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SM8951A Datasheet(PDF) 8 Page - SyncMOS Technologies,Inc

Part # SM8951A
Description  8-Bits Micro-controller With 4/8KB flash embedded
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Manufacturer  SYNCMOS [SyncMOS Technologies,Inc]
Direct Link  http://www.syncmos.com.tw
Logo SYNCMOS - SyncMOS Technologies,Inc

SM8951A Datasheet(HTML) 8 Page - SyncMOS Technologies,Inc

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SyncMOS Technologies International, Inc.
SM8951A/8952A
8-Bits Micro-controller
With 4/8KB flash embedded
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1
SM8951A/8952A 08/2006
8
fosc=16MHz
Variable fosc
Symbol
Parameter
Valid Cycle
Min. Typ. Max
Min.
Typ.
Max
Unit
Remarks
T LHLL
ALE pulse width
RD/WRT
115
2xT - 10
nS
T AVLL
Address Valid to ALE low
RD/WRT
43
T - 20
nS
T LLAX
Address Hold after ALE low
RD/WRT
53
T - 10
nS
T LLIV
ALE low to Valid Instruction In
RD
240
4xT-10
nS
T LLPL
ALE low to #PSEN low
RD
53
T - 10
nS
T PLPH
#PSEN pulse width
RD
173
3xT - 15
nS
T PLIV
#PSEN low to Valid Instruction In
RD
177
3xT-10
nS
T PXIX
Instruction Hold after #PSEN
RD
0
0
nS
T PXIZ
Instruction Float after #PSEN
RD
87
T+25
nS
T AVIV
Address to Valid Instruction In
RD
292
5xT-20
nS
T PLAZ
#PSEN low to Address Float
RD
10
10
nS
T RLRH
#RD pulse width
RD
365
6xT - 10
nS
T WLWH
#WR pulse width
WRT
365
6xT - 10
nS
T RLDV
#RD low to Valid Data In
RD
302
5xT-10
nS
T RHDX
Data Hold after #RD
RD
0
0
nS
T RHDZ
Data Float after #RD
RD
145
2xT+20
nS
T LLDV
ALE low to Valid Data In
RD
590
8xT-10
nS
T AVDV
Address to Valid Data In
RD
542
9xT-20
nS
T LLYL
ALE low to #WR High or #RD low
RD/WRT
178
197 3xT - 10
3xT+10
nS
T AVYL
Address Valid to #WR or #RD low
RD/WRT
230
4xT - 20
nS
T QVWH
Data Valid to #WR High
WRT
403
7xT - 35
nS
T QVWX
Data Valid to #WR transition
WRT
38
T - 25
nS
T WHQX
Data hold after #WR
WRT
73
T + 10
nS
T RLAZ
#RD low to Address Float
RD
5
nS
T YALH
#WR or #RD high to ALE high
RD/WRT
53
72
T -10
T+10
nS
T CHCL
clock fall time
nS
T CLCX
clock low time
nS
T CLCH
clock rise time
nS
T CHCX
clock high time
nS
T, TCLCL
clock period
63
1/fosc
nS


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