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ACU7503PRODUCT DATASHEET
Copyright © Actions Semiconductor Co., Ltd. 2006. All rights reserved.
Ver 1.3
Page 21
2007-1-22
4.4.7 External System Bus Parameter
Parameter
Symbol Condition
MIN. MAX. Unit
tXAS
Memory Read 25
ns
Address setup time (to command signal)Note 1, 2
tXAS
Memory Write 10
ns
Address hold time (from command signal)Note 1, 2
tXAH
5
ns
Data output setup time (to command signal)Note 1
tWXDS
20
ns
Data output hold time(from command signal)Note 1
tWXDH
10
ns
Data input setup time (to command signal)Note 1
tRXDS
20
ns
Data input hold time (from command signal)Note 1
tRXDH
10
ns
Notes:
1. MRD# and MWR# are called the command signals for the External System Bus Interface.
2. T (ns) = 1/ fMCUCLK
4.4.8 Bus Operation
Memory Read Timing
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