X28C010 查看數據表（PDF） - Xicor -> Intersil

零件编号

产品描述 (功能)

生产厂家

X28C010

5 Volt, Byte Alterable E2PROM

Xicor -> Intersil 

X28C010

Software Data Protection

Figure 6. Timing Sequence—Byte or Page Write

VCC

0V

DATA

ADDR

CE

AA

5555

55

2AAA

WE

A0

5555

≤tBLC MAX

WRITES

OK

tWC

BYTE

OR

PAGE

(VCC)

WRITE

PROTECTED

Figure 7. Write Sequence for

Software Data Protection

WRITE DATA AA

TO ADDRESS

5555

WRITE DATA 55

TO ADDRESS

2AAA

WRITE DATA A0

TO ADDRESS

5555

WRITE DATA XX

TO ANY

ADDRESS

WRITE LAST

BYTE TO

LAST ADDRESS

OPTIONAL

BYTE/PAGE

LOAD OPERATION

3858 FHD F16

Regardless of whether the device has previously been

protected or not, once the software data protection

algorithm is used and data has been written, the X28C010

will automatically disable further writes unless another

command is issued to cancel it. If no further commands

are issued the X28C010 will be write protected during

power-down and after any subsequent power-up. The

state of A15 and A16 while executing the algorithm is

don’t care.

Note: Once initiated, the sequence of write operations

should not be interrupted.

AFTER tWC

RE-ENTERS DATA

PROTECTED STATE

3858 FHD F17

7

Share Link: