參數(shù)資料
型號(hào)： AT45DB011D-MU
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, DSO8
封裝： 6 X 5 MM, 1 MM HEIGHT, GREEN, MLF-8
文件頁(yè)數(shù)： 17/52頁(yè)
文件大?。?/td> 1107K
代理商： AT45DB011D-MU
17
3639B–DFLASH–02/07
AT45DB011D [Preliminary]
9.1.3
Read Sector Protection Register Command
To read the Sector Protection Register, the CS pin must first be asserted. Once the CS pin has
been asserted, an opcode of 32H and 3 dummy bytes must be clocked in via the SI pin. After the
last bit of the opcode and dummy bytes have been clocked in, any additional clock pulses on the
SCK pins will result in data for the content of the Sector Protection Register being output on the
SO pin. The first byte corresponds to sector 0 (0a, 0b), the second byte corresponds to sector 1,
the third byte corresponds to sector 2, and the last byte (byte 4) corresponds to sector 3. Once
the last byte of the Sector Protection Register has been clocked out, any additional clock pulses
will result in undefined data being output on the SO pin. The CS must be deasserted to termi-
nate the Read Sector Protection Register operation and put the output into a high-impedance
state.
Note:
xx = Dummy Byte
Figure 9-4.
Read Sector Protection Register
9.1.4
Various Aspects About the Sector Protection Register
The Sector Protection Register is subject to a limit of 10,000 erase/program cycles. Users are
encouraged to carefully evaluate the number of times the Sector Protection Register will be
modified during the course of the applications’ life cycle. If the application requires that the Sec-
tor Protection Register be modified more than the specified limit of 10,000 cycles because the
application needs to temporarily unprotect individual sectors (sector protection remains enabled
while the Sector Protection Register is reprogrammed), then the application will need to limit this
practice. Instead, a combination of temporarily unprotecting individual sectors along with dis-
abling sector protection completely will need to be implemented by the application to ensure that
the limit of 10,000 cycles is not exceeded.
Command
Byte 1
Byte 2
Byte 3
Byte 4
Read Sector Protection Register
32H
xxH
xxH
xxH
Opcode
X
X
X
Data Byte
n
Data Byte
n + 1
CS
Data Byte
n + 3
SI
SO
Each transition
represents
8
b
its
相關(guān)PDF資料
PDF描述
AT45DB011D-SSU 1-megabit 2.7-volt DataFlash
AT45DB011D-SU 1-megabit 2.7-volt DataFlash
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT45DB011D-SH 制造商:Atmel Corporation 功能描述:DATAFLASH SERIAL 20MHZ 1MB 45DB011
AT45DB011D-SH SL954 制造商:Adesto Technologies Corporation 功能描述:IC FLASH 1MBIT 66MHZ 8SOIC
AT45DB011D-SH-B 功能描述:閃存 1M 2.7-3.6V, 66Mhz Serial 閃存 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(wèn)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
AT45DB011D-SHET-T 制造商:Adesto Technologies Corporation 功能描述:8-SOIC-W, IND TEMP, 2.7V, T&R - Tape and Reel
AT45DB011D-SHGK-T 制造商:Adesto Technologies Corporation 功能描述:8-SOIC-W, IND TEMP, 2.7V, T&R - Tape and Reel
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