Renesas R5F5651EHGLJ#20

Overview

R5F5651EHGLJ#20 from Renesas is a 120-MHz 32-bit RXv2 MCU with single-precision FPU, 240 DMIPS performance, 2 MB on-chip code flash (dual-bank), 640 KB SRAM, and integrated Ethernet MAC, CAN, SD host/slave, QSPI, and GLCDC. It serves as a high-integration application processor for industrial HMI, networked gateways, and secure edge controllers operating from 2.7–3.6 V.

For engineers reviewing the R5F5651EHGLJ#20 datasheet, R5F5651EHGLJ#20 pinout, R5F5651EHGLJ#20 application, or R5F5651EHGLJ#20 equivalent, key selection criteria include its 176-pin LFBGA package, -40°C to +105°C extended temperature grade (G-version), TSIP-based AES-128/192/256 encryption, dual 12-bit A/D converters (29 total channels), and real-time clock with battery backup support.

Technical Context

The R5F5651EHGLJ#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code and fast interrupt response. It integrates a memory protection unit (MPU) and Trusted Memory (TM) for IEC60730-compliant safety-critical firmware execution.

Clocking is managed via multiple sources: external crystal (8–24 MHz), internal HOCO (16/18/20 MHz), LOCO (240 kHz), and dedicated IWDT oscillator (120 kHz). Peripheral clocks are independently configurable-PCLKA up to 120 MHz (for ETHERC, DRW2D), PCLKB up to 60 MHz (for TMR, CMT, S12AD unit 0), and PCLKD up to 60 MHz (for S12AD unit 1).

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin Low-Profile Fine-Pitch Ball Grid Array (LFBGA), 24 mm × 24 mm body, 0.5 mm ball pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F5651EHGLJ#20, the R5F5651EHLGB#20 reduces package size and memory but sacrifices display integration and thermal range; the R5F5661EHFLJ#20 increases compute headroom and adds CAN FD yet removes all graphics accelerators-making R5F5651EHGLJ#20 optimal for integrated HMI+network edge nodes.

Availability

R5F5651EHGLJ#20 is available at Aetrix Electronics and suitable for industrial gateways, secure HMI terminals, smart energy meters, and networked motor drives requiring stable component supply across extended temperature and long product lifecycles.

Supply support for R5F5651EHGLJ#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RX651 Group-including R5F5651EHGLJ#20-is engineered for high-reliability industrial edge devices requiring integrated networking, real-time control, security, and human-machine interface capabilities.

FAQ

What is the maximum operating frequency and core architecture of the R5F5651EHGLJ#20?

The R5F5651EHGLJ#20 operates at a maximum frequency of 120 MHz using the 32-bit RXv2 CPU core. This core features a 5-stage pipeline, Harvard architecture, variable-length instructions, and supports 240 DMIPS performance. It includes hardware floating-point unit (FPU) compliant with IEEE-754 single-precision standard, making it suitable for real-time signal processing and motor control tasks.

Does the R5F5651EHGLJ#20 support Ethernet connectivity, and what interface modes are available?

Yes, the R5F5651EHGLJ#20 integrates a full-featured Ethernet MAC supporting both 10 Mbps and 100 Mbps operation. It supports Media Independent Interface (MII) and Reduced MII (RMII) standards per IEEE 802.3u. The device includes dedicated DMA for Ethernet (EDMAC), 2 KB transmit and receive FIFOs, Magic Packet™ detection, and flow control per IEEE 802.3x-enabling robust, low-CPU-load network communication in the R5F5651EHGLJ#20.

What security features does the R5F5651EHGLJ#20 provide for firmware and data protection?

The R5F5651EHGLJ#20 includes Trusted Secure IP (TSIP) hardware acceleration for AES-128/192/256 encryption, CRC calculation (8/32-bit), memory protection unit (MPU), register write protection, and self-diagnostic A/D functions. These features collectively support IEC60730 Class B compliance and enable secure boot, encrypted OTA updates, and tamper-resistant data logging-all implemented directly in the R5F5651EHGLJ#20 silicon.

How many analog-to-digital converter (A/D) channels does the R5F5651EHGLJ#20 have, and what resolution options are supported?

The R5F5651EHGLJ#20 integrates two independent 12-bit A/D converter units: S12AD unit 0 with 8 input channels and unit 1 with 21 input channels-totaling 29 configurable analog inputs. Resolution is software-selectable at 8-, 10-, or 12-bit depth. Conversion time is 0.42 µs (8-bit), 0.45 µs (10-bit), or 0.48 µs (12-bit) per channel, and both units support scan modes, group priority, and self-diagnostic voltage generation.

What display-related peripherals are integrated into the R5F5651EHGLJ#20, and how do they reduce external component count?

The R5F5651EHGLJ#20 integrates a Graphic-LCD Controller (GLCDC) supporting 3-layer overlay (background + 2 graphics planes), multiple pixel formats (32/16/8/4/1 bpp), and CLUT-based color mapping-and a 2D Drawing Engine (DRW2D) for hardware-accelerated vector rendering and bit-blitting. Together, these eliminate the need for external frame buffer RAM, GPU, or display bridge ICs, significantly simplifying BOM and PCB layout in HMI designs based on the R5F5651EHGLJ#20.