AT49BV320ST 32Mbit,

Density 32M
Organization 2M x 16
Speed 70 ns
Vcc (V) 2.7V - 3.6V
Pb-Free
Packages
CBGA 64 (8x8)

32-Mbit (2M x 16), Secure 3-volt Only Memory, Top Boot Block.

The AT49BV320S(T) is a 2.7-volt 32-megabit Flash memory organized as 2,097,152 words of 16 bits each. The memory is divided into 71 sectors for erase operations. The device is offered in a 64-ball CBGA package. The device has CE and OE control signals to avoid any bus contention. This device can be read or reprogrammed using a single power supply, making it ideally suited for in-system programming. In some applications, in addition to the standard softlock sector protection mechanism, a requirement exists to allow for the permanent and irreversible locking of selected region in the memory. The AT49BV320S(T) allows the user to permanently lock eight regions, and once activated these secure regions cannot be altered or erased through Software or Hardware at any time. Once activated, no facility exists to over-ride the secure lock mechanism. The size of each secure region is 32K words, and the location of these regions is determined by the Top or Bottom Boot Block designation. The location of the secure regions is shown on pages 3 - 4. The secure regions can be locked in any sequence and at any time during normal device operation. If all eight regions are permanently locked, then program and erase operations in 1/8 of the memory will be disabled. Read operations can still be performed on any region that has the secure lock feature enabled. Full read and write operations, standard sector operations including standard Sector locking can be performed on all regions that are not secure locked.The AT49BV320S(T) device also contains a freeze feature that will freeze the lock status of the secure regions. The freeze feature prevents any further locking of the secure regions. If the user requires certain regions to be locked, then these regions must be programmed and locked prior to activation of the freeze command. It is important to note that enabling the freeze feature is irreversible.

AT49BV320ST 特性
AT49BV320ST 订购型号
Devices Package
AT49BV320S CBGA 64 (8x8)
AT49BV320ST
AT49BV320ST 应用技术支持与电子电路设计开发资源下载
  1. ATMEL 爱特梅尔Flash 存储器AT49BV320ST 数据手册DataSheet 下载. PDF(PDF 文件格式完整版)
  2. 并行Flash 产品选型指南Excel 文档格式选型 Excel 文档格式)
  3. ATMEL 爱特梅尔公司全线产品目录. pdf