CYD18S72V CYPRESS [Cypress Semiconductor], CYD18S72V Datasheet - Page 19

• Manufacturer Part Number: CYD18S72V
• Description: FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-06069 Rev. *D
Switching Waveforms
Counter Reset
Notes:
38. CE
39. No dead cycle exists during counter reset. A Read or Write cycle may be coincidental with the counter reset.
INTERNAL
ADDRESS
ADDRESS
DATA
CNTRST
DATA
CNTEN
ADS
R/W
0
CLK
OUT
= BE0 – BE7= LOW; CE
[51]
IN
t
SRST
A
[38, 39]
x
t
HRST
t
COUNTER
CH2
RESET
t
CYC2
1
t
= MRST = CNT/MSK = HIGH.
CL2
(continued)
t
SW
t
SD
D
0
t
t
HW
HD
ADDRESS 0
WRITE
0
PRELIMINARY
t
CKLZ
ADDRESS 0
READ
ADDRESS 1
t
CD2
READ
1
Q
A
0
n
ADDRESS A
t
READ
CD2
A
t
SA
n
n
A
Q
m
1
t
ADDRESS A
HA
READ
CYD04S72V
CYD09S72V
CYD18S72V
A
m
m
Page 19 of 26
Q
A
n
p
A
p