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Renesas R5F523E6KDNF#20
- Part No.:
- R5F523E6KDNF#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E6KDNF#20.pdf
- Description:
- 32BIT MCU RX23E-B 256K HWQFN40 T
- Quantity:
- Payment:
- Shipping:
Inventory:4,930
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Product details
Overview
R5F523E6KDNF#20 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing applications. It integrates a 24-bit delta-sigma ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and a low-drift 2.5-V voltage reference (8 ppm/°C). Operating at up to 32 MHz with 256 KB flash, 32 KB SRAM, and 8 KB data flash, it targets load cell, pressure transducer, and weigh scale systems requiring IEC 60730 compliance.
For engineers reviewing the R5F523E6KDNF#20 datasheet, R5F523E6KDNF#20 pinout, R5F523E6KDNF#20 application, or R5F523E6KDNF#20 equivalent, key selection criteria include its 10-V analog input range, 125 kSPS delta-sigma sampling rate, integrated PGA offset drift (4 nV/°C), CAN 2.0B interface, and HWQFN-40 package with 5-V-tolerant I/Os - all critical for precision sensor front-end designs.
Technical Context
The R5F523E6KDNF#20 implements the RXv2 CPU core with IEEE 754-compliant single-precision FPU, 32-bit multiply-accumulate DSP instructions, and memory protection unit (MPU) for functional safety. Its analog subsystem centers on the DSADB module: a 24-bit delta-sigma ADC with fourth/fifth-order sinc filtering, simultaneous 50/60 Hz rejection at 10/54 SPS, and programmable modulator clock (4 MHz typical).
Digital integration includes one CAN channel (ISO 11898-1, up to 1 Mbps), six SCI interfaces (asynchronous/clock-synchronous/smart card), one I²C bus (400 kbps), one RSPI (16 Mbps), and ELC-driven event-triggered operation enabling low-power synchronized peripheral sequencing without CPU wake-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture, 32 MHz max, 64 DMIPS, IEEE 754 FPU, MPU |
| Flash / RAM / Data Flash | 256 KB code flash (no-wait at 32 MHz), 32 KB SRAM, 8 KB data flash (1M erase cycles) |
| Delta-Sigma ADC | 24-bit resolution, ±10-V input range via HVAIN pins, 125 kSPS max, 3.8 SPS–125 kSPS programmable data rate |
| PGA Performance | Rail-to-rail input, gain = 1–128, offset drift = 4 nV/°C (gain = 64–128), gain drift = 1 ppm/°C (gain = 1–16) |
| Voltage Reference | 2.5 V output, 8 ppm/°C drift (–40 to +85°C), ±10 mA output current, external reference input supported |
| Excitation Current Sources | Two channels, 50–1000 µA programmable, matching ±0.2%, drift matching 5 ppm/°C |
| Package & Temp Range | PWQN0040KD-A: 40-pin HWQFN, 6 × 6 mm, 0.5 mm pitch, –40°C to +85°C (D-version) |
Pinout & Package
PWQN0040KD-A is a 40-pin HWQFN package (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad, rated for –40°C to +85°C operation. It provides 13 general-purpose I/O pins (5-V tolerant), 1 dedicated input pin, 14 pull-up resistors, and 13 open-drain outputs - optimized for compact industrial sensor node layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Core logic supply (1.8–5.5 V); separate AVCC0 (4.5–5.5 V) required for 12-bit ADC and analog front end |
| HVAIN0–HVAIN1 | Analog input (high-voltage) | ±10-V differential input pair supporting direct connection to strain gauge bridges without external signal conditioning |
| IEXC0 / IEXC1 | Excitation current output | Programmable current sources (50–1000 µA) for RTD or bridge sensor biasing with matched drift performance |
| VREFH / VREFL | ADC reference inputs | Accept external reference or use internal 2.5-V reference; enables ratiometric measurement stability |
| TXD0 / RXD0 | SCI0 serial interface | Asynchronous UART interface for host communication or configuration; supports bit-rate modulation for noise immunity |
| CAN_TX / CAN_RX | CAN physical layer interface | Differential CAN bus signals compliant with ISO 11898-1, enabling robust fieldbus connectivity in industrial networks |
Key Features
| Feature | Design Value |
|---|---|
| IEC 60730 Safety Support | Hardware-assisted self-test for ADC, clock accuracy (CAC), IWDT, RAM (via DOC), and disconnect detection for analog inputs |
