AT45DB321D-SU – 32Mbit SPI Serial Flash Memory – Renesas Electronics

This Renesas Electronics AT45DB321D-SU SPI serial flash memory IC delivers reliable non-volatile storage for embedded systems requiring efficient data retention. Offering high-speed serial interface performance and industrial temperature resilience, it’s ideal for applications demanding dependable memory solutions. PCX ensures genuine components with rapid shipping and technical support.

Key Features

• 32Mbit memory capacity organized as 528 bytes x 8192 pages
• SPI interface with 66 MHz clock frequency for rapid data transfer
• 2.7V–3.6V operating voltage for low-power designs
• Industrial temperature range: -40°C to +85°C (TC)
• 6ms page write time for efficient programming
• Surface-mount 8-SOIC package (5.30mm width)

Technical Specifications

This non-volatile flash memory utilizes SPI protocol for simplified system integration. Organized into 8,192 programmable pages (each 528 bytes), it supports flexible read/write operations. The 66 MHz clock frequency enables high-throughput data access, while wide voltage compatibility ensures stability across power environments. Industrial-grade temperature tolerance guarantees performance in harsh conditions.

Typical Applications

• Embedded systems firmware storage
• Industrial automation control modules
• Medical device data logging
• IoT sensor configuration storage
• Automotive telematics systems

About Renesas Electronics

Renesas Electronics Corporation is a global leader in advanced semiconductor solutions, renowned for innovation in microcontrollers, analog ICs, and power devices. With decades of industry expertise, Renesas consistently delivers high-reliability components meeting rigorous automotive, industrial, and consumer standards.

The company’s commitment to quality management and technological advancement has established it as a trusted partner for mission-critical applications worldwide. Renesas maintains stringent production controls and comprehensive testing protocols, ensuring components perform reliably throughout their operational lifecycle.

About Serial Flash Memory

Serial flash memory provides non-volatile data storage using SPI or I²C interfaces, offering significant advantages over parallel alternatives. Its simplified pin count reduces board complexity and cost while maintaining robust data retention capabilities. These devices retain information without power, making them essential for firmware storage and configuration settings.

Modern serial flash ICs deliver increasingly higher speeds and densities with minimal power consumption. Their compact footprints enable integration in space-constrained designs across consumer electronics, automotive systems, and industrial equipment. SPI variants like this Renesas device offer particularly fast read/write performance for demanding applications.

Packaging Options

Available in protective Tube packaging for secure handling and automated assembly processes.

FAQs

Q: Is this SPI flash memory suitable for industrial environments?
A: Yes, its -40°C to +85°C operating range qualifies it for industrial applications.

Q: What voltage does this IC require?
A: It operates at 2.7V–3.6V, compatible with common 3.3V systems.

Q: Can I reprogram this flash memory?
A: Yes, it supports full read/write/erase cycles via standard SPI commands.

Q: How fast is data programming?
A: Page programming completes in 6ms typical, with 66 MHz clocking for rapid transfers.

Q: Why choose serial flash over parallel?
A: SPI flash reduces pin count and board complexity while maintaining performance for many applications.

Q: Is the datasheet available?
A: Yes, download the full AT45DB321D-SU datasheet for detailed specifications.

⚠️ Note: Product images are representational. Verify specifications in datasheet before integration.

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