Renesas R5F72145ADFA#V1

Overview

R5F72145ADFA#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 real-time industrial control applications requiring deterministic timing and robust peripheral integration.

For engineers reviewing the R5F72145ADFA#V1 datasheet, R5F72145ADFA#V1 pinout, R5F72145ADFA#V1 application, or R5F72145ADFA#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 support for single-chip mode with external bus interface capability.

Technical Context

The R5F72145ADFA#V1 implements the SH-2A CPU core with FPU support, enabling high-precision floating-point computation in embedded control loops. Its CPG supports multiple clock sources - crystal resonator (1–20 MHz), external clock input, and internal oscillator - with programmable PLL multiplication (×1 to ×8) and dynamic frequency switching via FRQCR register.

Peripheral integration includes a 3-channel CAN controller compliant with ISO 11898-1:2003, a 16-channel 12-bit successive-approximation ADC with sample-and-hold, and dual SCI interfaces supporting asynchronous, clock-synchronous, and smart card modes. Memory protection is enforced via MPU with region-based access control and privilege levels.

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 R5F72145ADFA#V1, the R5F72144ADFA#V1 trades CAN capability for reduced cost and Flash size, while the R5F72146ADFA#V1 provides headroom for complex firmware growth without changing hardware design or layout.

Availability

R5F72145ADFA#V1 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and programmable logic controller applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F72145ADFA#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 industrial, automotive, and infrastructure markets.

The SH7214 Group, including R5F72145ADFA#V1, was designed for high-performance real-time control in harsh industrial environments, emphasizing deterministic timing, functional safety readiness, and integrated communication interfaces.

FAQ

What is the maximum operating frequency of the R5F72145ADFA#V1?

The R5F72145ADFA#V1 operates at a maximum frequency of 100 MHz using its on-chip PLL with external crystal input (1–20 MHz). This frequency is achievable under specified voltage (3.0–3.6 V) and temperature (−40°C to +85°C) conditions, delivering 165.5 DMIPS performance. The CPG module allows dynamic clock scaling via the FRQCR register for power optimization without compromising real-time responsiveness in the R5F72145ADFA#V1.

Does the R5F72145ADFA#V1 support CAN FD or only classical CAN?

The R5F72145ADFA#V1 supports only Classical CAN (CAN 2.0B), compliant with ISO 11898-1:2003, with bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate, extended data length, or CRC enhancements. Its three independent CAN controllers provide message object buffers and FIFO modes, making it suitable for legacy industrial fieldbus and automotive body networks where CAN FD is not required. This limitation applies specifically to the R5F72145ADFA#V1 and is documented in the SH7214 Group Hardware User's Manual.

What type of ADC is integrated into the R5F72145ADFA#V1?

The R5F72145ADFA#V1 integrates a 12-bit successive-approximation register (SAR) ADC with 16 input channels, sample-and-hold circuitry, and hardware-triggered conversion. It supports programmable resolution (8/10/12-bit), selectable reference voltages (AVREFH/AVREFL), and automatic channel scanning. Conversion time is 1.2 µs at 12-bit resolution, enabling high-fidelity analog monitoring in motor control and sensor interface applications. This ADC architecture is confirmed in the R5F72145ADFA#V1's peripheral specification section of the SH7214 Group User's Manual.

Is the R5F72145ADFA#V1 pin-compatible with other SH7214 Group devices?

Yes, the R5F72145ADFA#V1 is pin-compatible with other 144-pin LQFP variants in the SH7214 Group, including R5F72144ADFA#V1 and R5F72146ADFA#V1. All share identical pin assignments, electrical characteristics, and package dimensions (20 mm × 20 mm, 0.5 mm pitch), allowing direct substitution in the same PCB layout. Differences are limited to on-chip Flash size and peripheral enablement - e.g., R5F72144ADFA#V1 omits CAN - but do not affect pin functionality or routing. This compatibility is explicitly defined in Section 1.3 (Pin Assignment) of the SH7214 Group Hardware User's Manual.

Does the R5F72145ADFA#V1 include hardware encryption or security features?

The R5F72145ADFA#V1 does not include dedicated hardware encryption accelerators (e.g., AES, SHA, TRNG) or secure boot ROM. Its security features are limited to memory protection via the MPU, watchdog timer with window function, and flash lock-bit protection against unauthorized read/write. It lacks tamper detection, secure key storage, or cryptographic co-processors. For applications requiring certified security (e.g., IEC 62443, ISO/SAE 21434), external secure elements or higher-tier Renesas devices (e.g., RA6 series) must be used. This absence is consistent across the SH7214 Group, as confirmed in the R5F72145ADFA#V1's feature summary and peripheral overview sections.