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Renesas R5F523E5LDFP#50
- Part No.:
- R5F523E5LDFP#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F523E5LDFP#50.pdf
- Description:
- 32BIT MCU RX23E-B 128K LFQFP100
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
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Product details
Overview
R5F523E5LDFP#50 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 ISO 11898-1 at up to 1 Mbps - deployed in smart transmitters, load cells, and precision weighing systems.
For engineers reviewing the R5F523E5LDFP#50 datasheet, R5F523E5LDFP#50 pinout, R5F523E5LDFP#50 application, or R5F523E5LDFP#50 equivalent, key selection criteria include its 125 kSPS delta-sigma sampling rate, ±10-V HVAIN pin support, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and software standby operation with low-power timer.
Technical Context
The R5F523E5LDFP#50 implements the RXv2 CPU core running at up to 32 MHz (64 DMIPS), with IEEE 754-compliant single-precision FPU and memory protection unit (MPU). Its analog subsystem centers on the DSADB module - a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and offset/gain error calibration.
Digital integration includes ELC-driven event-triggered peripheral operation (e.g., ADC start via MTU), four-channel DMAC, and dual-clock domain synchronization: PCLKC (≤16 MHz) for DSADB, PCLKD (≤32 MHz) for S12AD, and ICLK (≤32 MHz) for CPU execution - enabling deterministic real-time response in closed-loop sensor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture, 32 MHz max, 64 DMIPS - enables real-time signal processing without external DSP. |
| Delta-Sigma ADC | 24-bit resolution, 125 kSPS max, ±10-V input range on HVAIN pins - supports direct interface to strain gauges and RTDs without external signal conditioning. |
| PGA | Rail-to-rail programmable gain instrumentation amplifier (×1 to ×128), 11 nVRMS noise at gain=128 - preserves SNR in low-level sensor signal amplification. |
| Voltage Reference | 2.5 V output, 8 ppm/°C drift over –40°C to +85°C - ensures stable ADC full-scale accuracy across industrial temperature range. |
| Excitation Current Sources | Two channels, 50–1000 µA programmable, ±0.2% matching - enables precise ratiometric bridge excitation for load cell and pressure sensor interfaces. |
| Communication | One ISO 11898-1 CAN channel (1 Mbps), six SCIg UARTs, one RIIC (400 kbps), one RSPI (16 Mbps) - provides robust fieldbus connectivity and multi-protocol sensor hub capability. |
| Memory | 128 KB flash (no wait states at 32 MHz), 16 KB SRAM, 8 KB data flash (1M erase cycles) - supports firmware updates, calibration storage, and secure parameter retention. |
Pinout & Package
Package: PLQP0100KB-B - 100-pin LQFP, 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Core power supply / ground | 1.8–5.5 V single-supply operation; separate AVCC0 (4.5–5.5 V) required for 12-bit ADC accuracy. |
| HVAIN0–HVAIN3 | High-voltage analog inputs | ±10-V tolerant differential inputs for direct connection to unconditioned bridge sensors. |
| IEXC0 / IEXC1 | Excitation current outputs | Programmable 50–1000 µA current sources with ±0.2% matching for ratiometric sensor biasing. |
| AVCC0 / AVSS0 | Analog power supply / ground | Must be supplied at 4.5–5.5 V for full 12-bit ADC performance; decoupling critical for DSADB noise floor. |
| DSAD_VREFH / DSAD_VREFL | Delta-sigma ADC reference | Accepts external reference or internal 2.5 V VREF; enables flexible scaling for varying sensor output ranges. |
| MTU0–MTU5 | Multi-function timer I/O | Support PWM generation, input capture, phase counting, and ADC trigger synchronization - essential for motor control feedback loops. |
| CAN_TX / CAN_RX | CAN bus interface | Differential signaling pins compliant with ISO 11898-1 physical layer; require external transceiver for bus connection. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 50/60 Hz rejection | Configurable at 10/54 SPS output data rates - eliminates mains interference in weigh scales and process instrumentation without external notch filters. |
| Background Operation (BGO) | Data flash programming/erasing while CPU executes code - enables over-the-air firmware updates without system interruption. |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining (e.g., MTU overflow → ADC conversion start → DMAC transfer) - reduces CPU load and interrupt latency in sensor acquisition pipelines. |
| Low-side switch (LSW) | 10 Ω max on-resistance, 30 mA max current - allows controlled power gating of external analog front-end components during sleep modes. |
| IEC 60730 self-test assist | Integrated RAM test, clock accuracy monitoring (CAC), IWDT disconnect detection - simplifies functional safety certification for Class B appliance control. |
Applications
| Industrial Weigh Scale System | Smart Pressure Transmitter |
|---|---|
Use Scenario: High-accuracy weight measurement in platform scales and hopper load cells under variable ambient conditions. IC Role / Device Role / Timing Role: Primary sensor interface MCU handling bridge excitation, 24-bit delta-sigma conversion, digital filtering, and CAN-based fieldbus reporting. Use Value: ±10-V HVAIN pins and 125 kSPS sampling enable direct connection to mV/V strain gauge outputs; onboard PGA eliminates need for discrete instrumentation amps. | Use Scenario: 4–20 mA HART-enabled pressure transmitter with local display and diagnostics. IC Role / Device Role / Timing Role: Analog acquisition engine with excitation current sourcing, temperature compensation, and dual ADC (DSADB + S12AD) for fast diagnostic sampling. Use Value: Integrated 2.5 V voltage reference (8 ppm/°C) and excitation current matching (±0.2%) ensure long-term stability of pressure readings across –40°C to +85°C. |
| Energy Meter Front-End | Motor Control Feedback Unit |
