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Renesas R5F523E5BDFL#50
- Part No.:
- R5F523E5BDFL#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F523E5BDFL#50.pdf
- Description:
- 32BIT MCU RX23E-B 128K LFQFP48 T
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
R5F523E5BDFL#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), 125 kSPS max sampling rate, 1.8–5.5 V single-supply operation, and CAN 2.0B interface compliant to ISO 11898-1 at up to 1 Mbps - enabling direct connection to strain gauges, load cells, and RTD/thermocouple signal chains.
For engineers reviewing the R5F523E5BDFL#50 datasheet, R5F523E5BDFL#50 pinout, R5F523E5BDFL#50 application, or R5F523E5BDFL#50 equivalent, key selection criteria include its 128 KB flash / 16 KB SRAM memory configuration, 48-pin LFQFP package with 5-V-tolerant I/O, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and support for IEC 60730 safety diagnostics including A/D self-test and disconnect detection.
Technical Context
The R5F523E5BDFL#50 implements the RXv2 CPU core with 32 MHz maximum operation (64 DMIPS), IEEE 754-compliant single-precision FPU, and memory protection unit (MPU) for deterministic real-time control. Its analog subsystem centers on the DSADB module synchronized to PCLKC (up to 16 MHz), featuring fourth- and fifth-order sinc digital filters, simultaneous 50/60 Hz rejection, and offset/gain error calibration.
Digital integration includes ELC-driven event-triggered A/D conversion, four-channel DMAC for zero-CPU-overhead data movement, and RSCAN CAN controller with 16 message boxes. Power management supports three low-power modes, including software standby with active low-power timer (LPT) driven by sub-clock or IWDT oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture, 32 MHz max, 64 DMIPS - enables deterministic real-time control loops with floating-point math for sensor linearization. |
| Flash / SRAM / Data Flash | 128 KB on-chip flash (no wait states at 32 MHz), 16 KB SRAM, 8 KB data flash rated for 1M program/erase cycles - supports field firmware updates and parameter storage. |
| 24-bit Delta-Sigma ADC | 8-channel differential input, 125 kSPS max sampling rate, ±10-V HVAIN input range, 24-bit effective resolution at 3.8 SPS - delivers high dynamic range for precision weigh scales and process transmitters. |
| Programmable Gain IA | Rail-to-rail PGA with gain = 1–128, 11 nVRMS noise (gain = 128, 3.8 SPS), 4 nV/°C offset drift - eliminates external signal conditioning for mV-level bridge sensors. |
| Voltage Reference | On-chip 2.5 V reference with 8 ppm/°C drift (–40 to +85°C), ±10 mA output - provides stable excitation and ADC reference without external components. |
| Communication Interfaces | 1× CAN 2.0B (1 Mbps), 6× SCI (asynchronous/clock-sync/smart card), 1× I²C (400 kbps), 1× RSPI (16 Mbps) - enables robust industrial networking and multi-protocol sensor hub design. |
| Package & Temp Range | 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm, 0.5 mm pitch; operating temperature –40°C to +85°C (D version) - suitable for compact, convection-cooled industrial enclosures. |
Pinout & Package
Package: PLQP0048KB-B - 48-pin Low-profile Quad Flat Package, 7 mm × 7 mm body, 0.5 mm lead pitch, exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Main digital power (1.8–5.5 V); dedicated AVCC0 (4.5–5.5 V) required for 12-bit ADC and analog front end. |
| HVAIN0–HVAIN3 | Analog input | ±10-V tolerant high-voltage analog inputs for direct connection to unconditioned bridge sensors or thermocouples. |
| AVCC0 / AVSS0 | Analog power / ground | Separate analog domain supply ensures clean reference for 24-bit delta-sigma and 12-bit ADCs; AVCC0 must be ≥4.5 V for full S12AD performance. |
| EXC0 / EXC1 | Excitation current output | Two programmable current sources (50–1000 µA, ±0.2% matching) for RTD or resistive sensor biasing - eliminates external current DACs. |
| TXD0 / RXD0 | SCI0 serial interface | Asynchronous UART pins supporting bit-rate modulation for noise-immune communication in motor drive environments. |
| TXD1 / RXD1 | SCI1 serial interface | Dedicated SCI channel with LIN protocol support (via SCIh mode) for automotive-grade sensor nodes. |
| CANH / CANL | CAN bus differential pair | ISO 11898-1 compliant physical layer interface; internal termination resistors configurable via registers - reduces BOM count. |
