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AT45DB041B
take place in a maximum time of t EP . During this time, the status register will indicate that the
part is busy.
If a sector is programmed or reprogrammed sequentially page-by-page, then the programming
algorithm shown in Figure 17-1 on page 27 is recommended. Otherwise, if multiple bytes in a
page or several pages are programmed randomly in a sector, then the programming algorithm
shown in Figure 17-2 on page 28 is recommended. Each page within a sector must be
updated/rewritten at least once within every 10,000 cumulative page erase/program operations
in that sector.
5.4
Operation Mode Summary
The modes described can be separated into two groups – modes which make use of the Flash
memory array (Group A) and modes which do not make use of the Flash memory array (Group
B).
Group A modes consist of:
1. Main Memory Page Read
2. Main Memory Page to Buffer 1 (or 2) Transfer
3. Main Memory Page to Buffer 1 (or 2) Compare
4. Buffer 1 (or 2) to Main Memory Page Program with Built-in Erase
5. Buffer 1 (or 2) to Main Memory Page Program without Built-in Erase
6. Page Erase
7. Block Erase
8. Main Memory Page Program through Buffer
9. Auto Page Rewrite
Group B modes consist of:
1. Buffer 1 (or 2) Read
2. Buffer 1 (or 2) Write
3. Status Register Read
If a Group A mode is in progress (not fully completed) then another mode in Group A should not
be started. However, during this time in which a Group A mode is in progress, modes in Group B
can be started.
This gives the Serial DataFlash the ability to virtually accommodate a continuous data stream.
While data is being programmed into main memory from buffer 1, data can be loaded into buffer
2 (or vice versa). See application note AN-4 (“Using Atmel’s Serial DataFlash”) for more details.
9
3443D–DFLSH–2/08
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AT45DB041B-TI-2.5 功能描述:IC FLASH 4MBIT 20MHZ 28TSOP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:378 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-CBGA 供应商设备封装:48-CBGA（7x7） 包装:托盘
AT45DB041B-TU 功能描述:IC FLASH 4MBIT 20MHZ 28TSOP RoHS:是 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:1 系列:- 格式 - 存储器:RAM 存储器类型:SDRAM 存储容量:256M（8Mx32） 速度:143MHz 接口:并联 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:90-VFBGA 供应商设备封装:90-VFBGA（8x13） 包装:托盘 其它名称:Q2841869
AT45DB041-CC 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 2.7-volt Only Serial DataFlash
AT45DB041-CI 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 2.7-volt Only Serial DataFlash
AT45DB041D 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 2.5-volt or 2.7-volt DataFlash
AT45DB041D_07 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 2.5-volt or 2.7-volt DataFlash
AT45DB041D_08 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 2.5-volt or 2.7-volt DataFlash
AT45DB041D-DWF 制造商:Adesto Technologies Corporation 功能描述:WHOLE WAFER, NO BACKGRIND - Gel-pak, waffle pack, wafer, diced wafer on film