收藏本站
AT45DB021B
3. Block Diagram
WP
PAGE (264 BYTES)
FLASH MEMORY ARRAY
SCK
CS
RESET
VCC
GND
BUFFER 1 (264 BYTES)
I/O INTERFACE
BUFFER 2 (264 BYTES)
RDY/BUSY
SI
SO
4. Memory Array
To provide optimal flexibility, the memory array of the AT45DB021B is divided into three levels of
granularity comprised of sectors, blocks and pages. The Memory Architecture Diagram illus-
trates the breakdown of each level and details the number of pages per sector and block. All
program operations to the DataFlash occur on a page-by-page basis; however, the optional
erase operations can be performed at the block or page level.
Figure 4-1.
Memory Architecture Diagram
SECTOR ARCHITECTURE
BLOCK ARCHITECTURE
PAGE ARCHITECTURE
SECTOR 0a = 8 Pages
SECTOR 0
BLOCK 0
BLOCK 1
8 Pages
PAGE 0
PAGE 1
2112 bytes (2K + 64)
SECTOR 0b = 248 Pages
BLOCK 2
PAGE 6
65,472 bytes (62K + 1984)
BLOCK 30
BLOCK 31
BLOCK 32
PAGE 7
PAGE 8
PAGE 9
BLOCK 33
SECTOR 0c = 256 Pages
67,584 bytes (64K + 2K)
PAGE 14
PAGE 15
BLOCK 62
BLOCK 63
BLOCK 64
PAGE 16
PAGE 17
PAGE 18
BLOCK 65
SECTOR 1 = 512 Pages
135,168 bytes (128K + 4K)
PAGE 1021
BLOCK 126
BLOCK 127
Block = 2112 bytes
(2K + 64)
PAGE 1022
PAGE 1023
Page = 264 bytes
(256 + 8)
3
1937J–DFLSH–9/05
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AT45DB041B-TI IC FLASH 4MBIT 20MHZ 28TSOP
AT45DB081B-TI IC FLASH 8MBIT 20MHZ 28TSOP
AT45DB161B-TI IC FLASH 16MBIT 20MHZ 28TSOP
AT45DB321-TC IC FLASH 32MBIT 13MHZ 32TSOP
AT45DB321B-TI IC FLASH 32MBIT 20MHZ 32TSOP
AT45DB321C-TC IC FLASH 32MBIT 40MHZ 28TSOP
AT45DB642-TC IC FLASH 64MBIT 20MHZ 40TSOP
AT88CK9000-8TH CRYPTO PROGRAMMER BOARD 8-TSSOP
相关代理商/技术参数
AT45DB021BTU 制造商:Atmel Corporation 功能描述:
AT45DB021B-TU 功能描述:闪存 DATAFLASH 2M SERIAL 2.7V IND TEMP GREEN RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel
AT45DB021D 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt DataFlash
AT45DB021D_07 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt DataFlash
AT45DB021D_08 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt Minimum DataFlash
AT45DB021D_09 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt Minimum DataFlash
AT45DB021D-MH-SL954 制造商:Adesto Technologies Corporation 功能描述:8-UDFN (5X6), IND TEMP, 2.7V, TRAY, 256 BYTE PAGE - Trays
AT45DB021D-MH-SL955 制造商:Adesto Technologies Corporation 功能描述:8-UDFN (5X6), IND TEMP, 2.7V, T&R, 256 BYTE PAGE - Tape and Reel