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參數(shù)資料
| 型號： | 25AA020A |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 2K SPI Bus Serial EEPROM |
| 中文描述： | 2K SPI總線串行EEPROM |
| 文件頁數(shù)： | 10/28頁 |
| 文件大?。?/td> | 362K |
| 代理商： | 25AA020A |
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25AA020A/25LC020A
DS21833C-page 10
Preliminary
2006 Microchip Technology Inc.
2.5
Read Status Register Instruction
(RDSR)
The Read Status Register instruction (
RDSR
) provides
access to the STATUS register. See Figure 2-6 for the
RDSR
timing sequence. The STATUS register may be
read at any time, even during a write cycle. The
STATUS register is formatted as follows:
TABLE 2-2:
STATUS REGISTER
The
Write-In-Process (WIP)
bit indicates whether the
25XX020A is busy with a write operation. When set to
a ‘
1
’, a write is in progress, when set to a ‘
0
’, no write
is in progress. This bit is read-only.
The
Write Enable Latch (WEL)
bit indicates the status
of the write enable latch and is read-only. When set to
a ‘
1
’, the latch allows writes to the array, when set to a
‘
0
’, the latch prohibits writes to the array. The state of
this bit can always be updated via the
WREN
or
WRDI
commands regardless of the state of write protection
on the STATUS register. These commands are shown
in Figure 2-4 and Figure 2-5.
The
Block Protection (BP0 and BP1)
bits indicate
which blocks are currently write-protected. These bits
are set by the user issuing the
WRSR
instruction, which
is shown in Figure 2-7. These bits are nonvolatile and
are described in more detail in Table 2-3.
FIGURE 2-6:
READ STATUS REGISTER TIMING SEQUENCE (
RDSR
)
7
–
X
6
–
X
5
–
X
4
–
X
3
2
1
R
0
R
W/R
BP1
W/R
BP0
WEL
WIP
W/R = writable/readable. R = read-only.
SO
SI
CS
9
10
11
12
13
14
15
1
1
0
0
0
0
0
0
7
6
5
4
2
1
0
instruction
data from STATUS register
high-impedance
SCK
0
2
3
4
5
6
7
1
8
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 25AA040A | 4K SPI Bus Serial EEPROM |
| 25AA080 | 8K/16K 1.8V SPI Bus Serial EEPROM |
| 25AA160 | 8K/16K 1.8V SPI Bus Serial EEPROM |
| 25AA1024 | 1 Mbit SPI Bus Serial EEPROM |
| 25AA128 | 128K SPI Bus Serial EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 25AA020A/S16K | 功能描述:電可擦除可編程只讀存儲器 2K, 256 X 8, 1.8V SER EE, DIE in WAFFLE PK RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25AA020A/W16K | 功能描述:電可擦除可編程只讀存儲器 2K, 256 X 8, 1.8V SER EE, WAFER RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25AA020A/WF16K | 功能描述:電可擦除可編程只讀存儲器 2K, 256 X 8, 1.8V SER EE, WAFER on FRAME RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25AA020A_12 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K SPI Bus Serial EEPROM |
| 25AA020A-E/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K SPI Bus Serial EEPROM |
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