nm93c56 Fairchild Semiconductor, nm93c56 Datasheet - Page 9
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nm93c56
Manufacturer Part Number
nm93c56
Description
2048-bit Serial Cmos Eeprom Microwire ?ynchronous Bus
Manufacturer
Fairchild Semiconductor
Datasheet
1.NM93C56.pdf
(13 pages)
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NM93C56 Rev. E
WRITE DISABLE CYCLE (WDS)
CS
SK
DI
DO
9 3 C 5 6 :
A d d r e s s b i t s p a t t e r n - > 0 - 0 - x - x - x - x - x - x ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 )
WRITE CYCLE (WRITE)
CS
SK
DI
DO
9 3 C 5 6 :
A d d r e s s b i t s p a t t e r n - > 0 - A 6 - A 5 - A 4 - A 3 - A 2 - A 1 - A 0 ; ( A 6 - A 0 - > U s e r d e f i n e d )
D a t a b i t s p a t t e r n
WRITE ALL CYCLE (WRALL)
CS
SK
DI
DO
9 3 C 5 6 :
A d d r e s s b i t s p a t t e r n - > 0 - 1 - x - x - x - x - x - x ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 )
D a t a b i t s p a t t e r n
(Continued)
S t a r t
B i t
1
- > U s e r d e f i n e d
S t a r t
B i t
1
S t a r t
B i t
- > U s e r d e f i n e d
1
O p c o d e
B i t s ( 2 )
0
O p c o d e
B i t s ( 2 )
0
O p c o d e
B i t s ( 2 )
0
0
1
A7
0
A7
A6
A7
A d d r e s s
B i t s ( 8 )
A6
A d d r e s s
B i t s ( 8 )
A6
A d d r e s s
B i t s ( 8 )
A1
A1
A0
High - Z
A1
A0
High - Z
t
CS
A0
D15 D14
High - Z
D15 D14
D a t a
B i t s ( 1 6 )
D a t a
B i t s ( 1 6 )
D1
D0
D1
D0
t
CS
t
WP
Busy
t
CS
t
WP
Ready
Busy
Ready
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