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Renesas R5F523E5KGNF#20
- Part No.:
- R5F523E5KGNF#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E5KGNF#20.pdf
- Description:
- 32BIT MCU RX23E-B 128K HWQFN40 -
- Quantity:
- Payment:
- Shipping:
Inventory:3,711
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Product details
Overview
R5F523E5KGNF#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), 128 KB on-chip flash, 16 KB SRAM, and one CAN channel compliant to ISO11898-1 at up to 1 Mbps - all operating at 32 MHz.
For engineers reviewing the R5F523E5KGNF#20 datasheet, R5F523E5KGNF#20 pinout, R5F523E5KGNF#20 application, or R5F523E5KGNF#20 equivalent, key selection criteria include its 10-V analog input range, 125 kSPS delta-sigma sampling rate, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and support for IEC60730 safety compliance functions.
Technical Context
The R5F523E5KGNF#20 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @ 32 MHz, and memory protection unit (MPU) - enabling deterministic real-time control of sensor signal chains. Its analog subsystem centers on the DSADB module, synchronized to PCLKC (≤16 MHz), with fourth- and fifth-order sinc digital filters and simultaneous 50/60 Hz rejection at 10/54 SPS.
Power management includes three low-power modes (sleep, deep sleep, software standby), a low-power timer (LPT) running off the 32.768-kHz sub-clock, and independent watchdog timer (IWDT) driven by a dedicated 15-kHz on-chip oscillator - supporting fail-safe operation in battery-backed or energy-constrained industrial nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture with 5-stage pipeline, 64 DMIPS @ 32 MHz |
| Max Operating Frequency | 32 MHz - enables full-speed zero-wait-state access to 128 KB flash and 16 KB SRAM |
| Delta-Sigma ADC | 24-bit resolution, ±10-V input range via HVAIN pins, 125 kSPS max sampling rate |
| PGA Gain Range | 1× to 128× - supports direct interface to low-output sensors (e.g., strain gauges, RTDs) |
| Voltage Reference | 2.5 V ±0.5%, 8 ppm/°C drift - stable reference for precision ADC/DAC without external components |
| Excitation Current Sources | Two channels, 50–1000 µA programmable in 6 steps, matching ±0.2% - enables ratiometric bridge measurements |
| CAN Interface | One ISO11898-1-compliant channel, 1 Mbps data rate - suitable for industrial fieldbus communication |
Pinout & Package
Packaged in a 40-pin HWQFN (PWQN0040KD-A), 6 × 6 mm, 0.5 mm pitch, with exposed thermal pad. Pinout validated per Renesas R01DS0402EJ0100 Rev.1.00, Table 1.4–1.6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Core power supply / ground | 1.8–5.5 V single-supply operation; decoupling required per datasheet layout guidelines |
| AVCC0 / AVSS0 | Analog power / ground | 4.5–5.5 V analog domain; separates noise-sensitive analog circuitry from digital switching |
| HVAIN0–HVAIN1 | High-voltage analog inputs | ±10-V differential input capability - eliminates need for external level-shifting amplifiers |
| IEXC0 / IEXC1 | Excitation current outputs | Programmable current sources for 2-/3-/4-wire RTD or bridge sensor biasing |
| DSAD_VREFH / DSAD_VREFL | Delta-sigma ADC reference | Accepts internal 2.5 V ref or external reference - enables flexible ratiometric or absolute measurement |
| CAN_TX / CAN_RX | CAN physical layer interface | Differential signaling pair compliant to ISO11898-1; requires external termination and common-mode choke |
| XTAL / EXTAL | Main clock oscillator terminals | Supports 1–20 MHz crystal; enables precise timing for ADC sampling and communication baud rates |
| RES# | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with open-drain reset supervisors |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Safety Support | Integrated self-test assist for ADC, IWDT, clock accuracy (CAC), RAM (DOC), and voltage monitoring - reduces external safety component count |
| Simultaneous 50/60 Hz Rejection | Configurable at 10/54 SPS output data rate - eliminates mains interference in weigh scales and process transmitters |
| Background Operation (BGO) | 8 KB data flash supports concurrent read/write - enables firmware updates without halting real-time sensor acquisition |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining (e.g., timer → ADC start → DMA transfer) - reduces CPU load and interrupt latency |
| Rail-to-Rail PGA Input | Input common-mode range extends from AVSS0 to AVCC0 - accommodates wide dynamic range sensor outputs without external biasing |
Applications
| Weigh Scale Systems | Industrial Temperature Transmitters |
|---|---|
|
Use Scenario: High-resolution weight measurement in platform scales and hopper load cells using 350-Ω or 1-kΩ strain gauge bridges. IC Role / Device Role / Timing Role: Primary signal conditioner and controller - digitizes mV-level bridge outputs via 24-bit DSAD, applies PGA gain, performs linearization, and communicates via CAN. Use Value: ±10-V HVAIN pins accept raw bridge outputs directly; excitation current sources enable 4-wire ratiometric measurement; 125 kSPS supports fast settling and oversampling for <1-µV noise floor. |
Use Scenario: DIN-rail-mounted RTD/thermocouple transmitter converting analog temperature signals to 4–20 mA or digital CAN output. IC Role / Device Role / Timing Role: Analog front-end + MCU - conditions sensor signals, executes calibration algorithms, manages HART/CAN protocol stack, and drives analog output stage. Use Value: Integrated 50–1000 µA excitation sources match RTD requirements; low-drift 2.5 V reference ensures <0.1°C accuracy over –40 to +105°C; IEC60730 assist simplifies functional safety certification. |
| Energy Metering Subsystems | Process Pressure Transmitters |
|
