25C320 MicrochipTechnology, 25C320 Datasheet - Page 6

• Manufacturer Part Number: 25C320
• Description: 32K5.0VSPIBusSerialEEPROM
• Manufacturer: MicrochipTechnology

25C320
TABLE 2-2:
FIGURE 2-1: WRITE TO STATUS REGISTER AND/OR ARRAY FLOWCHART
DS21159B-page 6
WPEN
X
X
0
0
1
1
Status Register
High
High
Low
Low
WP
X
X
WRITE PROTECT FUNCTIONALITY MATRIX
Write to
No
No
WEL
0
1
0
1
0
1
CS Returns High
Status Register
Do not write to
WPEN = 1?
WP is low?
to Status
WEL = 1?
Continue
Write
Reg?
Yes
Yes
Yes
Yes
Protected Blocks
Protected
Protected
Protected
Protected
Protected
Protected
No
No
Preliminary
Unprotected Block
Write to the
to array?
WEL = 1?
Write
Unprotected Blocks
Yes
Yes
Protected
Protected
Protected
Writable
Writable
Writable
Do not write to
No
No
Array
1996 Microchip Technology Inc.
To other
Commands
From other
Commands
Status Register
Protected
Protected
Protected
Protected
Writable
Writable