PRELIMINARY
Switching Characteristics
[3,6]
Over the Operating Range (continued)
62128–55
Parameter
t
HD
t
LZWE
t
HZWE
WE HIGH to Low Z
[8]
WE LOW to High Z
[7,8]
Description
Data Hold from Write End
Min.
0
5
20
Max.
CY62128
62128–70
Min.
0
5
25
Max.
Unit
ns
ns
ns
Shaded area contains advanced information.
Switching Waveforms
Read Cycle No.1
[10,11]
t
RC
ADDRESS
t
AA
t
OHA
DATA OUT
PREVIOUS DATA VALID
[11,12]
DATA VALID
62128-5
Read Cycle No. 2 (OE Controlled)
ADDRESS
t
RC
CE
1
CE
2
t
ACE
OE
t
HZOE
t
DOE
DATA OUT
V
CC
SUPPLY
CURRENT
t
LZOE
HIGH IMPEDANCE
t
LZCE
t
PU
50%
t
HZCE
DATA VALID
t
PD
50%
ISB
62128-6
HIGH
IMPEDANCE
ICC
Notes:
10. Device is continuously selected. OE, CE
1
= V
IL
, CE
2
= V
IH
.
11. WE is HIGH for read cycle.
12. Address valid prior to or coincident with CE
1
transition LOW and CE
2
transition HIGH.
4
CYPRESS [ CYPRESS SEMICONDUCTOR ]
