MO SEL VITELIC
MSU2051/U2031
Tm.III External Data Memory Write Cycle
#PSEN
T YHLH
ALE
T LHLL
T LLYL
T WLWH
#WR
PORT 0
PORT 2
T QVWX
T AVLL
T WHQX
T LLAX
T QVWH
A0-A7
From
PCL
A0-A7
from Ri or
DPL
INSTR.
IN
DATA OUT
T AVYL
P2.0-P2.7 or A8-A15 from DPH
A8-A15 from PCH
Application Reference
Valid for U2051L16/ U2031L16/
U2051S16/ U2031S16
X'tal
C1
C2
R
3 MHz
15 pF
15 pF
open
6 MHz 12 MHz 16 MHz
X1
15 pF
15 pF
open
30 pF
30 pF
open
30 pF
30 pF
open
MSU2051/U2031
X'tal
R
Valid for U2051C16/ U2031C16/
U2051C25/ U2031C25/
U2051C40/ U2031C40
X2
X'tal
C1
C2
R
12 MHz 16 MHz 25 MHz
40 MHz
5 pF
C1
C2
30 pF
30 pF
open
30 pF
30 pF
15 pF
15 pF
5 pF
open 62 Kohm 4.7 Kohm
Rev. 1.0 February 1998
13
MOSEL [ MOSEL VITELIC, CORP ]
