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Renesas R5F523E5KGFM#50
- Part No.:
- R5F523E5KGFM#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F523E5KGFM#50.pdf
- Description:
- 32BIT MCU RX23E-B 128K LFQFP64 T
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F523E5KGFM#50 from Renesas is a 32-bit RXv2 core MCU 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 CAN 2.0B interface. Designed for weight scales, pressure transmitters, and strain-gauge systems operating from –40°C to +105°C.
For engineers reviewing the R5F523E5KGFM#50 datasheet, R5F523E5KGFM#50 pinout, R5F523E5KGFM#50 application, or R5F523E5KGFM#50 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 diagnostics.
Technical Context
The R5F523E5KGFM#50 implements a dedicated analog front-end (AFEA) with dual excitation current sources, bias voltage generator, and HVAIN pins rated for ±10 V - enabling direct connection to high-voltage bridge sensors without external signal conditioning. Its DSADB module operates with PCLKC up to 16 MHz and supports four sinc filter configurations for simultaneous 50/60 Hz rejection at 10/54 SPS.
It features an event link controller (ELC) that enables autonomous ADC conversion triggering and data transfer via DTC or DMAC without CPU intervention, while the MPU and built-in FPU (IEEE 754 single-precision) support deterministic real-time control and floating-point sensor linearization in safety-critical embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture, 32 MHz max, 64 DMIPS - enables real-time digital filtering and calibration algorithms. |
| Delta-Sigma ADC | 24-bit resolution, 125 kSPS max, ±10-V input range - supports direct interface to unconditioned load cells and RTD bridges. |
| PGA Gain Range | 1× to 128×, rail-to-rail input, 11 nVRMS noise (G=128) - eliminates need for external preamplifiers in precision weigh-scale designs. |
| Voltage Reference | 2.5 V output, 8 ppm/°C drift (–40 to +85°C), ±10 mA drive - provides stable reference for both ADC and DAC with minimal external buffering. |
| Excitation Current Sources | Two channels, 50–1000 µA programmable, ±0.2% matching, 5 ppm/°C drift - enables precise ratiometric measurements with 4-wire RTDs or strain gauges. |
| Operating Temp | –40°C to +105°C (G-version) - qualified for industrial environments including motor control cabinets and process analyzers. |
| Flash / RAM | 128 KB code flash (no wait states at 32 MHz), 16 KB SRAM - sufficient for IEC60730 self-test routines and sensor fusion firmware. |
| Communication | CAN 2.0B (1 Mbps), 6× SCI, 1× RIIC, 1× RSPI - supports fieldbus connectivity and multi-sensor daisy-chaining in distributed control systems. |
Pinout & Package
Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm, 0.5 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, AVCC0, AVSS0 | Power supply rails | Dual-domain supply: 1.8–5.5 V digital core; 4.5–5.5 V analog domain ensures stable ADC/DAC operation and ±10-V input compliance. |
| HVAIN0–HVAIN3 | Analog input (high-voltage) | ±10-V tolerant differential inputs - directly accept outputs from Wheatstone bridges without attenuation or level-shifting. |
| IEXC0, IEXC1 | Excitation current outputs | Programmable constant-current sources for 2-, 3-, or 4-wire RTD/strain gauge excitation with matched drift performance. |
| VREFH, VREFL | ADC reference inputs | Accept external reference or use internal 2.5 V source - enables ratiometric measurement with excitation current sources. |
| MTU0–MTU5 | PWM/timer output pins | Support complementary PWM generation for motor control or isolated gate driving - synchronized with ADC conversion triggers via ELC. |
| TXD0/RXD0, CAN_TX/CAN_RX | SCI0 and CAN physical layer | Dedicated UART and CAN transceiver pins - enable local HMI communication and fieldbus integration in industrial nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated AFE with ±10-V HVAIN | Eliminates external op-amp stages and level shifters for bridge sensor interfaces, reducing BOM cost and board area by ≥30%. |
| Simultaneous 50/60 Hz rejection | Configurable sinc filters suppress mains interference at 10/54 SPS - critical for stable readings in factory-floor environments. |
| IEC60730 diagnostic assist | Hardware-accelerated RAM test (DOC), ADC disconnect detection, and clock accuracy monitoring reduce functional safety certification effort. |
| ELC-triggered autonomous operation | ADC conversion, DMA transfer, and GPIO toggling execute without CPU wake-up - extends software standby mode battery life in portable instruments. |
| Low-drift PGA (4 nV/°C offset drift) | Maintains measurement stability across temperature gradients in unheated enclosures - essential for Class III weighing equipment. |
Applications
| Industrial Weigh Scales | Pressure Transmitter Modules |
|---|---|
Use Scenario: High-accuracy platform scales and hopper load cells in food processing plants requiring Class III certification. IC Role / Device Role / Timing Role: Primary signal acquisition and digital compensation unit - digitizes mV-level bridge outputs, applies temperature-compensated linearization, and transmits calibrated weight data over CAN. Use Value: ±10-V HVAIN and 24-bit effective resolution at 3.8 SPS deliver <0.001% full-scale repeatability without external amplification. | Use Scenario: Smart 4–20 mA pressure transmitters for HVAC and water treatment systems with HART protocol support. IC Role / Device Role / Timing Role: Analog front-end controller - conditions piezoresistive sensor signals, generates excitation current, performs self-calibration, and drives 4–20 mA loop via integrated DAC and current sink. Use Value: Matched 50–1000 µA excitation sources and 16-bit DAC enable ratiometric measurement and loop current control with <0.1% total error. |
| Strain-Gauge Based Torque Sensors | RTD-Based Temperature Transmitters |
