cym1821 Cypress Semiconductor Corporation., cym1821 Datasheet - Page 4

• Manufacturer Part Number: cym1821
• Description: 16k X 32 Static Ram Module
• Manufacturer: Cypress Semiconductor Corporation.

Switching Characteristics
READ CYCLE
t
t
t
t
t
t
t
t
t
t
t
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
RC
AA
OHA
ACS
DOE
LZOE
HZOE
LZCS
HZCS
PU
PD
WC
SCS
AW
HA
SA
PWE
SD
HD
LZWE
HZWE
Parameter
[7]
Read Cycle Time
Address to Data Valid
Data Hold from Address Change
CS LOW to Data Valid
OE LOW to Data Valid
OE LOW to Low Z
OE HIGH to High Z
CS LOW to Low Z
CS HIGH to High Z
CS LOW to Power-Up
CS HIGH to Power-Down
Write Cycle Time
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
Address Set-Up to Write Start
WE Pulse Width
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
WE LOW to High Z
Description
Over the Operating Range (continued)
[5]
[5, 6]
[6]
Min.
25
25
20
20
20
13
3
3
5
0
2
2
2
3
0
4
1821-25
Max.
25
25
15
15
10
25
7
[4]
Min.
35
10
35
25
25
25
15
3
3
0
2
2
2
5
0
1821-35
Max.
35
35
25
20
15
35
10
Min.
45
10
45
35
35
30
20
3
3
0
2
2
2
5
0
1821-45
CYM1821
Max.
45
45
30
20
20
45
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns