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Renesas R5F523E6KGNF#00
- Part No.:
- R5F523E6KGNF#00
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E6KGNF#00.pdf
- Description:
- 32BIT MCU RX23E-B 256K HWQFN40 -
- Quantity:
- Payment:
- Shipping:
Inventory:3,145
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Product details
Overview
R5F523E6KGNF#00 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor interfaces and metering systems. It integrates a 24-bit delta-sigma ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 2.5-V low-drift voltage reference (8 ppm/°C), dual excitation current sources (50–1000 µA), and CAN 2.0B interface - all operating at up to 32 MHz on a single 1.8–5.5-V supply.
For engineers reviewing the R5F523E6KGNF#00 datasheet, R5F523E6KGNF#00 pinout, R5F523E6KGNF#00 application, or R5F523E6KGNF#00 equivalent, this MCU delivers deterministic real-time control, IEC 60730-compliant self-test support, and hardware-accelerated signal processing for load cell, strain gauge, and RTD-based measurement systems requiring <100 nV RMS noise and <5 ppm/°C gain drift.
Technical Context
The R5F523E6KGNF#00 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 5-stage Harvard pipeline, and memory protection unit (MPU) - enabling deterministic execution of floating-point sensor compensation algorithms. Its analog subsystem centers on the DSADB module, synchronized to PCLKC (≤16 MHz), with fourth- and fifth-order sinc digital filters supporting simultaneous 50/60 Hz rejection at 10–54 SPS.
Real-time coordination is handled by the Event Link Controller (ELC), which triggers ADC conversions, PWM updates, and D/A output without CPU intervention - critical for synchronized multi-channel acquisition in isolated industrial I/O modules. The device uses PWQN0040KD-A (40-pin HWQFN, 6 × 6 mm, 0.5 mm pitch) packaging with 13 GPIOs, 2 HVAIN pins rated for ±10 V, and dedicated analog supply pins (AVCC0/AVSS0).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC with 64 DMIPS @ 32 MHz, IEEE 754 FPU, and MPU for functional safety partitioning |
| Delta-Sigma ADC | 24-bit resolution, ±10-V input range via HVAIN pins, 125 kSPS max sampling rate, 4 sinc filter configurations |
| PGA | Rail-to-rail programmable gain instrumentation amplifier (×1 to ×128), 11 nVRMS noise @ gain=128, 4 nV/°C offset drift |
| Voltage Reference | 2.5 V ±0.5%, 8 ppm/°C drift over –40 to +105°C, ±10 mA output current for external circuit biasing |
| Excitation Sources | Two matched current sources (50–1000 µA), ±0.2% matching, 5 ppm/°C drift matching for precision bridge sensing |
| Communication | CAN 2.0B (1 Mbps), 6× SCI, 1× I²C (400 kbps), 1× RSPI (16 Mbps), no LCD controller (K variant) |
| Memory | 256 KB flash (no wait states @ 32 MHz), 32 KB SRAM, 8 KB data flash (1M erase cycles) |
Pinout & Package
Packaged in PWQN0040KD-A: 40-pin HWQFN, 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad. Designed for compact industrial sensor nodes with space-constrained PCB layouts and thermal management requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core power supply | 1.8–5.5 V digital supply; powers CPU, peripherals, and I/O logic |
| AVCC0 / AVSS0 | Analog power domain | 4.5–5.5 V analog supply (or 1.8–5.5 V if only S12AD active); defines DSADB reference and PGA headroom |
| HVAIN0 / HVAIN1 | High-voltage analog input | ±10-V differential input pins; enable direct connection to unconditioned load cells without external attenuators |
| IEXC0 / IEXC1 | Excitation current outputs | Matched current sources for 4-wire RTD or Wheatstone bridge biasing; programmable in 6 discrete steps |
| VREFH / VREFL | Delta-sigma ADC reference | Accepts internal 2.5 V reference or external reference up to AVCC0; sets full-scale range for DSADB |
| TXD0 / RXD0 | SCI0 serial interface | Asynchronous UART interface for host communication or debug logging; supports bit-rate modulation for noise immunity |
| CAN_TX / CAN_RX | CAN physical layer interface | Differential pair compliant with ISO 11898-1; requires external transceiver for bus coupling |
| RESET# | Active-low reset input | Asynchronous reset pin; accepts external reset signals or push-button inputs for system recovery |
