CY7C0852V-167AXC Cypress Semiconductor Corp, CY7C0852V-167AXC Datasheet - Page 21

• Manufacturer Part Number: CY7C0852V-167AXC
• Description: IC SRAM 4MBIT 167MHZ 176LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C0852V-167AXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Synchronous
• Memory Size: 4M (128K x 36)
• Speed: 167MHz
• Interface: Parallel
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-06059 Rev. *I
Switching Waveforms
Bank Select Read
Notes:
25. In this depth-expansion example, B1 represents Bank #1 and B2 is Bank #2; each bank consists of one Cypress CY7C0851V/CY7C0852V device from this data
26.
27. Output state (HIGH, LOW, or high-impedance) is determined by the previous cycle control signals.
28. During “No Operation,” data in memory at the selected address may be corrupted and should be rewritten to ensure data integrity.
29.
30. CE
ADDRESS
ADDRESS
Read-to-Write-to-Read (OE = LOW)
DATA
DATA
ADDRESS
DATA
sheet. 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
ADS = CNTEN= B0 – B3 = OE = LOW; MRST = CNTRST = CNT/MSK = HIGH.
CE
OUT(B2)
0
OUT(B1)
0
CE
CE
CLK
R/W
= B0 – B3 = R/W = LOW; CE
OUT
= OE = B0 – B3 = LOW; CE
CE
CLK
IN
(B1)
(B1)
(B2)
(B2)
t
t
t
SW
SC
SA
t
t
t
t
SA
SC
SA
SC
(B1)
[25, 26]
= ADDRESS
A
n
A
A
0
t
0
CH2
t
CH2
t
(continued)
t
CYC2
1
t
t
1
HW
HC
HA
(B2)
= R/W = CNTRST = MRST = HIGH.
t
t
t
= CNTRST = MRST = CNT/MSK = HIGH. When R/W first switches low, since OE = LOW, the Write operation cannot be
t
t
CYC2
HA
HC
HA
HC
.
t
CL2
t
CL2
[24, 27, 28, 29, 30]
A
READ
n+1
A
A
t
CD2
1
1
t
CD2
t
SW
t
Q
SC
n
Q
t
A
0
SC
n+2
t
A
CKHZ
NO OPERATION
A
2
2
t
t
DC
HC
t
HW
t
HC
t
CD2
t
SD
A
D
n+2
n+2
Q
t
A
A
HD
1
3
t
3
DC
t
t
CKLZ
CKHZ
WRITE
t
CD2
CY7C0851V/CY7C0852V
CY7C0831V/CY7C0832V
A
n+3
Q
A
A
4
4
2
t
t
t
CKHZ
CD2
CKLZ
READ
t
CKLZ
Q
3
A
n+4
Page 21 of 32
A
t
A
CD2
5
t
5
CKLZ
t
t
CKHZ
CD2
Q
n+3
Q
4