Use Scenario: High-precision current/voltage sensing in polyphase energy meters compliant with IEC 62053. IC Role / Device Role / Timing Role: Delta-sigma ADC controller with sinc filter configuration, offset/gain calibration, and real-time clock for time-stamped metering data. Use Value: Fifth-order sinc + first-order sinc filter mode achieves >100 dB dynamic range at 54 SPS - meets Class 0.2 accuracy requirements without external oversampling. | Use Scenario: Compact position/speed feedback module for BLDC/PMSM drives in HVAC and industrial automation. IC Role / Device Role / Timing Role: Real-time encoder interface MCU using MTU2a for quadrature decoding and ELC-triggered ADC sampling of motor phase currents. Use Value: 16-bit MTU with phase-counting mode and hardware ADC triggers reduce jitter in current sampling timing - improving torque ripple and efficiency. |
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 |
|---|---|---|---|
| R5F523E5NDFP#50 | Same package and memory, but 5-V analog input range and 31.25 kSPS DSADB max sampling rate - no ±10-V HVAIN support. | Suitable for lower-range sensors (e.g., thermocouples, 0–5 V outputs) where extended voltage range is unnecessary. | Select when cost optimization is prioritized and ±10-V input capability is not required. |
| R5F523E5LDBS#50 | Identical analog specs (±10-V, 125 kSPS), but 100-pin TFBGA (5.5 × 5.5 mm) instead of LFQFP - smaller footprint, different thermal and routing characteristics. | Better suited for space-constrained PCBs where fine-pitch BGA assembly is available and thermal dissipation is managed. | Choose for miniaturized designs where board area is critical and BGA rework capability exists. |
Compared with R5F523E5NDFP#50, the R5F523E5LDFP#50 delivers higher analog input range and faster sampling for demanding sensor interfaces; versus R5F523E5LDBS#50, it offers easier prototyping and thermal management via QFP packaging while retaining identical analog performance.
Availability
R5F523E5LDFP#50 is available at Aetrix Electronics and suitable for industrial weighing systems, smart pressure transmitters, energy meter front-ends, and motor control feedback units requiring stable component supply and long-term production continuity.
Supply support for R5F523E5LDFP#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.
The RX23E-B Group - including the R5F523E5LDFP#50 - was designed specifically for high-accuracy sensor signal acquisition in industrial automation, with integrated delta-sigma ADC, excitation sources, and functional safety features aligned to IEC 60730.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in the R5F523E5LDFP#50?
The R5F523E5LDFP#50 supports a maximum delta-sigma ADC sampling rate of 125 kSPS at 24-bit resolution when operating with a 4 MHz modulator clock. This rate is achievable with appropriate sinc filter configuration and is specified for the L-series variant with ±10-V input capability. Lower rates (e.g., 31.25 kSPS) are available for enhanced noise rejection in precision metrology applications.
Does the R5F523E5LDFP#50 support ±10-V analog inputs directly?
Yes, the R5F523E5LDFP#50 includes four dedicated HVAIN pins (HVAIN0–HVAIN3) rated for ±10-V differential input - enabling direct connection to unconditioned bridge sensors such as strain gauges and load cells without external level-shifting circuitry. This feature is specific to L- and K-series variants and is confirmed in Table 1.3 and Section 1.4 of the R01DS0402EJ0100 datasheet.
What are the key differences between R5F523E5LDFP#50 and R5F523E5NDFP#50?
The R5F523E5LDFP#50 and R5F523E5NDFP#50 share the same 100-pin LFQFP package, 128 KB flash, and 16 KB RAM, but differ critically in analog capability: R5F523E5LDFP#50 supports ±10-V inputs and 125 kSPS sampling, while R5F523E5NDFP#50 is limited to 5-V range and 31.25 kSPS. Both operate from –40°C to +85°C and include identical CAN, SCI, and timer peripherals.
Can the R5F523E5LDFP#50 operate with a single 3.3-V supply?
Yes, the R5F523E5LDFP#50 operates from a single 1.8-V to 5.5-V VCC supply. At 3.3 V, it supports maximum 32 MHz CPU operation per the power supply vs. frequency specification (VCC ≥ 2.7 V → 32 MHz). However, AVCC0 must be supplied at 4.5–5.5 V for full 12-bit ADC accuracy, requiring a separate analog rail or LDO for mixed-signal integrity.
Is the R5F523E5LDFP#50 pin-compatible with other RX23E-B group MCUs in the same package?
Yes, all RX23E-B MCUs in the 100-pin LFQFP (PLQP0100KB-B) package - including R5F523E5LDFP#50, R5F523E5NDFP#50, R5F523E6LDFP#50, and R5F523E6NDFP#50 - share identical pinouts and mechanical footprint. Functional differences (e.g., ADC range, sampling rate, flash size) are implemented internally and do not affect PCB layout compatibility.
R5F523E5LDFP#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-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, 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5LDFP#50 FAQ
1.How can I place an order for R5F523E5LDFP#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5LDFP#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 R5F523E5LDFP#50 reliable?
The price and inventory of R5F523E5LDFP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5LDFP#50 is usually 5 days.
3.What payment methods are accepted for R5F523E5LDFP#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5LDFP#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5LDFP#50?
R5F523E5LDFP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5LDFP#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 R5F523E5LDFP#50?
For technical support, including R5F523E5LDFP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5LDFP#50 requirements.
6.How does Aetrix verify that R5F523E5LDFP#50 is sourced from the original manufacturer or authorized distributors?
All R5F523E5LDFP#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 R5F523E5LDFP#50 meets industry standards.
7.What is the process for return or replacement of R5F523E5LDFP#50?
All R5F523E5LDFP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5LDFP#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 R5F523E5LDFP#50 part is unused and in its original packaging.
Return procedure for R5F523E5LDFP#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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