SyncMOS Technologies International, Inc.
SM89516
8-Bits Micro-controller
With 64KB flash & 1KB RAM embedded
AC Characteristics
(16/25MHz, operating conditions; CL for Port 0, ALE and PSEN Outputs=100pF; CL for all Other Output=80pF)
fosc=16MHz
Min. Typ. Max
Variable fosc
Typ. Max
Symbol
Parameter
Valid Cycle
Unit
Remarks
Min.
T LHLL
T AVLL
T LLIV
T LLPL
T PLPH
T PLIV
T PXIX
T PXIZ
T AVIV
T PLAZ
T RLRH
T WLWH
T RLDV
T RHDZ
T LLDV
T AVDV
T LLYL
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
RD/WRT
RD/WRT
RD/WRT
RD
115
43
53
2xT - 10
T - 20
T - 10
nS
nS
nS
240
4xT - 10 nS
RD
RD
RD
RD
RD
RD
RD
RD
WRT
RD
RD
RD
RD
53
T - 10
3xT - 15
nS
173
177
0
nS
3xT - 10 nS
nS
0
87
292
10
T + 25
5xT -20
10
nS
nS
nS
nS
nS
365
365
302
0
6xT - 10
6xT - 10
#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
5xT - 10 nS
nS
0
145
590
542
2xT+20
nS
8xT - 10 nS
9xT - 20 nS
RD
ALE low to #WR High or #RD low
RD/WRT 178
230
403
38
197 3xT - 10
4xT - 20
7xT - 35
T - 25
3xT+10
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
T AVYL Address Valid to #WR or #RD low RD/WRT
T QVWH
T QVWX
T RLAZ
T YALH
T CHCL
T CLCH
T CHCX
T, TCLCL
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
WRT
WRT
WRT
RD
RD/WRT
73
T + 10
5
53
72
T -10
T + 10
clock low time
clock rise time
clock high time
clock period
63
1/fosc
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89516 08/2006
11
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
