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參數(shù)資料
| 型號(hào)： | CY7C454 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 4Kx9 Cascadable Clocked FIFOs with Programmable Flags(帶可編程標(biāo)記的4Kx9可級(jí)聯(lián)定時(shí)的先進(jìn)先出) |
| 中文描述： | 4Kx9級(jí)聯(lián)與時(shí)鐘FIFO的可編程標(biāo)志（帶可編程標(biāo)記的4Kx9可級(jí)聯(lián)定時(shí)的先進(jìn)先出） |
| 文件頁(yè)數(shù)： | 13/23頁(yè) |
| 文件大小： | 437K |
| 代理商： | CY7C454 |
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CY7C451
CY7C453
CY7C454
13
PRELIMINARY
Note:
36. W2 is ignored because the FIFO is full (count = 4096[2048,512]). It is important to note that W3 is also ignored because R3, the first enabled read after full,
occurs less than t
before W3. Therefore, the FIFO still appears full when W3 occurs. Because R3 occurs greater than t
SKEW2
before W4, W4
includes R3 in the flag update.
Switching Waveforms
(continued)
Write to Almost Full Timing Diagram with Write Flag Update Cycle and Free-Running Clocks
COUNT
2031
2032
2030
2032
t
SKEW1
t
SKEW2
t
FD
t
FD
t
FD
EWRITE
WRITE
EWRITE
EWRITE
2031
2031
2033
C451-19
EWRITE
ER2
ERR3
FLAG UPDATE CYCLE
CKW
CKR
ENW
ENR
PAFE
HF
E/F
Write to Full Flag Timing Diagram with Free-Running Clocks
t
SKEW1
t
SKEW2
t
FD
t
FD
t
FD
COUNT
2047
2048
2047
2048
EW1
EW5
EREAD
CKW
ENW
CKR
ENR
PAFE
E/F
HF
WRITE
IW6
C451-20
IWW2
IW3
t
SKEW2
LATENT CYCLE
HIGH
LOW
LOW
LOW
W1
W2
W3
W4
W5
W6
W7
R2
R3
R6
R5
R4
R1
R1
R4
R5
R6
R7
W4
2030 (no change)
[21,26,29]
[21,22,29,36]
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| CY7C466A | Asynchronous, Cascadable 64K x9 FIFOs(異步，可級(jí)聯(lián)的 64K x9 先進(jìn)先出) |
| CY7C460A | Asynchronous, Cascadable 8K/16K/32K/64K x9 FIFOs |
| CY7C460A-10JC | Asynchronous, Cascadable 8K/16K/32K/64K x9 FIFOs |
| CY7C460A-10JI | Asynchronous, Cascadable 8K/16K/32K/64K x9 FIFOs |
| CY7C460A-10PC | Asynchronous, Cascadable 8K/16K/32K/64K x9 FIFOs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C454-14LMB | 制造商:Cypress Semiconductor 功能描述:512X9, 2KX9, AND 4KX9 CASCADABLE CLOCKED FIFOS WITH PROGRAMMABLE |
| CY7C455-14JC | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Depth/Width Uni-Dir 512 x 18 52-Pin PLCC |
| CY7C455-14JI | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CY7C457 WAF | 制造商:Cypress Semiconductor 功能描述: |
| CY7C457-14JC | 制造商:Cypress Semiconductor 功能描述: |
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