Use Scenario: Rotary torque sensors in electric power steering (EPS) and industrial robotic joints requiring high SNR and EMC robustness. IC Role / Device Role / Timing Role: Precision analog acquisition node - acquires differential bridge outputs, rejects common-mode noise via sinc filtering, and synchronizes sampling with motor commutation events via ELC. Use Value: 125 kSPS delta-sigma sampling and 11 nVRMS PGA noise allow real-time torque estimation with <10 µrad resolution at 1 kHz bandwidth. | Use Scenario: DIN-rail mounted temperature transmitters for furnace monitoring and chemical reactor control with Pt100/Pt1000 inputs. IC Role / Device Role / Timing Role: Sensor interface and signal conditioner - supplies precision excitation current, measures 4-wire RTD resistance, compensates for lead-wire resistance, and outputs calibrated temperature over RS485. Use Value: Dual excitation sources with ±0.2% matching and 5 ppm/°C drift matching ensure <0.1°C accuracy over –40 to +105°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision analog measurement applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F523E5JGFN | 80-pin LFQFP, includes LCD controller (36 SEG × 8 COM), same 128 KB flash/16 KB RAM but no ±10-V HVAIN - limited to ≤5-V analog inputs. | Suitable for panel-mounted instruments with local display; not viable for ±10-V bridge sensors. | Select R5F523E5JGFN only when LCD integration is required and analog input range is ≤5 V. |
| R5F523E6KGFM | Same 64-pin LFQFP package, 256 KB flash/32 KB RAM, identical analog specs (±10-V HVAIN, 125 kSPS, dual IEXC), G-temp grade. | Enables larger firmware for advanced diagnostics or multi-sensor fusion without changing PCB layout. | Choose R5F523E6KGFM when future firmware expansion or enhanced safety routines require additional memory headroom. |
Compared with R5F523E5JGFN, R5F523E5KGFM#50 delivers higher analog input voltage tolerance and eliminates display overhead; versus R5F523E6KGFM, it trades flash/RAM capacity for lower cost and power in fixed-function sensor nodes where memory headroom is not constrained.
Availability
R5F523E5KGFM#50 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, strain-gauge torque sensors, and RTD-based temperature transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F523E5KGFM#50 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.
The RX23E-B Group is designed specifically for high-accuracy sensor signal acquisition in industrial automation - integrating precision analog front-ends, safety diagnostics, and real-time processing to replace discrete signal chains in smart transmitters and measurement instruments.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5KGFM#50?
The R5F523E5KGFM#50 supports a maximum delta-sigma ADC sampling rate of 125 kSPS at 24-bit resolution. This rate is achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. At lower data rates (e.g., 3.8 SPS), effective resolution reaches 24 bits with simultaneous 50/60 Hz rejection - a key capability for industrial noise environments.
Does R5F523E5KGFM#50 support ±10-V analog inputs, and which pins are rated for this voltage?
Yes, R5F523E5KGFM#50 supports ±10-V differential analog inputs via dedicated HVAIN0–HVAIN3 pins. These pins are explicitly rated for ±10 V and connect directly to the internal 24-bit delta-sigma ADC's analog multiplexer. No external level-shifting circuitry is required, enabling direct interface with unconditioned Wheatstone bridge sensors.
What are the excitation current source specifications for RTD or strain-gauge measurement using R5F523E5KGFM#50?
R5F523E5KGFM#50 integrates two independent excitation current sources (IEXC0/IEXC1) with programmable output from 50 µA to 1000 µA in six discrete steps. Matching is ±0.2% and drift matching is 5 ppm/°C - ensuring accurate ratiometric measurements in 3- or 4-wire RTD configurations without external current references.
Is the R5F523E5KGFM#50 qualified for operation at +105°C ambient temperature?
Yes, R5F523E5KGFM#50 is the G-version part, specified for operation from –40°C to +105°C ambient temperature. This qualification covers all integrated peripherals including the 24-bit delta-sigma ADC, PGA, voltage reference, and CAN interface - making it suitable for under-hood automotive sensors or industrial control cabinets without forced cooling.
Does R5F523E5KGFM#50 include hardware support for IEC60730 functional safety compliance?
Yes, R5F523E5KGFM#50 includes multiple hardware-assisted IEC60730 functions: RAM test support via Data Operation Circuit (DOC), ADC input disconnect detection, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, and voltage detector (VDET) for analog supply monitoring - reducing software certification burden for Class B safety applications.
R5F523E5KGFM#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RX23E-B
- Packaging:
- Tape & Reel (TR)
- 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:
- 30
- 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 8x12b SAR, 8x24b Sigma-Delta; D/A 1x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5KGFM#50 FAQ
1.How can I place an order for R5F523E5KGFM#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5KGFM#50 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 R5F523E5KGFM#50 reliable?
The price and inventory of R5F523E5KGFM#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5KGFM#50 is usually 5 days.
3.What payment methods are accepted for R5F523E5KGFM#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5KGFM#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5KGFM#50?
R5F523E5KGFM#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5KGFM#50 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 R5F523E5KGFM#50?
For technical support, including R5F523E5KGFM#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5KGFM#50 requirements.
6.How does Aetrix verify that R5F523E5KGFM#50 is sourced from the original manufacturer or authorized distributors?
All R5F523E5KGFM#50 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 R5F523E5KGFM#50 meets industry standards.
7.What is the process for return or replacement of R5F523E5KGFM#50?
All R5F523E5KGFM#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5KGFM#50, 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 R5F523E5KGFM#50 part is unused and in its original packaging.
Return procedure for R5F523E5KGFM#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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