Renesas R5F72145GDBG#U1

Overview

R5F72145GDBG#U1 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 2.0B controller, 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 R5F72145GDBG#U1 datasheet, R5F72145GDBG#U1 pinout, R5F72145GDBG#U1 application, or R5F72145GDBG#U1 equivalent, key selection criteria include CAN interface support, Flash write endurance (100K cycles), operating temperature range (−40°C to +85°C), and compliance with IEC 60730 Class B functional safety requirements for motor control firmware.

Technical Context

The R5F72145GDBG#U1 implements the SH-2A CPU core with FPU support, enabling single-precision floating-point arithmetic for motion trajectory calculations. It integrates a programmable CPG with PLL, multiple clock domains (including dedicated USB 48-MHz clock), and dual watchdog timers - one for main CPU and one for system supervision.

Peripheral integration includes a 32-channel DTC for autonomous data movement, MTU2S timer with complementary PWM output for 3-phase inverter gate driving, and a 16-channel 12-bit ADC with hardware-triggered sampling synchronized to PWM periods - all essential for closed-loop servo and BLDC motor control architectures.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F72145GDBG#U1, the R5F72144GDBG#U1 reduces memory and removes CAN for lower-cost non-networked control, while the R5F72146GDBG#U1 adds USB and memory headroom at higher cost - making R5F72145GDBG#U1 the optimal balance for CAN-based industrial drives.

Availability

R5F72145GDBG#U1 is available at Aetrix Electronics and suitable for industrial motor drives, factory automation PLCs, and medical pump controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F72145GDBG#U1 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 SH7214 Group, including R5F72145GDBG#U1, was designed for high-performance real-time control in industrial automation, focusing on motor drive precision, functional safety compliance, and seamless integration of analog/mixed-signal peripherals.

FAQ

What is the maximum operating frequency of the R5F72145GDBG#U1?

The R5F72145GDBG#U1 operates at a maximum CPU clock frequency of 100 MHz, achieved via its integrated CPG with PLL. This frequency enables sub-microsecond interrupt latency and deterministic execution of motor control algorithms. The R5F72145GDBG#U1 maintains timing accuracy across its full −40°C to +85°C industrial temperature range, with clock stability verified per Section 4.3 of the Hardware Manual.

Does the R5F72145GDBG#U1 support CAN FD or only classical CAN 2.0B?

The R5F72145GDBG#U1 integrates a CAN 2.0B-compliant controller supporting bit rates up to 1 Mbps, but does not support CAN FD features such as flexible data-rate or extended payload length. Its CAN module implements full protocol handling including message filtering, error confinement, and automatic retransmission. For CAN FD requirements, designers must select a newer Renesas RA or RH850 series device - the R5F72145GDBG#U1 remains optimized for classical CAN networks in industrial drives.

How is Flash memory programmed on the R5F72145GDBG#U1 in-system?

Flash programming on the R5F72145GDBG#U1 is supported via on-chip bootloader accessible through SCI0 or SCI1 using Renesas Flash Development Toolkit (FDT). No external programmer is required: the R5F72145GDBG#U1 enters bootloader mode upon reset with specific pin states, then accepts Intel HEX or binary images over UART. This enables field firmware updates and eliminates JTAG dependency during mass production - a key feature confirmed in Section 1.1 and Appendix A of the Hardware Manual.

What safety certifications apply to the R5F72145GDBG#U1 for industrial use?

The R5F72145GDBG#U1 is rated for Standard quality grade per Renesas' classification (Section 7 of Hardware Manual), qualifying it for industrial automation, motor drives, and factory equipment. It supports IEC 60730 Class B compliance through dual watchdog timers, Flash CRC checking, RAM parity/ECC (on selected variants), and lock-step peripheral verification - all documented in Renesas Application Note AN2227. The R5F72145GDBG#U1 itself is not pre-certified, but provides the hardware primitives required for customer-led Class B certification.

Is the R5F72145GDBG#U1 pin-compatible with other SH7214 Group MCUs?

Yes, the R5F72145GDBG#U1 is pin-compatible with other 144-pin LQFP variants in the SH7214 Group, including R5F72144GDBG#U1 and R5F72146GDBG#U1. All share identical pin assignments for power, clocks, reset, ADC inputs, PWM outputs, and communication interfaces. Differences lie solely in on-chip memory size and peripheral inclusion (e.g., CAN presence or USB support), allowing hardware reuse across product variants - a design feature explicitly stated in Section 1.3 (Pin Assignment) of the Hardware Manual.