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Renesas R5F523E5ADNF#U0
- Part No.:
- R5F523E5ADNF#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E5ADNF#U0.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
R5F523E5ADNF#U0 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor systems. It integrates two 24-bit delta-sigma ADCs (DSAD0/DSAD1), rail-to-rail programmable gain instrumentation amplifiers (gain = 1–128), a 2.5 V low-drift voltage reference (10 ppm/°C), four excitation current sources (50–1000 µA), and a 12-bit SAR ADC (1.4 µs conversion). 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#U0 datasheet, R5F523E5ADNF#U0 pinout, R5F523E5ADNF#U0 application, or R5F523E5ADNF#U0 equivalent, this MCU delivers calibrated 23-bit effective resolution at 7.6 SPS, simultaneous 50/60 Hz rejection, on-chip self-diagnostic support for IEC60730 Class B compliance, and CAN 2.0B interface for industrial fieldbus integration - all in a compact 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) package rated for –40°C to +85°C.
Technical Context
The R5F523E5ADNF#U0 implements a dual delta-sigma AFE architecture with independent modulator clocks (500 kHz typ.), fourth-order sinc filters, and per-channel PGA configuration. Its analog front end supports differential, pseudo-differential, and single-ended inputs across up to six channels per DSAD unit, with offset/gain calibration and disconnect detection assist.
It features event-driven operation via the Event Link Controller (ELC), enabling synchronized A/D conversion start, timer triggering, and module activation without CPU intervention - critical for low-power, deterministic sensor acquisition in sleep modes including software standby with active LPT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard core, 32 MHz max, 64 DMIPS, IEEE 754-compliant FPU |
| Flash / RAM / Data Flash | 128 KB code flash (no-wait @32 MHz), 16 KB SRAM (no-wait), 8 KB data flash (1M erase cycles) |
| Delta-Sigma ADC | Two 24-bit units; 23-bit effective resolution @7.6 SPS, simultaneous 50/60 Hz rejection |
| PGA & Reference | Rail-to-rail PGA (×1–×128), 30 nVRMS noise @×128, 2.5 V ref (10 ppm/°C drift, ±10 mA) |
| Excitation Sources | Four programmable current sources (50–1000 µA), matching ±0.2%, drift 5 ppm/°C |
| Package & Temp Range | 40-pin HWQFN (PWQN0040KD-A), 6 × 6 mm, 0.5 mm pitch; –40°C to +85°C (D-grade) |
| Communication | 1× CAN 2.0B (1 Mbps), 2× SCIg (asynchronous/clock-sync/I²C/SPI), 1× RIIC, 1× RSPI (16 Mbps) |
Pinout & Package
40-pin HWQFN (PWQN0040KD-A), 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad. Pin functions validated per Renesas R01DS0330EJ0130 Rev.1.30, pages 11–13 and Figure 1.5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN11 | Analog input multiplexer inputs | Support differential/pseudo-differential/single-ended DSAD inputs; AIN4/REF1N and AIN5/REF1P serve as secondary reference inputs |
| REF0P/REF0N, REF1P/REF1N | Delta-sigma ADC reference inputs | Dual independent reference pairs for DSAD0 and DSAD1; enable ratiometric or external reference configurations |
| REFOUT | Internal voltage reference output | 2.5 V buffered reference output; requires 0.47 µF capacitor to AVSS0 for stability |
| IEXC0–IEXC3 | Excitation current source outputs | Four matched current sources (50–1000 µA); used for RTD/bridge sensor biasing with <±0.2% matching |
| LSW | Low-side switch output | 10 Ω max on-resistance switch; enables controlled grounding of sensor return paths during diagnostics |
| CRXD0 / CTXD0 | CAN transceiver interface | Dedicated CAN physical layer pins compliant with ISO 11898-1; support 1 Mbps operation with internal termination assist |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Class B Support | Integrated self-test for A/D converters, clock accuracy (CAC), IWDT, RAM (via DOC), and analog disconnect detection |
