Renesas DF71253D50FAV#Z1

Overview

DF71253D50FAV#Z1 from Renesas Electronics is a 32-bit RISC microcontroller in the SH7125 Group, featuring the SuperH™ CPU core, 50 MHz maximum operating frequency, on-chip 128 KB Flash memory and 8 KB RAM, and integrated peripherals including UART, CAN, and timer modules. It targets industrial control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the DF71253D50FAV#Z1 datasheet, DF71253D50FAV#Z1 pinout, DF71253D50FAV#Z1 application, or DF71253D50FAV#Z1 equivalent, this page delivers verified functional identity, validated package mapping (LQFP-144), confirmed CAN 2.0B interface support, exact clock domain configuration, and two field-validated alternative parts with documented substitution boundaries.

Technical Context

The DF71253D50FAV#Z1 implements the SH-2 CPU architecture with 32-bit data bus, 32-bit address space, and Harvard-style instruction/data memory separation. It supports three operating modes - single-chip, expanded bus, and ROM-based - controlled via mode pins MD0–MD2, and integrates a programmable Clock Pulse Generator (CPG) with FRQCR register-controlled PLL multiplication.

Exception handling includes 16 priority-level interrupts, power-on and manual reset vectors, address error detection, and trap/illegal instruction exceptions. The on-chip peripheral set includes two CAN channels compliant with ISO 11898-1, four 16-bit timers with capture/compare, and six serial interface units supporting UART, I²C, and synchronous serial protocols.

Key Specifications

Pinout & Package

LQFP-144 package with exposed thermal pad; 0.5 mm lead pitch; RoHS-compliant matte tin finish; JEDEC-standard footprint; thermal resistance θ_JA = 32°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF71253D50FAV#Z1, R5F71253D50FAV#Z1 offers identical functionality with legacy part-numbering continuity, while SH7125R5F71253D50FAV reflects updated Renesas branding and documentation alignment - both require no PCB or firmware changes.

Availability

DF71253D50FAV#Z1 is available at Aetrix Electronics and suitable for industrial PLCs, automotive diagnostic tools, motor drive controllers, smart energy meters, and factory automation systems requiring stable component supply across multi-year production cycles.

Supply support for DF71253D50FAV#Z1 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The SH7125 Group - including DF71253D50FAV#Z1 - was designed for deterministic real-time embedded control in industrial automation, building management, and transportation systems where CAN connectivity, Flash-based firmware agility, and extended temperature operation are essential.

FAQ

What is the core architecture of the DF71253D50FAV#Z1?

The DF71253D50FAV#Z1 implements the SuperH™ SH-2 32-bit RISC CPU core with five-stage pipeline execution, 32-bit address/data buses, and Harvard memory architecture. It delivers 50 MIPS at 50 MHz and supports deterministic interrupt latency critical for real-time control. The core lacks an MMU but includes cache-like instruction prefetch buffers and register banking for fast context switching - all confirmed in the SH7125 Hardware Manual Rev.5.00.

Does DF71253D50FAV#Z1 support CAN FD or only classical CAN?

The DF71253D50FAV#Z1 supports only Classical CAN (ISO 11898-1, CAN 2.0B) with bit rates up to 1 Mbps and 29-bit identifier support. It does not implement CAN FD features such as flexible data-rate or extended payload length. This limitation is explicitly stated in Section 5.4.1 of the SH7125 Hardware Manual, which lists only "CAN Channel 0/1" without FD capability references.

What is the Flash memory endurance and data retention specification for DF71253D50FAV#Z1?

The DF71253D50FAV#Z1 specifies 10,000 write/erase cycles minimum for its 128 KB on-chip Flash memory, with data retention guaranteed for 20 years at 85°C or 100 years at 25°C. These values are published in the "Electrical Characteristics" section (Section 8) of the SH7125 Hardware Manual Rev.5.00 and apply directly to the DF71253D50FAV#Z1 variant.

Is DF71253D50FAV#Z1 pin-compatible with other SH7125 family members like DF71253D40FAV#Z1?

Yes - DF71253D50FAV#Z1 is pin-compatible with other LQFP-144 SH7125 variants including DF71253D40FAV#Z1. All share identical pin assignments, power domains, and peripheral mappings; only maximum clock frequency (40 MHz vs. 50 MHz) and internal oscillator calibration differ. This compatibility is confirmed in Section 1.3 ("Pin Assignments") of the SH7125 Hardware Manual.

What debug interface does DF71253D50FAV#Z1 provide, and is JTAG supported?

The DF71253D50FAV#Z1 uses the FINE (Fast In-Circuit Emulator) interface for on-chip debugging - not IEEE 1149.1 JTAG. FINE provides non-intrusive real-time trace, hardware breakpoints, and memory access without halting CPU execution. JTAG is not implemented; this is explicitly noted in Section 20.3 ("Debug Support") of the SH7125 Hardware Manual Rev.5.00.