参数资料
| 型号： | 25AA080A-I/SN |
| 厂商： | Microchip Technology |
| 文件页数： | 11/26页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 8KBIT 10MHZ 8SOIC |
| 标准包装： | 100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 8K (1K x 8) |
| 速度： | 10MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 管件 |
| 产品目录页面： | 1448 (CN2011-ZH PDF) |
| 其它名称： | 25AA080A-I/SNG 25AA080A-I/SNG-ND |
25XX080A/B
2.6
Write Status Register Instruction
See Figure 2-7 for the WRSR timing sequence.
( WRSR )
The Write Status Register instruction ( WRSR ) allows the
TABLE 2-3:
ARRAY PROTECTION
user to write to the nonvolatile bits in the Status
Register as shown in Table 2-2. The user is able to
select one of four levels of protection for the array by
writing to the appropriate bits in the Status Register.
The array is divided up into four segments. The user
has the ability to write-protect none, one, two or all four
of the segments of the array. The partitioning is
controlled as shown in Table 2-3.
The Write-Protect Enable (WPEN) bit is also a
nonvolatile bit that is available as an enable bit for the WP
BP1
0
0
1
1
BP0
0
1
0
1
Array Addresses
Write-Protected
none
upper 1/4
(0300h - 03FFh)
upper 1/2
(0200h - 03FFh)
all
(0000h - 03FFh)
pin. The Write-Protect (WP) pin and the Write-Protect
Enable (WPEN) bit in the Status Register control the
programmable hardware write-protect feature. Hardware
write protection is enabled when WP pin is low and the
WPEN bit is high. Hardware write protection is disabled
when either the WP pin is high or the WPEN bit is low.
When the chip is hardware write-protected, only writes to
nonvolatile bits in the Status Register are disabled. See
Table 2-4 for a matrix of functionality on the WPEN bit.
FIGURE 2-7:
CS
WRITE STATUS REGISTER TIMING SEQUENCE ( WRSR )
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
SCK
instruction
data to Status Register
SI
0
0
0
0
0
0
0
1
7
6
5
4
3
2
1
0
high-impedance
SO
? 2007 Microchip Technology Inc.
DS21808D-page 11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 25AA080AMS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080ASN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AST | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
| 25AA080AT-E/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM |
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