參數(shù)資料
型號(hào): LH543601M-25
廠商: Sharp Corporation
英文描述: 256 x 36 x 2 Bidirectional FIFO
中文描述: 256 × 36 × 2雙向先進(jìn)先出
文件頁數(shù): 39/43頁
文件大?。?/td> 360K
代理商: LH543601M-25
543601-8
t
RQS
t
ACK
t
AF
t
ACK
t
ACK
t
ACK
(CK )
(R/W )
(REQ )
(ACK )
(AF
2
)
A
CK
A
R/W
A
REQ
A
ACK
AF
1
RWS
t
*
*
*
*
*
Indicates where a write would take place, if ACK were tied to EN.
3. REQ must be maintained HIGH throughout the entire clock cycle for ACK to be generated.
4. When the REQ/ACK handshake is not used, ACK can be ignored,
and REQ may be tied HIGH or used as a second enable.
5. Parameters without parentheses apply to Port A. Parameters with parentheses apply to Port B.
NOTES:
1. For a FIFO access to occur, REQ and EN must be held HIGH for the required setup and hold times.
2. ACK can be tied directly to EN to directly gate FIFO accesses.
Starting at the third cycle after entering the
'almost-full' region, acknowledge
occurs on every third cycle to prevent overrun
of the full condition.
Outside the 'almost-full' region,
acknowledge is continuous
for a continuous request.
1
2
Figure 30. Write Request/Acknowledge Handshake
TIMING DIAGRAMS (cont’d)
256
×
36
×
2 Bidirectional FIFO
LH543601
39
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LH543601M-30 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:256 x 36 x 2 Bidirectional FIFO
LH543601M-35 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:256 x 36 x 2 Bidirectional FIFO
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LH543601P-25 制造商:Sharp Microelectronics Corporation 功能描述: 制造商:Sharp Microelectronics Corporation 功能描述:512 X 36 BI-DIRECTIONAL FIFO, PQFP132
LH543601P-30 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:256 x 36 x 2 Bidirectional FIFO