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Renesas R5F523E6SDFL#50
- Part No.:
- R5F523E6SDFL#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F523E6SDFL#50.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,432
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Product details
Overview
R5F523E6SDFL#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial temperature sensing systems, featuring a single 24-bit delta-sigma A/D converter (DSAD), rail-to-rail programmable gain instrumentation amplifier (PGA) with gain up to ×128, 2.5 V low-drift voltage reference (10 ppm/°C), and integrated excitation current sources (50–1000 µA). It operates at 32 MHz, delivers 64 DMIPS, includes 256 KB on-chip flash, 32 KB SRAM, and supports IEC60730-compliant self-diagnostic functions.
For engineers reviewing the R5F523E6SDFL#50 datasheet, R5F523E6SDFL#50 pinout, R5F523E6SDFL#50 application, or R5F523E6SDFL#50 equivalent, this MCU is selected for thermocouple and RTD signal conditioning where 23-bit effective resolution (7.6 SPS), simultaneous 50/60 Hz rejection, and on-chip analog front-end integration eliminate external signal chain components.
Technical Context
The R5F523E6SDFL#50 implements a dedicated analog subsystem comprising two independent 24-bit delta-sigma modulators (one active per DSAD unit), fourth-order sinc filters, offset/gain calibration logic, and dual reference input paths (REF0P/REF0N and REF1P/REF1N). Its PGA supports rail-to-rail operation with 30 nVRMS noise at gain ×128 and drift specs of 10 nV/°C (offset) and 1 ppm/°C (gain).
It integrates a 32-bit RXv2 CPU core with IEEE 754-compliant FPU, memory protection unit (MPU), and event link controller (ELC) enabling autonomous peripheral coordination without CPU wake-up - critical for synchronized multi-channel acquisition and low-power sensor node operation.
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 sensor linearization in firmware. |
| Delta-Sigma ADC | 1 × 24-bit DSAD unit with 6 differential inputs, 23-bit effective resolution at 7.6 SPS - meets Class A accuracy for RTD/thermocouple digitization. |
| PGA | Rail-to-rail programmable gain instrumentation amplifier, gain ×1 to ×128, 30 nVRMS noise (×128) - directly interfaces low-level thermocouple outputs without external amplification. |
| Voltage Reference | 2.5 V ±0.1%, 10 ppm/°C drift, ±10 mA output - provides stable excitation and reference for ratiometric measurements. |
| Excitation Current Sources | Four channels, 50–1000 µA programmable, ±0.2% matching, 5 ppm/°C drift - supports 2-/3-/4-wire RTD configurations with matched sourcing. |
| Operating Temp Range | –40°C to +85°C (D version) - qualified for industrial control cabinet environments. |
| Package | 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm, 0.5 mm pitch - compatible with standard reflow assembly and offers full analog I/O access. |
Pinout & Package
Package: 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed pad (thermal enhancement). Pin layout conforms to Renesas standard 48-pin RX23E-A mapping with dedicated analog power (AVCC0/AVSS0), reference (REF0P/REF0N/REF1P/REF1N), excitation (IEXC0–IEXC3), and low-side switch (LSW) terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN11 | Analog input multiplexer inputs | Supports up to 6 differential or 11 single-ended analog inputs; routed to DSAD or S12AD based on configuration. |
| REF0P / REF0N | Primary DSAD reference inputs | Accept external or internal reference; enable ratiometric measurement against excitation current or VREF. |
| IEXC0–IEXC3 | Excitation current source outputs | Programmable constant-current sources for RTD biasing; each supports 50–1000 µA with tight matching. |
| LSW | Low-side switch output | 10 Ω max on-resistance, 30 mA max current - used for automatic RTD lead compensation or sensor fault detection. |
| REFOUT | Internal 2.5 V reference output | Stabilized by 0.47 µF capacitor to AVSS0; supplies precision reference to DSAD and external circuitry. |
