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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
t
BLE/BHE LOW to Data Valid
DBE
t
BLE/BHE LOW to Low Z
LZBE
t
BLE/BHE HIGH to HIGH Z
HZBE
[17]
Write Cycle
t
Write Cycle Time
WC
t
CE LOW to Write End
SCE
t
Address Set-up to Write End
AW
t
Address Hold from Write End
HA
t
Address Set-up to Write Start
SA
t
WE Pulse Width
PWE
t
BLE/BHE LOW to Write End
BW
t
Data Set-up to Write End
SD
t
Data Hold from Write End
HD
t
WE LOW to High-Z
HZWE
t
WE HIGH to Low-Z
LZWE
Notes:
14. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns (1 V/ns) or less, timing reference levels of V
pulse levels of 0 to V
, and output loading of the specified I
CC(typ.)
15. At any given temperature and voltage condition, t
given device.
16. t
, t
, t
, and t
transitions are measured when the outputs enter a high impedence state.
HZOE
HZCE
HZBE
HZWE
17. The internal Write time of the memory is defined by the overlap of WE, CE = V
of these signals can terminate a write by going INACTIVE. The data input set-up and hold timing should be referenced to the edge of the signal that terminates
the write.
Document #: 38-05340 Rev. *F
Over the Operating Range
Description
Min.
45
10
[15]
5
[15, 16]
[15]
10
[15, 16]
0
[15]
10
[15, 16]
45
40
40
0
0
35
40
25
0
[15, 16]
[15]
10
/I
OL
OH
is less than t
HZCE
LZCE
[14]
[11]
45 ns
55 ns
Max.
Min.
Max.
55
45
55
10
45
55
25
25
5
15
20
10
20
20
0
45
55
45
55
10
15
20
55
40
40
0
0
40
40
25
0
15
20
10
as shown in the "AC Test Loads and Waveforms" section.
, t
is less than t
, t
is less than t
HZBE
LZBE
HZOE
, BHE and/or BLE = V
. All signals must be ACTIVE to initiate a write and any
IL
IL
CY62147DV30
70 ns
Min.
Max.
Unit
70
ns
70
ns
10
ns
70
ns
35
ns
5
ns
25
ns
10
ns
25
ns
0
ns
70
ns
70
ns
10
ns
25
ns
70
ns
60
ns
60
ns
0
ns
0
ns
45
ns
60
ns
30
ns
0
ns
25
ns
10
ns
/2, input
CC(typ)
, and t
is less than t
for any
LZOE
HZWE
LZWE
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