参数资料
型号: AT45DB021B-TI
厂商: ATMEL CORP
元件分类: DRAM
英文描述: 2-megabit 2.7-volt Only DataFlash??
中文描述: 2M X 1 FLASH 2.7V PROM, PDSO28
封装: 18 X 13.40 MM, PLASTIC, MO-183, TSOP1-28
文件页数: 17/33页
文件大小: 261K
代理商: AT45DB021B-TI
17
AT45DB021B
1937F
DFLSH
10/02
Read Operations
The following block diagram and waveforms illustrate the various read sequences
available.
Main Memory Page Read
Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)
Buffer Read
FLASH MEMORY ARRAY
PAGE (264 BYTES)
BUFFER 2 (264 BYTES)
BUFFER 1 (264 BYTES)
I/O INTERFACE
MAIN MEMORY
PAGE TO
BUFFER 1
MAIN MEMORY
PAGE TO
BUFFER 2
MAIN MEMORY
PAGE READ
BUFFER 1
READ
BUFFER 2
READ
SO
SI
CMD
r r r r r, PA9-7
PA6-0, BA8
BA7-0
X
X
X
X
CS
n
n+1
SO
SI
CMD
rrrr r, PA9-7
PA6-0, X
X
Starts reading page data into buffer
CS
SO
SI
CMD
X
X
···
X, BFA8
BFA7-0
CS
n
n+1
SO
X
Each transition represents
8 bits and 8 clock cycles
n = 1st byte read
n+1 = 2nd byte read
相关PDF资料
PDF描述
AT45DB021B 2-megabit 2.7-volt Only DataFlash??
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AT45DB021D-MU 2-megabit 2.7-volt DataFlash
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相关代理商/技术参数
参数描述
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