User's Manual

MSM80C154S/83C154S/85C154HVS
28
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M2
S1
PORT 0 LATCH DATA
XTAL1
1
0
ALE
1
0
PSEN
1
0
PORT–0
1
0
PORT–2
1
0
DPL
OUT
EXT RAM
DATA
FLOATING
RD
1
0
RAM DATA IN
PORT 2 LATCH DATA OUT DPH OUT
PORT 2 LATCH
DATA OUT
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M2
PORT 2 LATCH DATA OUT DPH OUT
PORT 2 LATCH
DATA OUT
S1
PORT 0 LATCH DATA
XTAL1
1
0
ALE
1
0
PSEN
1
0
PORT–0
1
0
PORT–2
1
0
DPL
OUT
ACC DATA OUT
FLOATING
WR
1
0
Figure 2-18 MSM83C154S MOVX A, @DPTR execution
Figure 2-19 MSM83C154S MOVX @DPTR, A execution
(3) MOVX A, @DPTR
(4) MOVX @DPTR, A