Renesas R5F51135ADFP#1A

Overview

R5F51135ADFP#1A from Renesas Electronics is a 32-bit RXv2 core microcontroller in 64-pin LQFP package, operating at up to 50 MHz with 512 KB flash, 64 KB RAM, and integrated USB 2.0 FS host/device controller - used as the main application processor in the RX65N Cloud Kit for AWS IoT connectivity and sensor data aggregation.

For engineers reviewing the R5F51135ADFP#1A datasheet, R5F51135ADFP#1A pinout, R5F51135ADFP#1A application, or R5F51135ADFP#1A equivalent, this MCU serves as the system-on-module controller enabling secure Wi-Fi–enabled cloud telemetry, real-time sensor processing, and TLS-secured MQTT communication in industrial edge node designs.

Technical Context

The R5F51135ADFP#1A implements the RXv2 CPU core with 32-bit superscalar architecture, supporting DSP-like instructions and fast interrupt response (≤5 cycles). It integrates a 12-bit ADC (16 channels), 32-bit general-purpose timers, and a dedicated hardware crypto engine (AES-128/256, SHA-256, RSA-2048) for secure boot and TLS offload.

Its peripheral set includes USB 2.0 FS controller with on-chip PHY, CAN FD interface, multiple UART/SPI/I²C channels, and a 16-channel event link controller for deterministic inter-peripheral routing - all configured via the RX Family's register-based peripheral control model without external glue logic.

Key Specifications

Availability

R5F51135ADFP#1A is available at Aetrix Electronics and suitable for industrial IoT gateways, cloud-connected sensor nodes, and embedded AWS IoT Core edge devices requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.

Supply support for R5F51135ADFP#1A 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R5F51135ADFP#1A belongs to the RX65N Group - designed specifically for secure, cloud-connected edge applications with integrated crypto acceleration, USB connectivity, and robust real-time OS support.

FAQ

What is the maximum operating frequency of the R5F51135ADFP#1A?

The R5F51135ADFP#1A operates at a maximum CPU clock frequency of 50 MHz. This speed is achieved using the on-chip PLL with external crystal input (typically 4–20 MHz), and it sustains full peripheral functionality including USB, ADC, and crypto engine operation without throttling. The R5F51135ADFP#1A maintains timing compliance across its specified industrial temperature range (−40°C to +85°C).

Does the R5F51135ADFP#1A include hardware cryptographic acceleration?

Yes, the R5F51135ADFP#1A integrates a dedicated hardware crypto engine supporting AES-128/256 encryption/decryption, SHA-256 hashing, and RSA-2048 signature generation/verification. This enables TLS 1.2/1.3 offload in AWS IoT Core applications and is used directly by the Secure Boot ROM and Renesas' Trusted Secure IP (TSIP) middleware. The R5F51135ADFP#1A does not require external security ICs for basic cloud authentication.

What development tools support the R5F51135ADFP#1A?

The R5F51135ADFP#1A is supported by Renesas e² studio IDE, CS+ (formerly CubeSuite+), and IAR Embedded Workbench for RX. Debugging uses E2 Lite or E2 emulator via SWD interface. The R5F51135ADFP#1A is also validated with FreeRTOS, Azure RTOS ThreadX, and Renesas' own RI65N middleware stack for AWS IoT and sensor abstraction layers.

Is the R5F51135ADFP#1A pin-compatible with other RX65N Group MCUs?

The R5F51135ADFP#1A shares the same 64-pin LQFP package and pinout with other RX65N Group members such as R5F51136ADFP#1A and R5F51137ADFP#1A, differing only in flash/RAM size and peripheral enablement. Pin-to-pin compatibility allows drop-in replacement within the same package variant, provided firmware accounts for memory map and peripheral register differences. The R5F51135ADFP#1A retains identical USB, CAN FD, and ADC pin assignments across this family subset.

What is the role of the R5F51135ADFP#1A in the RX65N Cloud Kit?

In the RX65N Cloud Kit, the R5F51135ADFP#1A acts as the primary application controller - executing the AWS IoT SDK, managing Wi-Fi provisioning via serial console, handling sensor data acquisition (via onboard HTS221, LSM6DSL), and performing TLS-encrypted MQTT publishing to AWS IoT Core. The R5F51135ADFP#1A drives the entire cloud telemetry workflow without external host processor involvement.