fm93cs56 Fairchild Semiconductor, fm93cs56 Datasheet - Page 12

• Manufacturer Part Number: fm93cs56
• Description: Microwire ? Bus Interface 2048-bit Serial Eeprom With Data Protect And Sequential Read
• Manufacturer: Fairchild Semiconductor

FM93CS56 Rev. C.1
PROTECT REGISTER CLEAR CYCLE (PRCLEAR)
PRE
PE
CS
SK
DI
DO
93CS56:
Address bits patter n -> 1-1-1-1-1-1-1-1
PROTECT REGISTER WRITE CYCLE (PRWRITE)
PRE
PE
CS
SK
DI
DO
93CS56:
Address bits pattern -> x-A6-A5-A4-A3-A2-A1-A0; (x -> Don't Care, can be 0 or 1); ( A6-A0 -> User defined )
PROTECT REGISTER DISABLE CYCLE (PRDS)
PRE
PE
CS
SK
DI
DO
93CS56:
Address bits patter n -> 0-0-0-0-0-0-0-0
(Continued)
Star t
Bit
1
Star t
Bit
Star t
Bit
Opcode
Bits(2)
0
1
1
1
Opcode
Bits(2)
Opcode
Bits(2)
1
0
High - Z
A7
1
0
A6
High - Z
High - Z
Address
Bits(8)
A7
A7
A1
A6
A6
A0
Address
Bits(8)
Address
Bits(8)
t
CS
A1
t
A1
WP
Busy
A0
A0
Ready
t
t
CS
CS
t
t
WP
WP
Busy
Busy
Ready
Ready
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