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參數(shù)資料
| 型號： | 25AA040EN |
| 元件分類： | EEPROM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 160K |
| 代理商： | 25AA040EN |
25AA040/25LC040/25C040
DS21204B-page 10
1998 Microchip Technology Inc.
3.7
Data Protection
The following protection has been implemented to pre-
vent 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.
The write enable latch is reset when the WP pin is
low.
3.8
Power On State
The 25xx040 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 low level on CS is required to enter active state.
.
TABLE 3-10:
WRITE PROTECT FUNCTIONALITY MATRIX
WP
WEL
Protected Blocks
Unprotected Blocks
Status Register
Low
High
High
X
0
1
Protected
Protected
Protected
Protected
Protected
Writable
Protected
Protected
Writable
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相關PDF資料 |
PDF描述 |
|---|---|
| 25AA040-EP | SPI Serial EEPROM |
| 25AA040-ESN | SPI Serial EEPROM |
| 25AA040IN | EEPROM |
| 25AA040-IP | SPI Serial EEPROM |
| 25AA040-ISN | High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 25AA040-EP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SPI Serial EEPROM |
| 25AA040-ESN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SPI Serial EEPROM |
| 25AA040-I/P | 功能描述:電可擦除可編程只讀存儲器 512x8 - 1.8V 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25AA040-I/PG | 功能描述:電可擦除可編程只讀存儲器 512x8 - 1.8V Lead Free Package 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25AA040-I/SN | 功能描述:電可擦除可編程只讀存儲器 512x8 - 1.8V 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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