AT89S51-24JU SL383 Atmel, AT89S51-24JU SL383 Datasheet - Page 24
AT89S51-24JU SL383
Manufacturer Part Number
AT89S51-24JU SL383
Description
Manufacturer
Atmel
Datasheet
1.AT89S51-24JU_SL383.pdf
(31 pages)
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25. External Program Memory Read Cycle
26. External Data Memory Read Cycle
24
AT89S51
PORT 0
PORT 2
PORT 0
PORT 2
PSEN
PSEN
ALE
ALE
RD
A0 - A7 FROM RI OR DPL
t
LHLL
t
AVLL
t
AVLL
t
P2.0 - P2.7 OR A8 - A15 FROM DPH
LHLL
t
AVWL
t
LLAX
t
A0 - A7
AVDV
t
LLAX
t
LLWL
t
t
LLPL
RLAZ
t
t
LLDV
AVIV
A8 - A15
t
PLAZ
t
RLRH
t
RLDV
DATA IN
t
t
LLIV
PLIV
INSTR IN
t
PXIX
t
PXIZ
t
t
t
A0 - A7 FROM PCL
RHDZ
t
PLPH
PXAV
t
RHDX
WHLH
A8 - A15 FROM PCH
A8 - A15
A0 - A7
INSTR IN
2487D–MICRO–6/08
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