CY7C1470V33-200AXC Cypress Semiconductor Corp, CY7C1470V33-200AXC Datasheet - Page 12

• Manufacturer Part Number: CY7C1470V33-200AXC
• Description: IC,SYNC SRAM,2MX36,CMOS,QFP,100PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C1470V33-200AXC

• Format - Memory: RAM
• Memory Type: SRAM - Synchronous
• Memory Size: 72M (2M x 36)
• Speed: 200MHz
• Interface: Parallel
• Voltage - Supply: 3.135 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Partial Write Cycle Description
The partial write cycle description for parts CY7C1470V33/CY7C1472V33/CY7C1474V33 is as follows.
Document Number: 38-05289 Rev. *M
Read
Write – no bytes written
Write byte a – (DQ
Write byte b – (DQ
Write bytes b, a
Write byte c – (DQ
Write bytes c, a
Write bytes c, b
Write bytes c, b, a
Write byte d – (DQ
Write bytes d, a
Write bytes d, b
Write bytes d, b, a
Write bytes d, c
Write bytes d, c, a
Write bytes d, c, b
Write all bytes
Read
Write – no bytes written
Write byte a – (DQ
Write byte b – (DQ
Write both bytes
Read
Write – no bytes written
Write byte X − (DQ
Write all bytes
Notes
8. X = “Don't Care”, H = Logic HIGH, L = Logic LOW, CE stands for all chip enables active. BWx = 0 signifies at least one byte write select is active, BWx = valid
9. Write is defined by WE and BW
10. When a write cycle is detected, all I/Os are tristated, even during byte writes.
11. Table only lists a partial listing of the Byte Write combinations. Any combination of BW
signifies that the desired byte write selects are asserted, see Write Cycle Description table for details.
active.
Function (CY7C1470V33)
a
b
c
d
a
b
x
and DQP
and DQP
and DQP
and DQP
and DQP
and DQP
and DQP
Function (CY7C1472V33)
Function (CY7C1474V33)
[a:d]
c
a
d
a
b
x)
b
)
)
)
)
)
)
. See Write Cycle Description table for details.
WE
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
[a:d]
BW
is valid. Appropriate write will be done based on which Byte Write is
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
d
WE
H
L
L
L
L
WE
BW
H
L
L
L
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
c
BW
H
H
x
L
L
b
BW
[8, 9, 10, 11]
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
b
CY7C1470V33
CY7C1472V33
CY7C1474V33
All BW = L
BW
BW
H
H
H
x
L
L
x
L
Page 12 of 33
BW
a
x
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
a
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