Renesas R5F5651CDGLC#20

Overview

R5F5651CDGLC#20 from Renesas is a 32-bit RXv2 core microcontroller operating at up to 120 MHz, delivering 240 DMIPS and integrated single-precision IEEE-754 FPU. It integrates 1 MB code flash, 640 KB SRAM (256 KB main + 384 KB expansion), dual-bank flash for background programming, and supports Ethernet MAC, CAN, USB 2.0 FS, SD host/slave, QSPI, and GLCDC for industrial HMI applications.

For engineers reviewing the R5F5651CDGLC#20 datasheet, R5F5651CDGLC#20 pinout, R5F5651CDGLC#20 application, or R5F5651CDGLC#20 equivalent, key selection criteria include its 176-pin LFBGA package (PLQP0176KB-A), -40°C to +85°C temperature grade, dual 12-bit A/D converters (29 total channels), 2-channel 12-bit D/A, and hardware encryption (AES-128/192/256 + TSIP) for secure firmware updates.

Technical Context

The R5F5651CDGLC#20 implements the RXv2 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It features dual-bank flash supporting concurrent read-while-write operations and a memory protection unit (MPU) with eight configurable regions for safety-critical partitioning.

Clock subsystem includes PLL-based 120 MHz system clock (ICLK), independent peripheral clocks (PCLKA up to 120 MHz for ETHERC/DRW2D, PCLKB up to 60 MHz for most peripherals), and dedicated IWDT oscillator. Real-time clock (RTC) operates from sub-clock or main clock with battery backup via VBATT and supports time capture, leap-year correction, and binary counting modes.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin Low-Profile Fine-Pitch Ball Grid Array, 24 mm × 24 mm, 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 R5F5651CDGLC#20, R5F5651EDGLC#20 offers extended flash headroom while maintaining identical I/O and timing behavior, whereas R5F566TEADFP#30 trades graphics and SD interfaces for deterministic motor-control peripherals in a smaller package-making it unsuitable for HMI but superior for motion applications.

Availability

R5F5651CDGLC#20 is available at Aetrix Electronics and suitable for industrial HMI panels, secure gateways, smart energy meters, and medical data loggers requiring stable component supply across long product lifecycles.

Supply support for R5F5651CDGLC#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 automotive, industrial, and IoT markets.

The RX651 Group, including R5F5651CDGLC#20, is engineered for industrial human-machine interfaces and secure connectivity applications, integrating graphics acceleration, cryptographic security, and multi-protocol communication in a single chip.

FAQ

What is the maximum operating frequency and CPU performance of the R5F5651CDGLC#20?

The R5F5651CDGLC#20 operates at a maximum frequency of 120 MHz using the RXv2 CPU core and delivers 240 DMIPS of processing performance. Its single-precision IEEE-754 floating-point unit (FPU) enables efficient math-intensive tasks such as sensor fusion or real-time signal processing without software emulation overhead. This performance level is confirmed in the official Renesas datasheet R01DS0276EJ0240 Rev.2.40.

Does the R5F5651CDGLC#20 support secure boot and cryptographic operations?

Yes, the R5F5651CDGLC#20 includes hardware-accelerated AES encryption (128/192/256-bit keys) and the Trusted Secure IP (TSIP) module for secure key storage, random number generation, and secure boot verification. These features are documented in the R01DS0276EJ0240 datasheet and enable compliance with IEC 62443 and other industrial security standards. The R5F5651CDGLC#20 uses TSIP to protect firmware integrity during field updates.

What graphics capabilities does the R5F5651CDGLC#20 provide for HMI development?

The R5F5651CDGLC#20 integrates both a Graphic-LCD Controller (GLCDC) and a 2D Drawing Engine (DRW2D). The GLCDC supports 3-plane overlay (background, graphic 1, graphic 2) and multiple pixel formats (32/16/8/4/1 bpp), while DRW2D accelerates bit blitting, vector drawing, and texture mapping. These capabilities allow smooth GUI rendering without external graphics processors-confirmed in Section 1.1 and Table 1.1 of the R01DS0276EJ0240 datasheet for R5F5651CDGLC#20.

How many A/D and D/A converter channels does the R5F5651CDGLC#20 have, and what are their resolutions?

The R5F5651CDGLC#20 includes two independent 12-bit A/D converters: S12AD0 with 8 input channels and S12AD1 with 21 input channels, both supporting 8-/10-/12-bit selectable resolution and conversion times as fast as 0.48 µs per channel. It also provides two 12-bit D/A channels (R12DA) with programmable buffered or unbuffered output. These specifications are fully detailed in Tables 1.1 and 1.2 of the R01DS0276EJ0240 datasheet for R5F5651CDGLC#20.

What communication interfaces are integrated into the R5F5651CDGLC#20?

The R5F5651CDGLC#20 integrates Ethernet MAC (10/100 Mbps MII/RMII), dual CAN 2.0B controllers (32 mailboxes per channel), USB 2.0 Full-Speed host/function/OTG, SD host/slave interfaces, three RSPI channels, one QSPI channel, three I²C buses (up to 1 Mbps), and up to 13 SCI channels with flexible mode support. All are confirmed in the "Communication function" section of the R01DS0276EJ0240 datasheet and validated for use in R5F5651CDGLC#20's 176-pin LFBGA package.