CY7C4801-25AC Cypress Semiconductor Corp, CY7C4801-25AC Datasheet - Page 17

• Manufacturer Part Number: CY7C4801-25AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4801-25AC

• Density: 4Kb
• Word Size: 9b
• Sync/async: Synchronous
• Expandable: Yes
• Package Type: TQFP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / Rohs Status: Not Compliant

Single Device Configuration
When FIFO A(B) is in a Single Device Configuration, the Read
Enable 2 RENA2(RENB2) control input can be grounded (see
Figure 2 ). in this configuration, the Write Enable2/Load
WRITE ENABLE2/LOAD(WENA2/LDA,WENB/LDB)
Figure 2. Block Diagram of 256 x 9,512 x 9,1024 x 9,2048 x 9,4096 x 9,8192 x 9 Double Sync FIFO
WRITE ENABLE 1 (WENA1,WENB1)
WRITE CLOCK (WCLKA,WCLKB)
PROGRAMMABLE
DATA IN DA
FULL FLAG (FFA,FFB)
0
DA
(PAFA,PAFB)
8
(DB
Used in a Single Device Configuration.
0
DB
8
)
Read Enable 2 (RENA2,RENB2)
RESET (RSA,RSB)
CY7C4801
CY7C4811
CY7C4821
CY7C4831
CY7C4841
CY7C4851
17
(WENA2/LDA,WENB2/LDB) pin is set LOW at Reset so that
the pin operates as a control to load and read the programma-
ble flag offsets.
READ CLOCK (RCLKA,RCLKB)
OUTPUT ENABLE (OEA,OEB)
DATA OUT QA
EMPTY FLAG (EFA,EFB)
READ ENABLE 1 (RENA1,RENB1)
PROGRAMMABLE(PAEA,PAEA)
CY7C4831/4841/4851
CY7C4801/4811/4821
0
QA
8
(QB
48X1–16
0
QB
8
)