Renesas DF71476AK64FPV

Overview

DF71476AK64FPV from Renesas Electronics is a 32-bit RISC microcontroller in the SH7147 Group, featuring the SuperH™ CPU core, 512 KB on-chip Flash memory, 32 KB RAM, and integrated peripherals including CPG, interrupt controller, and multiple serial interfaces. It operates at up to 40 MHz and targets industrial control and embedded instrumentation applications requiring deterministic real-time response.

For engineers reviewing the DF71476AK64FPV datasheet, DF71476AK64FPV pinout, DF71476AK64FPV application, or DF71476AK64FPV equivalent, key selection criteria include its 64-pin LQFP package, 3.3 V single-supply operation, Flash memory endurance (10,000 write/erase cycles), and support for single-chip mode with external bus interface disabled.

Technical Context

The DF71476AK64FPV implements the SH-2 CPU architecture with 16 general-purpose 32-bit registers, a 32-bit ALU, and 16-bit instruction word length. Its Clock Pulse Generator supports crystal/resonator input (1–20 MHz) and internal frequency division to generate system clocks up to 40 MHz with programmable PLL settings via FRQCR register.

Exception handling includes 128-vector interrupt table, priority-based nested interrupts, and dedicated reset sources (power-on, manual, oscillation stop detection). The device uses a unified memory map with configurable wait-state control for external bus access and supports both big-endian and little-endian data ordering via software configuration.

Key Specifications

Pinout & Package

DF71476AK64FPV is housed in a 64-pin LQFP package with exposed thermal pad (EP), compliant with JEDEC MS-026. Pin layout follows SH7147 Group standard assignment: power (VCC, VSS), clock (EXTAL, XTAL), reset (/RES), and multiplexed I/O grouped by function (e.g., P0–P15 ports, serial interface pins).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F71476AK64FPV and SH7147R5F7147, DF71476AK64FPV delivers identical core performance, memory, and peripheral functionality - differences are purely nomenclature and packaging labeling reflecting Renesas' 2010 corporate merger; all three share the same hardware revision and qualification data.

Availability

DF71476AK64FPV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, factory automation controllers, and test & measurement front-ends requiring stable component supply across multi-year production cycles.

Supply support for DF71476AK64FPV 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 infrastructure markets.

The SH7147 Group was designed for cost-sensitive, high-reliability embedded control applications demanding real-time responsiveness, integrated Flash, and robust clock supervision - targeting industrial automation and instrumentation.

FAQ

What is the maximum system clock frequency supported by DF71476AK64FPV?

The DF71476AK64FPV supports a maximum system clock frequency of 40 MHz, achieved via its on-chip Clock Pulse Generator with programmable PLL and frequency dividers. This timing specification is validated across the full operating temperature range (−20 °C to +75 °C) and 3.3 V supply, enabling deterministic instruction execution for real-time control tasks. DF71476AK64FPV's CPG allows flexible clock source selection including crystal resonator (1–20 MHz) or external clock input.

Does DF71476AK64FPV include on-chip Flash memory, and what is its endurance rating?

Yes, DF71476AK64FPV integrates 512 KB of on-chip Flash memory rated for 10,000 write/erase cycles and data retention of 20 years at 85 °C. This Flash supports in-application programming (IAP), allowing firmware updates without removing the device from the system. DF71476AK64FPV's Flash architecture includes block protection and secure boot features to prevent unauthorized modification during field deployment.

What package type and pin count does DF71476AK64FPV use?

DF71476AK64FPV is packaged in a 64-pin LQFP (Low-Profile Quad Flat Package) measuring 10 mm × 10 mm with 0.5 mm lead pitch and an exposed thermal pad. This RoHS-compliant package supports standard surface-mount assembly processes and provides adequate thermal dissipation for continuous operation at 40 MHz. DF71476AK64FPV's pinout aligns with the SH7147 Group standard, ensuring compatibility with existing layout footprints and debug adapters.

How does DF71476AK64FPV handle clock failure detection?

DF71476AK64FPV implements hardware-based oscillation stop detection that monitors the EXTAL/XTAL circuit and triggers a dedicated reset if crystal oscillation ceases for more than 128 main clock cycles. This feature is enabled via the OSCCR register and operates independently of software execution, ensuring fail-safe recovery in mission-critical industrial systems. DF71476AK64FPV's design prevents silent hangs by forcing a controlled restart before corrupted state propagates.

Is DF71476AK64FPV suitable for automotive applications?

No, DF71476AK64FPV is classified as a Renesas "Standard" quality grade product intended for computers, office equipment, industrial robots, and test equipment - not for automotive, aerospace, medical life-support, or other safety-critical domains. DF71476AK64FPV lacks AEC-Q100 qualification, extended temperature range (−40 °C to +125 °C), and automotive-specific fault coverage features. For automotive use, Renesas offers separate RH850 or RL78-Automotive series devices.