| Synchronized Dual A/D Acquisition | Inter-unit DSAD start synchronization via ELC or software trigger ensures phase-aligned sampling across both 24-bit converters |
| Low-Power Precision Operation | DSAD low-power mode (1.9–3906 SPS) with 500 kHz modulator clock enables <100 µA active analog acquisition current |
| Programmable Gain Instrumentation Amplifier | Rail-to-rail input/output, 30 nVRMS noise @×128, 10 nV/°C offset drift, 1 ppm/°C gain drift - enables direct RTD/thermocouple interfacing |
| Event Link Controller (ELC) | 56 event sources linked directly to peripherals; eliminates CPU wake-up for A/D triggers, PWM updates, and timer starts during deep sleep |
Applications
| Industrial Temperature Transmitter | High-Accuracy Weigh Scale Controller |
|---|---|
|
Use Scenario: DIN-rail mounted transmitter converting Pt100/1000 RTD signals to 4–20 mA or HART output. IC Role / Device Role / Timing Role: Primary signal conditioner and controller; performs cold-junction compensation, linearization, and digital output modulation. Use Value: Achieves ±0.05°C system accuracy using on-chip 23-bit DSAD resolution, matched excitation currents, and integrated 2.5 V reference - eliminating external precision components. |
Use Scenario: Platform for legal-for-trade weighing instruments requiring OIML R76 compliance. IC Role / Device Role / Timing Role: Central AFE and computation engine; acquires load cell mV/V signals, applies real-time filtering, and executes calibration algorithms. Use Value: Simultaneous 50/60 Hz rejection at 10/54 SPS enables stable readings in electrically noisy factory environments without external notch filters. |
| Smart Pressure Transducer | Multi-Sensor Industrial Gateway |
|
Use Scenario: Field-deployable pressure sensor with integrated diagnostics and CAN bus reporting. IC Role / Device Role / Timing Role: Analog front-end + MCU; conditions bridge output, measures temperature for compensation, and manages CAN protocol stack. Use Value: On-chip LSW and excitation sources allow automatic 4-wire/6-wire bridge configuration and open-circuit detection - reducing external switching complexity. |
Use Scenario: Edge node aggregating data from multiple analog sensors (RTDs, thermocouples, strain gauges) before forwarding via CAN or RS485. IC Role / Device Role / Timing Role: Multi-sensor hub controller; time-synchronizes acquisition across channels and buffers data for protocol translation. Use Value: ELC-triggered inter-unit DSAD start and DTC-assisted data movement enable deterministic multi-sensor sampling with <1 µs skew - critical for coherent vibration analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision analog microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F523E5ADFL#30 | Same core and AFE, but 48-pin LFQFP (7 × 7 mm); adds 2 extra DSAD differential inputs and 2 extra S12AD channels | Required when >4 DSAD differential inputs or >4 S12AD channels needed; higher pin count supports more sensor routing flexibility | Select R5F523E5ADFL#30 if board layout allows larger footprint and additional analog channel count is required. |
| ADS131M04IPBSR | Dedicated 4-channel 24-bit delta-sigma ADC with built-in PGA and reference; no MCU, no flash, no CAN | Used only as standalone AFE; requires external host MCU for processing, communication, and diagnostics | Select ADS131M04IPBSR only when analog acquisition is fully decoupled from control logic and CAN is handled externally. |
Compared with R5F523E5ADNF#U0, the R5F523E5ADFL#30 offers expanded analog I/O in a larger package but identical firmware compatibility, while the ADS131M04IPBSR provides higher channel density per mm² but demands external processing and fails to integrate IEC60730 diagnostics or CAN - making R5F523E5ADNF#U0 optimal for space-constrained, self-contained industrial sensor nodes.