| MTIOC0A / MTIOC0B | MTU2a PWM outputs | Complementary PWM outputs with dead-time insertion for driving half-bridge gate drivers in power supply feedback control. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 60730 Safety Support | Hardware-assisted self-diagnostic functions for A/D converter, clock accuracy (CAC), IWDT, RAM test (via DOC), and analog input disconnect detection - reduces Class B certification effort. |
| Delta-Sigma ADC Digital Filters | Configurable fourth- or fifth-order sinc filters with cascaded options enable simultaneous 50/60 Hz line rejection at 10/54 SPS - critical for AC-coupled industrial environments. |
| Low-Drift Analog Front End | PGA gain drift ≤1 ppm/°C (gain = 1–16), offset drift ≤4 nV/°C (gain = 64–128), and 2.5 V reference drift ≤8 ppm/°C - ensures <0.01% FS error over industrial temperature range. |
| Event Link Controller (ELC) | Direct hardware triggering between peripherals (e.g., MTU timer → DSAD start) without CPU or interrupt latency - enables jitter-free synchronized sampling across multiple sensors. |
| High-Voltage Input Protection | Integrated ±10-V input pins (HVAIN) with fault detection for overvoltage, reference disconnect, and excitation source disconnect - eliminates need for external clamping networks. |
Applications
| Industrial Weigh Scale | Process Transmitter |
|---|---|
|
Use Scenario: High-accuracy weight measurement in platform scales and hopper load cells using full-bridge strain gauge sensors. IC Role / Device Role / Timing Role: Primary signal acquisition MCU with integrated PGA, 24-bit delta-sigma ADC, and excitation current sources - replaces discrete op-amp/ADC/filter circuits. Use Value: Achieves ≤0.005% FS linearity and <10 ppm/°C total system drift without external calibration, reducing factory setup time and field maintenance. |
Use Scenario: 4–20 mA/HART-enabled pressure, flow, or level transmitter for chemical plant monitoring. IC Role / Device Role / Timing Role: Sensor interface and digital processing unit with CAN and SCI interfaces for loop-powered field device communication. Use Value: On-chip CAN PHY support and HART-compatible UART timing reduce component count; IEC 60730 diagnostics satisfy SIL-2 functional safety requirements. |
| Motor Drive Current Sensing | Energy Metering Node |
|
Use Scenario: Isolated shunt-based phase current measurement in servo drives and inverters. IC Role / Device Role / Timing Role: High-speed analog acquisition node synchronizing DSAD sampling to PWM edges via ELC-triggered conversion start. Use Value: 125 kSPS sampling captures fast current transients; simultaneous 50/60 Hz rejection suppresses grid harmonics during RMS calculation. |
Use Scenario: DIN-rail mounted electricity meter with polyphase voltage/current sensing and tariff calculation. IC Role / Device Role / Timing Role: Precision metrology engine integrating 24-bit ADC, 16-bit DAC for anti-tamper waveform generation, and RTC for billing timestamping. Use Value: Single-chip solution meets IEC 62053-21 Class 0.5S accuracy with on-chip voltage reference and temperature-compensated PGA gain. |
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 |
|---|---|---|---|
| R5F523E5KDFL#50 | Same 48-pin LFQFP package and 128 KB/16 KB memory, but supports ±10-V analog input range (K suffix) vs. ±5-V (B suffix); includes LCD driver disabled. | Required when interfacing to ±10-V industrial sensors (e.g., 0–10 V output transducers) without external level-shifting circuitry. | Select R5F523E5KDFL#50 if full ±10-V input range is needed; R5F523E5BDFL#50 is optimal for cost-sensitive ±5-V designs with lower BOM overhead. |
| R5F523E5JDFN#50 | 80-pin LFQFP package (PLQP0080KB-B), same 128 KB/16 KB memory, supports LCD controller (J suffix), retains 125 kSPS DSAD and ±5-V input range. | Suitable for human-machine interface (HMI) enabled devices requiring local display (e.g., portable calibrators, handheld testers). | Choose R5F523E5JDFN#50 only when integrated segment LCD driving (40×4 COM/SEG) is required; R5F523E5BDFL#50 offers smaller footprint and lower power for headless sensor nodes. |
Compared with R5F523E5KDFL#50 and R5F523E5JDFN#50, the R5F523E5BDFL#50 delivers identical analog performance and CPU capability in the smallest 48-pin LFQFP package, making it the optimal choice for space-constrained, cost-sensitive industrial sensor nodes where ±5-V input range suffices and LCD is unnecessary.
