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