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Renesas R5F523E5BGNF#20
- Part No.:
- R5F523E5BGNF#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F523E5BGNF#20.pdf
- Description:
- 32BIT MCU RX23E-B 128K HWQFN40 -
- Quantity:
- Payment:
- Shipping:
Inventory:1,823
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Product details
Overview
R5F523E5BGNF#20 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor nodes and metering systems. It integrates a 24-bit delta-sigma ADC (125 kSPS, ±5 V input range), rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and CAN 2.0B interface - all operating at up to 32 MHz with 128 KB flash and 16 KB SRAM.
For engineers reviewing the R5F523E5BGNF#20 datasheet, R5F523E5BGNF#20 pinout, R5F523E5BGNF#20 application, or R5F523E5BGNF#20 equivalent, this MCU delivers deterministic real-time control, IEC60730-compliant self-test support, and integrated analog front-end functionality for load cell, RTD, and thermocouple signal conditioning without external signal chain components.
Technical Context
The R5F523E5BGNF#20 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination during CPU sleep. Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), with configurable sinc filters, simultaneous 50/60 Hz rejection, and hardware-assisted disconnect detection for HVAIN pins.
Digital integration includes one CAN channel (ISO 11898-1, up to 1 Mbps), six SCIg interfaces (asynchronous/clock-sync/smart card), one RIIC, one RSPI, four-channel DMAC, and ELC-triggered A/D conversion - all supported by a unified clock system with independent ICLK/PCLK/FCLK domains and CAC-based frequency accuracy monitoring.
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); supports 1.8–5.5 V single-supply operation |
| Flash / SRAM / Data Flash | 128 KB on-chip flash (no wait states @ 32 MHz), 16 KB SRAM, 8 KB data flash (1M erase/write cycles) |
| 24-bit Delta-Sigma ADC | 8-channel differential input, 125 kSPS max sampling rate, ±5 V input range, 24-bit effective resolution @ 3.8 SPS |
| Analog Front End | Rail-to-rail PGA (gain = 1–128), two excitation current sources (50–1000 µA, ±0.2% matching), 2.5 V reference (8 ppm/°C drift) |
| Communication Interfaces | 1× CAN 2.0B (1 Mbps), 6× SCIg, 1× RIIC (400 kbps), 1× RSPI (16 Mbps), no LCD controller |
| Package & Temp Range | PWQN0040KD-A: 40-pin HWQFN, 6 × 6 mm, 0.5 mm pitch; industrial grade (–40°C to +105°C) |
Pinout & Package
PWQN0040KD-A is a 40-pin HWQFN package (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Table 1.4 of R01DS0402EJ0100 Rev.1.00, supporting 13 I/O pins (including 2 × 5-V tolerant), 1 dedicated input, 14 pull-up resistors, and 13 open-drain outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Single 1.8–5.5 V supply domain; decoupling required per datasheet layout guidelines |
| HVAIN0–HVAIN1 | Analog input (high-voltage) | ±5 V input range; supports direct connection to load cells or bridge sensors without level-shifting |
| IEXC0 / IEXC1 | Excitation current output | Programmable 50–1000 µA sourcing; matched current pairs for 4-wire RTD biasing |
| AVCC0 / AVSS0 | Analog power / ground | Separate analog domain (4.5–5.5 V) for DSAD and S12AD; enables clean signal acquisition |
| DSAD_VREFH / DSAD_VREFL | Delta-sigma ADC reference | Accepts external reference or internal 2.5 V source; critical for absolute measurement accuracy |
| MTU0A / MTU0B | Timer waveform output | Complementary PWM outputs with POE2a-controlled high-impedance state for motor gate drive |
| CAN_TX / CAN_RX | CAN bus interface | Differential signaling pair compliant with ISO 11898-1; requires external transceiver and termination |
| SCI0_TXD / SCI0_RXD | Asynchronous serial I/O | Full-duplex UART interface with programmable baud rate generator and bit-rate modulation |
Key Features
| Feature | Design Value |
|---|---|
| IEC60730 Self-Diagnostic Support | Hardware-accelerated RAM test (DOC), A/D converter calibration, clock accuracy monitoring (CAC), and IWDT fault detection |
| Simultaneous 50/60 Hz Rejection | Configurable sinc filter modes enable real-time line-frequency noise cancellation at 10/54 SPS output rates |
| Background Operation (BGO) | Data flash programming/erasing proceeds concurrently with CPU execution - no firmware stall required |
| Event Link Controller (ELC) | Direct hardware triggering between peripherals (e.g., MTU timer → DSAD start) eliminates CPU ISR latency and overhead |
| Low-Power Timer (LPT) | 16-bit counter running from sub-clock or IWDT oscillator during software standby mode for wake-up scheduling |
| Delta-Sigma Input Disconnect Detection | Hardware-assisted open-circuit detection on HVAIN pins reduces firmware polling burden in sensor fault monitoring |
Applications
| Industrial Flow Meter | Smart Electricity Meter |
|---|---|
Use Scenario: High-accuracy volumetric flow measurement using differential pressure sensors and temperature-compensated RTDs. IC Role / Device Role / Timing Role: Primary signal conditioner and metrology engine - digitizes mV-level bridge outputs, applies PGA gain, performs sinc filtering, and computes compensated flow values via FPU. Use Value: Eliminates external precision op-amps and reference ICs; 24-bit resolution and ±0.2% current matching enable Class 0.5 meter certification. |
Use Scenario: Revenue-grade energy metering with harmonic analysis, tamper detection, and HPLC communication. IC Role / Device Role / Timing Role: Metrology SoC handling polyphase voltage/current sampling, RMS calculation, and tariff computation while managing secure communication stacks. Use Value: Integrated CAN and SCI interfaces support DLMS/COSEM over PLC or RF modems; built-in self-test satisfies IEC62056-62 requirements. |
| Load Cell Weighing Terminal | Process Temperature Transmitter |
