USER'S GUIDE

EXPANDED DATA MEMORY READ Figure 15±5

MACHINE CYCLE

MACHINE CYCLE

ALE

PSEN

 

 

 

 

RD

 

 

 

 

 

 

DATA

 

DATA

 

DATA

SAMPLED

 

SAMPLED

 

 

 

 

 

SAMPLED

 

 

 

PORT 0

PCL

DPL OR

 

PCL

OUT

RI, OUT

 

OUT

 

 

PORT 2

PCH/P2

PCH/P2

DPH OR P2 OUT

PCH/P2

*PCL OUT if program memory also on Expanded Bus ± float if not. **PCH OUT if program memory also on Expanded Bus.

EXPANDED DATA MEMORY WRITE Figure 15±6

 

 

MACHINE CYCLE

 

MACHINE CYCLE

ALE

 

 

 

 

PSEN

 

 

 

 

WR

 

 

 

 

 

 

 

DATA

 

 

 

DATA

SAMPLED

 

 

 

 

 

 

 

SAMPLED

 

 

 

 

(1)

DPL OR

 

PORT 0

 

PCL

DATA OUT

 

OUT

RI, OUT

 

 

 

 

(2)

(2)

 

 

PORT2

PCH/P2

PCH/P2

 

DPH OR P2 OUT

(1)PCL OUT if program memory also on Expanded Bus ± float if not.

(2)PCH OUT if program memory also on Expanded Bus.

 

(1)

PC

PCL OUT

OUT

 

(2)

PCH/P2

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Mitsubishi DS907x SIP, DS5000TK manual Expanded Data Memory Read ±5, Expanded Data Memory Write ±6, 128