24C160T-P データシートの表示（PDF） - Microchip Technology
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24C160T-P Datasheet PDF : 12 Pages
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25C080/160
TABLE 2-2: WRITE PROTECT FUNCTIONALITY MATRIX
WPEN
0
0
1
1
X
X
WP
X
X
Low
Low
High
High
WEL
0
1
0
1
0
1
Protected Blocks
Protected
Protected
Protected
Protected
Protected
Protected
Unprotected Blocks
Protected
Writable
Protected
Writable
Protected
Writable
FIGURE 2-1: WRITE TO STATUS REGISTER AND/OR ARRAY FLOWCHART
Status Register
Protected
Writable
Protected
Protected
Protected
Writable
CS Returns High
Write
No
to Status
Reg?
Yes
No
WEL = 1?
Yes
No
WP is low?
Yes
No
WPEN = 1?
Yes
Write to
Status Register
Do not write to
Status Register
Continue
Write
No
to array?
Yes
No
WEL = 1?
Yes
Write to the
Unprotected Block
To other
Commands
Do not write to
Array
From other
Commands
DS21147F-page 6
Preliminary
© 1996 Microchip Technology Inc.
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