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Renesas R5F523E5BDNF#40
- Part No.:
- R5F523E5BDNF#40
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E5BDNF#40.pdf
- Description:
- 32BIT MCU RX23E-B 128K HWQFN40 T
- Quantity:
- Payment:
- Shipping:
Inventory:4,397
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Product details
Overview
R5F523E5BDNF#40 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 125 kSPS max sampling rate, ±5-V analog input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and 128 KB flash/16 KB SRAM. It operates at up to 32 MHz across –40°C to +85°C and targets load cell, pressure sensor, and weigh scale front-end systems.
For engineers reviewing the R5F523E5BDNF#40 datasheet, R5F523E5BDNF#40 pinout, R5F523E5BDNF#40 application, or R5F523E5BDNF#40 equivalent, key selection criteria include its 24-bit ADC effective resolution at 3.8 SPS, low-drift voltage reference (2.5 V, 8 ppm/°C), ±10-V-capable HVAIN pins (though this variant supports ±5 V), and integrated CAN interface compliant with ISO11898-1.
Technical Context
The R5F523E5BDNF#40 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @ 32 MHz, and memory protection unit (MPU). Its analog subsystem centers on the DSADB module - a 24-bit delta-sigma ADC with fourth- to fifth-order sinc filtering, simultaneous 50/60 Hz rejection, and offset/gain error calibration.
Digital integration includes one CAN channel (1 Mbps), six SCIg interfaces, one RIIC, one RSPI, four-channel DMAC, ELC for interrupt-free peripheral chaining, and low-power modes (software standby with LPT active). The device uses a 40-pin HWQFN (PWQN0040KD-A) package with 6 × 6 mm footprint and 0.5 mm pitch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC Harvard architecture with 5-stage pipeline, 64 DMIPS @ 32 MHz |
| Max Operating Frequency | 32 MHz (dependent on VCC ≥ 2.7 V); enables real-time signal processing at sub-µs latency |
| 24-bit Delta-Sigma ADC | 125 kSPS max sampling rate; 24-bit resolution with sinc filter options for noise shaping |
| Analog Input Range | ±5 V (HVAIN pins support ±10 V, but B-grade variant limited to ±5 V per datasheet Table 1.3) |
| Flash / SRAM / Data Flash | 128 KB on-chip flash (no wait states @ 32 MHz), 16 KB SRAM, 8 KB data flash (1M erase cycles) |
| Operating Temperature | –40°C to +85°C (D-grade); suitable for industrial control cabinets and factory-floor environments |
| Package | PWQN0040KD-A: 40-pin HWQFN, 6 × 6 mm, 0.5 mm pitch, exposed thermal pad |
Pinout & Package
PWQN0040KD-A is a 40-pin HWQFN package with 6 × 6 mm body, 0.5 mm pitch, and exposed thermal pad (pin 40). It supports 13 I/O pins (14 pull-up resistors, 13 open-drain outputs), 2 × 5-V tolerant pins, AVCC0/AVSS0 analog supply pair, and dedicated HVAIN0–HVAIN1 ±5-V differential inputs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Core power / ground | 1.8–5.5 V digital supply; decoupling required within 3 mm of pins |
| AVCC0 / AVSS0 | Analog power / ground | 4.5–5.5 V analog supply; separate routing mandatory for <10 µV noise floor |
| HVAIN0 / HVAIN1 | Differential analog input | ±5-V input range; connects directly to load cell bridge outputs without external attenuation |
| EXC0 / EXC1 | Excitation current outputs | Programmable 50–1000 µA current sources; matched drift ≤5 ppm/°C for ratiometric sensing |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external RC or supervisor ICs |
| CLKIN / CLKOUT | External clock interface | Supports 1–20 MHz crystal or external clock; used for main oscillator or precision timing reference |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit delta-sigma ADC with sinc filtering | Configurable fourth/fifth-order sinc filters enable >100 dB SNR at 3.8 SPS for ultra-low-noise weight measurement |
| Rail-to-rail programmable gain instrumentation amplifier | Gain = 1–128 with 11 nVRMS input-referred noise (gain=128) and 4 nV/°C offset drift for stable long-term calibration |
| On-chip 2.5 V voltage reference | 8 ppm/°C drift over –40°C to +85°C; ±10 mA output supports external ADC reference or sensor excitation |
| Integrated CAN 2.0B interface | ISO11898-1 compliant up to 1 Mbps; enables direct connection to industrial fieldbus networks without transceiver logic |
| Event Link Controller (ELC) | Hardware-triggered ADC conversions and timer actions without CPU wake-up; reduces active time by >70% in periodic sensing |
| IEC60730 safety support | Built-in RAM test assistance, clock accuracy monitoring (CAC), and ADC self-diagnostic functions for Class B compliance |
Applications
| Industrial Weigh Scales | Pressure Transmitters |
|---|---|
|
Use Scenario: High-accuracy static and dynamic weighing in tank, hopper, and platform scales. IC Role / Device Role / Timing Role: Primary analog front-end MCU handling bridge sensor excitation, 24-bit sigma-delta conversion, linearization, and CAN-based output. Use Value: Achieves ≤0.005% full-scale linearity error using on-chip PGA gain calibration and simultaneous 50/60 Hz rejection at 10 SPS. |
Use Scenario: 4–20 mA or digital (CAN) output pressure sensors for HVAC, process control, and hydraulic systems. IC Role / Device Role / Timing Role: Sensor signal conditioner with excitation current sourcing, temperature compensation, and digital communication stack. Use Value: Excitation current matching ≤±0.2% and drift ≤5 ppm/°C ensure stable ratiometric measurement across –40°C to +85°C ambient. |
| Load Cell Signal Conditioners | Multi-Sensor Industrial Gateways |
|
