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Renesas R5F52315ADNE#20
- Part No.:
- R5F52315ADNE#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
R5F52315ADNE#20.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:832
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Product details
Overview
R5F52315ADNE#20 from Renesas is a 32-bit RXv2 core microcontroller operating at up to 54 MHz (88.56 DMIPS), featuring 128 KB on-chip flash, 32 KB SRAM, 8 KB data flash, integrated FPU (IEEE 754 single-precision), and 12-bit A/D converter with 24 channels - deployed in industrial HMI panels requiring deterministic real-time control and capacitive touch interface.
For engineers reviewing the R5F52315ADNE#20 datasheet, R5F52315ADNE#20 pinout, R5F52315ADNE#20 application, or R5F52315ADNE#20 equivalent, this MCU delivers verified USB 2.0 full-speed device capability, CAN 2.0B compliance (1 Mbps), RTC with battery backup, low-power software standby mode with LPT operation, and TSIP-Lite encryption for secure firmware updates in connected edge devices.
Technical Context
The R5F52315ADNE#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions - enabling 1-instruction-per-cycle execution at 54 MHz. It integrates a memory protection unit (MPU), on-chip debugging circuit, and CISC instruction set including 23 DSP and 11 FPU instructions.
Its peripheral subsystem includes ELC for interrupt-free module linking, DTC for efficient data transfers, and MPC for flexible I/O function assignment. Clock management supports independent domain clocks (ICLK/PCLKA/PCLKB/PCLKD/BCLK/FCLK), with dedicated PLLs for USB (48 MHz) and IWDT (15 kHz oscillator).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC core with 5-stage pipeline, 88.56 DMIPS @ 54 MHz |
| Flash Memory | 128 KB code flash with 1.8 V programmability and background operation support |
| SRAM | 32 KB on-chip SRAM, zero-wait-state access at 54 MHz |
| A/D Converter | 12-bit S12ADE with 24 input channels, 0.83 µs conversion time, per-channel sampling time control |
| USB Interface | USB 2.0 full-speed device controller (12 Mbps) with internal VCC_USB power supply (no external regulator needed when VCC = 4.0–5.5 V) |
| Operating Voltage | 1.8–5.5 V supply range; supports 54 MHz max frequency only above 2.7 V |
| Temperature Range | −40°C to +85°C (D version); qualified for industrial ambient conditions |
Pinout & Package
Packaged in 48-pin HWQFN (PWQN0048KB-A), 7 × 7 mm, 0.5 mm pitch, with exposed thermal pad - optimized for compact industrial control modules and space-constrained HMI designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual 1.8–5.5 V supply pins with decoupling requirements per datasheet Section 9.2 |
| XTAL, EXTAL | Main clock oscillator interface | Supports 1–20 MHz crystal or external clock input for system clock generation |
| RTC_VDD, RTC_VSS | Battery-backed RTC power domain | Enables calendar/timekeeping during main power loss using coin-cell backup |
| USB_DP, USB_DM | Full-speed USB differential pair | Compliant with USB 2.0 signaling; internal termination and pull-up resistor configurable |
| TXD5, RXD5 | SCI5 serial interface | Configurable as IrDA physical layer via SCI5; supports bit-rate modulation and event-link triggering |
| CTSU00–CTSU23 | Capacitive touch sensing inputs | 24 dedicated CTSU channels supporting self-capacitance (up to 24 keys) or mutual-capacitance matrix (up to 144 keys) |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit single-precision engine enabling real-time motor control math without software emulation overhead |
| Event Link Controller (ELC) | Direct hardware linkage between 61 event sources and peripherals - eliminates CPU polling and ISR latency for time-critical triggers |
| TSIP-Lite encryption | Hardware AES-128/256 (ECB/CBC/GCM), true RNG, and key protection - meets IEC 60730 Class B security requirements for firmware integrity |
| Low-power timer (LPT) | 16-bit counter running on sub-clock (32.768 kHz) or IWDT oscillator during software standby - enables wake-up every 2–32 s without exiting low-power state |
| Capacitive touch sensing unit (CTSU) | Self-diagnostic noise immunity, automatic drift compensation, and hardware-accelerated touch detection - reduces host CPU load by >70% vs. software-based solutions |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
Use Scenario: Touch-enabled front-panel interface with real-time energy display, tariff switching, and tamper detection. IC Role / Device Role / Timing Role: Main application MCU handling capacitive touch decoding, RTC-based billing cycles, and secure firmware updates via TSIP-Lite. Use Value: Integrated CTSU and 24-channel A/D eliminate external touch controller; USB device mode enables field calibration via PC tool without additional PHY. |
Use Scenario: DIN-rail mounted meter with pulse counting, voltage/current measurement, and remote communication via RS485/USB. IC Role / Device Role / Timing Role: System controller managing metrology ADC interface, RTC calendar for time-of-use billing, and USB/SCI-based data export. Use Value: 12-bit A/D with 0.83 µs conversion and per-channel sampling control ensures accurate RMS calculation; LVD circuits provide brown-out protection during grid fluctuations. |
| Medical Patient Monitor | Building Automation Node |
Use Scenario: Portable vital-signs monitor with ECG signal conditioning, LED indicators, and battery-backed event logging. IC Role / Device Role / Timing Role: Real-time signal processor with FPU for digital filtering, RTC for timestamped alarms, and low-power modes for extended battery life. Use Value: On-chip FPU accelerates FIR/IIR filter execution by 8× vs. integer-only cores; software standby + LPT extends runtime to >72 hours on coin-cell backup. |
Use Scenario: HVAC zone controller with temperature/humidity sensing, relay actuation, and BACnet/IP over Ethernet (via external PHY). IC Role / Device Role / Timing Role: Embedded controller interfacing analog sensors, driving GPIO-controlled relays, and managing secure OTA updates. Use Value: 5-V-tolerant GPIOs simplify direct connection to legacy HVAC actuators; TSIP-Lite prevents unauthorized firmware modification in unattended installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit industrial MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F52315ADFL#30 | Same RX231 Group core, identical flash/SRAM/CTSU specs, but in 48-pin LFQFP (PLQP0048KB-B) package | Requires PCB redesign due to different footprint (7×7 mm QFN vs. 7×7 mm LFQFP); same pin count but incompatible land pattern | Select for through-hole assembly or legacy board compatibility where QFN reflow is not available |
| R5F52305ADNE#U0 | RX230 Group variant: same 128 KB flash/32 KB RAM, but lacks CAN, SDHI, and USB OTG functionality; no TSIP-Lite encryption | Suitable for cost-sensitive non-secure applications without field-upgrade or bus communication requirements | Choose when USB/CAN/encryption are unnecessary and BOM cost reduction is primary objective |
Compared with R5F52315ADNE#20, R5F52315ADFL#30 offers identical functionality in a through-hole-compatible package, while R5F52305ADNE#U0 removes USB, CAN, and TSIP-Lite to reduce cost - making it suitable only for simpler, non-connected embedded control tasks.
