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參數(shù)資料
| 型號(hào)： | AT45D021 |
| 廠商： | Atmel Corp. |
| 英文描述： | 2-Megabit 5-volt Only Serial DataFlash |
| 中文描述： | 2兆位5伏只有串行的DataFlash |
| 文件頁數(shù)： | 10/18頁 |
| 文件大小： | 200K |
| 代理商： | AT45D021 |
AT45D021
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
r r r r r, PA9-7
PA6-0, BA8
BA7-0
X
X
X
X
CS
n
n+1
SO
SI
CMD
r r r r 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 written
n+1 = 2nd byte written
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT45D021-JC | 2-Megabit 5-volt Only Serial DataFlash |
| AT45D021-JI | 2-Megabit 5-volt Only Serial DataFlash |
| AT45D021-RC | 2-Megabit 5-volt Only Serial DataFlash |
| AT45D021-RI | 2-Megabit 5-volt Only Serial DataFlash |
| AT45D021-TC | 2-Megabit 5-volt Only Serial DataFlash |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT45D021A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2-megabit 5-volt Only Serial DataFlash |
| AT45D021A-JC | 功能描述:閃存 2M bit RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT45D021A-JI | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2-megabit 5-volt Only Serial DataFlash |
| AT45D021A-RC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SPI Serial EEPROM |
| AT45D021A-RI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SPI Serial EEPROM |
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