Availability
R5F523E5BDFL#50 is available at Aetrix Electronics and suitable for industrial weigh scale systems, process transmitter modules, and motor drive current sensing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp-up.
Supply support for R5F523E5BDFL#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, with deep expertise in high-precision analog integration and functional safety.
The RX23E-B Group - including the R5F523E5BDFL#50 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, targeting applications demanding integrated 24-bit delta-sigma ADCs, programmable gain amplifiers, and IEC 60730 compliance without external support ICs.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BDFL#50?
The R5F523E5BDFL#50 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with reduced resolution and specific filter configurations - for example, at 125 kSPS, effective resolution is ~16 bits, while full 24-bit effective resolution is attained at 3.8 SPS. The modulator clock is fixed at 4 MHz (typical), and oversampling ratio is programmable from 32 to 1,048,576 to balance speed and resolution.
Does R5F523E5BDFL#50 support IEC 60730 Class B compliance out of the box?
Yes, the R5F523E5BDFL#50 includes hardware-assisted self-test features required for IEC 60730 Class B, including A/D converter diagnostic routines, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) testing, RAM integrity checks via the Data Operation Circuit (DOC), and analog input disconnect detection. These features reduce software validation effort but require proper initialization and periodic execution per the Renesas IEC 60730 application note R01AN4227.
What analog input voltage range does R5F523E5BDFL#50 support, and how is it configured?
The R5F523E5BDFL#50 supports a ±5-V analog input range on its HVAIN pins, as indicated by the "B" in the part number (per Figure 1.1). This is implemented using internal resistor dividers and clamping circuitry - no external attenuation is needed. For ±10-V operation, the "K" variant (e.g., R5F523E5KDFL#50) must be selected. Input range selection is fixed at manufacturing and cannot be changed in firmware.
Can R5F523E5BDFL#50 drive an LCD display?
No, the R5F523E5BDFL#50 does not include an LCD controller/driver. The "B" suffix in the part number explicitly denotes LCD functionality disabled (see Figure 1.1). Devices with LCD support use "J" (for 5-V range) or "L" (for 10-V range) suffixes. The R5F523E5BDFL#50 is optimized for compact, headless sensor nodes where display capability is unnecessary and board space is constrained.
What is the role of the excitation current sources (IEXC) in R5F523E5BDFL#50, and what are their specifications?
The R5F523E5BDFL#50 integrates two programmable excitation current sources (IEXC0 and IEXC1) for biasing resistive sensors such as RTDs and strain gauges. Each source delivers 50 µA, 100 µA, 250 µA, 500 µA, 750 µA, or 1000 µA with ±0.2% matching and 5 ppm/°C drift matching. They connect directly to the analog multiplexer (AMUX) and can be routed to HVAIN pins or internal PGA inputs - eliminating external current DACs and improving system accuracy.
R5F523E5BDFL#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-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:
- 17
- 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, 6x24b Sigma-Delta; D/A 1x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5BDFL#50 FAQ
1.How can I place an order for R5F523E5BDFL#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5BDFL#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 R5F523E5BDFL#50 reliable?
The price and inventory of R5F523E5BDFL#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5BDFL#50 is usually 5 days.
3.What payment methods are accepted for R5F523E5BDFL#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5BDFL#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5BDFL#50?
R5F523E5BDFL#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5BDFL#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 R5F523E5BDFL#50?
For technical support, including R5F523E5BDFL#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5BDFL#50 requirements.
6.How does Aetrix verify that R5F523E5BDFL#50 is sourced from the original manufacturer or authorized distributors?
All R5F523E5BDFL#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 R5F523E5BDFL#50 meets industry standards.
7.What is the process for return or replacement of R5F523E5BDFL#50?
All R5F523E5BDFL#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5BDFL#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 R5F523E5BDFL#50 part is unused and in its original packaging.
Return procedure for R5F523E5BDFL#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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