Cypress CY7C1399B - Manual (Page 7)

CY7C1399B
Document #: 38-05071 Rev. *A Page 7 of 10
Notes:
13. Data I/O is high impedance if OE = V
IH
.
14. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
15. During this period, the I/Os are in the output state and input signals should not be applied.
Switching Waveforms (continued)
t
HD
t
SD
t
PWE
t
SA
t
HA
t
AW
t
WC
DATA I/O
ADDRESS
CE
WE
OE
t
HZOE
DATA
IN
VALID
Write Cycle No. 1 (WE Controlled)
[8, 13, 14]
NOTE 15
t
WC
t
AW
t
SA
t
HA
t
HD
t
SD
t
SCE
WE
DATA I/O
ADDRESS
CE
DATA
IN
VALID
Write Cycle No. 2 (CE Controlled)
[8, 13, 14]
DATA I/O
ADDRESS
t
HD
t
SD
t
LZWE
t
SA
t
HA
t
AW
t
WC
CE
WE
t
HZWE
DATA
IN
VALID
Write Cycle No. 3 (WE Controlled, OE LOW)
[9, 14]
NOTE 15