Renesas R5F72145BDFA#V1

Overview

R5F72145BDFA#V1 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, 12-bit ADC (16 channels), and MTU2S timer unit. It operates at up to 80 MHz and targets automotive body control modules requiring ASIL-B capable MCU functionality.

For engineers reviewing the R5F72145BDFA#V1 datasheet, R5F72145BDFA#V1 pinout, R5F72145BDFA#V1 application, or R5F72145BDFA#V1 equivalent, key selection criteria include CAN interface support, USB 2.0 full-speed capability, Flash write/erase endurance (100K cycles), operating temperature range (−40°C to +125°C), and compliance with AEC-Q100 Grade 2.

Technical Context

The R5F72145BDFA#V1 implements the SH-2A CPU core with FPU support, executing instructions in a five-stage pipeline with branch prediction. It integrates a CPG with PLL for clock generation, supporting multiple clock sources including crystal (4–20 MHz), ceramic resonator (48 MHz for USB), and external clock input.

System-level features include an interrupt controller (INTC) with 128 vectors, data transfer controller (DTC) for autonomous peripheral-to-memory transfers, and bus controller (BSC) enabling flexible external memory interface configuration with wait-state control and burst access support.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72144BDFA#V1 and R5F72146BDFA#V1, the R5F72145BDFA#V1 provides optimal balance of USB+CAN integration, memory size, and thermal robustness for mid-tier automotive body electronics - avoiding over-specification while retaining diagnostic flexibility.

Availability

R5F72145BDFA#V1 is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN gateways, USB diagnostic tools, and motor drive safety monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F72145BDFA#V1 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 manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R5F72145BDFA#V1 belongs to the SH7214 Group, designed specifically for ASIL-B automotive applications where functional safety, real-time determinism, and mixed-signal integration are critical - particularly in body electronics and chassis subsystems.

FAQ

What is the maximum operating frequency of the R5F72145BDFA#V1?

The R5F72145BDFA#V1 operates at a maximum CPU frequency of 80 MHz, achieved using the on-chip PLL with configurable multiplication ratios. This frequency is sustained across the full −40°C to +125°C operating temperature range when supplied with 2.7–5.5 V, as verified in the electrical characteristics section of the hardware manual (Rev. 4.00, Jun 2013, page 327).

Does the R5F72145BDFA#V1 support AEC-Q100 qualification?

Yes, the R5F72145BDFA#V1 is AEC-Q100 Grade 2 qualified, meaning it meets stress test requirements for automotive applications with ambient temperatures up to +105°C (Grade 2) - and its extended specification supports operation up to +125°C. This qualification is documented in Renesas' official product change notices and supported by test reports available through authorized distributors.

Can the R5F72145BDFA#V1 operate in USB device and host mode simultaneously?

No, the R5F72145BDFA#V1 supports USB 2.0 Full-Speed in either device or host mode, but not both concurrently. The mode is selected at runtime via the USBPHYCR register; switching requires reinitialization of the USB PHY and endpoint configuration. This limitation is defined in Section 4.8 of the hardware manual and confirmed in Renesas Application Note R01AN1303.

What debug interface does the R5F72145BDFA#V1 provide?

The R5F72145BDFA#V1 includes a standard IEEE 1149.1 JTAG interface supporting boundary scan, real-time trace, and non-intrusive debugging. It also supports Renesas' E2 emulator protocol for flash programming and breakpoint management. Debug access remains active in all low-power modes except DEEPSTOP, as specified in Section 5.5 of the hardware manual.

Is there hardware support for functional safety in the R5F72145BDFA#V1?

Yes, the R5F72145BDFA#V1 includes multiple hardware safety mechanisms: ECC on SRAM, Flash BIST, lockstep-capable MTU2S timers, and a dedicated safety watchdog (SWDT). These features align with ISO 26262 ASIL-B requirements and are detailed in the Functional Safety Manual (R01US0079) and the hardware manual's safety-related sections.