Availability
R5F523E5ADNF#U0 is available at Aetrix Electronics and suitable for industrial temperature transmitters, high-accuracy weigh scale controllers, smart pressure transducers, and multi-sensor industrial gateways requiring stable component supply across extended product lifecycles.
Supply support for R5F523E5ADNF#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 infrastructure markets.
The RX23E-A Group - including R5F523E5ADNF#U0 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, featuring integrated delta-sigma AFEs, IEC60730 support, and CAN connectivity in compact packages.
FAQ
What is the maximum effective resolution achievable with the R5F523E5ADNF#U0's delta-sigma ADCs?
The R5F523E5ADNF#U0 achieves up to 23-bit effective resolution at 7.6 SPS with gain = 1 and full-scale output data rate, verified per Renesas R01DS0330EJ0130 datasheet Section 1.1. This performance is enabled by its fourth-order sinc filter, low-noise PGA (30 nVRMS @×128), and on-chip offset/gain calibration - all implemented within the R5F523E5ADNF#U0 silicon.
Does the R5F523E5ADNF#U0 support simultaneous sampling across both 24-bit delta-sigma ADC units?
Yes, the R5F523E5ADNF#U0 supports inter-unit synchronized A/D conversion start via software trigger or Event Link Controller (ELC) signal, ensuring phase-aligned acquisition across DSAD0 and DSAD1. This capability is documented in Section 1.1 and Figure 1.3 of the R01DS0330EJ0130 datasheet and is intrinsic to the R5F523E5ADNF#U0's analog subsystem design.
What is the operating temperature range specified for the R5F523E5ADNF#U0?
The R5F523E5ADNF#U0 is rated for –40°C to +85°C ambient operation (D-grade), as confirmed in Table 1.3 and Section 1.1 of the R01DS0330EJ0130 datasheet. This range applies to all integrated peripherals including the DSAD units, PGAs, voltage reference, and excitation current sources - no derating is required within this envelope.
Can the R5F523E5ADNF#U0 drive a 4–20 mA current loop directly?
No, the R5F523E5ADNF#U0 does not include an integrated 4–20 mA DAC or loop driver. It provides precision analog front-end functions (DSAD, PGA, reference, excitation) and CAN/SCI interfaces suitable for sensor signal conditioning and digital output - external circuitry (e.g., XTR115 or discrete op-amp + transistor) is required to generate the 4–20 mA output. This limitation is consistent across all RX23E-A variants, including the R5F523E5ADNF#U0.
How many excitation current sources does the R5F523E5ADNF#U0 integrate, and what are their key specifications?
The R5F523E5ADNF#U0 integrates four independent excitation current sources (IEXC0–IEXC3), each programmable from 50 µA to 1000 µA in discrete steps. Per datasheet Section 1.1, they feature ±0.2% current matching and 5 ppm/°C drift matching - specifications guaranteed for the R5F523E5ADNF#U0 across its full operating temperature range and supply voltage.
R5F523E5ADNF#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RX200
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5ADNF#U0 FAQ
1.How can I place an order for R5F523E5ADNF#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5ADNF#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 R5F523E5ADNF#U0 reliable?
The price and inventory of R5F523E5ADNF#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5ADNF#U0 is usually 5 days.
3.What payment methods are accepted for R5F523E5ADNF#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5ADNF#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5ADNF#U0?
R5F523E5ADNF#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5ADNF#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 R5F523E5ADNF#U0?
For technical support, including R5F523E5ADNF#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5ADNF#U0 requirements.
6.How does Aetrix verify that R5F523E5ADNF#U0 is sourced from the original manufacturer or authorized distributors?
All R5F523E5ADNF#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 R5F523E5ADNF#U0 meets industry standards.
7.What is the process for return or replacement of R5F523E5ADNF#U0?
All R5F523E5ADNF#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5ADNF#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 R5F523E5ADNF#U0 part is unused and in its original packaging.
Return procedure for R5F523E5ADNF#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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