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参数资料
| 型号： | 25AA080AST |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | 8K SPI Bus Serial EEPROM |
| 中文描述： | 8K的SPI总线串行EEPROM |
| 文件页数： | 2/24页 |
| 文件大小： | 523K |
| 代理商： | 25AA080AST |
25XX080A/B
DS21808B-page 10
2003 Microchip Technology Inc.
2.5
Read Status Register Instruction
(RDSR)
The Read Status Register instruction (RDSR) provides
access to the Status Register. 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
25XX080A/B 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 or the Status
Register, when set to a ‘0’, the latch prohibits writes to
the array or the Status Register. 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 in Figure 2-7. These bits are nonvolatile and are
shown in Table 2-3.
See Figure 2-6 for the RDSR timing sequence.
FIGURE 2-6:
READ STATUS REGISTER TIMING SEQUENCE (RDSR)
7
654
3
2
1
0
W/R
–
W/R
R
WPEN
X
BP1
BP0
WEL
WIP
W/R = writable/readable. R = read-only.
SO
SI
CS
9
1011
12131415
11
0
00
765
4
2
1
0
instruction
data from Status Register
high-impedance
SCK
0
234567
1
8
3
相关PDF资料 |
PDF描述 |
|---|---|
| 25AA160-I/SN | 2K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| 25AA256-EMF | 256K SPI Bus Serial EEPROM |
| 25BF30-Q-1-3F | ROTARY OPTICAL POSITION ENCODER |
| 25BF30-Q-1-6 | ROTARY OPTICAL POSITION ENCODER |
| 25BF90-Q-1-3 | ROTARY OPTICAL POSITION ENCODER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 25AA080AT-E/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AT-E/MSG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AT-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AT-E/PG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AT-E/SN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
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