Use Scenario: Platform-scale weighing system requiring millivolt sensitivity, zero tracking, and overload protection. IC Role / Device Role / Timing Role: Analog front-end controller - conditions full-bridge signals, manages excitation switching, executes digital filtering, and drives local display via GPIO. Use Value: Rail-to-rail PGA and ±5 V HVAIN inputs accept raw bridge outputs directly; low-drift reference ensures <0.01% FS/year stability. |
Use Scenario: 4–20 mA loop-powered transmitter for thermocouple or RTD temperature sensing in hazardous areas. IC Role / Device Role / Timing Role: Sensor interface and loop controller - acquires thermocouple EMF or RTD resistance, linearizes response, and modulates DAC output for current loop drive. Use Value: On-chip 16-bit DAC (R16DA) and excitation sources reduce BOM count; low-power modes extend battery life in wireless variants. |
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 |
|---|---|---|---|
| R5F523E5KGNF#20 | Same package and memory, but supports ±10 V HVAIN input range and higher PGA gain (×128) | Required for sensors with >5 V full-scale output (e.g., high-output strain gauges) | Select when input signal amplitude exceeds ±5 V; otherwise R5F523E5BGNF#20 offers optimal cost/performance balance. |
| R5F523E5BDNF#20 | Identical analog specs and pinout, but LFQFP-48 package (7 × 7 mm) with 17 I/O pins vs. 13 in HWQFN | Suitable where board space allows larger footprint and additional GPIOs are needed for LED indicators or relay control | Choose for prototyping flexibility or legacy PCB compatibility; HWQFN variant preferred for compact, high-density designs. |
Compared with R5F523E5KGNF#20, the R5F523E5BGNF#20 trades ±10 V input range for lower cost and identical thermal performance in the 6 × 6 mm HWQFN; versus R5F523E5BDNF#20, it delivers superior board-area efficiency and thermal dissipation despite fewer I/Os - making it ideal for space-constrained industrial transmitters.
Availability
R5F523E5BGNF#20 is available at Aetrix Electronics and suitable for industrial flow meters, smart electricity meters, load cell terminals, and process temperature transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F523E5BGNF#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 IoT applications.
The RX23E-B Group targets high-accuracy sensor signal conditioning and metrology, integrating precision analog peripherals with real-time MCU capabilities to replace multi-chip measurement subsystems.
FAQ
What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BGNF#20?
The R5F523E5BGNF#20 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB) when configured with appropriate sinc filter settings and modulator clock (fMOD = 4 MHz). At lower data rates such as 3.8 SPS, it achieves 24-bit effective resolution with simultaneous 50/60 Hz rejection capability.
Does R5F523E5BGNF#20 include an LCD controller?
No, the R5F523E5BGNF#20 does not include an LCD controller. Per the part number decoding in Figure 1.1 of R01DS0402EJ0100 Rev.1.00, the "B" suffix indicates the LCD driver is excluded. This distinguishes it from "J", "L", or "N" variants which integrate LCD controller/driver functionality.
What are the supported excitation current values for RTD biasing in R5F523E5BGNF#20?
The R5F523E5BGNF#20 provides two programmable excitation current sources (IEXC0/IEXC1) with selectable output levels of 50 µA, 100 µA, 250 µA, 500 µA, 750 µA, or 1000 µA. Current matching is specified at ±0.2%, and drift matching is 5 ppm/°C - enabling accurate 3- and 4-wire RTD measurements.
Can R5F523E5BGNF#20 operate from a 1.8 V supply?
Yes, the R5F523E5BGNF#20 supports single-supply operation from 1.8 V to 5.5 V. However, maximum operating frequency is voltage-dependent: at 1.8–2.4 V, it is limited to 8 MHz; at 2.4–2.7 V, up to 16 MHz; and only at ≥2.7 V can it achieve the full 32 MHz CPU speed with zero-wait-state flash access.
Is the CAN interface in R5F523E5BGNF#20 compatible with ISO 11898-1?
Yes, the RSCAN module in R5F523E5BGNF#20 is fully compliant with ISO 11898-1 for high-speed CAN (up to 1 Mbps), supporting both standard and extended frame formats. It requires an external CAN transceiver (e.g., TJA1042) and proper bus termination to implement a complete physical layer.
R5F523E5BGNF#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- 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, 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F523E5BGNF#20 FAQ
1.How can I place an order for R5F523E5BGNF#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F523E5BGNF#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 R5F523E5BGNF#20 reliable?
The price and inventory of R5F523E5BGNF#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F523E5BGNF#20 is usually 5 days.
3.What payment methods are accepted for R5F523E5BGNF#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F523E5BGNF#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F523E5BGNF#20?
R5F523E5BGNF#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F523E5BGNF#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 R5F523E5BGNF#20?
For technical support, including R5F523E5BGNF#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F523E5BGNF#20 requirements.
6.How does Aetrix verify that R5F523E5BGNF#20 is sourced from the original manufacturer or authorized distributors?
All R5F523E5BGNF#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 R5F523E5BGNF#20 meets industry standards.
7.What is the process for return or replacement of R5F523E5BGNF#20?
All R5F523E5BGNF#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F523E5BGNF#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 R5F523E5BGNF#20 part is unused and in its original packaging.
Return procedure for R5F523E5BGNF#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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