Cypress Semiconductor CY7C141 Specification Sheet - Page 6

Browse online or download pdf Specification Sheet for Computer Hardware Cypress Semiconductor CY7C141. Cypress Semiconductor CY7C141 20 pages. 1k x 8 dual-port static ram

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Cypress Semiconductor CY7C141 Specification Sheet

Switching Characteristics

Parameter
Read Cycle
t
Read Cycle Time
RC
t
Address to Data Valid
AA
t
Data Hold from Address Change
OHA
t
CE LOW to Data Valid
ACE
t
OE LOW to Data Valid
DOE
t
OE LOW to Low Z
LZOE
t
OE HIGH to High Z
HZOE
t
CE LOW to Low Z
LZCE
t
CE HIGH to High Z
HZCE
t
CE LOW to Power Up
PU
t
CE HIGH to Power Down
PD
[16]
Write Cycle
t
Write Cycle Time
WC
t
CE LOW to Write End
SCE
t
Address Setup to Write End
AW
t
Address Hold from Write End
HA
t
Address Setup to Write Start
SA
t
R/W Pulse Width
PWE
t
Data Setup to Write End
SD
t
Data Hold from Write End
HD
t
R/W LOW to High Z
HZWE
t
R/W HIGH to Low Z
LZWE
Shaded areas contain preliminary information.
Notes
12. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V and output loading of the specified
I
/I
and 30 pF load capacitance.
OL
OH,
13. AC Test Conditions use V
= 1.6V and V
OH
14. At any given temperature and voltage condition for any given device, t
15. t
, t
, t
, t
, t
LZCE
LZWE
HZOE
LZOE
HZCE
16. The internal write time of the memory is defined by the overlap of CS LOW and R/W LOW. Both signals must be low to initiate a write and either signal can
terminate a write by going high. The data input setup and hold timing should be referenced to the rising edge of the signal that terminates the write.
Document #: 38-06002 Rev. *E
Over the Operating Range
Description
[13]
[13]
[13]
[10, 14, 15]
[10, 14, 15]
[10, 14, 15]
[10, 14, 15]
[10]
[10]
[15]
[15]
= 1.4V.
OL
HZCE
and t
are tested with C
= 5 pF as in part (b) of AC Test Loads. Transition is measured ±500 mV from steady state voltage.
HZWE
L
[7, 12]
7C130-25
[4]
7C131-15
7C131-25
7C131A-15
7C140-25
7C141-15
7C141-25
Min
Max
Min
15
25
15
0
0
15
10
3
3
10
3
5
10
0
0
15
15
25
12
20
12
20
2
2
0
0
12
15
10
15
0
0
10
0
0
is less than t
and t
is less than t
LZCE
HZOE
CY7C130, CY7C130A
CY7C131, CY7C131A
CY7C140, CY7C141
7C130-30
[4]
7C130A-30
7C131-30
Unit
7C140-30
7C141-30
Max
Min
Max
30
ns
25
30
ns
0
ns
25
30
ns
15
20
ns
3
ns
15
15
ns
5
ns
15
15
ns
0
ns
25
25
ns
30
ns
25
ns
25
ns
2
ns
0
ns
25
ns
15
ns
0
ns
15
15
ns
0
ns
.
LZOE
Page 6 of 19
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