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Renesas R5F523E6KGNF#20
- Part No.:
- R5F523E6KGNF#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E6KGNF#20.pdf
- Description:
- 32BIT MCU RX23E-B 256K HWQFN40 -
- Quantity:
- Payment:
- Shipping:
Inventory:1,913
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Product details
Overview
R5F523E6KGNF#20 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing, featuring a 24-bit delta-sigma ADC with ±10-V input capability, 125 kSPS max sampling rate, 256 KB on-chip flash, 32 KB SRAM, and integrated excitation current sources (50–1000 µA) - deployed in weigh scales, strain gauge interfaces, and precision process transmitters.
For engineers reviewing the R5F523E6KGNF#20 datasheet, R5F523E6KGNF#20 pinout, R5F523E6KGNF#20 application, or R5F523E6KGNF#20 equivalent, key selection criteria include its 10-V analog input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), low-drift voltage reference (2.5 V, 8 ppm/°C), and CAN 2.0B compliance at up to 1 Mbps - all within a compact 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) package rated for –40°C to +105°C operation.
Technical Context
The R5F523E6KGNF#20 implements a CISC Harvard architecture with 5-stage pipeline and variable-length instructions, delivering 64 DMIPS at 32 MHz. Its analog subsystem centers on a single 24-bit delta-sigma A/D converter (DSADB) with fourth- and fifth-order sinc filtering, simultaneous 50/60 Hz rejection, and offset/gain error calibration - synchronized via ELC-triggered conversion start without CPU intervention.
Digital execution leverages an IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event-driven peripheral coordination via ELC. Power management includes three low-power modes, a low-power timer (LPT) active during software standby, and independent watchdog timer (IWDT) driven by a dedicated 15-kHz on-chip oscillator - supporting IEC60730 Class B functional safety diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit, 32 MHz max, 64 DMIPS - enables real-time sensor fusion and floating-point control loops without external coprocessor |
| Flash / RAM / Data Flash | 256 KB / 32 KB / 8 KB - supports field firmware updates, data logging, and 1M-cycle parameter storage for calibration constants |
| 24-bit Delta-Sigma ADC | ±10-V input range, 125 kSPS max, 24-bit effective resolution at 3.8 SPS - directly interfaces high-output bridge sensors without external signal conditioning |
| Programmable Gain IA | Rail-to-rail, gain = 1–128, 11 nVRMS noise (gain=128), 4 nV/°C offset drift - maintains accuracy across wide temperature ranges in load cell applications |
| Voltage Reference | 2.5 V output, ±10 mA drive, 8 ppm/°C drift - provides stable reference for ADC and DAC, eliminating need for external precision reference ICs |
| Excitation Current Sources | Two channels, 50–1000 µA, ±0.2% matching, 5 ppm/°C drift - enables ratiometric measurement of RTDs and strain gauges with matched sourcing |
| Package & Temp Range | PWQN0040KD-A (40-pin HWQFN, 6 × 6 mm, 0.5 mm pitch), –40°C to +105°C - suitable for space-constrained industrial enclosures with extended thermal requirements |
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 +105°C operation. Pin functions are defined per Table 1.4 of R01DS0402EJ0100 Rev.1.00, with 29 general-purpose I/O pins (including 2 × 5-V tolerant), 2 × HVAIN (±10-V analog inputs), AVCC0/AVSS0 power rails, and dedicated analog ground (AGND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Core power supply / ground | 1.8–5.5 V digital supply; decoupling required per datasheet layout guidelines to maintain ADC SNR |
| AVCC0 / AVSS0 / AGND | Analog power / ground | 4.5–5.5 V analog supply; separate analog ground plane essential for 24-bit ADC performance |
| HVAIN0–HVAIN1 | High-voltage analog inputs | ±10-V differential input pins; support direct connection to unconditioned bridge outputs (e.g., 350 Ω load cells) |
| VREFH / VREFL | ADC reference inputs | Accept internal 2.5 V reference or external reference; enable ratiometric measurement when paired with excitation sources |
| IEXC0 / IEXC1 | Excitation current outputs | Programmable 50–1000 µA current sources; used for 2-/3-/4-wire RTD biasing with matched drift characteristics |
| MTU0–MTU5 | Timer waveform I/O | Support PWM generation, encoder input capture, and A/D trigger synchronization via ELC - no CPU overhead |
| SCI0–SCI12 / RSPI / RIIC / RSCAN | Communication interfaces | SCI (7 ch), RSPI (1 ch), RIIC (1 ch), RSCAN (1 ch, CAN 2.0B) - enable local sensor aggregation and fieldbus connectivity |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit delta-sigma ADC with sinc filters | Configurable fourth/fifth-order sinc filtering enables simultaneous 50/60 Hz line rejection at 10/54 SPS - critical for AC-coupled industrial environments |
| Rail-to-rail programmable gain instrumentation amplifier | Gain = 1–128 with <11 nVRMS noise and <4 nV/°C offset drift - preserves dynamic range and accuracy across –40°C to +105°C |
| On-chip excitation current sources | Two matched 50–1000 µA sources with ±0.2% matching and 5 ppm/°C drift - eliminates external current source ICs and improves ratiometric stability |
| IEC60730 safety assist functions | Hardware-accelerated RAM test (DOC), ADC self-diagnostic, clock accuracy monitoring (CAC), and IWDT disconnect detection - reduces Class B certification effort |
| Event Link Controller (ELC) | Direct hardware triggering between peripherals (e.g., MTU → DSAD start) - enables deterministic, low-latency sensor acquisition without interrupt latency |
Applications
| Industrial Weigh Scale | Strain Gauge Signal Conditioning |
|---|---|
|
Use Scenario: Digital platform scale measuring 0–300 kg with 1-g resolution under factory floor conditions (vibration, EMI, ambient temp swing). IC Role / Device Role / Timing Role: Primary signal acquisition MCU - digitizes mV-level bridge output via HVAIN pins, applies PGA gain, performs sinc-filtered 24-bit conversion, and executes linearization/calibration in real time. Use Value: ±10-V input range and 24-bit ENOB eliminate front-end op-amp stages; integrated excitation sources enable 4-wire RTD temperature compensation without external components. |
Use Scenario: Structural health monitoring node attaching to steel beams, measuring microstrain via bonded foil gauges in outdoor substations (–40°C to +85°C). IC Role / Device Role / Timing Role: Analog front-end controller - supplies matched excitation current, acquires differential bridge voltage with 24-bit resolution, rejects 50/60 Hz noise, and transmits calibrated data via CAN bus. Use Value: Simultaneous 50/60 Hz rejection at 10 SPS ensures stable readings near power transformers; low-drift PGA (4 nV/°C) maintains accuracy across full temperature range. |
| Process Transmitter (4–20 mA) | High-Accuracy Temperature Logger |
|
Use Scenario: Loop-powered 4–20 mA transmitter for pressure sensing in oil & gas pipelines, requiring SIL-2 compliance and long-term calibration stability. IC Role / Device Role / Timing Role: Safety-aware sensor processor - runs IEC60730 diagnostics (RAM test, ADC disconnect check), converts analog input, modulates 4–20 mA output via 16-bit DAC, and communicates via HART over SCI. Use Value: Hardware-assisted safety functions reduce software validation scope; 16-bit DAC (±1 LSB DNL) ensures precise current loop control without trimming. |
Use Scenario: Battery-operated environmental logger recording soil temperature every 10 minutes for 5 years in remote agricultural fields (–40°C to +105°C). IC Role / Device Role / Timing Role: Ultra-low-power sensing node - wakes from software standby on LPT timeout, reads internal temperature sensor (±5°C), samples external PT100 via excitation sources, stores data in Data Flash, then returns to standby. Use Value: Software standby mode with active LPT consumes <1 µA; 8 KB Data Flash endurance (1M cycles) supports daily logging for >27 years. |
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 |
|---|---|---|---|
| R5F523E6BGNF#20 | Same package and core, but 5-V analog input range (vs. ±10 V); no HVAIN pins | Suitable for lower-output sensors (e.g., 10 mV/V bridges) where ±10-V range is unnecessary | Select when cost sensitivity outweighs need for direct high-output bridge interfacing |
| R5F523E5KGNF#20 | Same 10-V analog input and package, but 128 KB flash / 16 KB RAM (vs. 256 KB / 32 KB) | Targeted at simpler firmware with smaller code footprint and less data buffering requirement | Choose for cost-optimized designs where full 256 KB flash is unused and calibration data fits in 8 KB Data Flash |
Compared with R5F523E6KGNF#20, R5F523E6BGNF#20 trades ±10-V input capability for lower unit cost in mid-range sensor applications, while R5F523E5KGNF#20 reduces memory resources to meet budget constraints without sacrificing analog performance or thermal rating.
