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Renesas R5F52318AGND#20
- Part No.:
- R5F52318AGND#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
R5F52318AGND#20.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:520
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Product details
Overview
R5F52318AGND#20 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 512 KB on-chip flash memory, 64 KB SRAM, and integrated FPU compliant to IEEE 754. It features USB 2.0 full-speed host/function/OTG, CAN interface (ISO 11898-1), 24-channel 12-bit A/D converter (0.83 µs conversion time), and capacitive touch sensing unit supporting up to 24 keys - deployed in industrial HMI and smart sensor nodes requiring real-time control and secure connectivity.
For engineers reviewing the R5F52318AGND#20 datasheet, R5F52318AGND#20 pinout, R5F52318AGND#20 application, or R5F52318AGND#20 equivalent, key selection considerations include its 64-pin HWQFN (PWQN0064KC-A) package, −40 to +105°C temperature grade (G version), absence of SDHI and CAN in this variant, and compatibility with Renesas' E2 studio and CS+ development tools.
Technical Context
The R5F52318AGND#20 belongs to the RX231 Group and implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions. It supports 88.56 DMIPS at 54 MHz and includes on-chip FPU, MPU, and TSIP-Lite encryption engine with AES-128/256, GCM, and true random number generation.
Its clock system integrates main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL (4–12.5 MHz input), and USB-dedicated PLL for independent 48 MHz USB clock generation. Power management includes three low-power modes, LPT running during software standby, and voltage detection circuits with 14-level programmable thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RXv2 32-bit CISC core with 5-stage pipeline, 88.56 DMIPS @ 54 MHz |
| Max Operating Frequency | 54 MHz system clock (ICLK); enables real-time deterministic execution for motor control and protocol stacks |
| Memory | 512 KB flash (no-wait up to 32 MHz), 64 KB SRAM (no-wait @ 54 MHz), 8 KB data flash (1M erase cycles) |
| Analog Peripherals | 24-channel 12-bit S12ADE A/D converter (0.83 µs min conversion), 2-channel 12-bit R12DAA D/A, TEMPSA temperature sensor |
| Communication Interfaces | USB 2.0 FS host/function/OTG (12 Mbps), 7× SCI (including LIN/IrDA), 1× I²C (400 kbps), 1× RSPI (16 Mbps), 1× CTSU (24-key self-capacitance) |
| Timers & Control | 6× TPU, 6× MTU2, 4× CMT, 1× IWDT (dedicated 15-kHz oscillator), RTC with calendar mode and event-triggered capture |
| Security & Compliance | TSIP-Lite with AES-128/256 (GCM/CBC/ECB), CRC calculator, IEC60730 self-test support for A/D, clock accuracy, RAM, and IWDT |
Pinout & Package
Package: PWQN0064KC-A - 64-pin HWQFN, 9 × 9 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant, rated for −40 to +105°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Core/analog/digital power domains; decoupling required per Renesas layout guidelines |
| XTAL, EXTAL | Main clock oscillator terminals | Support 1–20 MHz crystal; essential for high-accuracy timing and USB clock derivation |
| RTC_XTAL, RTC_EXTAL | Sub-clock oscillator terminals | Connect 32.768 kHz crystal for RTC/calendar operation and low-power timer reference |
| USB_VBUS, USB_DP, USB_DM | USB transceiver interface | Full-speed USB 2.0 physical layer; VBUS detection enables OTG role negotiation |
| TXD0, RXD0 | SCI0 asynchronous serial interface | UART debug/console port; supports baud rate generation and bit modulation for noise immunity |
| CTSU00–CTSU23 | Capacitive touch sense inputs | 24 dedicated pins for self-capacitance sensing; no external components needed for basic key detection |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant single-precision unit enabling fast math for sensor fusion and motor algorithms without software emulation |
| Event Link Controller (ELC) | Direct hardware triggering between 61 event sources and peripherals - eliminates CPU overhead and interrupt latency in time-critical sequences |
| Background Operation (BGO) | Data flash programming/erasing while CPU executes code - critical for firmware updates and parameter storage without system stall |
| Capacitive Touch Sensing Unit (CTSU) | Hardware-accelerated self-capacitance measurement with built-in noise rejection - supports robust touch UI in noisy industrial environments |
| TSIP-Lite Security Engine | Dedicated hardware AES/GCM engine with key protection and TRNG - enables secure boot, encrypted communication, and anti-cloning in connected devices |
Applications
| Industrial HMI Panel | Smart Sensor Node |
|---|---|
Use Scenario: Touch-enabled local control panel for PLC-connected machinery with real-time status display and alarm handling. IC Role / Device Role / Timing Role: Main controller executing UI rendering, CAN bus polling, and USB-based configuration update via host PC. Use Value: Integrated CTSU eliminates external touch controller; 54 MHz RXv2 core ensures <10 ms response to touch events and CAN message processing. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and vibration in factory equipment. IC Role / Device Role / Timing Role: System-on-chip managing sensor acquisition (A/D), wireless data prep (USB/SCI), and ultra-low-power sleep scheduling. Use Value: LPT and deep-sleep mode enable >1-year battery life; on-chip temperature sensor reduces BOM cost and calibration complexity. |
| USB-Capable Test Instrument | IEC 60730-Certified Appliance Controller |
