CYD18S72V-100BBC Cypress Semiconductor Corp, CYD18S72V-100BBC Datasheet - Page 16

• Manufacturer Part Number: CYD18S72V-100BBC
• Description: IC,SYNC SRAM,256KX72,CMOS,BGA,484PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYD18S72V-100BBC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Synchronous
• Memory Size: 18M (256K x 72)
• Speed: 100MHz
• Interface: Parallel
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Switching Waveforms
Bank Select Read
Notes
Document Number : 38-06069 Rev. *K
ADDRESS
ADDRESS
Read-to-Write-to-Read (OE = LOW)
33. In this depth-expansion example, B1 represents Bank #1 and B2 is Bank #2; each bank consists of one Cypress FLEx72 device from this data sheet. ADDRESS
34. ADS = CNTEN = BE0 – BE7 = OE = LOW; MRST = CNTRST = CNT/MSK = HIGH.
35. Output state (HIGH, LOW, or high-impedance) is determined by the previous cycle control signals.
36. During “No Operation,” data in memory at the selected address may be corrupted and should be rewritten to ensure data integrity.
37. CE
38. CE
DATA
DATA
ADDRESS
DATA
= ADDRESS
completed (labelled as no operation). One clock cycle is required to three-state the I/O for the Write operation on the next rising edge of CLK.
DATA
0
0
OUT(B2)
OUT(B1)
CE
CE
= BE0 – BE7 = R/W = LOW; CE
CLK
R/W
= OE = BE0 – BE7 = LOW; CE
OUT
CE
CLK
(B1)
(B1)
(B2)
IN
(B2)
(B2)
t
t
t
SW
SC
SA
.
t
t
t
t
SA
SC
SA
SC
[33, 34]
A
n
A
A
t
0
0
CH2
t
CH2
t
CYC2
t
t
t
HW
HC
HA
t
1
t
t
t
t
CYC2
1
HC
HC
HA
HA
(continued)
= R/W = CNTRST = MRST = HIGH.
= CNTRST = MRST = CNT/MSK = HIGH. When R/W first switches low, since OE = LOW, the Write operation cannot be
t
CL2
t
CL2
READ
A
n+1
A
A
[32, 35, 36, 37, 38]
t
CD2
1
1
t
CD2
t
SW
t
Q
SC
n
Q
t
A
0
SC
n+2
t
A
DC
A
2
2
t
t
DC
HC
t
HW
t
HC
t
CD2
NO OPERATION
A
n+2
Q
A
t
A
1
CKHZ
3
t
3
DC
t
t
CKLZ
CKHZ
t
CD2
t
SD
D
A
n+2
n+2
Q
A
A
t
HD
4
2
4
t
t
t
CKHZ
CD2
CKLZ
WRITE
Q
3
A
CYD04S72V
CYD09S72V
CYD18S72V
n+3
A
A
5
t
5
CKLZ
t
t
CKHZ
CD2
Page 16 of 26
(B1)
Q
4
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