CYD18S72V18-167BGI Cypress Semiconductor Corp, CYD18S72V18-167BGI Datasheet - Page 14

• Manufacturer Part Number: CYD18S72V18-167BGI
• Description: CYD18S72V18-167BGI
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYD18S72V18-167BGI

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Synchronous
• Memory Size: 18M (256K x 72)
• Speed: 167MHz
• Interface: Parallel
• Voltage - Supply: 1.42 V ~ 1.58 V, 1.7 V ~ 1.9 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 7. Burst Counter and Mask Register Control Operations
The burst counter and mask register control operation for any port follows.
Notes
Document Number: 38-06082 Rev. *J
28. “X” = Don’t Care, “H” = HIGH, “L” = LOW.
29. Counter operation and mask register operation is independent of chip enables.
C
X
MRST
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
CNTRST CNT/MSK CNTEN ADS RET
X
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
X
X
L
L
L
L
L
H
H
H
H
H
H
H
X
X
X
L
L
L
L
L
L
H
H
H
H
H
X
X
X
X
X
L
L
X
L
L
L
Master reset
Counter reset
Mask reset
Counter load for burst/
external address load
for non-burst
Mask load
Retransmit
Counter increment
Counter hold
Counter readback
Mask readback
Busy address
readback
Reserved
Reserved
Reserved
Reserved
Reserved
Operation
[28, 29]
Reset address counter to all 0s, mask register
to all 1s, and busy address to all 0s.
Reset counter and mirror unmasked portion to
all 0s.
Reset mask register to all 1s.
Load burst counter and mirror with external
address value presented on address lines.
Load mask register with value presented on
the address lines.
Load counter with value in the mirror register.
Internally increment address counter value.
Constantly hold the address value for multiple
clock cycles.
Read out counter internal value on address
lines.
Read out mask register value on address
lines.
Read out first busy address after last busy
address readback.
Description
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