CY7C199
Switching Characteristics
Over the Operating Range (-20, -25, -35, -45)
[3, 7]
7C199-20
Parameter
t
PD
t
WC
t
SCE
t
AW
t
HA
t
SA
t
PWE
t
SD
t
HD
t
HZWE
t
LZWE
Write Cycle
[10,11]
Write Cycle Time
CE 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 LOW to
WE HIGH to
High-Z
[9]
Low-Z
[8]
3
20
15
15
0
0
15
10
0
10
3
25
18
20
0
0
18
10
0
11
3
35
22
30
0
0
22
15
0
15
3
45
22
40
0
0
22
15
0
15
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Description
CE HIGH to Power-down
Min.
Max.
20
7C199-25
Min.
Max.
20
7C199-35
Min.
Max.
20
7C199-45
Min.
Max.
25
Unit
ns
Switching Waveforms
Read Cycle No. 1
[12, 13]
t
RC
ADDRESS
t
AA
t
OHA
DATA OUT
PREVIOUS DATA VALID
DATA VALID
Read Cycle No. 2
[13, 14]
CE
t
ACE
OE
t
DOE
t
LZOE
HIGH IMPEDANCE
t
LZCE
V
CC
SUPPLY
CURRENT
t
PU
50%
t
PD
ICC
50%
ISB
t
HZOE
t
HZCE
DATA VALID
t
RC
HIGH
IMPEDANCE
DATA OUT
Notes:
12. Device is continuously selected. OE, CE = V
IL
.
13. WE is HIGH for read cycle.
14. Address valid prior to or coincident with CE transition LOW.
Document #: 38-05160 Rev. *A
Page 5 of 13
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