Renesas R5F52318AGNE#20

Overview

R5F52318AGNE#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 with IEEE754 single-precision floating-point standard. It features USB 2.0 full-speed host/function/OTG, CAN interface (ISO11898-1), 24-channel 12-bit A/D converter (0.83 µs conversion time), and capacitive touch sensing unit supporting up to 24 self-capacitance keys - deployed in industrial HMI and smart sensor edge nodes.

For engineers reviewing the R5F52318AGNE#20 datasheet, R5F52318AGNE#20 pinout, R5F52318AGNE#20 application, or R5F52318AGNE#20 equivalent, this device delivers deterministic real-time control with ELC event-driven peripheral coordination, low-power software standby mode with LPT operation, and IEC60730-compliant self-test functions for safety-critical embedded systems.

Technical Context

The R5F52318AGNE#20 implements the RXv2 CPU core with 5-stage CISC Harvard pipeline, variable-length instructions, and hardware divider completing in two clock cycles. It integrates an on-chip memory protection unit (MPU), 32-bit multiplier, barrel shifter, and fast interrupt response supporting 167 vectors with 16 priority levels.

Its clock system includes main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL (4–12.5 MHz input), USB-dedicated PLL (4/6/8/12 MHz), and independent IWDT oscillator. Peripheral clocks are independently configurable: ICLK at 54 MHz, PCLKA/PCLKD at 54 MHz, PCLKB/BCLK/FCLK at 32 MHz.

Key Specifications

Pinout & Package

PWQN0048KB-A is a 48-pin wettable flank QFN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pinout conforms to RX231 Group 48-pin configuration per Table 1.2: supports 30 general I/O ports (5-V tolerant, open-drain capable), 8 external interrupt pins (IRQ0–IRQ7, NMI), and dedicated function pins for USB, CAN, SDHI, and CTSU.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit MCU applications.

Compared with R5F52318AGFP#30, R5F52318AGNE#20 trades SDHI and external bus capability for compact 7×7 mm QFN packaging and lower power consumption; versus R5F52317AGNE#U0, it delivers 128 KB more flash and 32 KB more RAM while retaining identical pinout and peripheral feature set.

Availability

R5F52318AGNE#20 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, medical diagnostic tools, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for R5F52318AGNE#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 industrial, automotive, and IoT markets.

The RX231 Group - including R5F52318AGNE#20 - is designed for high-performance, safety-aware embedded applications demanding real-time responsiveness, low-power operation, and integrated security in compact packages.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F52318AGNE#20?

The R5F52318AGNE#20 operates at a maximum frequency of 54 MHz using the 32-bit RXv2 CPU core. This core features a 5-stage CISC Harvard pipeline, variable-length instructions, hardware floating-point unit (IEEE754 compliant), and 88.56 DMIPS performance. Its architecture supports fast interrupt response, memory protection unit (MPU), and deterministic real-time execution critical for industrial control and protocol stacks.

Does the R5F52318AGNE#20 support USB and CAN interfaces?

Yes, the R5F52318AGNE#20 integrates a USB 2.0 full-speed host/function/OTG module supporting 12 Mbps transfer, isochronous transfers, and BC1.2 battery charging negotiation. It also includes one CAN channel compliant with ISO11898-1, capable of 1 Mbps operation. Both interfaces are fully functional in the 48-pin PWQN0048KB-A package, with dedicated pins and on-chip transceivers requiring minimal external components.

What are the memory resources available on the R5F52318AGNE#20?

The R5F52318AGNE#20 includes 512 KB of on-chip flash memory (with no-wait access up to 32 MHz), 64 KB of SRAM (no-wait at 54 MHz), and 8 KB of data flash rated for 1,000,000 program/erase cycles. Flash supports background operation (BGO) and programming at 1.8 V. The memory map is linear 4-Gbyte address space, with MPU-enforced protection zones for secure code and data partitioning.

Is the R5F52318AGNE#20 suitable for IEC60730-certified applications?

Yes, the R5F52318AGNE#20 includes hardware-assisted IEC60730 compliance features: self-diagnostic A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via Data Operation Circuit (DOC), and analog input disconnection detection. These functions are documented in the R01DS0261EJ0120 datasheet and enable Class B safety certification without external supervision circuitry.

What is the package type and operating temperature range of the R5F52318AGNE#20?

The R5F52318AGNE#20 uses the PWQN0048KB-A package: a 48-pin wettable flank QFN measuring 7 × 7 mm with 0.5 mm pitch and exposed thermal pad. It is rated for industrial temperature range −40 to +105°C (G version), making it suitable for under-hood automotive, factory floor, and outdoor embedded applications where thermal robustness is essential.