AT49BV320DT-70CU

Memory IC Overview

The AT49BV320DT-70CU is a 32-megabit NOR Flash memory organized as 2M x 16 words. It operates on a single voltage supply ranging from 2.65V to 3.6V with an access time of 70 ns. The device features a sector erase architecture comprising sixty-three 32K-word sectors and eight 4K-word sectors, each with individual write lockout capabilities. It supports fast word programming in 10 µs and sector erasure in 100 ms. The component includes suspend/resume functionality for both erase and program operations, allowing read or program access to other sectors during suspended activities. It offers flexible sector protection via softlock and hardlock modes, a 128-bit protection register, and Common Flash Interface (CFI) support.

Memory IC Feature Summary

• Sector Erase Architecture with Individual Write Lockout
• Erase and Program Suspend/Resume Capability
• Flexible Sector Protection Modes
• Common Flash Interface (CFI) Support

Memory IC Applications

• In-system programming applications
• Code storage requiring sector-level protection
• Embedded systems needing suspend/resume flexibility

Memory IC Procurement Notes

Verify the specific package type required, as the datasheet indicates TSOP and CBGA options. Confirm the manufacturer status, as Atmel was acquired by Microchip Technology. Ensure the design accounts for the VPP pin requirements for write protection and accelerated programming. Check for any end-of-life notices or alternative part recommendations from the supplier.

Memory IC Selection Notes

Select this component when a 32Mbit parallel NOR Flash with 70 ns access is needed. Consider the 2.65V to 3.6V operating range for power compatibility. Evaluate the sector protection needs against the available softlock and hardlock features. Verify that the 48-lead TSOP or 47-ball CBGA package fits the board layout constraints.

Memory IC Part Context

This device belongs to the AT49BV series of 3-volt-only Flash memories manufactured by Microchip Technology (formerly Atmel). It is designed for high-reliability applications requiring non-volatile storage with flexible protection mechanisms. The series supports standard microprocessor interfaces and is suitable for code execution directly from the flash memory.

Memory IC Replacement Considerations

Check for AT49BV320D variants with different suffixes for package or temperature differences. Consult Microchip documentation for officially confirmed substitutes if this specific part number is unavailable.