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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 |
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