CY7C199
Switching Waveforms (continued)
[13, 14]
Read Cycle No. 2
t
RC
CE
t
ACE
OE
t
t
HZOE
t
DOE
HZCE
t
LZOE
HIGH
IMPEDANCE
HIGH IMPEDANCE
DATA OUT
DATA VALID
t
LZCE
t
PD
t
PU
V
ICC
CC
SUPPLY
CURRENT
50%
50%
ISB
C199–9
[10, 15, 16]
Write Cycle No. 1 (WE Controlled)
t
WC
ADDRESS
CE
t
t
AW
HA
t
SA
t
PWE
WE
OE
t
SD
t
HD
DATA VALID
IN
DATA I/O
t
HZOE
C199–10
[10, 15, 16]
Write Cycle No. 2 (CE Controlled)
t
WC
ADDRESS
CE
t
SCE
t
SA
t
t
HA
AW
WE
t
t
HD
SD
DATA I/O
DATA
VALID
IN
C199–11
Notes:
14. Address valid prior to or coincident with CEtransition LOW.
15. Data I/O is high impedance if OE = VIH
.
16. If CEgoes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
7
CYPRESS [ CYPRESS ]
