SM8051 Datasheet, PDF (9/16 Pages) SyncMOS Technologies,Inc – 8 - Bit Micro-controller with 4/8KB ROM embedded

SyncMOS Technologies Inc.
May 2001
SM8051/80952
Application Reference
Valid for SM8051/8052
X'tal 3MHz 6MHz
C1 30 pF 30 pF
C2 30 pF 30 pF
R
open open
9MHz
30 pF
30 pF
open
12MHz
30 pF
30 pF
open
X'tal 16MHz 25MHz 33MHz 40MHz
C1 30 pF 15 pF 10 pF 5 pF
C1
C2 30 pF 15 pF 10 pF 5 pF
R
open 62KΩ 6.8KΩ 4.7KΩ
X'tal
R
C2
XI
SM8051/8052
X2
NOTE: Oscillation circuit may differs with different crystal or ceramic
resonator in higher oscillation frequency which was due to each
crystal or ceramic resonator has its own characteristics.
User should check with the crystal or ceramic resonator manufacturer
for appropriate value of external components.
Data Memory Read Cycle Timing
T12
T1 T2
T3 T4
T5
T6
T7
OSC
ALE
1
2
T8 T9
T10 T11 T12 T1
T2 T3
#PSEN
#RD
PORT2
PORT0
3
INST in Float
3
A7 - A0
4
Float
5
ADDRESS A15 - A8
6
DATA in
7
8
Float
ADDRESS
or Float
Specifications subject to change without notice,contact your sales representatives for the most recent information.
9/16
Ver 1.1
SM8051/8052 07/2005