Renesas R5F51136ADFP#1A

Overview

R5F51136ADFP#1A from Renesas Electronics is a 32-bit RXv2 core microcontroller in 100-pin LQFP package, featuring 512 KB flash, 128 KB RAM, and integrated Ethernet MAC, USB 2.0 FS, and CAN FD controller - deployed as the main application processor on the RX65N Cloud Kit for AWS IoT edge connectivity and sensor data aggregation.

For engineers reviewing the R5F51136ADFP#1A datasheet, R5F51136ADFP#1A pinout, R5F51136ADFP#1A application, or R5F51136ADFP#1A equivalent, key selection criteria include its dual-bank flash for safe firmware updates, hardware crypto acceleration (AES-128/256, SHA-256, TRNG), and support for TLS 1.2 via integrated security IP - critical for secure cloud onboarding in industrial IoT gateways.

Technical Context

The R5F51136ADFP#1A implements the RXv2 CPU core with 200 MHz max operation, 5-stage pipeline, and FPU, enabling deterministic real-time execution for concurrent sensor processing, network stack handling (TCP/IP, MQTT-SN), and secure TLS handshake offload. It integrates a dedicated SDRAM controller supporting up to 256 MB external memory for dashboard rendering buffers and OTA image staging.

Its peripheral set includes a 12-bit ADC (16 channels), 3x 16-bit timers with PWM output, and a programmable interrupt controller supporting 240 priority levels - configured in the RX65N Cloud Kit to sample temperature/humidity/accelerometer data and drive Wi-Fi module communication via UART and SPI interfaces.

Key Specifications

Availability

R5F51136ADFP#1A is available at Aetrix Electronics and suitable for industrial IoT gateways, cloud-connected sensor hubs, and secure edge node deployments requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.

Supply support for R5F51136ADFP#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, and power devices for automotive, industrial, and IoT applications.

The RX65N Group - including R5F51136ADFP#1A - was designed specifically for secure, cloud-connected edge devices requiring TLS-accelerated communication, dual-bank firmware update capability, and integrated sensor interface peripherals.

FAQ

What is the primary function of the R5F51136ADFP#1A in the RX65N Cloud Kit?

The R5F51136ADFP#1A serves as the main application MCU in the RX65N Cloud Kit, executing the AWS IoT SDK, managing sensor data acquisition (via ADC and I²C), handling TLS-secured MQTT communication over Wi-Fi/Ethernet, and coordinating secure credential provisioning. Its dual-bank flash and hardware crypto engine make R5F51136ADFP#1A essential for reliable, production-grade cloud onboarding.

Does the R5F51136ADFP#1A support CAN FD, and how is it used in practice?

Yes, the R5F51136ADFP#1A integrates a CAN FD controller compliant with ISO 11898-1:2015, supporting data rates up to 5 Mbps and payloads up to 64 bytes. In field-deployed systems, R5F51136ADFP#1A uses CAN FD to aggregate data from industrial sensors or PLCs before forwarding to the cloud via Ethernet or Wi-Fi - enabling legacy bus integration without protocol translation gateways.

How does the R5F51136ADFP#1A handle secure boot and firmware updates?

R5F51136ADFP#1A implements ROM-resident secure boot that validates digital signatures of the application image using ECDSA-P256 before execution. Its 512 KB dual-bank flash allows background programming of the inactive bank while running from the active bank - ensuring zero-downtime updates. This architecture is leveraged directly in R5F51136ADFP#1A-based deployments for OTA reliability.

What development tools are officially supported for the R5F51136ADFP#1A?

Renesas provides e² studio IDE with GCC-based RX compiler, CS+ (formerly High-performance Embedded Workshop), and the Renesas Flash Programmer for R5F51136ADFP#1A. The RX65N Cloud Kit includes pre-flashed demo firmware, and R5F51136ADFP#1A is fully supported by the Flexible Software Package (FSP) v4.x, which delivers HAL drivers, middleware stacks (including AWS IoT Embedded C SDK port), and security libraries.

Is the R5F51136ADFP#1A pin-compatible with other RX65N Group MCUs?

No - the R5F51136ADFP#1A is a specific 100-pin LQFP variant within the RX65N family. While it shares the same RXv2 core and peripheral IP blocks with other RX65N devices (e.g., R5F51135ADFP#1A), pin assignments differ across package options (64-, 80-, 100-, 144-pin). R5F51136ADFP#1A requires its own layout; no pin-to-pin compatibility exists with smaller or larger RX65N variants.