CYD18S72V-100BBI Cypress Semiconductor Corp, CYD18S72V-100BBI Datasheet - Page 20

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

Specifications of CYD18S72V-100BBI

• 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: -40°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Switching Waveforms
Notes
Document Number : 38-06069 Rev. *K
Readback State of Address Counter or Mask Register
41. CE
42. Address in output mode. Host must not be driving address bus after t
43. Address in input mode. Host can drive address bus after t
44. An * is the internal value of the address counter (or the mask register depending on the CNT/MSK level) being Read out on the address lines.
EXTERNAL
ADDRESS
DATA
INTERNAL
ADDRESS
CNTEN
A
0
0
ADS
= OE = BE0 – BE7 = LOW; CE
–A
CLK
OUT
17
t
t
SCN
SAD
EXTERNAL
ADDRESS
t
SA
LOAD
Q
A
x-2
t
t
n
HCN
t
HAD
HA
t
CH2
t
CYC2
t
CL2
READBACK
COUNTER
INTERNAL
ADDRESS
1
= R/W = CNTRST = MRST = HIGH.
(continued)
Q
x-1
A
n
t
CD2
INCREMENT
CKHZ
Q
n
.
t
t
CA2
CKHZ
or t
CKLZ
CM2
in next clock cycle.
A
n+1
[41, 42, 43, 44]
A
n*
t
CKLZ
A
n+2
Q
n+1
A
Q
n+3
n+2
Q
CYD04S72V
CYD09S72V
CYD18S72V
A
n+3
n+4
Page 20 of 26
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