SM8951A View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
SM8951A Datasheet PDF : 16 Pages
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SyncMOS Technologies International, Inc.
SM8951A/8952A
8-Bits Micro-controller
With 4/8KB flash embedded
Symbol
Parameter
Valid Cycle fosc=16MHz
Variable fosc
Unit Remarks
Min. Typ. Max Min. Typ. Max
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
Specifications subject to change without notice contact your sales representatives for the most recent information.
8
Ver 2.1 SM8951A/8952A 08/2006
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