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參數(shù)資料
| 型號(hào)： | AT45DB011D-SU |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | 1-megabit 2.7-volt DataFlash |
| 中文描述： | 1M X 1 FLASH 2.7V PROM, PDSO8 |
| 封裝： | 0.209 INCH, GREEN, PLASTIC, EIAJ, SOIC-8 |
| 文件頁數(shù)： | 21/52頁 |
| 文件大?。?/td> | 1107K |
| 代理商： | AT45DB011D-SU |
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21
3639B–DFLASH–02/07
AT45DB011D [Preliminary]
10.2.2
Reading the Security Register
The Security Register can be read by first asserting the CS pin and then clocking in an opcode
of 77H followed by three dummy bytes. After the last don’t care bit has been clocked in, the con-
tent of the Security Register can be clocked out on the SO pins. After the last byte of the
Security Register has been read, additional pulses on the SCK pin will simply result in undefined
data being output on the SO pins.
Deasserting the CS pin will terminate the Read Security Register operation and put the SO pins
into a high-impedance state.
Figure 10-4.
Read Security Register
11. Additional Commands
11.1
Main Memory Page to Buffer Transfer
A page of data can be transferred from the main memory to the buffer. To start the operation for
the DataFlash standard page size (264 bytes), a 1-byte opcode, 53H, must be clocked into the
device, followed by three address bytes comprised of 6 don’t care bits, 9 page address bits
(PA8 - PA0), which specify the page in main memory that is to be transferred, and 9 don’t care
bits. To perform a main memory page to buffer transfer for the binary page size (256 bytes), the
opcode 53H must be clocked into the device followed by three address bytes consisting of 7
don’t care bits, 9 page address bits (A16 - A8) which specify the page in the main memory that is
to be transferred, and 8 don’t care bits. The CS pin must be low while toggling the SCK pin to
load the opcode and the address bytes from the input pin (SI). The transfer of the page of data
from the main memory to the buffer will begin when the CS pin transitions from a low to a high
state. During the transfer of a page of data (t
XFR
), the status register can be read to determine
whether the transfer has been completed.
11.2
Main Memory Page to Buffer Compare
A page of data in main memory can be compared to the data in the buffer. To initiate the opera-
tion for the DataFlash standard page size, a 1-byte opcode, 60H, must be clocked into the
device, followed by three address bytes consisting of 6 don’t care bits, 9 page address bits
(PA8 - PA0) that specify the page in the main memory that is to be compared to the buffer, and
9 don’t care bits. To start a main memory page to buffer compare for a binary page size, the
opcode 60H must be clocked into the device followed by three address bytes consisting of 6
don’t care bits, 9 page address bits (A16 - A8) that specify the page in the main memory that is
to be compared to the buffer, and 8 don’t care bits. The CS pin must be low while toggling the
SCK pin to load the opcode and the address bytes from the input pin (SI). On the low-to-high
transition of the CS pin, the data bytes in the selected main memory page will be compared with
Opcode
X
X
X
Data Byte
n
Data Byte
n + 1
CS
Data Byte
n + x
Each transition
represents
8
b
its
SI
SO
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT45DB011 | 1-megabit 2.7-volt Only Serial DataFlash(1M位 2.7V串行數(shù)據(jù)閃速存儲(chǔ)器) |
| AT45DB021B-CU | 2-megabit 2.7-volt Only DataFlash |
| AT45DB021B-RU | 2-megabit 2.7-volt Only DataFlash |
| AT45DB021B-SU | 2-megabit 2.7-volt Only DataFlash |
| AT45DB021B-TU | 2-megabit 2.7-volt Only DataFlash |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT45DB011-JC | 制造商:Atmel Corporation 功能描述:1M X 1 FLASH 2.7V PROM, PQCC32 |
| AT45DB011-JI | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB011-SC | 功能描述:閃存 1M 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 |
| AT45DB011-SI | 功能描述:閃存 1M 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 |
| AT45DB011-XC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1-megabit 2.7-volt Only Serial DataFlash |
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