MSU2051 Datasheet, PDF (13/21 Pages) Mosel Vitelic, Corp – low working voltage 16 MHz ROM less MCU

MOSEL VITELIC
Tm.III External Data Memory Write Cycle
#PSEN
ALE
#WR
PORT 0
PORT 2
T LHLL
T LLYL
T WLWH
T AVLL
T LLAX
A0-A7
from Ri or
DPL
T AVYL
T QVWX
T QVWH
DATA OUT
P2.0-P2.7 or A8-A15 from DPH
T YHLH
T WHQX
MSU2051/U2031
A0-A7
From
PCL
INSTR.
IN
A8-A15 from PCH
Application Reference
Valid for U2051L16/ U2031L16/
U2051S16/ U2031S16
X'tal 3 MHz 6 MHz 12 MHz 16 MHz
C1
15 pF 15 pF 30 pF 30 pF
C2
15 pF 15 pF 30 pF 30 pF
R
open
open open open
Valid for U2051C16/ U2031C16/
U2051C25/ U2031C25/
U2051C40/ U2031C40
X'tal 12 MHz 16 MHz 25 MHz 40 MHz _C1
C1
30 pF 30 pF 15 pF
5 pF
C2
30 pF 30 pF 15 pF
5 pF
R
open open 62 Kohm 4.7 Kohm
X'tal
R
C2
X1
MSU2051/U2031
X2
Rev. 1.0 February 1998
13