Use Scenario: Portable calibration tool with USB device mode for PC communication and SCI-based instrument control. IC Role / Device Role / Timing Role: USB 2.0 full-speed device endpoint with embedded transceiver and SCI-to-USB bridge logic. Use Value: No external PHY required; internal USB regulator allows direct VCC-powered operation (4.0–5.5 V), simplifying power design. |
Use Scenario: Safety-critical white goods controller requiring Class B compliance per IEC 60730. IC Role / Device Role / Timing Role: Primary MCU performing RAM test, clock accuracy monitoring, A/D self-diagnostic, and watchdog supervision. Use Value: Hardware-assisted diagnostics (DOC, TSIP-Lite, IWDT) reduce software validation effort and meet mandatory runtime checks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F52318AGFP#30 | Same RX231 Group, identical peripherals and memory, but in 100-pin LFQFP (PLQP0100KB-B) package | Supports full peripheral set including external bus and more GPIO; requires larger PCB area and different layout | Select when additional I/O, external memory expansion, or legacy QFP assembly is required |
| R5F52318BGND#U0 | Pin-compatible variant with enhanced security: TSIP-Lite enabled and flash security lock active by default | Required for designs needing certified secure boot, encrypted firmware storage, or anti-tampering features | Choose for connected IoT endpoints where firmware IP protection and secure OTA updates are mandatory |
Compared with R5F52318AGND#20, R5F52318AGFP#30 offers greater I/O and bus expansion at the cost of footprint and thermal performance, while R5F52318BGND#U0 trades default security configuration for identical form-factor operation - making the AGND variant optimal for cost-sensitive, non-security-critical industrial controls.
Availability
R5F52318AGND#20 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, USB-capable test instruments, and IEC 60730-certified appliance controllers requiring stable component supply across extended temperature ranges.
Supply support for R5F52318AGND#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.
The RX231 Group, including R5F52318AGND#20, is engineered for high-performance, low-power industrial control and human-machine interface applications - balancing rich peripheral integration, functional safety readiness, and real-time determinism.
FAQ
What is the operating temperature range of the R5F52318AGND#20?
The R5F52318AGND#20 is rated for −40 to +105°C operation, corresponding to the 'G' grade in Renesas' part numbering. This extended temperature range enables reliable deployment in demanding industrial environments such as factory automation cabinets and outdoor equipment enclosures where ambient heat buildup occurs.
Does the R5F52318AGND#20 include CAN or SD host interface functionality?
No, the R5F52318AGND#20 does not include CAN or SD host interface (SDHI) modules. According to Table 1.2 in the datasheet, these functions are disabled in the 64-pin HWQFN (PWQN0064KC-A) package variant. The R5F52318AGND#20 retains USB 2.0, SCI, I²C, RSPI, CTSU, and A/D - but omits CAN and SDHI to optimize die size and cost for targeted applications.
What development tools support the R5F52318AGND#20?
The R5F52318AGND#20 is fully supported by Renesas' E2 studio IDE, CS+ (formerly CubeSuite+), and the Renesas Flash Programmer. Debugging uses the FINE interface over SWD; evaluation is possible using the RX231-RSK board (YRDKRX231) or custom carrier boards with compatible 64-pin HWQFN footprint and power sequencing.
How is the USB interface powered on the R5F52318AGND#20?
The R5F52318AGND#20 integrates an internal USB regulator that draws power directly from VCC (4.0–5.5 V) - eliminating the need for an external VCC_USB supply. This allows full-speed USB operation without additional regulators or power routing, simplifying board design and reducing BOM count for self-powered USB devices.
Is the R5F52318AGND#20 pin-compatible with other RX231 Group MCUs in the same package?
Yes, the R5F52318AGND#20 shares identical pinout and electrical characteristics with other RX231 Group devices in the PWQN0064KC-A package (e.g., R5F52317AGND#U0, R5F52316AGND#U0). Pin compatibility enables hardware reuse across memory variants, provided firmware accounts for differences in flash size, RAM, and enabled peripherals per datasheet Table 1.2.
R5F52318AGND#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 43
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F52318AGND#20 FAQ
1.How can I place an order for R5F52318AGND#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F52318AGND#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 R5F52318AGND#20 reliable?
The price and inventory of R5F52318AGND#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F52318AGND#20 is usually 5 days.
3.What payment methods are accepted for R5F52318AGND#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F52318AGND#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F52318AGND#20?
R5F52318AGND#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F52318AGND#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 R5F52318AGND#20?
For technical support, including R5F52318AGND#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F52318AGND#20 requirements.
6.How does Aetrix verify that R5F52318AGND#20 is sourced from the original manufacturer or authorized distributors?
All R5F52318AGND#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 R5F52318AGND#20 meets industry standards.
7.What is the process for return or replacement of R5F52318AGND#20?
All R5F52318AGND#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F52318AGND#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 R5F52318AGND#20 part is unused and in its original packaging.
Return procedure for R5F52318AGND#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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