cym1464 Cypress Semiconductor Corporation., cym1464 Datasheet - Page 4

• Manufacturer Part Number: cym1464
• Description: 512kx8 Static Ram Module Semiconductor
• Manufacturer: Cypress Semiconductor Corporation.

Switching Characteristics
Switching Waveforms
Notes:
Document #: 38-05272 Rev. **
6.
7.
8.
Read Cycle No. 2
WRITE CYCLE
t
t
t
t
t
t
t
t
t
Read Cycle No. 1
WC
SCS
AW
HA
PWE
SD
HD
LZWE
HZWE
Parameter
DATAOUT
DATA OUT
CURRENT
ADDRESS
WE is HIGH for read cycle.
Device is continuously selected, CS = V
Address valid prior to or coincident with CS transition LOW.
SUPPLY
V
CS
OE
CC
[5]
Write Cycle Time
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
WE Pulse Width
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
WE LOW to High Z
[6,7]
[6,8]
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
PU
t
Description
LZCS
Over the Operating Range (continued)
IL
.
t
[4]
ACS
t
LZOE
t
OHA
t
DOE
50%
t
AA
t
RC
Min.
35
30
30
25
20
3
2
0
1464-35
t
RC
Max.
15
[3]
DATA VALID
Min.
45
40
40
35
25
3
3
0
1464-45
Max.
15
DATA VALID
t
HZOE
t
HZCS
Min.
55
50
50
40
35
3
3
0
1464-55
t
PD
50%
Max.
IMPEDANCE
20
CYM1464
HIGH
Page 4 of 8
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ICC
ISB