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參數(shù)資料
| 型號(hào)： | CY7C4425-25ASC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| 中文描述： | 64 X 18 OTHER FIFO, 15 ns, PQFP64 |
| 封裝： | 10 X 10 MM, TQFP-64 |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 409K |
| 代理商： | CY7C4425-25ASC |
CY7C4425/4205/4215
CY7C4225/4235/4245
10
Notes:
19. PAE offset – n. Number of data words into FIFO already = n.
20. PAE offset – n.
21. t
is the minimum time between a rising WCLK and a rising RCLK edge for PAE to change state during that clock cycle. If the time between the edge of WCLK and the
rising RCLK is less than t
, then PAE may not change state until the next RCLK.
22. If a read is performed on this rising edge of the read clock, there will be Empty + (n – 1) words in the FIFO when PAE goes LOW.
Switching Waveforms
(continued)
t
ENH
Programmable Almost Empty Flag Timing
WCLK
PAE
]
REN
RCLK
t
CLKH
t
PAE
t
ENS
n+1
WORDS
IN FIFO
t
CLKL
t
ENS
t
PAE
n WORDS IN FIFO
42X5–13
[19]
WEN
Note
20
t
ENH
WCLK
PAE
RCLK
t
CLKH
t
ENS
t
CLKL
t
ENS
t
PAEsynch
N + 1 WORDS
INFIFO
42X5–14
t
ENH
t
ENS
t
ENH
t
ENS
t
PAEsynch
REN
WEN
WEN2
t
SKEW3
Note
22
Programmable Almost Empty Flag Timing (applies only in SMODE (SMODE is LOW)
[21]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY7C4205-25ASC | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4215-25ASC | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4235-25ASC | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4245-25ASC | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4425-25ASI | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C4425V15ASC | 制造商:Cypress Semiconductor 功能描述: |
| CY7C443-12JC | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Width Uni-Dir 2K x 9 32-Pin PLCC |
| CY7C443-14DC | 制造商:Cypress Semiconductor 功能描述:FIFO, 2K x 9, Synchronous, 28 Pin, Ceramic, DIP |
| CY7C443-14JC | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Width Uni-Dir 2K x 9 32-Pin PLCC |
| CY7C443-14JCT | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Width Uni-Dir 2K x 9 32-Pin PLCC T/R |
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