Key Features
| Feature | Design Value |
|---|---|
| IEC 60730 Self-Diagnostic Support | Hardware-assisted RAM test (via DOC), A/D converter disconnect detection, clock accuracy monitoring (CAC), and IWDT fault reporting |
| Synchronized Multi-Module Triggering | ELC enables autonomous ADC conversion start, MTU2a PWM update, and R16DA output update on shared event signals - eliminating CPU latency |
| Low-Power Analog Operation | LPT runs during software standby mode using sub-clock oscillator; enables periodic wake-up for battery-powered sensor polling |
| High-Voltage Input Protection | HVAIN pins tolerate ±10 V continuously; integrated fault detectors flag overvoltage, reference disconnect, and excitation source open-circuit conditions |
| Programmable Data Rate Flexibility | DSADB sampling rate adjustable from 3.8 SPS to 125 kSPS (fMOD = 4 MHz); supports both ultra-low-noise slow scans and fast transient capture |
Applications
| Industrial Load Cell Interface | Smart Electricity Metering |
|---|---|
Use Scenario: High-accuracy weight measurement in platform scales and hopper load cells with temperature-compensated bridge sensors. IC Role / Device Role / Timing Role: Primary signal conditioner and controller; performs PGA gain selection, DSADB oversampling, floating-point linearization, and CAN-based data upload. Use Value: Achieves <0.01% full-scale accuracy over –40 to +105°C using on-chip 2.5-V reference and matched excitation currents - eliminating external precision references and trimming components. |
Use Scenario: Revenue-grade energy metering in DIN-rail mounted smart meters with polyphase current/voltage sensing. IC Role / Device Role / Timing Role: Metrology engine; synchronizes 24-bit ADC sampling across multiple CT/PT channels using ELC-triggered conversions and computes RMS, harmonics, and tariff values in real time. Use Value: Simultaneous 50/60 Hz rejection at 10–54 SPS enables accurate billing under variable grid frequencies without firmware recalibration. |
| Isolated Process Transmitter | High-Precision RTD Temperature Module |
Use Scenario: 4–20 mA loop-powered field transmitter for pressure or flow sensing with galvanic isolation. IC Role / Device Role / Timing Role: Sensor front-end and loop controller; conditions bridge output, digitizes with DSADB, executes calibration polynomials, and drives DAC+V/I converter. Use Value: Integrated 16-bit R16DA and ±10-V HVAIN support direct 4–20 mA output stage design with <1 LSB INL - reducing BOM count by two external DACs and op-amps. |
Use Scenario: Three-wire RTD interface in HVAC controllers and industrial PLC analog input modules. IC Role / Device Role / Timing Role: Precision resistance-to-digital converter; applies matched excitation currents to RTD, measures voltage drop with DSADB, compensates for lead resistance via software. Use Value: Dual IEXC sources with ±0.2% matching and 5 ppm/°C drift matching ensure <0.1°C temperature accuracy over full industrial range without factory calibration. |
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 |
|---|---|---|---|
| R5F523E6KDNF#00 | D-version (–40 to +85°C), same package and analog specs, lower temperature grade | Suitable for commercial/indoor equipment without extended thermal requirements | Select when ambient operating temperature does not exceed +85°C and cost sensitivity favors D-grade qualification |
| ADuCM3029BBCZ | ARM Cortex-M3 core, 12-bit SAR ADC (not delta-sigma), integrated RF transceiver, no ±10-V inputs | Better for wireless sensor nodes needing BLE/Mesh connectivity but insufficient for metrology-grade 24-bit acquisition | Choose only if wireless telemetry is mandatory and 24-bit DC accuracy is secondary to RF integration |
Compared with R5F523E6KGNF#00, the D-version R5F523E6KDNF#00 offers identical analog performance and pinout at lower cost for non-extended-temperature use, while ADuCM3029BBCZ trades metrology precision for wireless capability - making R5F523E6KGNF#00 the sole choice for applications demanding ±10-V input, 24-bit delta-sigma resolution, and IEC 60730 compliance in a 40-pin footprint.
