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Renesas R5F523E5ADNF#20
- Part No.:
- R5F523E5ADNF#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E5ADNF#20.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:480
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Product details
Overview
R5F523E5ADNF#20 from Renesas is a 32-bit RXv2 core MCU 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 (gain = 1–128), 2.5 V low-drift voltage reference (10 ppm/°C), 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, targeting thermocouple and RTD signal conditioning.
For engineers reviewing the R5F523E5ADNF#20 datasheet, R5F523E5ADNF#20 pinout, R5F523E5ADNF#20 application, or R5F523E5ADNF#20 equivalent, this page delivers verified technical context, package-specific peripheral mapping, real-world use-value metrics for precision AFE design, and validated alternative options for IEC60730-compliant industrial measurement systems.
Technical Context
The R5F523E5ADNF#20 implements a dedicated analog front-end architecture with two independent 24-bit delta-sigma ADC units, each supporting fourth-order sinc filtering, simultaneous 50/60 Hz rejection at 10/54 SPS, and inter-unit synchronized conversion start. Its PGA achieves 30 nVRMS noise at gain = 128 and 10 nV/°C offset drift, paired with excitation current sources matching ±0.2% and 5 ppm/°C drift.
It integrates a 32-bit RXv2 CPU core delivering 64 DMIPS at 32 MHz, single-precision IEEE754 FPU, memory protection unit (MPU), and event link controller (ELC) enabling autonomous peripheral coordination during CPU sleep-critical for low-power, deterministic sensor acquisition in PLC I/O modules and smart transmitters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard, 32 MHz max, 64 DMIPS, IEEE754 FPU, MPU |
| Flash / RAM / Data Flash | 128 KB code flash (no-wait @32 MHz), 16 KB SRAM, 8 KB data flash (1M erase cycles) |
| Delta-Sigma ADC | Two 24-bit units, 23-bit effective resolution @7.6 SPS, sinc4 filter, 50/60 Hz rejection |
| PGA Performance | Rail-to-rail input, gain = 1–128, 30 nVRMS noise @gain=128, 10 nV/°C offset drift |
| Voltage Reference | 2.5 V output, 10 ppm/°C drift, ±10 mA drive, external reference input support |
| Excitation Sources | Four channels, 50–1000 µA programmable, ±0.2% matching, 5 ppm/°C drift matching |
| Package & Pins | 40-pin HWQFN (PWQN0040KD-A), 6 × 6 mm, 0.5 mm pitch, 16 GPIO + analog I/O |
| Operating Range | –40°C to +85°C (D version), 1.8–5.5 V supply, three low-power modes |
Pinout & Package
Package: 40-pin HWQFN (PWQN0040KD-A), 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN11 | Analog Input | 12-channel mixed-mode analog I/O; supports differential, pseudo-differential, and single-ended DSAD inputs |
| REF0P/REF0N, REF1P/REF1N | ADC Reference Input | Dedicated differential reference pins per DSAD unit; enable ratiometric or external reference configurations |
| REFOUT | Voltage Reference Output | 2.5 V reference output; requires 0.47 µF capacitor to AVSS0 for stability |
| IEXC0–IEXC3 | Excitation Current Source | Four programmable current outputs (50–1000 µA); used for RTD/bridge sensor biasing |
| LSW | Low-Side Switch | 10 Ω max on-resistance switch; enables controlled grounding of sensor return paths |
| CRXD0 / CTXD0 | CAN Transceiver Interface | Dedicated CAN physical layer I/O; compliant with ISO11898-1 up to 1 Mbps |
| VCC / VSS / AVCC0 / AVSS0 | Power Supply | Separate digital/analog domains; AVCC0 supports 1.8–5.5 V for S12AD operation only |
| P14–P17, PB0–PB1, etc. | General I/O | 16 configurable GPIO; 5-V tolerant, open-drain capable, pull-up selectable |
Key Features
| Feature | Design Value |
|---|---|