Availability
R5F523E6KGNF#20 is available at Aetrix Electronics and suitable for industrial weigh scales, strain gauge interfaces, and process transmitters requiring stable component supply, long-term lifecycle support, and guaranteed –40°C to +105°C operation.
Supply support for R5F523E6KGNF#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 markets.
The RX23E-B Group, including R5F523E6KGNF#20, was designed specifically for high-accuracy industrial sensing - integrating precision analog front-ends, safety features, and real-time processing in a single chip for weight, pressure, and temperature measurement systems.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6KGNF#20?
The R5F523E6KGNF#20 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable at lower resolution settings; at full 24-bit effective resolution, the optimal rate is 3.8 SPS with fourth-order sinc filtering. The device allows programmable data rates from 3.8 SPS to 125 kSPS using a 4-MHz modulator clock, enabling trade-offs between speed and noise rejection based on application needs.
Does R5F523E6KGNF#20 support ±10-V analog inputs, and how are they implemented?
Yes, R5F523E6KGNF#20 supports ±10-V differential analog inputs via dedicated HVAIN0 and HVAIN1 pins. These pins connect directly to the 24-bit delta-sigma ADC's input multiplexer and are electrically isolated from standard AIN pins. The ±10-V range is enabled by internal level-shifting circuitry and requires AVCC0 ≥ 4.5 V. No external resistive dividers or op-amps are needed, simplifying interface to high-output bridge sensors and industrial transducers.
What communication interfaces are available on R5F523E6KGNF#20 for industrial networking?
R5F523E6KGNF#20 integrates CAN 2.0B (RSCAN, 1 channel, up to 1 Mbps), six SCI channels (SCIg), one SCIh (LIN-capable), one I2C (RIICa, up to 400 kbps), and one RSPI (up to 16 Mbps). CAN is fully compliant with ISO11898-1 and supports message boxes and error handling required for industrial fieldbus use. All interfaces operate independently of CPU load via ELC and DTC, enabling deterministic real-time communication in distributed sensor networks.
How does R5F523E6KGNF#20 support IEC60730 Class B compliance?
R5F523E6KGNF#20 includes hardware-assisted IEC60730 Class B safety features: memory protection unit (MPU) for code/data isolation, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via data operation circuit (DOC), and ADC self-diagnostic functions (offset/gain error detection, input disconnect assist). These reduce software validation burden and enable certified functional safety implementations without external monitors.
What is the operating temperature range and package type of R5F523E6KGNF#20?
R5F523E6KGNF#20 is packaged in a 40-pin HWQFN (PWQN0040KD-A, 6 × 6 mm, 0.5 mm pitch) with exposed thermal pad and is rated for operation from –40°C to +105°C (G-version). This extended temperature grade ensures reliability in demanding industrial environments such as motor control cabinets, outdoor process instrumentation, and automotive under-hood sensing - with validated performance across the full range per Renesas datasheet R01DS0402EJ0100.
R5F523E6KGNF#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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E6KGNF#20 FAQ
1.How can I place an order for R5F523E6KGNF#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E6KGNF#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 R5F523E6KGNF#20 reliable?
The price and inventory of R5F523E6KGNF#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E6KGNF#20 is usually 5 days.
3.What payment methods are accepted for R5F523E6KGNF#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E6KGNF#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E6KGNF#20?
R5F523E6KGNF#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E6KGNF#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 R5F523E6KGNF#20?
For technical support, including R5F523E6KGNF#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E6KGNF#20 requirements.
6.How does Aetrix verify that R5F523E6KGNF#20 is sourced from the original manufacturer or authorized distributors?
All R5F523E6KGNF#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 R5F523E6KGNF#20 meets industry standards.
7.What is the process for return or replacement of R5F523E6KGNF#20?
All R5F523E6KGNF#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E6KGNF#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 R5F523E6KGNF#20 part is unused and in its original packaging.
Return procedure for R5F523E6KGNF#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F523E6KGNF#20 Tags
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