参数资料
型号: 25LC080A-E/MS
厂商: Microchip Technology
文件页数: 12/26页
文件大小: 0K
描述: IC EEPROM 8KBIT 10MHZ 8MSOP
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: 2.5 V ~ 5.5 V
工作温度: -40°C ~ 125°C
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
25XX080A/B
2.7
Data Protection
2.8
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 25XX080A/B 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)
0
1
1
1
WPEN
(SR bit 7)
x
0
1
1
WP
(pin 3)
x
x
0 (low)
1 (high)
Protected Blocks
Protected
Protected
Protected
Protected
Unprotected Blocks
Protected
Writable
Writable
Writable
Status Register
Protected
Writable
Protected
Writable
x = don’t care
DS21808D-page 12
? 2007 Microchip Technology Inc.
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