Oki MSM85C154HVS User Manual

SYSTEM CONFIGURATION
25
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M2
S1
PCL
OUT
INST IN
PCH OUT PCH OUT PORT 2 LATCH DATA OUT
XTAL1
1
0
ALE
1
0
PSEN
1
0
PORT–0
1
0
PORT–2
1
0
PCH OUT
Rr
OUT
ACC DATA OUT
PCL
OUT
INST IN
WR
1
0
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M2
S1
PCL
OUT
INST IN
PCH OUT PCH OUT DPH OUT
XTAL1
1
0
ALE
1
0
PSEN
1
0
PORT–0
1
0
PORT–2
1
0
PCH OUT
DPL
OUT
RAM DATA IN
EXT RAM
DATA
PCL
OUT
INST IN
RD
1
0
Figure 2-12 MSM80C154S MOVX @Rr, A execution
Figure 2-13 MSM80C154S MOVX A, @DPTR execution
(3) MOVX @Rr, A
(4) MOVX A, @DPTR

Oki MSM85C154HVS Specifications

General

Category	Controller
Manufacturer	Oki
Model	MSM85C154HVS
CPU Type	8-bit
Core	80C51
Data Bus Width	8-bit
Program Memory Size	8KB
RAM Size	256 Bytes
Number of I/O Lines	32
Clock Speed	12 MHz