| Dual 24-bit DSAD with sinc4 filter | Enables simultaneous high-resolution temperature/strain measurements with built-in 50/60 Hz line-noise rejection |
| Rail-to-rail PGA (×1–128) | Preserves full dynamic range across sensor types (thermocouples, RTDs, load cells) without external signal conditioning |
| Four matched excitation sources | Supports 2-, 3-, and 4-wire RTD configurations with <±0.2% current matching for <0.1% system gain error |
| IEC60730 self-test assist | Hardware-accelerated RAM test (DOC), A/D disconnect detection, clock accuracy monitoring (CAC), and IWDT diagnostics |
| Event Link Controller (ELC) | Triggers ADC conversion, timer capture, or PWM update directly from peripheral events-no CPU wake-up required |
| Low-power timer (LPT) | Runs from dedicated 15-kHz oscillator during software standby, enabling periodic sensor wake-up at µA-level current draw |
Applications
| Industrial Temperature Transmitter | Smart Pressure Sensor Module |
|---|---|
Use Scenario: DIN-rail mounted 4–20 mA transmitter for thermocouple/RTD inputs in process control cabinets. IC Role / Device Role / Timing Role: Primary signal conditioner and protocol processor; performs cold-junction compensation, linearization, and HART modulation. Use Value: Integrated PGA, DSAD, and excitation sources eliminate 6+ external components; LPT enables 1-second wake-up intervals for <100 µA average current. |
Use Scenario: MEMS pressure sensor node with digital output (CAN or RS485) for HVAC or building automation. IC Role / Device Role / Timing Role: Analog front-end and CAN protocol handler; conditions bridge output, compensates for temp/pressure cross-talk, and formats CAN frames. Use Value: Dual DSAD units allow simultaneous pressure and temperature sampling; ELC synchronizes acquisition with CAN message timing for deterministic latency. |
| Programmable Logic Controller (PLC) Analog Input Module | Energy Meter Front-End Controller |
Use Scenario: 8-channel isolated analog input card for modular PLC backplanes with hot-swap capability. IC Role / Device Role / Timing Role: Per-channel AFE manager; handles calibration, fault detection (VDET), and isolation interface handshaking. Use Value: On-chip VDET monitors AVCC0 and analog inputs; DSAD disconnect detection flags broken sensor wires before system-level alarms trigger. |
Use Scenario: Class 0.5 polyphase energy meter requiring metrology-grade voltage/current sampling and tamper detection. IC Role / Device Role / Timing Role: High-accuracy metrology engine; performs simultaneous voltage/current delta-sigma conversion, RMS calculation, and anti-tamper logic. Use Value: 23-bit effective resolution at 7.6 SPS meets IEC62053-22 requirements; internal 2.5 V reference eliminates external precision reference IC. |
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 |
|---|---|---|---|
| R5F523E5ADFL#30 | 48-pin LFQFP package; adds 4 more DSAD differential inputs and 2 additional S12AD channels | Suitable for multi-sensor nodes requiring >4 analog inputs or higher GPIO count | Select when board layout allows larger footprint and additional analog I/O is needed for sensor fusion. |
| ADS131M04IPBSR | Standalone 24-bit delta-sigma ADC (quad-channel), no MCU, no PGA, no excitation sources | Requires external microcontroller, reference, and excitation circuitry for full sensor solution | Choose when analog signal chain must be separated from control logic or when existing MCU lacks integrated AFE. |
Compared with R5F523E5ADNF#20, the R5F523E5ADFL#30 offers expanded analog I/O in a larger package but identical core AFE performance, while the ADS131M04IPBSR provides higher channel density as a pure ADC but demands full external system integration-making R5F523E5ADNF#20 optimal for compact, self-contained industrial sensor designs.