Availability
R5F523E6KGNF#00 is available at Aetrix Electronics and suitable for industrial sensor interfaces, smart metering systems, and isolated process transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F523E6KGNF#00 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-B Group - including R5F523E6KGNF#00 - was designed specifically for high-accuracy analog measurement in industrial automation, energy metering, and sensor conditioning applications where metrology-grade signal integrity and functional safety certification are required.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6KGNF#00?
The R5F523E6KGNF#00 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB) when the modulator clock is set to 4 MHz. This rate is achievable with reduced digital filter order and is validated for applications requiring fast transient response - such as motor current monitoring - while maintaining effective resolution above 20 bits.
Does R5F523E6KGNF#00 include an LCD controller?
No, R5F523E6KGNF#00 does not include an LCD controller. The "K" suffix in the part number explicitly denotes the variant without LCD driver functionality, as confirmed in Figure 1.1 of the datasheet. This omission reduces die size and power consumption, making R5F523E6KGNF#00 optimal for sensor nodes where display output is handled externally or omitted entirely.
What analog input voltage range is supported by the HVAIN pins on R5F523E6KGNF#00?
The HVAIN0 and HVAIN1 pins on R5F523E6KGNF#00 support a true ±10-V differential input range, enabling direct connection to unconditioned industrial sensors such as load cells and strain gauges without external attenuation or level-shifting circuitry. This specification is guaranteed across the full –40°C to +105°C operating temperature range.
Can R5F523E6KGNF#00 operate from a single 3.3-V supply?
Yes, R5F523E6KGNF#00 operates from a single 1.8–5.5-V VCC supply. At 3.3 V, it supports full 32-MHz operation per the power supply vs. frequency table on page 6 of the datasheet. The analog section (AVCC0) must be supplied separately at 4.5–5.5 V for full DSADB performance, though S12AD operation is permitted down to 1.8 V.
How many excitation current sources does R5F523E6KGNF#00 integrate, and what are their key specifications?
R5F523E6KGNF#00 integrates two fully matched excitation current sources (IEXC0 and IEXC1), each programmable from 50 µA to 1000 µA in six discrete steps. They exhibit ±0.2% matching and 5 ppm/°C drift matching - critical for 3- and 4-wire RTD measurements where current source mismatch directly impacts temperature accuracy.
R5F523E6KGNF#00 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:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E6KGNF#00 FAQ
1.How can I place an order for R5F523E6KGNF#00 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E6KGNF#00 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#00 reliable?
The price and inventory of R5F523E6KGNF#00 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E6KGNF#00 is usually 5 days.
3.What payment methods are accepted for R5F523E6KGNF#00?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E6KGNF#00 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E6KGNF#00?
R5F523E6KGNF#00 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E6KGNF#00 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#00?
For technical support, including R5F523E6KGNF#00 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E6KGNF#00 requirements.
6.How does Aetrix verify that R5F523E6KGNF#00 is sourced from the original manufacturer or authorized distributors?
All R5F523E6KGNF#00 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#00 meets industry standards.
7.What is the process for return or replacement of R5F523E6KGNF#00?
All R5F523E6KGNF#00 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E6KGNF#00, 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#00 part is unused and in its original packaging.
Return procedure for R5F523E6KGNF#00:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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