SM8958A Datasheet, PDF (17/25 Pages) SyncMOS Technologies,Inc – 8 - Bit Micro-controller with 32KB flash & 1KB RAM embedded

SyncMOS Technologies Inc.
September 2002
SM8958A
Application Reference
Valid for SM8958A
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
XI
X'tal
SM8958A
X'tal 16MHz 25MHz 33MHz 40MHz
R
X2
C1 30 pF
15 pF 5 pF
2 pF
C1
C2
C2 30 pF 15 pF 5 pF
2 pF
R
open
62KΩ 6.8KΩ 4.7KΩ
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.
17/25
Ver 1.0 PID 8958A 09/02