Maxim Integrated High-Speed Microcontroller - Manual (Page 86)

High-Speed Microcontroller User’s Guide
Rev: 062210 86 of 176
Figure 6-5. Three-Cycle MOVX Instruction
AD0-AD7
ALE
PORT 2
CLK
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
Last Cycle
of
Previous
Instruction
A0-A7 D0-D7 A0-A7 D0-D7 A0-A7 D0-D7 A0-A7 D0-D7
MOVX
Instruction
Address
MOVX
Instruction
MOVX
Data
A8-A15 A8-A15 A8-A15
THREE CYCLE DATA MEMORY WRITE (RESET DEFAULT)
STRETCH VALUE=1
C1 C2 C3 C4
MOVX Instruction
First
Machine
Cycle
Second
Machine
Cycle
Third
Machine
Cycle
Next
Instruction
Machine
Cycle
Next
Instruction
Read
MOVX
Data
Address
A8-A15
Next
Instruction
Address
PSEN
WR