fm93cs56 Fairchild Semiconductor, fm93cs56 Datasheet - Page 9

• 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
SYNCHRONOUS DATA TIMING
CS
SK
PRE
PE
DI
DO (Data Read)
DO (Status Read)
NORMAL READ CYCLE (READ)
PRE
PE
CS
SK
DI
DO
93CS56:
Address bits patter n -> x-A6-A5-A4-A3-A2-A1-A0; (x -> Don't Care, can be 0 or 1); ( A6-A0 -> User defined )
SEQUENTIAL READ CYCLE (PRE = 0; PE = X)
PRE
CS
SK
DI
DO
9 3 C S 5 6 :
A d d r e s s b i t s p a t t e r n - > x - A 6 - A 5 - A 4 - A 3 - A 2 - A 1 - A 0 ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 ) ; ( A 6 - A 0 - > U s e r d e f i n e d )
t
PRES
t
Star t
Bit
PES
1
S t a r t
B i t
1
Opcode
Bits(2)
1
t
CSS
O p c o d e
B i t s ( 2 )
t
1
DIS
t
Valid
Input
SV
0
High - Z
High - Z
0
t
A7
DIH
t
SKH
A7
A6
t
Address
Bits(8)
PD
A d d r e s s
B i t s ( 8 )
A1
A0
D u m my
B i t
t
SKL
A0
0
Output
Dummy
Bit
Valid
0
Valid
Input
D15
t
DH
D15
D a t a ( n )
t
D0
PD
D1
Valid Status
D0
D15
D a t a ( n + 1 )
Output
Valid
t
CS
D0
D15
D a t a ( n + 2 )
D0
t
CSH
t
t
PEH
PREH
t
t
DF
DF
t
CS
www.fairchildsemi.com