Availability
R5F52315ADNE#20 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, medical patient monitors, and building automation nodes requiring stable component supply across multi-year production cycles.
Supply support for R5F52315ADNE#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 management ICs for industrial, automotive, and IoT applications.
The RX231 Group, which includes R5F52315ADNE#20, was designed for cost-optimized industrial control with integrated touch, security, and USB connectivity - targeting applications needing functional safety (IEC 60730) and long-term supply stability.
FAQ
What is the maximum operating frequency of the R5F52315ADNE#20 and under what voltage conditions?
The R5F52315ADNE#20 operates at a maximum frequency of 54 MHz, but only when supplied with VCC ≥ 2.7 V. At 1.8–2.4 V, the max frequency is limited to 8 MHz; at 2.4–2.7 V, it is 16 MHz. This voltage-frequency scaling is enforced by on-chip regulators and must be observed to ensure timing compliance and flash write reliability in the R5F52315ADNE#20.
Does the R5F52315ADNE#20 support USB device functionality without an external VCC_USB supply?
Yes, the R5F52315ADNE#20 includes an internal USB power supply that operates directly from the main VCC rail (4.0–5.5 V), eliminating the need for a separate 3.3 V regulator on the VCC_USB pin. This feature simplifies board design and reduces BOM cost while maintaining full USB 2.0 full-speed (12 Mbps) device compliance in the R5F52315ADNE#20.
How many capacitive touch channels does the R5F52315ADNE#20 support, and what configurations are available?
The R5F52315ADNE#20 integrates a CTSU supporting up to 24 self-capacitance channels (one key per pin) or up to 144 mutual-capacitance keys in matrix configuration (using 24 pins). All 24 CTSU channels are physically present and functional in the 48-pin PWQN0048KB-A package of the R5F52315ADNE#20, with hardware-accelerated scanning and noise rejection.
Is CAN bus communication supported on the R5F52315ADNE#20?
No, the R5F52315ADNE#20 does not include the RSCAN (CAN) module. According to Table 1.2 in the datasheet, CAN is only available in the RX230 Group (e.g., R5F52306ADNE#U0) and certain RX231 variants with larger packages (100-pin). The R5F52315ADNE#20 belongs to the RX231 Group's 48-pin configuration, which omits CAN while retaining USB, CTSU, and TSIP-Lite.
What debug interface does the R5F52315ADNE#20 use, and is JTAG supported?
The R5F52315ADNE#20 uses the FINE (Fast IN-Circuit Emulator) debug interface, a 2-pin proprietary Renesas protocol compatible with E2 studio and Renesas E2 emulator hardware. JTAG is not implemented; FINE provides full SWD-like capabilities including halt/resume, register access, and flash programming - all fully supported for development and production programming of the R5F52315ADNE#20.
R5F52315ADNE#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-WFQFN Exposed Pad
- Series:
- RX231
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RXv2
- Core Size:
- 32-Bit Single-Core
- Speed:
- 54MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, SSI, USB OTG
- Peripherals:
- Capacitive Touch, DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 128KB (128K 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 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F52315ADNE#20 FAQ
1.How can I place an order for R5F52315ADNE#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F52315ADNE#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 R5F52315ADNE#20 reliable?
The price and inventory of R5F52315ADNE#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F52315ADNE#20 is usually 5 days.
3.What payment methods are accepted for R5F52315ADNE#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F52315ADNE#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F52315ADNE#20?
R5F52315ADNE#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F52315ADNE#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 R5F52315ADNE#20?
For technical support, including R5F52315ADNE#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F52315ADNE#20 requirements.
6.How does Aetrix verify that R5F52315ADNE#20 is sourced from the original manufacturer or authorized distributors?
All R5F52315ADNE#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 R5F52315ADNE#20 meets industry standards.
7.What is the process for return or replacement of R5F52315ADNE#20?
All R5F52315ADNE#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F52315ADNE#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 R5F52315ADNE#20 part is unused and in its original packaging.
Return procedure for R5F52315ADNE#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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