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Renesas R5F523E5LDBS#20
- Part No.:
- R5F523E5LDBS#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TFBGA
- Datasheet:
-
R5F523E5LDBS#20.pdf
- Description:
- 32BIT MCU RX23E-B 128K LFBGA100
- Quantity:
- Payment:
- Shipping:
Inventory:1,444
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Product details
Overview
R5F523E5LDBS#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), 125 kSPS max sampling rate, 2.5-V low-drift voltage reference (8 ppm/°C), and on-chip excitation current sources (50–1000 µA). It operates at 32 MHz across –40°C to +85°C and targets load cell, strain gauge, and RTD signal conditioning systems.
For engineers reviewing the R5F523E5LDBS#20 datasheet, R5F523E5LDBS#20 pinout, R5F523E5LDBS#20 application, or R5F523E5LDBS#20 equivalent, key selection criteria include its 10-V analog input range, integrated PGA with 11 nVRMS noise (gain = 128), simultaneous 50/60 Hz rejection at 10/54 SPS, CAN interface compliance with ISO11898-1, and support for IEC60730 safety diagnostics including A/D self-test and clock accuracy monitoring.
Technical Context
The R5F523E5LDBS#20 implements a dedicated analog front-end architecture centered on the DSADB module, which synchronizes modulator clock (fMOD = 4 MHz), digital filter configuration (four sinc filter options), and PGA gain per channel. Its ELC (Event Link Controller) enables autonomous ADC triggering and data transfer without CPU intervention, even during deep sleep modes.
It combines dual A/D subsystems: the 24-bit delta-sigma converter (DSADB) for high-resolution sensor signals and an 8-channel 12-bit SAR converter (S12ADE) for auxiliary measurements. The MCU's RXv2 core executes floating-point (IEEE754) and DSP instructions (e.g., 32-bit MAC) to perform real-time calibration, linearization, and sensor compensation directly on-chip.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture, 32 MHz max operation, 64 DMIPS performance |
| Flash / RAM / Data Flash | 128 KB on-chip flash (no-wait at 32 MHz), 16 KB SRAM, 8 KB data flash (1M erase/program cycles) |
| 24-bit Delta-Sigma ADC | 8 differential inputs, ±10-V HVAIN range, 125 kSPS max rate, 24-bit effective resolution at 3.8 SPS |
| PGA Performance | Rail-to-rail input, gain = 1–128, 11 nVRMS input-referred noise (gain = 128, 3.8 SPS), offset drift = 4 nV/°C |
| Voltage Reference | 2.5 V output, 8 ppm/°C drift (–40 to +85°C), ±10 mA load capability |
| Excitation Current Sources | Two independent channels, 50–1000 µA programmable output, ±0.2% matching, 5 ppm/°C drift matching |
| Communication Interfaces | CAN (1 ch, ISO11898-1, up to 1 Mbps), SCI (7 ch), I²C (1 ch, 400 kbps), RSPI (1 ch, 16 Mbps) |
Pinout & Package
Package: PTBG0100KD-A - 100-pin TFBGA, 5.5 mm × 5.5 mm, 0.5 mm pitch, –40°C to +85°C operating range.
| 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 precision |
| HVAIN0–HVAIN3 | Analog input | ±10-V tolerant high-voltage differential inputs for DSADB; enable direct connection to bridge sensors without external amplification |
| AVCC0 / AVSS0 | Analog power / ground | Dedicated analog domain supply; bias voltage generator outputs (AVCC0 + AVSS0)/2 for PGA reference |
| IEXC0 / IEXC1 | Excitation current output | Programmable current sources for RTD or 4-wire strain gauge excitation; matched output ensures ratiometric accuracy |
| VREFH / VREFL | ADC reference inputs | Accept external reference or use internal 2.5-V source; DSADB supports external reference for improved system-level accuracy |
| MTU0–MTU5 | Timer waveform I/O | Support complementary PWM, phase counting, and ADC trigger generation; POE2a controls output impedance during sleep |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 50/60 Hz rejection | Configurable at 10/54 SPS output data rates-enables stable weight measurement in noisy AC environments without external notch filters |
| IEC60730 safety assist functions | Integrated hardware support for RAM test (DOC), clock accuracy check (CAC), IWDT self-diagnostic, and A/D disconnect detection-reduces software certification effort |
| Background Operation (BGO) | Data flash programming/erasing proceeds concurrently with CPU execution-enables firmware updates without interrupting sensor acquisition |
| ELC-triggered autonomous operation | ADC conversion, DMA transfer, and timer actions initiated by hardware events-eliminates CPU polling and reduces active power in low-duty-cycle systems |
| Low-power timer (LPT) in software standby | 16-bit counter running from sub-clock or IWDT oscillator-provides wake-up timing without exiting full standby mode |
Applications
| Industrial Weighing Systems | Strain Gauge Signal Conditioners |
|---|---|
Use Scenario: Digital load cell interfaces in platform scales, hopper weighers, and batching systems requiring <±0.01% linearity over temperature. IC Role / Device Role / Timing Role: Primary signal processor: digitizes mV-level bridge outputs via DSADB, applies real-time offset/gain calibration, and transmits compensated weight data via CAN. Use Value: ±10-V HVAIN pins accept raw bridge signals; 11 nVRMS PGA noise ensures <100-µV RMS resolution; simultaneous 50/60 Hz rejection eliminates mains interference in factory environments. |
Use Scenario: Embedded signal conditioning modules for structural health monitoring using bonded foil or foil strain gauges. IC Role / Device Role / Timing Role: Analog front-end controller: supplies matched excitation currents (IEXC0/IEXC1), acquires differential strain voltage, performs temperature compensation using on-chip TEMPS sensor. Use Value: 0.2% current matching and 5 ppm/°C drift matching ensure ratiometric accuracy; 4 nV/°C PGA offset drift minimizes thermal zero shift; 24-bit resolution resolves sub-microstrain changes. |
| RTD-Based Temperature Transmitters | High-Accuracy Process Analyzers |
Use Scenario: DIN-rail-mounted 4–20 mA transmitters measuring Pt100/Pt1000 RTDs in HVAC, chemical, and food processing lines. IC Role / Device Role / Timing Role: Precision analog subsystem: drives RTD with programmable IEXC, measures voltage drop across precision reference resistor, computes resistance via sigma-delta conversion and polynomial fit. Use Value: Excitation current programmability (50–1000 µA) supports 2-/3-/4-wire configurations; internal 2.5-V reference (8 ppm/°C) enables stable ratiometric measurement; ±5°C TEMPS sensor aids cold-junction compensation. |
Use Scenario: Portable water quality analyzers measuring pH, ORP, and conductivity with multi-electrode arrays and auto-calibration routines. IC Role / Device Role / Timing Role: Multi-sensor fusion engine: acquires high-resolution analog inputs from multiple electrochemical sensors, runs real-time compensation algorithms (temperature, aging), and logs calibrated results to data flash. Use Value: Dual ADC subsystems allow concurrent high-res (DSADB) and high-speed (S12ADE) acquisition; 8 KB data flash with BGO enables secure firmware and calibration storage; CAN interface supports fieldbus integration. |
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 |
|---|---|---|---|
| R5F523E5NDBS#20 | Same package (PTBG0100KD-A), same 128 KB flash/16 KB RAM, but 5-V analog input range and 31.25 kSPS max DSADB rate | Targeted at lower-voltage sensor interfaces (e.g., 0–5 V pressure transducers) where 10-V range is unnecessary | Select when ±10-V HVAIN capability is not required and cost optimization is prioritized over maximum resolution at high data rates |
| R5F523E6LDBS#20 | Same package and analog specs (10-V HVAIN, 125 kSPS), but 256 KB flash/32 KB RAM and extended peripheral set (e.g., RTC, LCD driver) | Required for applications needing larger firmware footprint, calendar-based logging, or integrated display control | Choose when additional code space, real-time clock functionality, or LCD driving capability is essential alongside identical analog performance |
Compared with R5F523E5NDBS#20, the R5F523E5LDBS#20 delivers 2× higher DSADB sampling rate and ±10-V input tolerance critical for unamplified bridge sensors; versus R5F523E6LDBS#20, it offers identical analog precision at lower memory cost-ideal for fixed-function sensor nodes where RTC or LCD are unused.
