FlashFlex51 MCU
SST89E52RD2 / SST89E54RD2 / SST89E58RD2 / SST89E516RD2
SST89V52RD2 / SST89V54RD2 / SST89V58RD2 / SST89V516RD2
Preliminary Specifications
T
LHLL
ALE
T
PLPH
T
T
LLIV
AVLL
T
LLPL
T
PLIV
PSEN#
T
PXAV
T
PLAZ
T
PXIZ
PXIX
INSTR IN
T
LLAX
T
A0 - A7
PORT 0
PORT 2
A0 - A7
T
AVIV
A8 - A15
A8 - A15
1255 F35.0
FIGURE 14-3: EXTERNAL PROGRAM MEMORY READ CYCLE
T
LHLL
ALE
T
WHLH
PSEN#
T
LLDV
T
RLRH
T
LLWL
RD#
T
LLAX
T
T
RHDZ
RLDV
T
AVLL
T
RLAZ
T
RHDX
A0-A7 FROM PCL
A0-A7 FROM RI or DPL
DATA IN
INSTR IN
PORT 0
PORT 2
T
AVWL
T
AVDV
P2[7:0] or A8-A15 FROM DPH
A8-A15 FROM PCH
1255 F36.0
FIGURE 14-4: EXTERNAL DATA MEMORY READ CYCLE
©2004 Silicon Storage Technology, Inc.
S71255-00-000
3/04
77
SST [ SILICON STORAGE TECHNOLOGY, INC ]
