CXD1807Q 查看數據表（PDF） - Sony Semiconductor
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CXD1807Q Datasheet PDF : 18 Pages
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CXD1807Q
(Tw = 1/f, f: master clock frequency)
Item
Symbol Min.
Typ.
RAS pulse width
Tras
3Tw –10
RAS precharge width
Trp
2Tw
RAS – CAS delay time
Trcd
2Tw
CAS pulse width
Tcas
Tw
Page mode cycle time
Tpc
2Tw
Row address setup time (for RAS, ↓)
Tasr
2Tw –45
Row address hold time (for RAS, ↓)
Trah
Tw –15
Column address setup time (for CAS, ↓) Tasc
Tw –35
Column address hold time (for CAS, ↓) Tcah
Tw
Data input delay time (for CAS, ↓)
Tddc
Data float time (relative to CAS, ↑)
Tdhc
10
Data output setup time (for CAS, ↓)
Tds
Tw –50
Data output hold time (for CAS, ↓)
Tdh
Tw –15
Data output delay time (for OE, ↑)
Todd
Tw
Max. Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Tw –10 ns
ns
ns
ns
ns
(3) Read modify write
RAS1
CAS1
Trcd
Trah
Tras
Trwc
Tcas
Tcah
A10 to A17
D10 to D13
WE1
row
column
row
Tdhi
Tdh
Tasr
Tasc
in
out
Twp
Tdsi
Tds
OE1
Tcwd
Tcod
Toeh
–9–
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