Renesas R5F52318AGNE#40

Overview

R5F52318AGNE#40 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 512 KB on-chip flash, 64 KB SRAM, and 8 KB data flash. It integrates a single-precision IEEE 754 FPU, 12-bit 24-channel ADC (0.83 µs conversion), dual 12-bit DACs, USB 2.0 full-speed host/function/OTG, CAN 2.0B, SD host interface, capacitive touch sensing (24 channels), and TSIP-Lite encryption engine. It targets industrial HMI and smart sensor nodes requiring secure, real-time control with mixed-signal and connectivity functions.

For engineers reviewing the R5F52318AGNE#40 datasheet, R5F52318AGNE#40 pinout, R5F52318AGNE#40 application, or R5F52318AGNE#40 equivalent, this MCU delivers deterministic real-time performance at 88.56 DMIPS, supports IEC60730 safety diagnostics, operates across −40 to +105°C, and enables compact designs via its 48-pin HWQFN (7 × 7 mm) package with 5-V-tolerant I/O and low-power timer operation in software standby mode.

Technical Context

The R5F52318AGNE#40 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code and 1-instruction-per-cycle execution at 54 MHz. It includes memory protection unit (MPU), on-chip debugging circuit, and CISC instruction set with 75 base instructions plus 23 DSP and 11 FPU extensions.

Its clock system features independent PLL, USB-dedicated PLL (4/6/8/12 MHz), sub-clock oscillator (32.768 kHz), and clock frequency accuracy measurement circuit (CAC). The ELC (Event Link Controller) enables 61 event types to trigger peripheral operations-including A/D conversion start and timer control-without CPU intervention, even during deep sleep.

Key Specifications

Pinout & Package

Packaged in a 48-pin HWQFN (PWQN0048KB-A) with 7 × 7 mm footprint, 0.5 mm pitch, and exposed thermal pad. Pinout validated per Renesas R01DS0261EJ0120 Rev.1.20, Table 1.2 and Figure 1.1 - supports 30 general-purpose I/O pins (RX231 Group, 48-pin variant), including 5-V-tolerant inputs, open-drain outputs, and configurable pull-ups.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52318AGNE#40, R5F52318BGNE#U0 adds production-grade security enforcement without changing pinout or power profile, while R5F52308AGFP#30 trades SDHI/CAN for external bus and I/O count-making it less suitable for space-constrained, connectivity-rich edge nodes.

Availability

R5F52318AGNE#40 is available at Aetrix Electronics and suitable for industrial HMI, smart sensor nodes, automotive body electronics, medical handhelds, and secure embedded gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F52318AGNE#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, power, and SoC solutions for industrial, automotive, and enterprise applications.

The RX231 Group-including R5F52318AGNE#40-is designed for high-integration, safety-aware embedded systems demanding real-time performance, low-power operation, and hardware security in harsh environments.

FAQ

What is the maximum operating frequency and core architecture of the R5F52318AGNE#40?

The R5F52318AGNE#40 operates at a maximum frequency of 54 MHz using the 32-bit RXv2 CPU core. This core implements a CISC Harvard architecture with a 5-stage pipeline, variable-length instructions, and ultra-compact code density. It achieves 88.56 DMIPS at 54 MHz and includes hardware support for floating-point (IEEE 754 single-precision), DSP multiply-accumulate, and memory protection (MPU).

Does the R5F52318AGNE#40 support USB and CAN interfaces simultaneously?

No-the R5F52318AGNE#40 supports either USB 2.0 full-speed host/function/OTG or CAN 2.0B, but not both concurrently. Per Table 1.2 in the datasheet, the 48-pin RX231 variant (including R5F52318AGNE#40) includes USB functionality and excludes CAN. CAN is only available on selected 64-pin and 100-pin RX230 Group parts-not on this specific 48-pin RX231 part.

What is the package type and thermal specification for R5F52318AGNE#40?

R5F52318AGNE#40 uses the PWQN0048KB-A package: a 48-pin HWQFN with 7 × 7 mm body, 0.5 mm pitch, and exposed thermal pad. It is rated for operation from −40 to +105°C (G version), making it suitable for under-hood automotive, industrial control, and outdoor equipment applications where extended temperature resilience is required.

How does the Event Link Controller (ELC) enhance real-time responsiveness in R5F52318AGNE#40?

The ELC in R5F52318AGNE#40 allows 61 internal and external event signals-including timer overflows, GPIO edges, and communication interrupts-to directly trigger peripheral actions (e.g., ADC conversion start, PWM period update, or DTC transfer) without CPU involvement. This reduces interrupt latency, lowers power consumption during sleep, and ensures deterministic timing for time-critical tasks like motor commutation or sensor sampling.

Is the R5F52318AGNE#40 qualified for IEC60730 Class B safety compliance?

Yes-the R5F52318AGNE#40 includes dedicated hardware features supporting IEC60730 Class B compliance: self-diagnostic assistance for the A/D converter and analog comparator, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test support via Data Operation Circuit (DOC), and voltage monitoring circuits with programmable thresholds. These are documented in Section 1.1 of R01DS0261EJ0120.