Availability
R5F523E5LDBS#20 is available at Aetrix Electronics and suitable for industrial weighing systems, strain gauge conditioners, RTD transmitters, and process analyzers requiring stable component supply, long-term lifecycle support, and guaranteed –40°C to +85°C operation.
Supply support for R5F523E5LDBS#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 infrastructure markets.
The RX23E-B Group-including the R5F523E5LDBS#20-is designed specifically for high-accuracy sensor signal acquisition, integrating metrology-grade analog peripherals with safety-certifiable MCU features for industrial measurement equipment.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5LDBS#20?
The R5F523E5LDBS#20 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB) when operating with fMOD = 4 MHz. This rate is achievable with reduced resolution (e.g., 16-bit effective) and specific filter settings; at full 24-bit effective resolution, the practical maximum is 3.8 SPS. The device allows programmable trade-offs between speed, resolution, and noise performance per channel.
Does R5F523E5LDBS#20 support simultaneous 50 Hz and 60 Hz noise rejection?
Yes, the R5F523E5LDBS#20 supports simultaneous 50 Hz and 60 Hz rejection in its 24-bit delta-sigma ADC when configured for output data rates of 10 SPS or 54 SPS. This is implemented in hardware via sinc filter combinations and requires no firmware intervention-enabling robust operation in globally deployed equipment subject to mixed AC line frequencies.
What are the voltage and temperature specifications for R5F523E5LDBS#20?
The R5F523E5LDBS#20 operates from a single 1.8-V to 5.5-V VCC supply and supports AVCC0 at 4.5–5.5 V for optimal 12-bit ADC performance. Its specified operating ambient temperature range is –40°C to +85°C (D-version), validated across the full range for all analog and digital functions including DSADB, PGA, and voltage reference stability.
Can R5F523E5LDBS#20 drive a liquid crystal display (LCD)?
Yes, the R5F523E5LDBS#20 includes an integrated LCD controller/driver supporting up to 40 segments × 4 commons or 36 segments × 8 commons. This capability is enabled in the "L" variant (as indicated in the part number suffix), making it suitable for compact industrial HMI displays without requiring external display drivers.
How does the R5F523E5LDBS#20 support IEC60730 functional safety compliance?
The R5F523E5LDBS#20 provides hardware-assisted IEC60730 compliance features including RAM test support via the Data Operation Circuit (DOC), clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) self-test, A/D converter disconnect detection, and voltage monitor diagnostics. These reduce software validation burden and enable Class B safety certification for household and industrial appliances.
R5F523E5LDBS#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-TFBGA
- 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, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 58
- 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5LDBS#20 FAQ
1.How can I place an order for R5F523E5LDBS#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5LDBS#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 R5F523E5LDBS#20 reliable?
The price and inventory of R5F523E5LDBS#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5LDBS#20 is usually 5 days.
3.What payment methods are accepted for R5F523E5LDBS#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5LDBS#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5LDBS#20?
R5F523E5LDBS#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5LDBS#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 R5F523E5LDBS#20?
For technical support, including R5F523E5LDBS#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5LDBS#20 requirements.
6.How does Aetrix verify that R5F523E5LDBS#20 is sourced from the original manufacturer or authorized distributors?
All R5F523E5LDBS#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 R5F523E5LDBS#20 meets industry standards.
7.What is the process for return or replacement of R5F523E5LDBS#20?
All R5F523E5LDBS#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5LDBS#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 R5F523E5LDBS#20 part is unused and in its original packaging.
Return procedure for R5F523E5LDBS#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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