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參數(shù)資料
| 型號： | CY7C4215V-35ASC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | SERIAL DTE CABLE WITH DB9 FEMALE CONNECTOR |
| 中文描述： | 512 X 18 OTHER FIFO, 20 ns, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, STQFP-64 |
| 文件頁數(shù)： | 11/25頁 |
| 文件大小： | 409K |
| 代理商： | CY7C4215V-35ASC |
CY7C4425/4205/4215
CY7C4225/4235/4245
11
Notes:
23. PAF offset = m. Number of data words written into FIFO already = 64 – m + 1 for the CY7C4425, 256 – m + 1 for the CY7C4205, 512 – m + 1 for the
CY7C4215. 1024 – m + 1 for the CY7C4225, 2048 – m + 1 for the CY7C4235, and 4096 – m + 1 for the CY7C4245.
24. PAF is offset = m.
25. 64 – m words in CY7C4425, 256 – m words inCY7C4205, 512 – m word in CY7C4215. 1024 – m words in CY7C4225, 2048 – m words in CY7C4235, and
4096 – m words in CY7C4245.
26. 64 – m + 1 words in CY7C4425, 256 – m + 1 words in CY7C4205, 512 – m +1 words in CY7C4215, 1024 – m + 1 CY7C4225, 2048 – m + 1 in CY74235,
and 4096 – m + 1 words in CY7C4245.
27. If a write is performed on this rising edge of the write clock, there will be Full – (m – 1) words of the FIFO when PAF goes LOW.
28. PAF offset = m.
29. 64 – m words in CY7C4425, 256 – m words in FIFO for CY7C4205, 512 – m word in CY7C4215. 1024 – m words in CY7C4225, 2048 – m words in CY7C4235,
and 4096 – m words in CY7C4245.
30. t
is the minimum time between a rising RCLK and a rising WCLK edge for PAF to change state during that clock cycle. If the time between the edge of RCLK and the
rising edge of WCLK is less than t
SKEW3
, then PAF may not change state until the next WCLK rising edge.
Switching Waveforms
(continued)
Note
t
ENH
WEN
WCLK
REN
RCLK
t
CLKH
t
PAF
t
ENS
t
CLKL
t
ENS
t
PAF
42X5–15
FULL
M WORDS
IN FIFO
FULL
M + 1 WORDS
IN FIFO
Programmable Almost Full Flag Timing
[26]
PAF
[24]
23
[25]
Note
27
Note
28
t
ENH
WCLK
PAF
RCLK
t
CLKH
t
ENS
FULL
M WORDS
IN FIFO
t
CLKL
t
ENS
FULL-
M+1
ORDS
INFIFO
42X5–16
t
ENH
t
ENS
t
ENH
t
ENS
t
PAF
REN
WEN2
t
SKEW3
t
PAFsynch
[30]
WEN
Programmable Almost Full Flag Timing (applies only in SMODE (SMODE in LOW))
[29]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY7C4205-10AC | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4205-10AI | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4205-10ASC | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4205-10ASI | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| CY7C4205-10JC | 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 |
|---|---|
| CY7C421-65AC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CY7C421-65JC | 制造商:Cypress Semiconductor 功能描述:512 X 9 OTHER FIFO, 65 ns, PQCC32 |
| CY7C421-65JI | 制造商:Cypress Semiconductor 功能描述:FIFO, 512 x 9, Asynchronous, 32 Pin, Plastic, PLCC |
| CY7C421-65PC | 制造商:Cypress Semiconductor 功能描述:FIFO, 512 x 9, Asynchronous, 28 Pin, Plastic, DIP |
| CY7C42165VC | 制造商:CYPRESS 功能描述:* |
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