CY7C1041B Cypress Semiconductor, CY7C1041B Datasheet - Page 8

• Manufacturer Part Number: CY7C1041B
• Description: 256K x 16 Static RAM
• Manufacturer: Cypress Semiconductor

Switching Waveforms
Truth Table
CE
Write Cycle No. 3 (WE Controlled, LOW)
H
BHE, BLE
L
L
L
L
L
L
L
DATA I/O
ADDRESS
CE
OE
WE
H
X
X
X
X
L
L
L
WE
X
H
H
H
H
L
L
L
BLE
X
H
H
X
L
L
L
L
BHE
t
SA
(continued)
H
H
X
X
L
L
L
L
High Z
Data Out
Data Out
High Z
Data In
Data In
High Z
High Z
OE
I/O
0
–I/O
7
t
AW
High Z
Data Out
High Z
Data Out
Data In
High Z
Data In
High Z
t
SCE
I/O
t
t
t
BW
WC
HZWE
8
8
–I/O
15
t
PWE
Power Down
Read All bits
Read Lower bits only
Read Upper bits only
Write All bits
Write Lower bits only
Write Upper bits only
Selected, Outputs Disabled
t
SD
Mode
t
HD
t
LZWE
t
HA
CY7C1041B
Standby (I
Active (I
Active (I
Active (I
Active (I
Active (I
Active (I
Active (I
Power
1041B-10
CC
CC
CC
CC
CC
CC
CC
SB
)
)
)
)
)
)
)
)