参数资料
型号: AT45DB021-RI
厂商: ATMEL CORP
元件分类: DRAM
英文描述: 2-Megabit 2.7-volt Only Serial DataFlash
中文描述: 264K X 8 FLASH 2.7V PROM, PDSO28
封装: 0.330 INCH, PLASTIC, SOIC-28
文件页数: 10/18页
文件大小: 201K
代理商: AT45DB021-RI
AT45DB021
10
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
PA6-0, BA8
BA7-0
X
X
X
X
CS
n
n+1
SO
r r r, PA11-7
SI
CMD
PA6-0, X
X
Starts reading page data into buffer
CS
SO
r r r, PA11-7
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
AT45DB021-TC 2-Megabit 2.7-volt Only Serial DataFlash
AT45DB021-TI 2-Megabit 2.7-volt Only Serial DataFlash
AT45DB041B-CNC 4-megabit 2.5-volt or 2.7-volt DataFlash
AT45DB041B-CNC-2.5 4-megabit 2.5-volt or 2.7-volt DataFlash
AT45DB041B-CNI 4-megabit 2.5-volt or 2.7-volt DataFlash
相关代理商/技术参数
参数描述
AT45DB021-TC 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-Megabit 2.7-volt Only Serial DataFlash
AT45DB021-TI 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-Megabit 2.7-volt Only Serial DataFlash
AT45DB041 制造商:Adesto Technologies Corporation 功能描述:ROOT PART: DATAFLASH - Bulk
AT45DB041A 制造商:未知厂家 制造商全称:未知厂家 功能描述:4M bit. 2.7-Volt Only Serial-Interface Flash with Two 264-Byte SRAM Buffers. For new designs please use AT45DB041B.
AT45DB041A_01 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 2.5-volt Only Serial DataFlasH