper weighers requiring 20,000+ divisions and OIML R76 compliance. IC Role / Device Role / Timing Role: Primary analog front-end MCU handling bridge excitation, ratiometric 24-bit A/D conversion, linearization, and CAN-based weight reporting. Use Value: 23-bit effective resolution at 7.6 SPS and ±0.2% excitation current matching ensure sub-gram repeatability under thermal drift and supply variation. |
Use Scenario: Multi-channel RTD/thermocouple measurement in PLC analog input modules with cold-junction compensation. IC Role / Device Role / Timing Role: Sensor signal conditioner with programmable gain, excitation sourcing, reference buffering, and digital filtering before SPI/CAN transmission. Use Value: Simultaneous 50/60 Hz rejection at 10/54 SPS eliminates mains interference in factory-floor environments without software filtering latency. |
| Smart Grid Current/Voltage Sensors | Medical Impedance Analyzers |
|
Use Scenario: High-isolation current transformer (CT) and potential transformer (PT) interfaces in DIN-rail energy meters. IC Role / Device Role / Timing Role: Metrology-grade ADC controller with dual DSAD units for concurrent voltage/current sampling and harmonic analysis. Use Value: Fourth-order sinc filter and hardware-based offset/gain calibration meet IEC 62053-22 Class 0.2 accuracy requirements over –40°C to +85°C. |
Use Scenario: Portable bioimpedance analyzers measuring tissue conductivity across multiple frequencies using constant-current excitation. IC Role / Device Role / Timing Role: Precision current source driver and synchronous demodulator frontend with integrated PGA and reference stability. Use Value: 5 ppm/°C excitation current drift and 10 ppm/°C reference drift maintain calibration integrity across clinical temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision analog measurement applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F523E6ADFL#30 | 256 KB flash, 32 KB RAM, same package and analog peripherals; higher memory for complex filtering or protocol stacks | Required when firmware exceeds 128 KB or real-time FFT/ML inference is needed alongside metrology functions | Select R5F523E6ADFL#30 if future firmware expansion or dual-role operation (e.g., sensor + edge analytics) is anticipated |
| ADS131M04IPBSR | Standalone 24-bit delta-sigma ADC (4 ch), no MCU, no PGA, no excitation sources; requires external processor and reference | Suitable only for designs where analog acquisition is isolated from control logic and timing-critical processing is offloaded | Choose ADS131M04IPBSR only when system architecture mandates separation of analog acquisition and host processing |
Compared with R5F523E5ADFL#50, R5F523E6ADFL#30 offers headroom for firmware growth while retaining identical analog performance and pin compatibility; ADS131M04IPBSR reduces integration but increases BOM count, layout complexity, and system-level calibration burden.
Availability
R5F523E5ADFL#50 is available at Aetrix Electronics and suitable for industrial weighing systems, smart grid metering, high-accuracy temperature monitoring, and medical impedance sensing requiring stable component supply and long-term lifecycle assurance.
Supply support for R5F523E5ADFL#50 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 infrastructure markets.
The RX23E-A Group - including R5F523E5ADFL#50 - was designed specifically for high-precision sensor signal conditioning in industrial automation, energy metering, and test equipment, integrating metrology-grade analog front ends with functional safety features.
FAQ
What is the maximum effective resolution achievable with the R5F523E5ADFL#50's delta-sigma ADCs?
The R5F523E5ADFL#50 achieves up to 23-bit effective resolution at 7.6 SPS with gain = 1 and full-scale output data rate, verified per datasheet R01DS0330EJ0130. This is enabled by its fourth-order sinc filter, on-chip offset/gain calibration, and low-noise PGA (30 nVRMS @ gain = 128). Resolution decreases predictably at higher output rates - e.g., 20-bit at 15625 SPS - due to reduced oversampling ratio.
Does the R5F523E5ADFL#50 support simultaneous sampling across both 24-bit delta-sigma ADC units?
Yes, the R5F523E5ADFL#50 supports inter-unit synchronized A/D conversion start via hardware trigger from the Event Link Controller (ELC). This allows DSAD0 and DSAD1 to sample concurrently with sub-microsecond skew, essential for phase-coherent measurements such as voltage/current in energy meters or dual-axis load cell arrays.
What excitation current configurations are supported by the R5F523E5ADFL#50 for RTD or load cell bridges?
The R5F523E5ADFL#50 provides four independent excitation current sources (IEXC0–IEXC3) configurable from 50 µA to 1000 µA in discrete steps. They support 2-, 3-, or 4-wire RTD connections and full-bridge or half-bridge load cells. Current matching is ±0.2% and drift is 5 ppm/°C, enabling high-accuracy ratiometric measurements without external calibration.
How does the R5F523E5ADFL#50 handle 50 Hz and 60 Hz power-line interference rejection?
The R5F523E5ADFL#50 implements simultaneous 50 Hz and 60 Hz rejection in hardware via its fourth-order sinc filter when configured for output data rates of 10 SPS or 54 SPS. This eliminates the need for software-based notch filtering, reducing CPU load and ensuring deterministic latency - critical for real-time closed-loop control in industrial sensors.
Is the R5F523E5ADFL#50 pin-compatible with other members of the RX23E-A Group?
Yes, the R5F523E5ADFL#50 in the 48-pin LFQFP package (PLQP0048KB-B) shares identical pinout with R5F523E6ADFL#30, R5F523E5AGFL#30, and R5F523E6AGFL#30. All share the same analog peripheral mapping, GPIO assignment, and power/ground pin locations - enabling drop-in replacement for memory or temperature grade upgrades without PCB revision.
R5F523E5ADFL#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RX23E-A
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RXv2
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 6x12/24b SAR, Sigma-Delta
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5ADFL#50 FAQ
1.How can I place an order for R5F523E5ADFL#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5ADFL#50 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 R5F523E5ADFL#50 reliable?
The price and inventory of R5F523E5ADFL#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5ADFL#50 is usually 5 days.
3.What payment methods are accepted for R5F523E5ADFL#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5ADFL#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5ADFL#50?
R5F523E5ADFL#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5ADFL#50 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 R5F523E5ADFL#50?
For technical support, including R5F523E5ADFL#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5ADFL#50 requirements.
6.How does Aetrix verify that R5F523E5ADFL#50 is sourced from the original manufacturer or authorized distributors?
All R5F523E5ADFL#50 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 R5F523E5ADFL#50 meets industry standards.
7.What is the process for return or replacement of R5F523E5ADFL#50?
All R5F523E5ADFL#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5ADFL#50, 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 R5F523E5ADFL#50 part is unused and in its original packaging.
Return procedure for R5F523E5ADFL#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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