Use Scenario: Precision voltage/current sensing in polyphase electricity meters, requiring metrology-grade ADC performance and tamper detection. IC Role / Device Role / Timing Role: Metrology co-processor - acquires isolated voltage/current samples, computes RMS, harmonics, and power quality metrics. Use Value: 24-bit DSAD with sinc filtering achieves >110 dB SNR; simultaneous 50/60 Hz rejection prevents grid-frequency aliasing; CRC and DOC support secure firmware integrity checks. |
Use Scenario: Smart pressure sensor for oil & gas or chemical processing, delivering calibrated digital output over industrial CAN networks. IC Role / Device Role / Timing Role: Sensor fusion node - interfaces piezoresistive or capacitive pressure elements, compensates for temperature drift, and formats CAN frames with diagnostic status. Use Value: PGA gain programmability adapts to multiple sensor sensitivities; internal temperature sensor (±5°C) enables on-chip compensation; low-power standby mode extends battery life in wireless variants. |
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 |
|---|---|---|---|
| R5F523E5KDFM | 64-pin LFQFP (PLQP0064KB-C); adds LCD controller (36 SEG × 8 COM), removes CAN | Suitable for local HMI-based sensor displays; not CAN-capable | Select when display integration is prioritized over fieldbus connectivity |
| R5F523E5KGNF#30 | Identical silicon and package; differs only in tape-and-reel packaging (#30 vs #20 tray) | No functional difference - same electrical, thermal, and reliability specs | Choose #20 for prototyping and low-volume evaluation; #30 for automated SMT production |
Compared with R5F523E5KGNF#20, R5F523E5KDFM trades CAN for LCD support - limiting fieldbus use but enabling local visualization; R5F523E5KGNF#30 offers identical performance in reel format for volume manufacturing, eliminating any PCB or schematic change.
Availability
R5F523E5KGNF#20 is available at Aetrix Electronics and suitable for industrial sensor transmitters, weigh scale controllers, and energy metering subsystems requiring stable component supply across extended temperature ranges (–40°C to +105°C) and long product lifecycles.
Supply support for R5F523E5KGNF#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-B Group - including R5F523E5KGNF#20 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, featuring integrated 24-bit delta-sigma ADCs, excitation sources, and functional safety support.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5KGNF#20?
The R5F523E5KGNF#20 supports a maximum delta-sigma ADC sampling rate of 125 kSPS, achievable at lower resolution settings and with appropriate modulator clock configuration (fMOD = 4 MHz). At this rate, effective resolution decreases; for 24-bit effective resolution, the datasheet specifies 3.8 SPS. The device allows programmable trade-offs between speed and resolution via digital filter selection and oversampling ratio.
Does R5F523E5KGNF#20 support IEC60730 Class B compliance out of the box?
The R5F523E5KGNF#20 includes hardware-assisted self-test features required for IEC60730 Class B - including ADC offset/gain calibration, IWDT and clock accuracy monitoring (CAC), RAM test support via DOC, and analog input disconnect detection. However, full compliance requires proper software implementation and system-level validation; Renesas provides application notes and safety libraries to accelerate certification.
What analog input voltage range does R5F523E5KGNF#20 support on its HVAIN pins?
The R5F523E5KGNF#20 supports a ±10-V differential input range on its HVAIN0 and HVAIN1 pins, enabled by internal high-voltage input circuitry. This eliminates the need for external signal conditioning when interfacing with industrial sensors such as load cells or pressure transducers that output mV/V-level signals referenced to remote grounds.
Can R5F523E5KGNF#20 operate from a single 3.3-V supply?
Yes, the R5F523E5KGNF#20 operates from a single 1.8-V to 5.5-V supply. At 3.3 V, it supports the full 32-MHz maximum operating frequency with zero-wait-state access to flash and SRAM. The analog domain (AVCC0) requires 4.5–5.5 V for full 24-bit ADC performance; however, the 12-bit S12AD can operate down to 1.8 V if only basic analog acquisition is needed.
Is the CAN interface on R5F523E5KGNF#20 compatible with CAN FD?
No, the R5F523E5KGNF#20 implements a classical CAN 2.0B controller compliant with ISO11898-1, supporting data rates up to 1 Mbps. It does not support CAN FD features such as flexible data-rate or extended payload length. For CAN FD applications, designers should consider Renesas' RA6T2 or RX72M families instead.
R5F523E5KGNF#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:
- 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 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:
R5F523E5KGNF#20 FAQ
1.How can I place an order for R5F523E5KGNF#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5KGNF#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 R5F523E5KGNF#20 reliable?
The price and inventory of R5F523E5KGNF#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5KGNF#20 is usually 5 days.
3.What payment methods are accepted for R5F523E5KGNF#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5KGNF#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5KGNF#20?
R5F523E5KGNF#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5KGNF#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 R5F523E5KGNF#20?
For technical support, including R5F523E5KGNF#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5KGNF#20 requirements.
6.How does Aetrix verify that R5F523E5KGNF#20 is sourced from the original manufacturer or authorized distributors?
All R5F523E5KGNF#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 R5F523E5KGNF#20 meets industry standards.
7.What is the process for return or replacement of R5F523E5KGNF#20?
All R5F523E5KGNF#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5KGNF#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 R5F523E5KGNF#20 part is unused and in its original packaging.
Return procedure for R5F523E5KGNF#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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