CY62148-55 CYPRESS [Cypress Semiconductor], CY62148-55 Datasheet - Page 4

• Manufacturer Part Number: CY62148-55
• Description: 512K x 8 Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Switching Waveforms
Read Cycle No.1
Read Cycle No. 2 (OE Controlled)
Write Cycle No. 1 (CE Controlled)
Notes:
10. Device is continuously selected. OE, CE = V
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 going HIGH, the output remains in a high-impedance state.
DATA OUT
11. WE is HIGH for read cycle.
ADDRESS
DATA I/O
DATA OUT
CURRENT
ADDRESS
ADDRESS
SUPPLY
CE
WE
CE
V
OE
CC
[10,11]
HIGH IMPEDANCE
t
PU
PREVIOUS DATA VALID
t
LZCE
IH
.
[11,12]
t
[13,14]
t
ACE
LZOE
IL
t
SA
.
t
PRELIMINARY
OHA
50%
t
DOE
t
AA
t
AW
t
RC
t
WC
4
t
PWE
t
RC
DATA VALID
t
SCE
t
SD
DATA VALID
t
HD
t
DATA VALID
HZOE
t
HA
t
HZCE
t
PD
50%
CY62148
IMPEDANCE
HIGH
62148-5
62148-6
62148-7
ICC
ISB