| AVCC0 / AVSS0 | Analog power supply rails | Separate 2.7–5.5 V analog domain; decoupling required to maintain 23-bit effective resolution. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 50/60 Hz rejection | Enabled at 10/54 SPS output data rates - eliminates mains interference in industrial plant environments without external notch filters. |
| On-chip offset/gain calibration | Hardware-assisted calibration for DSAD and PGA - reduces system-level calibration effort and improves long-term stability. |
| IEC60730 self-test support | Dedicated assistance for A/D converter, clock accuracy (CAC), IWDT, RAM (via DOC), and disconnect detection - accelerates Class B safety certification. |
| Event Link Controller (ELC) | 56-event routing without CPU intervention - allows DSAD conversion start, MTU waveform generation, and DTC transfers to synchronize autonomously. |
| Low-power timer (LPT) | 16-bit counter driven by IWDT oscillator during software standby - enables periodic wake-up for sensor polling with µA-level quiescent current. |
Applications
| Industrial Temperature Transmitter | RTD-Based Process Controller |
|---|---|
|
Use Scenario: DIN-rail mounted 4–20 mA transmitter measuring Pt100/Pt1000 sensors in chemical processing plants. IC Role / Device Role / Timing Role: Primary signal conditioner and digital controller; DSAD acquires RTD voltage, PGA sets gain, LSW enables 3-wire compensation, and SCI/RSPI communicates with PLC. Use Value: Eliminates external op-amps, reference ICs, and discrete excitation circuitry - reduces BOM count by ≥7 components and improves thermal drift performance. |
Use Scenario: Embedded PID controller in HVAC air-handling units regulating chilled water temperature via 4-wire RTDs. IC Role / Device Role / Timing Role: Real-time analog acquisition engine and control processor; ELC triggers synchronized DSAD conversions and MTU PWM outputs for valve actuation. Use Value: Achieves <±0.1°C accuracy over –20°C to +80°C ambient using on-chip calibration and 23-bit effective resolution at 15.6 kSPS. |
| Thermocouple Data Logger | Smart Sensor Node (Wireless) |
|
Use Scenario: Battery-powered field logger capturing Type K/J thermocouple outputs in remote oil & gas sites. IC Role / Device Role / Timing Role: Cold-junction compensation (CJC) via internal TEMPS sensor, DSAD digitizes thermocouple mV, IWDT ensures firmware integrity during long sleep cycles. Use Value: On-chip CJC and 30 nVRMS PGA noise enable sub-1°C measurement accuracy without external cold-junction ICs or ultra-low-noise op-amps. |
Use Scenario: LoRaWAN-enabled sensor node monitoring furnace thermocouples in manufacturing facilities. IC Role / Device Role / Timing Role: Ultra-low-power measurement subsystem; LPT wakes CPU every 10 s, DSAD samples at 7.6 SPS, and RSPI offloads data to transceiver. Use Value: 32 KB SRAM buffers 1 hour of 23-bit data; deep-sleep current <10 µA extends 2xAA battery life to >2 years. |
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 |
|---|---|---|---|
| R5F523E6ADFL#30 | Two 24-bit DSAD units (vs. one), 6-channel differential input per unit, same package and core specs. | Required for dual-sensor systems (e.g., redundant RTD + thermocouple) or multi-point temperature profiling. | Select when simultaneous acquisition from ≥12 analog inputs or independent DSAD calibration per channel is needed. |
| ADS124S08IRHBT | Standalone 24-bit delta-sigma ADC (no MCU core), SPI interface, 35 nVRMS noise at ×128, no integrated PGA or excitation sources. | Suitable only as analog front-end; requires external host MCU, reference, and excitation circuitry. | Choose when design already uses a separate controller and maximum ADC SNR (115 dB) is prioritized over integration. |
Compared with R5F523E6ADFL#30, the R5F523E6SDFL#50 reduces analog channel count but maintains identical precision, calibration, and low-power features - ideal for cost-sensitive single-sensor nodes. Versus ADS124S08IRHBT, it trades raw ADC performance for full embedded autonomy, eliminating four external ICs and simplifying PCB layout and firmware architecture.
