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参数资料
| 型号： | 25AA256-EMF |
| 厂商： | Microchip Technology Inc. |
| 元件分类： | EEPROM |
| 英文描述： | 256K SPI Bus Serial EEPROM |
| 中文描述： | 256K SPI总线串行EEPROM |
| 文件页数： | 4/26页 |
| 文件大小： | 367K |
| 代理商： | 25AA256-EMF |
25AA256/25LC256
DS21822C-page 12
Preliminary
2003 Microchip Technology Inc.
2.7
Data Protection
The following protection has been implemented to
prevent inadvertent writes to the array:
The write enable latch is reset on power-up
A write enable instruction must be issued to set
the write enable latch
After a byte write, page write or Status register
write, the write enable latch is reset
CS must be set high after the proper number of
clock cycles to start an internal write cycle
Access to the array during an internal write cycle
is ignored and programming is continued
2.8
Power-On State
The 25XX256 powers on in the following state:
The device is in low-power Standby mode
(CS = 1)
The write enable latch is reset
SO is in high-impedance state
A high-to-low-level transition on CS is required to
enter active state
TABLE 2-4:
WRITE-PROTECT FUNCTIONALITY MATRIX
WEL
(SR bit 1)
WPEN
(SR bit 7)
WP
(pin 3)
Protected Blocks
Unprotected Blocks
Status Register
0xx
Protected
10x
Protected
Writable
11
0
(low)
Protected
Writable
Protected
11
1
(high)
Protected
Writable
x
= don’t care
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 25AA256-EMFG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256EP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256-EP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256-EPG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256ESM | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
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