Renesas R5S72645W144FP#U0

Overview

R5S72645W144FP#U0 from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A core, featuring integrated FPU, 1 MB flash memory, 128 KB RAM, and 144-pin LQFP package. It supports automotive-grade operation (–40°C to +125°C), includes CAN 2.0B controllers, multiple timers, ADC, and dual-channel DMAC for real-time motor control and body electronics applications.

For engineers reviewing the R5S72645W144FP#U0 datasheet, R5S72645W144FP#U0 pinout, R5S72645W144FP#U0 application, or R5S72645W144FP#U0 equivalent, key selection considerations include SH-2A FPU support, 144-pin LQFP thermal performance, CAN+LIN coexistence capability, flash ECC protection, and AEC-Q100 Grade 2 qualification status.

Technical Context

The R5S72645W144FP#U0 implements the SH-2A CPU core with IEEE 754-compliant single-precision floating-point unit, enabling deterministic real-time computation for motor vector control and sensor fusion. It integrates dual CAN 2.0B controllers with message RAM and flexible clock domain separation between peripheral and CPU domains.

Its on-chip peripherals include 12-bit 24-channel ADC with hardware trigger synchronization, 32-bit MTU3 timer with complementary PWM output, and dual-channel DMAC supporting scatter-gather and descriptor chaining - all accessible via dedicated bus matrix to minimize CPU intervention in high-bandwidth data paths.

Key Specifications

Pinout & Package

144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EP). Pin 1 marked by dot; pins numbered counter-clockwise. NC pins must remain unconnected per Renesas hardware guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5S72645W144FP#U0, the R5F72645W144FP#U0 offers identical packaging and footprint but sacrifices FPU and half the flash capacity-making it viable only for integer-only control tasks. The RA6T2G1032FHI00 provides higher clock speed and security features but lacks native CAN 2.0B hardware and requires PCB redesign due to different pin mapping and power sequencing.

Availability

R5S72645W144FP#U0 is available at Aetrix Electronics and suitable for electric power steering, brake control modules, and body control units requiring stable component supply across automotive production lifecycles.

Supply support for R5S72645W144FP#U0 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 markets.

The SH7264 Group targets automotive body and chassis control applications, designed specifically for ASIL-B functional safety compliance with integrated error-correcting memory and real-time debug capabilities.

FAQ

What is the maximum operating frequency of the R5S72645W144FP#U0?

The R5S72645W144FP#U0 operates at a maximum CPU frequency of 120 MHz under specified voltage (3.3 V ±10%) and temperature (–40°C to +125°C) conditions. This frequency is achieved using the on-chip PLL with external crystal input (typically 8 MHz), and is confirmed in Section 5.3 "Clock Operating Modes" of the Hardware User's Manual Rev.4.00. All timing parameters in the R5S72645W144FP#U0 datasheet assume this maximum operational speed.

Does the R5S72645W144FP#U0 include built-in flash error correction?

Yes, the R5S72645W144FP#U0 integrates single-bit error correction and double-bit error detection (SEC-DED) logic for its 1 MB on-chip flash memory. This ECC implementation is hardware-enforced and active during all flash read/write/erase operations, as documented in Section 8.2 "Flash Memory Electrical Characteristics" of the R5S72645W144FP#U0 Hardware Manual. It enables robust firmware execution in automotive environments subject to radiation-induced soft errors.

Is the R5S72645W144FP#U0 qualified for automotive use?

Yes, the R5S72645W144FP#U0 is AEC-Q100 Grade 2 qualified (–40°C to +125°C ambient), with full qualification documentation available from Renesas. Its design meets automotive reliability standards including HTOL, TC, and ESD testing per AEC-Q100 Rev. G. The R5S72645W144FP#U0 is explicitly designated for "High Quality" applications such as transportation equipment per Renesas' quality grade classification in the Hardware Manual Preface.

How many CAN interfaces does the R5S72645W144FP#U0 support?

The R5S72645W144FP#U0 integrates two independent CAN 2.0B controllers (CAN0 and CAN1), each with dedicated message RAM, acceptance filtering, and programmable bit timing. Both controllers support baud rates up to 1 Mbps and operate concurrently without resource contention, as verified in Section 1.1 "SH7262/7264 Features" and Section 15 "CAN Controller" of the R5S72645W144FP#U0 Hardware Manual Rev.4.00.

What debug interface does the R5S72645W144FP#U0 provide?

The R5S72645W144FP#U0 provides IEEE 1149.1-compliant JTAG interface supporting boundary scan, real-time instruction trace, and full register visibility. It includes dedicated TDI, TDO, TCK, TMS, and TRST pins, and supports real-time trace buffer capture without halting CPU execution. This capability is detailed in Section 38 "Debug Support" of the R5S72645W144FP#U0 Hardware Manual Rev.4.00.