Use Scenario: Compact, single-chip signal conditioning modules for OEM strain-gauge sensor assemblies. IC Role / Device Role / Timing Role: Standalone analog acquisition node with 24-bit ADC, PGA, reference, and isolated CAN PHY interface. Use Value: Eliminates external op-amps, references, and ADC drivers; reduces BOM count by ≥7 components versus discrete solutions. |
Use Scenario: Edge-node aggregators collecting data from multiple analog sensors (load cells, RTDs, thermocouples) before CAN or SCI transmission. IC Role / Device Role / Timing Role: Multi-channel analog hub with 12-bit S12AD for fast auxiliary sensing and DSADB for precision primary channels. Use Value: Dual ADC architecture enables concurrent high-speed diagnostics (1.4 µs/channel) and high-resolution metrology (24-bit @ 3.8 SPS). |
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 |
|---|---|---|---|
| R5F523E5KDNF#40 | Same package and memory; supports ±10-V analog input range via HVAIN pins | Required for sensors with >±5-V output swing (e.g., high-output load cells, shunt-based current monitors) | Select when full ±10-V input capability is needed; otherwise R5F523E5BDNF#40 offers optimal cost/performance for ±5-V systems |
| R5F523E5JDFN#30 | 80-pin LFQFP package; adds LCD controller (40×4 SEG/COM), RTC, and two extra SCI channels | Suitable for local HMI-integrated metering devices requiring display and calendar-aware logging | Choose only if LCD driving or additional serial interfaces are required; larger footprint increases PCB area and cost |
Compared with R5F523E5KDNF#40 and R5F523E5JDFN#30, the R5F523E5BDNF#40 delivers the smallest form factor (6×6 mm) and lowest system cost for pure ±5-V analog sensing nodes, while retaining full CAN, ELC, and IEC60730 safety features without unnecessary peripherals.
Availability
R5F523E5BDNF#40 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, and load cell signal conditioners requiring stable component supply, long lifecycle assurance, and traceable sourcing for production ramp.
Supply support for R5F523E5BDNF#40 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 is designed specifically for high-accuracy industrial sensing applications, integrating metrology-grade analog front ends with robust real-time control and functional safety features.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BDNF#40?
The R5F523E5BDNF#40 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable at lower resolution settings and with appropriate sinc filter configuration; for highest effective resolution (e.g., 24-bit at 3.8 SPS), the data rate drops to enable noise shaping and 50/60 Hz rejection.
Does R5F523E5BDNF#40 support ±10-V analog inputs?
No - the R5F523E5BDNF#40 is the "B"-grade variant, which supports a ±5-V analog input range on its HVAIN pins. For ±10-V operation, the "K"-grade variant R5F523E5KDNF#40 must be used, as confirmed in Table 1.3 of the datasheet.
What is the purpose of the excitation current sources in R5F523E5BDNF#40?
The R5F523E5BDNF#40 integrates two programmable excitation current sources (EXC0/EXC1) delivering 50–1000 µA with ≤±0.2% matching and ≤5 ppm/°C drift. They provide precise, ratiometric biasing for bridge-type sensors (e.g., load cells, pressure sensors), eliminating external current sources and improving temperature stability.
Can R5F523E5BDNF#40 operate without an external crystal?
Yes - the R5F523E5BDNF#40 includes on-chip high-speed and low-speed oscillators. It can run from the internal high-speed oscillator (HOCO) at up to 32 MHz (with software trimming), enabling crystal-free operation for cost-sensitive or space-constrained designs where ±1% frequency accuracy is acceptable.
Is the R5F523E5BDNF#40 pin-compatible with other RX23E-B group members?
No - the R5F523E5BDNF#40 uses the 40-pin HWQFN (PWQN0040KD-A) package, while other variants use 48-, 64-, 80-, or 100-pin packages. Pin compatibility exists only within the same package type (e.g., all PWQN0040KD-A variants share identical pinout), but not across package families.
R5F523E5BDNF#40 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- 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:
- 13
- 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 6x12b SAR, 4x24b Sigma-Delta; D/A 1x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5BDNF#40 FAQ
1.How can I place an order for R5F523E5BDNF#40 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5BDNF#40 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 R5F523E5BDNF#40 reliable?
The price and inventory of R5F523E5BDNF#40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5BDNF#40 is usually 5 days.
3.What payment methods are accepted for R5F523E5BDNF#40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5BDNF#40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5BDNF#40?
R5F523E5BDNF#40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5BDNF#40 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 R5F523E5BDNF#40?
For technical support, including R5F523E5BDNF#40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5BDNF#40 requirements.
6.How does Aetrix verify that R5F523E5BDNF#40 is sourced from the original manufacturer or authorized distributors?
All R5F523E5BDNF#40 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 R5F523E5BDNF#40 meets industry standards.
7.What is the process for return or replacement of R5F523E5BDNF#40?
All R5F523E5BDNF#40 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5BDNF#40, 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 R5F523E5BDNF#40 part is unused and in its original packaging.
Return procedure for R5F523E5BDNF#40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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