参数资料
| 型号： | 25AA640-I/SN |
| 厂商： | Microchip Technology |
| 文件页数： | 12/24页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 64KBIT 1MHZ 8SOIC |
| 标准包装： | 100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 64K (8K x 8) |
| 速度： | 1MHz |
| 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： | 1449 (CN2011-ZH PDF) |
| 其它名称： | 25AA640-I/SNG 25AA640-I/SNG-ND |
25AA640/25LC640
3.7
Data Protection
3.8
Power-On-State
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
The 25XX640 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 transition on CS is required to enter
the active state
.
TABLE 3-3:
WRITE-PROTECT FUNCTIONALITY MATRIX
WPEN
X
0
1
X
WP
X
X
Low
High
WEL
0
1
1
1
Protected Blocks
Protected
Protected
Protected
Protected
Unprotected Blocks
Protected
Writable
Writable
Writable
STATUS Register
Protected
Writable
Protected
Writable
DS21223H-page 12
? 2008 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 25AA640T | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:64K SPI Bus Serial EEPROM |
| 25AA640T-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:64K SPI Bus Serial EEPROM |
| 25AA640T-E/SN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:64K SPI Bus Serial EEPROM |
| 25AA640T-E/ST | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:64K SPI Bus Serial EEPROM |
| 25AA640T-I/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:64K SPI Bus Serial EEPROM |
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