CY62148 CYPRESS [Cypress Semiconductor], CY62148 Datasheet - Page 6

• Manufacturer Part Number: CY62148
• Description: 512K x 8 MoBL Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Switching Waveforms
Write Cycle No. 1 (WE Controlled)
Notes:
10. Device is continuously selected. OE, CE = V
11. WE is HIGH for read cycle.
12. Address valid prior to or coincident with CE transition LOW.
13. Data I/O is high impedance if OE = V
14. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
15. During this period, the I/Os are in output state and input signals should not be applied.
Read Cycle No. 1
Read Cycle No. 2
DATA OUT
ADDRESS
DATA OUT
CURRENT
ADDRESS
DATA I/O
SUPPLY
V
WE
OE
CE
OE
CE
CC
[10, 11]
[11, 12]
NOTE
PREVIOUS DATA VALID
HIGH IMPEDANCE
15
t
PU
t
LZCE
t
SA
t
IH
HZOE
.
t
t
[8, 13, 14]
LZOE
ACE
IL
t
.
50%
OHA
t
DOE
t
AA
t
AW
t
RC
t
WC
6
t
RC
DATA
t
t
PWE
SD
IN
VALID
DATA VALID
DATA VALID
t
HA
CY62148V MoBL™
t
HD
t
t
HZOE
HZCE
t
PD
50%
IMPEDANCE
HIGH
62148V–8
62148V–6
62148V–7
I
I
CC
SB