cym1861v33 Cypress Semiconductor Corporation., cym1861v33 Datasheet - Page 5

• Manufacturer Part Number: cym1861v33
• Description: 2,048k X 32 3.3v Static Ram Module
• Manufacturer: Cypress Semiconductor Corporation.

Switching Waveforms
Truth Table
Write Cycle No. 1 (WE Controlled)
Write Cycle No. 2 (CS Controlled)
Note:
CS
10. If CS goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
DATA OUT
H
ADDRESS
DATA OUT
L
L
L
ADDRESS
DATA IN
DATA IN
WE OE
H
H
X
L
WE
WE
CS
CS
X
X
H
L
High Z
Data Out
Data In
High Z
Inputs/Output
(continued)
t
DATA UNDEFINED
DATA UNDEFINED
SA
[6,10]
[6]
Deselect/Power-Down
Read
Write
Deselect
PRELIMINARY
t
SA
Mode
t
SCS
t
t
AW
AW
t
t
WC
WC
5
t
HZWE
t
HZWE
DATA VALID
t
DATA VALID
t
PWE
PWE
t
t
t
SD
SCS
SD
HIGH IMPEDANCE
HIGH IMPEDANCE
t
t
HD
HD
t
LZWE
t
t
HA
HA
CYM1861V33
1861V33–8
1861V33–7