FlashFlex MCU
SST89E516RD2 / SST89E516RD
SST89V516RD2 / SST89V516RD
Data Sheet
TLHLL
ALE
TWHLH
PSEN#
TLLWL
TWLWH
WR#
TAVLL
TLLAX
TQVWX
TQVWH
TWHQX
PORT 0
A0-A7 FROM RI or DPL
TAVWL
DATA OUT
A0-A7 FROM PCL
INSTR IN
PORT 2
P2[7:0] or A8-A15 FROM DPH
A8-A15 FROM PCH
1273 F34.0
FIGURE
14-5: External Data Memory Write Cycle
TABLE 14-9: External Clock Drive
Oscillator
12MHz
Symbol
1/T
CLCL
T
CLCL
T
CHCX
T
CLCX
T
CLCH
T
CHCL
Parameter
Oscillator Frequency
High Time
Low Time
Rise Time
Fall Time
Min
83
Max
40MHz
Min
25
8.75
8.75
20
20
10
10
Max
Min
0
0.35T
CLCL
0.35T
CLCL
Variable
Max
40
0.65T
CLCL
0.65T
CLCL
Units
MHz
ns
ns
ns
ns
ns
T14-9.0 1273
VDD - 0.5
0.7VDD
0.2 VDD - 0.1
TCHCL
TCLCX
TCHCX
TCLCH
TCLCL
1273 F35.0
0.45 V
FIGURE
14-6: External Clock Drive Waveform
©2007 Silicon Storage Technology, Inc.
S71273-03-000
1/07
73
SST [ SILICON STORAGE TECHNOLOGY, INC ]
