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t
RC
(m)
Strobe
Setup Hold
EM_CS
EM_A[21:0]
EM_BA[1:0]
EM_OE
EM_D[15:0]
t
ACC
(m)
t
SU
t
H
t
COD
(m)
t
OH
(m)
Use Cases
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Figure 12. Timing Waveform of an ASRAM Read
For a write access, Table 18 lists the AC timing specifications that must be satisfied.
Table 18. ASRAM Input Timing Requirements for a Write
Parameter Description
t
WP
Write Pulse width
t
AW
Address valid to end of Write
t
DS
Data Setup time
t
WR
Write Recovery time
t
DH
Data Hold time
t
WC
Write Cycle time
32
Asynchronous External Memory Interface (EMIF) SPRUEQ7C–February 2010
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