| Low-Power Operation | Three low-power modes (sleep/deep sleep/software standby); LPT runs during software standby using sub-clock oscillator |
| Event-Driven Processing | ELC enables direct inter-module triggering (e.g., MTU timer → DSAD conversion start) without CPU interrupt latency or wake-up overhead |
| Digital Filtering Flexibility | Four selectable sinc filter configurations (e.g., fifth-order + first-order) for tailored noise suppression and settling time trade-offs |
| High-Voltage Analog Integration | Integrated low-side switch (10 Ω max on-resistance), HVCOM disconnect detector, and ±10-V input tolerance eliminate external protection circuitry |
Applications
| Industrial Weigh Scales | Pressure Transmitter Modules |
|---|---|
|
Use Scenario: Digital weighing system for tank-level monitoring in chemical processing plants, requiring 24-bit resolution and temperature-stable analog front end. IC Role / Device Role / Timing Role: Primary sensor signal conditioner and controller: digitizes mV-level bridge outputs, performs linearization and temperature compensation, and communicates weight data via CAN bus. Use Value: ±10-V HVAIN inputs accept raw bridge signals directly; 4 nV/°C PGA offset drift ensures <0.01%FS error over –40°C to +85°C operating range. |
Use Scenario: Smart 4–20 mA pressure transmitter with HART protocol support for oil & gas pipeline monitoring. IC Role / Device Role / Timing Role: Analog acquisition engine and system controller: conditions piezoresistive sensor output, generates 4–20 mA loop current via external DAC driver, and handles HART FSK modulation via SCI. Use Value: Dual excitation current sources (IEXC0/IEXC1) enable dual-sensor diagnostics; 1 ppm/°C PGA gain drift maintains calibration integrity across wide ambient swings. |
| Load Cell Signal Conditioners | Energy Meter Sensor Front Ends |
|
Use Scenario: DIN-rail mounted load cell amplifier with isolated RS-485 output for factory automation. IC Role / Device Role / Timing Role: Precision analog front end and real-time processor: acquires differential bridge signals, applies digital filtering (sinc⁵ + sinc¹), computes calibrated force values, and formats data for Modbus RTU transmission. Use Value: Simultaneous 50/60 Hz rejection at 10/54 SPS eliminates mains interference without external notch filters; 125 kSPS oversampling enables high-speed transient capture. |
Use Scenario: Polyphase energy meter with anti-tampering features and metrology-grade accuracy per IEC 62053-22 Class 0.2. IC Role / Device Role / Timing Role: Metrology acquisition unit: digitizes current/voltage transformers via DSAD, performs RMS/power calculations using FPU, and validates integrity via CRC and self-test routines. Use Value: On-chip 2.5-V reference (8 ppm/°C) serves as stable ADC reference and excitation source; BGO-capable data flash stores calibration coefficients with 1M-cycle endurance. |
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 |
|---|---|---|---|
| R5F523E6BDNF#20 | Same 40-pin HWQFN package and 256 KB/32 KB memory, but limited to 5-V analog input range and no HVAIN pins | Suitable for lower-voltage sensor interfaces (e.g., 0–5 V thermocouple amplifiers) where ±10-V input is unnecessary | Select when cost-sensitive designs omit high-voltage bridge sensing and require identical footprint and firmware compatibility |
| ADUCM360BCPZ-RL7 | ARM Cortex-M3 core, 24-bit ΣΔ ADC (19.2 kSPS), integrated 4 mA–20 mA DAC, but no CAN or LCD support | Targeted at 4–20 mA loop-powered transmitters with minimal external components, lacking industrial fieldbus connectivity | Choose for ultra-low-power, loop-powered applications where CAN is not required and integrated DAC simplifies analog output design |
Compared with R5F523E6KDNF#20, R5F523E6BDNF#20 reduces analog input range but retains full pin compatibility and firmware portability, while ADUCM360BCPZ-RL7 trades CAN and flexible I/O for native 4–20 mA output and lower active power - making each optimal for distinct subsystem roles in industrial measurement architectures.