Availability
R5F523E6SDFL#50 is available at Aetrix Electronics and suitable for industrial temperature transmitters, RTD-based process controllers, thermocouple data loggers, and smart wireless sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for R5F523E6SDFL#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 applications.
The RX23E-A Group, including R5F523E6SDFL#50, was designed specifically for high-accuracy industrial sensing - integrating metrology-grade analog peripherals with a robust 32-bit MCU core to replace multi-chip signal chains in temperature, pressure, and strain measurement systems.
FAQ
What is the effective resolution of the delta-sigma A/D converter in R5F523E6SDFL#50 at 7.6 SPS?
The R5F523E6SDFL#50 achieves 23-bit effective resolution (ENOB) at 7.6 SPS in Normal mode with gain = 1, as specified in the datasheet. This performance is enabled by its fourth-order sinc filter, on-chip offset/gain calibration, and 30 nVRMS PGA noise floor at gain ×128. The value is measured under conditions of AVCC0 = 5.0 V, VREF = 2.5 V, and ambient temperature = 25°C.
Does R5F523E6SDFL#50 support simultaneous 50 Hz and 60 Hz noise rejection?
Yes, R5F523E6SDFL#50 supports simultaneous 50 Hz and 60 Hz rejection when configured for output data rates of 10 SPS or 54 SPS. This capability is implemented in hardware within the sinc filter stage and does not require firmware intervention. It is explicitly validated in the DSAD section of the R01DS0330EJ0130 datasheet.
How many excitation current sources does R5F523E6SDFL#50 include, and what are their matching specifications?
R5F523E6SDFL#50 includes four independent excitation current sources (IEXC0–IEXC3), each programmable from 50 µA to 1000 µA. Their current matching is ±0.2% (max) and drift matching is 5 ppm/°C, as confirmed in the Analog Front End section of the datasheet. These specs enable accurate 3- and 4-wire RTD measurements without external trimming.
What is the operating temperature range for R5F523E6SDFL#50, and which grade does it belong to?
R5F523E6SDFL#50 is rated for –40°C to +85°C operation and belongs to the D-grade industrial temperature range. This is indicated by the "D" in the part number suffix per Figure 1.1 of the datasheet. It is not rated for the extended –40°C to +105°C (G-grade) range supported by variants like R5F523E6SGFL#30.
Can R5F523E6SDFL#50 perform cold-junction compensation for thermocouples internally?
Yes, R5F523E6SDFL#50 includes an on-chip temperature sensor (TEMPS) with ±5°C accuracy, located near the analog input pins. When used with the DSAD and PGA, it enables hardware-assisted cold-junction compensation for Type K/J thermocouples. The sensor output is accessible via the analog multiplexer and calibrated using the built-in self-test functions.
R5F523E6SDFL#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RX23E-A
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RXv2
- Core Size:
- 32-Bit
- Speed:
- 32MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 16
- 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, 12x24b Sigma-Delta
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E6SDFL#50 FAQ
1.How can I place an order for R5F523E6SDFL#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E6SDFL#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 R5F523E6SDFL#50 reliable?
The price and inventory of R5F523E6SDFL#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E6SDFL#50 is usually 5 days.
3.What payment methods are accepted for R5F523E6SDFL#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E6SDFL#50 transactions.
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4.How is shipping managed for R5F523E6SDFL#50?
R5F523E6SDFL#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E6SDFL#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 R5F523E6SDFL#50?
For technical support, including R5F523E6SDFL#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E6SDFL#50 requirements.
6.How does Aetrix verify that R5F523E6SDFL#50 is sourced from the original manufacturer or authorized distributors?
All R5F523E6SDFL#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 R5F523E6SDFL#50 meets industry standards.
7.What is the process for return or replacement of R5F523E6SDFL#50?
All R5F523E6SDFL#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E6SDFL#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 R5F523E6SDFL#50 part is unused and in its original packaging.
Return procedure for R5F523E6SDFL#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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