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参数资料
| 型号： | AT45D021-RI |
| 厂商： | ATMEL CORP |
| 元件分类： | DRAM |
| 英文描述： | 2-Megabit 5-volt Only Serial DataFlash |
| 中文描述： | 2M X 1 FLASH 5V PROM, PDSO28 |
| 封装： | 0.330 INCH, PLASTIC, SOIC-28 |
| 文件页数： | 9/18页 |
| 文件大小： | 200K |
| 代理商： | AT45D021-RI |
AT45D021
9
Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
Main Memory Page Program through Buffers
Buffer Write
Buffer to Main Memory Page Program
(Data from Buffer Programmed into Flash Page)
FLASH MEMORY ARRAY
PAGE (264 BYTES)
BUFFER 2 (264 BYTES)
BUFFER 1 (264 BYTES)
I/O INTERFACE
SI
BUFFER 1 TO
MAIN MEMORY
PAGE PROGRAM
MAIN MEMORY
PAGE PROGRAM
THROUGH BUFFER 2
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
MAIN MEMORY PAGE
PROGRAM THROUGH
BUFFER 1
BUFFER 1
WRITE
BUFFER 2
WRITE
SI
CMD
n
n+1
Last Byte
· Completes writing into selected buffer
· Starts self-timed erase/program operation
CS
r r r r r , PA9-7
PA6-0, BFA8
BFA7-0
SI
CMD
X
X···X, BFA8
BFA7-0
n
n+1
Last Byte
· Completes writing into selected buffer
CS
SI
CMD
r r r r r, PA9-7
PA6-0, X
CS
Starts self-timed erase/program operation
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 |
|---|---|
| AT45D021-TC | 2-Megabit 5-volt Only Serial DataFlash |
| AT45D021-TI | 2-Megabit 5-volt Only Serial DataFlash |
| AT45D041 | 4-Megabit 5-volt Only Serial DataFlash |
| AT45D041-JC | 4-Megabit 5-volt Only Serial DataFlash |
| AT45D041-JI | 4-Megabit 5-volt Only Serial DataFlash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45D021-TC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-Megabit 5-volt Only Serial DataFlash |
| AT45D021-TI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-Megabit 5-volt Only Serial DataFlash |
| AT45D02-RC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:(183.07 k) |
| AT45D041 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 5-volt Only Serial DataFlash |
| AT45D041A | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 5-volt Only Serial DataFlash |
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