SST89C54-33-I-NI View Datasheet(PDF) - Silicon Storage Technology
Part Name
Description
View to exact match
SST89C54-33-I-NI Datasheet PDF : 50 Pages
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FlashFlex51 MCU
SST89C54 / SST89C58
Preliminary Specifications
ALE
PSEN#
RD#
PORT 0
PORT 2
TLHLL
TAVLL
TLLDV
TLLWL
TLLAX
TRLAZ
TRLRH
TRLDV
A7-A0 FROM RI or DPL
DATA IN
TAVWL
TAVDV
P2[7:0] or A15-A8 FROM DPH
FIGURE 28: EXTERNAL DATA MEMORY READ CYCLE
TWHLH
TRHDZ
TRHDX
A7-A0 FROM PCL
INSTR IN
A15-A8 FROM PCH
344 ILL F14.3
ALE
PSEN#
WR#
PORT 0
PORT 2
TLHLL
TLLWL
TWLWH
TAVLL
TLLAX
TQVWX
A7-A0 FROM RI or DPL
TAVWL
TQVWH
DATA OUT
P2[7:0] or A15-A8 FROM DPH
FIGURE 29: EXTERNAL DATA MEMORY WRITE CYCLE
TWHLH
TWHQX
A7-A0 FROM PCL
INSTR IN
A15-A8 FROM PCH
344 ILL F15.3
TABLE 15: EXTERNAL CLOCK DRIVE
Symbol
Parameter
1/TCLCL
TCHCX
TCLCX
TCLCH
TCHCL
Oscillator Frequency
High Time
Low Time
Rise Time
Fall Time
© 2000 Silicon Storage Technology, Inc.
12MHz
Min Max
20
20
Oscillator
33MHz
Min Max
Variable
Min.
Max.
0
33
0.35TCLCL
0.65TCLCL
0.35TCLCL
0.65TCLCL
5
5
Units
MHz
ns
ns
ns
ns
344 PGM T15.2
344-2 8/00
44
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