Availability
R5F523E6KDNF#20 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, load cell conditioners, and energy meter sensor front ends requiring stable component supply, long-term lifecycle support, and guaranteed –40°C to +85°C operation.
Supply support for R5F523E6KDNF#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RX23E-B Group - including R5F523E6KDNF#20 - was designed specifically for high-accuracy industrial sensing, integrating metrology-grade analog peripherals, functional safety features, and real-time processing in compact packages.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6KDNF#20?
The R5F523E6KDNF#20 supports a maximum delta-sigma ADC sampling rate of 125 kSPS, achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. This rate enables high-fidelity capture of fast transients in load cell or vibration sensor applications while maintaining 24-bit effective resolution at lower data rates (e.g., 3.8 SPS).
Does R5F523E6KDNF#20 support simultaneous 50 Hz and 60 Hz line-frequency rejection?
Yes, R5F523E6KDNF#20 provides hardware-assisted simultaneous 50 Hz and 60 Hz rejection at specific output data rates: 10 SPS and 54 SPS. This feature is implemented in the DSADB digital filter block and requires no CPU intervention, making it ideal for AC-coupled industrial sensors in globally deployed equipment.
What are the voltage and temperature specifications for the internal 2.5-V reference in R5F523E6KDNF#20?
The internal voltage reference in R5F523E6KDNF#20 delivers a precise 2.5 V output with a temperature drift of 8 ppm/°C over the full operating range of –40°C to +85°C. It supplies ±10 mA and supports external reference input, enabling ratiometric measurements critical for sensor stability in varying thermal environments.
Can R5F523E6KDNF#20 drive a 4–20 mA current loop directly?
No, R5F523E6KDNF#20 does not integrate a 4–20 mA DAC or loop driver. It provides a 16-bit D/A converter (R16DA) for voltage output only. To implement 4–20 mA, an external op-amp/V-I converter (e.g., XTR115) must be used with the R16DA output and excitation current sources for sensor biasing - a common architecture in smart transmitter designs.
Is R5F523E6KDNF#20 pin-compatible with other RX23E-B variants in the same package?
Yes, all RX23E-B devices in the PWQN0040KD-A (40-pin HWQFN) package - including R5F523E6KDNF#20, R5F523E6BDNF#20, and R5F523E6MDNF#20 - share identical pinouts and mechanical footprint. Firmware and PCB layout are interchangeable across these variants, allowing seamless migration based on analog input range (±10 V vs. 5 V) or sampling rate (125 kSPS vs. 31.25 kSPS) requirements.
R5F523E6KDNF#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RX23E-B
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RXv2
- Core Size:
- 32-Bit
- Speed:
- 32MHz
- Connectivity:
- CANbus, I2C, SCI, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 13
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 6x12b SAR, 4x24b Sigma-Delta; D/A 1x16b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E6KDNF#20 FAQ
1.How can I place an order for R5F523E6KDNF#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E6KDNF#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 R5F523E6KDNF#20 reliable?
The price and inventory of R5F523E6KDNF#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E6KDNF#20 is usually 5 days.
3.What payment methods are accepted for R5F523E6KDNF#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E6KDNF#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E6KDNF#20?
R5F523E6KDNF#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E6KDNF#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 R5F523E6KDNF#20?
For technical support, including R5F523E6KDNF#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E6KDNF#20 requirements.
6.How does Aetrix verify that R5F523E6KDNF#20 is sourced from the original manufacturer or authorized distributors?
All R5F523E6KDNF#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 R5F523E6KDNF#20 meets industry standards.
7.What is the process for return or replacement of R5F523E6KDNF#20?
All R5F523E6KDNF#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E6KDNF#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 R5F523E6KDNF#20 part is unused and in its original packaging.
Return procedure for R5F523E6KDNF#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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