Renesas R5F72145BDFP#V1

Overview

R5F72145BDFP#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 SCI, I²C, CAN, and 12-bit ADC. It operates at up to 100 MHz and targets industrial motor control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the R5F72145BDFP#V1 datasheet, R5F72145BDFP#V1 pinout, R5F72145BDFP#V1 application, or R5F72145BDFP#V1 equivalent, key selection criteria include its SH-2A CPU architecture, CAN 2.0B compliance, 100 MHz max clock, 12-bit ADC with 16 channels, and LQFP-144 package with 118 user I/O pins - all critical for motion control and factory automation designs.

Technical Context

The R5F72145BDFP#V1 implements the SH-2A superscalar RISC core with dual-issue capability, supporting both integer and floating-point operations via integrated FPU. It integrates a programmable CPG with PLL, enabling flexible clock synthesis from 1–20 MHz crystal inputs to generate system clocks up to 100 MHz and dedicated 48 MHz USB clock.

Peripheral integration includes a 3-channel MTU2 timer unit with complementary PWM output, 2-channel CAN controllers compliant with ISO 11898-1:2003, and a 12-bit ADC with sample-and-hold and hardware-triggered conversion sequencing - all synchronized to the same internal bus matrix for low-latency sensor-to-actuator control loops.

Key Specifications

Pinout & Package

LQFP-144 (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment conforms to SH7214 Group pin compatibility; full pin function mapping is defined in Section 1.3 and Section 1.4 of the Hardware User's Manual (Rev. 4.00).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72144BDFP#V1 and R5F72146BDFP#V1, the R5F72145BDFP#V1 offers balanced memory (512 KB Flash/64 KB RAM) and full peripheral functionality without USB host overhead - making it the optimal fit for CAN-based industrial controllers where memory headroom and real-time determinism are prioritized over USB expansion.

Availability

R5F72145BDFP#V1 is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and building HVAC controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F72145BDFP#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 leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The SH7214 Group - including the R5F72145BDFP#V1 - was designed specifically for high-performance industrial automation, emphasizing real-time determinism, functional safety readiness, and integrated fieldbus connectivity (CAN, SCI, I²C).

FAQ

What is the maximum operating frequency of the R5F72145BDFP#V1?

The R5F72145BDFP#V1 operates at a maximum CPU frequency of 100 MHz, achieved via its integrated Clock Pulse Generator (CPG) with PLL. This frequency is sustained under full load at 3.3 V supply and ambient temperatures up to +85°C, as verified in the Electrical Characteristics section of the Hardware User's Manual (Rev. 4.00). The R5F72145BDFP#V1 maintains instruction throughput consistency across this range due to its SH-2A superscalar architecture.

Does the R5F72145BDFP#V1 support CAN FD?

No, the R5F72145BDFP#V1 supports only classical CAN 2.0B (ISO 11898-1:2003) with bit rates up to 1 Mbit/s. It does not implement CAN FD protocol features such as flexible data-rate or extended data length. Its two CAN controllers are fully compatible with existing CANopen and DeviceNet networks but require external gateway hardware for CAN FD migration. This limitation is explicitly documented in the Peripheral Functions chapter of the R5F72145BDFP#V1 Hardware User's Manual.

What debug interface does the R5F72145BDFP#V1 provide?

The R5F72145BDFP#V1 includes an on-chip E10A-USB debug interface compliant with IEEE 1149.1 (JTAG) and Renesas' proprietary FINE protocol. It supports full-speed real-time debugging, flash programming, and boundary-scan testing through a standard 14-pin JTAG connector. No external debug probe is required beyond Renesas' E10A-USB emulator, and the R5F72145BDFP#V1 retains debug access even when secured via flash protection bits - provided the correct unlock sequence is applied.

Is the R5F72145BDFP#V1 qualified for automotive applications?

The R5F72145BDFP#V1 is rated for industrial temperature range (−40°C to +85°C) and classified as "Standard" quality grade per Renesas' product grading system. It is not AEC-Q100 qualified and lacks automotive-specific features such as enhanced ESD immunity or extended temperature screening. While used in some non-safety-critical automotive aftermarket systems, Renesas explicitly restricts its use in transportation equipment without prior written consent - meaning the R5F72145BDFP#V1 is intended for industrial, not automotive OEM, applications.

How is flash memory protected against accidental overwrite on the R5F72145BDFP#V1?

Flash protection on the R5F72145BDFP#V1 is implemented via three mechanisms: (1) Block lock bits per 8 KB sector, (2) Write-protection register (FWEPROR) controlling erase/write access, and (3) Security fuse disabling debug interface and flash programming. These settings persist after reset and are enforced by on-chip logic - not software-only flags. Once locked, sectors cannot be modified without a full chip erase, and the R5F72145BDFP#V1 requires a specific unlock sequence via FWEPROR before any write/erase operation, preventing unintended corruption during field firmware updates.