CY7C4811-10AC Cypress Semiconductor Corp, CY7C4811-10AC Datasheet - Page 16

• Manufacturer Part Number: CY7C4811-10AC
• Description: IC SYNC FIFO 512X9X2 64LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C4811-10AC

• Function: Synchronous, Dual Port
• Memory Size: 9.2K (512 x 9 x 2)
• Data Rate: 100MHz
• Access Time: 8ns
• Voltage - Supply: 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1256

Flag Operation
The CY7C48X1 devices provide four flag pins to indicate the
condition of the FIFO contents. Empty, Full, (PAEA,PAEB), and
(PAFA,PAFB) are synchronous.
Full Flag
The Full Flag (FFA,FFB) will go LOW when the device is full. Write
operations are inhibited whenever (FFA,FFB) is LOW regardless of
the state of (WENA1,WENB1) and (WENA2/LDA,WENB2/LDB).
Table 2. Status Flags.
Document #: 38-06005 Rev. **
0
1 to n
(n+1) to (256-(m+1))
(256 m)
256
0
1 to n
(n+1) to (2048 (m+1)) (n+1) to (4096 (m+1)) (n+1) to (8192 (m+1))
(2048 m)
2048
Notes:
25. n =Empty Offset (n=7 default value).
26. m = Full Offset (m=7 default value).
[25]
[25]
CY7C4831
[26]
CY7C4801
[26]
to 255
to 2047
Number of Words in FIFO
0
1 to n
(4096 m)
4096
[25]
CY7C4841
0
1 to n
(n+1) to (512-(m+1))
(512 m)
512
Number of Words in FIFO
[26]
[25]
to 4095
[26]
CY7C4811
to 511
0
1 to n
(8192 m)
8192
[25]
CY7C4851
[26]
to 8191
0
1 to n
(n+1) to (1024 (m+1))
(1024 m)
1024
(FFA,FFB) is synchronized to (WCLKA,WCLKB), i.e., it is exclusively
updated by each rising edge of (WCLKA,WCLKB).
Empty Flag
The Empty Flag (EFA,EFB) will go LOW when the device is empty.
Read operations are inhibited whenever (EFA,EFB) is LOW, regard-
less of the state of (RENA1,RENB1) and (RENA2,RENB2.
(EFA,EFB) is synchronized to (RCLKA,RCLKB), i.e., it is exclusively
Full Flag.
[25]
CY7C4821
[26]
FF
H
H
H
H
to 1023
L
PAF
H
H
H
L
L
PAE
H
H
H
L
L
CY7C4831/4841/4851
CY7C4801/4811/4821
FF
EF
H
H
H
H
L
H
H
H
H
L
PAF
H
H
H
L
L
Page 16 of 23
PAE
H
H
H
L
L
EF
H
H
H
H
L