User's Manual

MSM80C154S/83C154S/85C154HVS
40
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M2
S1 S2 S3 S4 S5 S6
M1
PCL PCL PCL PCL PCL PCLACC DATARr
INSTRUCTION IN
PCH PCH PCH PCH PORT 2 LATCH DATA PCH PCH PCH
XTAL1
1 0
ALE
1 0
PSEN
1 0
WR
1 0
PORT–0
1 0
PORT–2
1 0
S6
PCL
MOVX @Rr, A
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M1
S1 S2 S3 S4 S5 S6
M2
S1 S2 S3 S4 S5 S6
M1
PCL PCL PCL PCL PCL PCLRr
INSTRUCTION IN
PCH PCH PCH PCH PORT 2 LATCH DATA PCH PCH PCH
XTAL1
1 0
ALE
1 0
PSEN
1 0
RD
1 0
PORT–0
1 0
PORT–2
1 0
S6
PCL
MOVX A, @Rr
RAM DATA IN
Figure 2-29 Register R0/R1 external data memory access timing