Availability
R5F523E5ADNF#20 is available at Aetrix Electronics and suitable for industrial temperature transmitters, smart pressure sensors, PLC analog input modules, and energy meter front-ends requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R5F523E5ADNF#20 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 RX23E-A Group-including R5F523E5ADNF#20-is designed specifically for high-accuracy sensor signal conditioning in industrial measurement systems, integrating metrology-grade analog peripherals with robust MCU functionality for IEC60730 compliance.
FAQ
What is the maximum effective resolution of the R5F523E5ADNF#20's delta-sigma ADC at 7.6 SPS?
The R5F523E5ADNF#20 achieves up to 23-bit effective resolution with its 24-bit delta-sigma ADCs at 7.6 SPS in normal mode (gain = 1). This is confirmed in the datasheet's "Analog functions" section and enables direct interface with high-precision RTDs and strain gauges without external amplification. The R5F523E5ADNF#20 maintains this resolution across both DSAD units simultaneously when using synchronized start triggers.
Does the R5F523E5ADNF#20 support IEC60730 Class B compliance out of the box?
Yes, the R5F523E5ADNF#20 includes hardware-assisted IEC60730 Class B features: RAM test via DOC, A/D converter disconnect detection, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, and analog input voltage fault detection. These are documented in the "Useful functions for IEC60730 compliance" section of the datasheet and require minimal firmware integration to meet certification requirements for the R5F523E5ADNF#20.
How many excitation current sources does the R5F523E5ADNF#20 provide, and what is their matching specification?
The R5F523E5ADNF#20 provides four excitation current sources (IEXC0–IEXC3) with programmable output from 50 µA to 1000 µA. Their current matching is specified at ±0.2%, and drift matching is 5 ppm/°C-critical for minimizing gain error in 3- and 4-wire RTD measurements. This specification is explicitly stated in the "Analog front end (AFE)" section of the datasheet and applies directly to the R5F523E5ADNF#20.
What is the operating temperature range and supply voltage range for the R5F523E5ADNF#20?
The R5F523E5ADNF#20 is rated for –40°C to +85°C (D version) and operates from a single 1.8 V to 5.5 V supply. Its maximum CPU frequency scales with voltage: 8 MHz at 1.8–2.4 V, 16 MHz at 2.4–2.7 V, and 32 MHz at 2.7–5.5 V. These values are defined in Table 1.1 "Outline of Specifications" and apply specifically to the R5F523E5ADNF#20 as a D-version 40-pin device.
Can the R5F523E5ADNF#20 perform simultaneous sampling across both 24-bit delta-sigma ADC units?
Yes, the R5F523E5ADNF#20 supports inter-unit A/D conversion synchronized start via software trigger or ELC event, enabling true simultaneous sampling of two independent analog signals (e.g., voltage and current in energy meters). This capability is explicitly listed under "Analog functions" in the datasheet and is functionally identical across all RX23E-A variants including the R5F523E5ADNF#20.
R5F523E5ADNF#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RX200
- Packaging:
- Tray
- 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:
- 20
- 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 4x12b, 6x24b Sigma-Delta
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5ADNF#20 FAQ
1.How can I place an order for R5F523E5ADNF#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5ADNF#20 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 R5F523E5ADNF#20 reliable?
The price and inventory of R5F523E5ADNF#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5ADNF#20 is usually 5 days.
3.What payment methods are accepted for R5F523E5ADNF#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5ADNF#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5ADNF#20?
R5F523E5ADNF#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5ADNF#20 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 R5F523E5ADNF#20?
For technical support, including R5F523E5ADNF#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5ADNF#20 requirements.
6.How does Aetrix verify that R5F523E5ADNF#20 is sourced from the original manufacturer or authorized distributors?
All R5F523E5ADNF#20 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 R5F523E5ADNF#20 meets industry standards.
7.What is the process for return or replacement of R5F523E5ADNF#20?
All R5F523E5ADNF#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5ADNF#20, 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 R5F523E5ADNF#20 part is unused and in its original packaging.
Return procedure for R5F523E5ADNF#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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