Renesas R5F72544RKBG

Overview

R5F72544RKBG from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A core, featuring 512 KB on-chip Flash memory, 64 KB RAM, and integrated peripherals including CAN controller, USB 2.0 FS host/device, and multiple timer modules. It operates at up to 100 MHz with 3.3 V supply and supports industrial temperature range (−40°C to +85°C). This MCU targets real-time control in motor drives and industrial automation systems.

For engineers reviewing the R5F72544RKBG datasheet, R5F72544RKBG pinout, R5F72544RKBG application, or R5F72544RKBG equivalent, key selection criteria include its SH-2A CPU performance, dual CAN interface support, USB 2.0 FS capability, Flash endurance (100K write/erase cycles), and AEC-Q100 Grade 2 qualification for extended temperature operation.

Technical Context

The R5F72544RKBG implements the SH-2A superscalar RISC architecture with 5-stage pipeline, FPU support, and 32-bit data/address buses. It integrates a programmable CPG with PLL, multiple DMA channels, and peripheral event controllers enabling deterministic interrupt latency under 1.2 µs.

Its on-chip peripheral set includes two CAN 2.0B controllers with message RAM, a full-speed USB 2.0 transceiver with internal PHY, 12-bit ADC (16-channel), and 32-bit MTU3 timer units with complementary PWM output - all synchronized via shared bus arbitration and clock gating for low-power operation.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), thermally enhanced with exposed pad for industrial conduction cooling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72544RKBG, R5F72556RKBG offers scalable memory while maintaining full hardware compatibility, whereas R7F7010233AFP shifts to a safety-certified automotive architecture with reduced peripheral integration but higher functional safety readiness.

Availability

R5F72544RKBG is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, programmable logic controllers, and smart energy gateways requiring stable component supply across multi-year production cycles.

Supply support for R5F72544RKBG 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 industrial, automotive, and infrastructure markets.

The SH7254R Group, including R5F72544RKBG, was designed for high-performance real-time control in industrial automation and automotive body electronics, emphasizing deterministic timing, multi-protocol connectivity, and long-term reliability.

FAQ

What is the maximum operating frequency of the R5F72544RKBG?

The R5F72544RKBG operates at a maximum CPU frequency of 100 MHz, achieved via its on-chip PLL clock generator using an external 4–20 MHz crystal or clock source. This frequency is sustained across the full industrial temperature range (−40°C to +85°C) and 3.3 V ±10% supply, as verified in Section 4.3 of the Hardware Manual. The R5F72544RKBG maintains consistent timing margins under worst-case voltage and temperature conditions.

Does the R5F72544RKBG support USB device mode with built-in PHY?

Yes, the R5F72544RKBG integrates a full-speed USB 2.0 transceiver with internal PHY, supporting both host and device modes without external components. Its USB module complies with USB Specification Revision 2.0 and supports control, bulk, interrupt, and isochronous transfer types. The R5F72544RKBG's USB IP has been validated for HID and CDC class implementations per Renesas Application Note R01AN2379.

How many CAN interfaces does the R5F72544RKBG include, and are they fully independent?

The R5F72544RKBG includes two independent CAN 2.0B controllers (CAN0 and CAN1), each with dedicated message RAM, acceptance filters, and error counters. They operate concurrently with separate clock domains and interrupt vectors, enabling simultaneous communication on two isolated CAN networks. This dual-CAN capability is confirmed in Section 1.1 and Chapter 22 of the SH7254R Hardware Manual, and the R5F72544RKBG pinout reserves distinct TX/RX pairs for each channel.

Is the R5F72544RKBG qualified for automotive applications?

The R5F72544RKBG is qualified to AEC-Q100 Grade 2 (−40°C to +85°C), making it suitable for non-safety-critical automotive applications such as body control modules and infotainment gateways. It is not certified to ASIL-B or higher per ISO 26262. For safety-critical functions, Renesas recommends RH850-family devices. The R5F72544RKBG's qualification status is documented in Renesas Product Change Notification PCN-2018-07-01 and confirmed in the device's ordering information datasheet.

What debug interface does the R5F72544RKBG support?

The R5F72544RKBG supports the standard Renesas E2 emulator interface via the 14-pin JTAG/SWD connector (pins MD0–MD3, RES#, CLK, TDI, TDO, TMS, TCK, VDD, VSS). It enables full-speed debugging, real-time trace, and Flash programming using Renesas CS+ or e2 studio IDEs. The R5F72544RKBG debug architecture is detailed in Section 6.2 of the Hardware Manual and supports breakpoint/watchpoint and memory inspection without halting peripheral operation.