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)： 19/52頁(yè)
文件大?。?/td> 1107K
代理商： AT45DB011D-MU
19
3639B–DFLASH–02/07
AT45DB011D [Preliminary]
10.1.1
Sector Lockdown Register
Sector Lockdown Register is a nonvolatile register that contains 4 bytes of data, as shown
below:
10.1.2
Reading the Sector Lockdown Register
The Sector Lockdown Register can be read to determine which sectors in the memory array are
permanently locked down. To read the Sector Lockdown Register, the CS pin must first be
asserted. Once the CS pin has been asserted, an opcode of 35H and 3 dummy bytes must be
clocked into the device via the SI pin. After the last bit of the opcode and dummy bytes have
been clocked in, the data for the contents of the Sector Lockdown Register will be clocked out
on the SO pin. The first byte corresponds to sector 0 (0a, 0b) the second byte corresponds to
sector 1 and the last byte (byte 4) corresponds to sector 3. After the last byte of the Sector Lock-
down Register has been read, additional pulses on the SCK pin will simply result in undefined
data being output on the SO pin.
Deasserting the CS pin will terminate the Read Sector Lockdown Register operation and put the
SO pin into a high-impedance state.
Table 10-2
details the values read from the Sector Lockdown Register.
Table 10-2.
Sector Lockdown Register
Figure 10-2.
Read Sector Lockdown Register
Sector Number
0 (0a, 0b)
1 to 3
Locked
See Below
FFH
Unlocked
00H
Table 10-1.
Sector 0 (0a, 0b)
0a
0b
Bit 3, 2
Data
Value
(Page 0-7)
(Page 8-127)
Bit 7, 6
Bit 5, 4
Bit 1, 0
Sectors 0a, 0b Unlocked
00
00
00
00
00H
Sector 0a Locked (Page 0-7)
11
00
00
00
C0H
Sector 0b Locked (Page 8-127)
00
11
00
00
30H
Sectors 0a, 0b Locked (Page 0-127)
11
11
00
00
F0H
Command
Byte 1
Byte 2
Byte 3
Byte 4
Read Sector Lockdown Register
35H
xxH
xxH
xxH
Note:
xx = Dummy Byte
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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