SyncMOS Technologies International, Inc.
SM5964
8-Bits Micro-controller
64KB ISP flash & 1KB RAM embedded
AC Characteristics
(16/25/40MHz, operating conditions; CL for Port 0, ALE and PSEN Outputs=150pF; CL for all Other Output=80pF)
fosc=16MHz
Min. Typ. Max
Variable fosc
Typ.
Symbol
Parameter
Valid Cycle
Unit
Remarks
Min.
Max
T LHLL
T AVLL
T LLAX
T LLIV
T LLPL
T PLPH
T PLIV
T PXIX
T PXIZ
T AVIV
T PLAZ
T RLRH
ALE pulse width
RD/WRT
RD/WRT
RD/WRT
RD
RD
RD
115
43
53
2xT - 10
T - 20
T - 10
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
Address Valid to ALE low
Address Hold after ALE low
ALE low to Valid Instruction In
#PSEN pulse width
240
4xT-10
3xT-10
53
T - 10
3xT - 15
173
177
0
#PSEN low to Valid Instruction In RD
Instruction Hold after #PSEN
Instruction Float after #PSEN
Address to Valid Instruction In
#PSEN low to Address Float
#RD pulse width
RD
RD
RD
RD
RD
WRT
RD
RD
RD
RD
RD
0
87
292
10
T + 25
5xT -20
10
365
365
302
0
6xT - 10
6xT - 10
T WLWH #WR pulse width
T RLDV
T RHDX
T RHDZ
T LLDV
T AVDV
T LLYL
T AVYL
#RD low to Valid Data In
Data Hold after #RD
5xT - 10 nS
nS
0
Data Float after #RD
ALE low to Valid Data In
Address to Valid Data In
ALE low to #WR High or #RD low RD/WRT
Address Valid to #WR or #RD low RD/WRT
145
590
542
2xT+20
nS
8xT - 10 nS
9xT - 20 nS
178
230
403
38
197 3xT-10
4xT-20
3xT+10
nS
nS
nS
nS
nS
nS
nS
nS
nS
T QVWH Data Valid to #WR High
T QVWX Data Valid to #WR transition
T WHQX Data hold after #WR
T RLAZ
T YALH
T CHCL
T CLCX
WRT
WRT
WRT
RD
7xT-35
T - 25
T + 10
73
#RD low to Address Float
#WR or #RD high to ALE high
clock fall time
5
RD/WRT
53
72
T -10
T + 10
clock low time
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.2 SM5964 08/2006
17
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
