Renesas R5F72145BDFA#H1

Overview

R5F72145BDFA#H1 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 automotive body control modules requiring real-time deterministic response.

For engineers reviewing the R5F72145BDFA#H1 datasheet, R5F72145BDFA#H1 pinout, R5F72145BDFA#H1 application, or R5F72145BDFA#H1 equivalent, key selection criteria include CAN 2.0B compliance, -40°C to +125°C operating temperature, 5V-tolerant I/O, and AEC-Q100 Grade 2 qualification for automotive use.

Technical Context

The R5F72145BDFA#H1 implements the SH-2A CPU core with FPU support, executing instructions in a five-stage pipeline with branch prediction. It integrates a Clock Pulse Generator (CPG) supporting PLL-based clock synthesis, USB 2.0 FS PHY (48 MHz), and dual CAN controllers compliant with ISO 11898-1.

Memory subsystem includes 512 KB Flash with ECC protection, 64 KB SRAM with parity, and flexible boot options via ROM/Flash selection. Peripheral interconnect uses a multi-layer bus architecture enabling concurrent DMA transfers across DTC, MTU2S, and ADC units without CPU intervention.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72144BDFA#H1 and R5F72146BDFA#H1, the R5F72145BDFA#H1 offers balanced memory resources ideal for mid-tier automotive ECUs where full 768 KB is unnecessary but 384 KB is insufficient for feature-rich implementations.

Availability

R5F72145BDFA#H1 is available at Aetrix Electronics and suitable for automotive body electronics, door control systems, and roof module designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant performance.

Supply support for R5F72145BDFA#H1 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 R5F72145BDFA#H1, was designed specifically for automotive body electronics applications requiring high integration, functional safety readiness, and extended temperature operation.

FAQ

What is the maximum operating frequency of the R5F72145BDFA#H1?

The R5F72145BDFA#H1 operates at a maximum CPU frequency of 100 MHz, achieved using its integrated Clock Pulse Generator (CPG) with PLL multiplier. This frequency is sustained across the full -40°C to +125°C temperature range when supplied with stable 3.3 V core voltage and appropriate decoupling. The R5F72145BDFA#H1's timing specifications guarantee instruction throughput and peripheral latency at this speed under worst-case conditions.

Does the R5F72145BDFA#H1 support CAN FD?

No, the R5F72145BDFA#H1 supports only Classical CAN (ISO 11898-1, CAN 2.0B) at up to 1 Mbps. It does not implement CAN FD physical layer or protocol enhancements such as flexible data-rate or extended data length. For CAN FD requirements, designers should consider Renesas' RA6T2 or RH850/F1K series. The R5F72145BDFA#H1's dual CAN controllers remain fully compatible with existing automotive body network architectures built on Classical CAN.

Is the R5F72145BDFA#H1 qualified for automotive use?

Yes, the R5F72145BDFA#H1 is AEC-Q100 Grade 2 qualified, meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and ESD per automotive standards. Its -40°C to +125°C operating range, 5V-tolerant I/O, and built-in memory ECC/parity align with functional safety requirements for non-safety-critical automotive ECUs. The R5F72145BDFA#H1 is widely deployed in production body control modules and meets OEM component approval processes.

What debug interface does the R5F72145BDFA#H1 provide?

The R5F72145BDFA#H1 features an E10A-USB on-chip debug interface compliant with Renesas' standard toolchain. It supports real-time trace, hardware breakpoints, watchpoints, and memory inspection via a single SWD-compatible 5-pin connector. No external JTAG emulator is required - development tools like e2 studio and CS+ integrate directly with the R5F72145BDFA#H1's debug port for full visibility into CPU state and peripheral registers during bring-up and validation.

How much user-accessible Flash memory does the R5F72145BDFA#H1 have?

Of the total 512 KB on-chip Flash memory, 504 KB is user-programmable for application code and data storage. The remaining 8 KB is reserved for bootloader, security keys, and factory calibration data. Flash sectors support erase granularity down to 1 KB, enabling robust firmware update schemes with rollback capability. The R5F72145BDFA#H1's Flash controller includes ECC generation on write and correction on read, ensuring data integrity over 100,000 erase/write cycles.