Appendix A Electrical Characteristics
MC9S12XE-Family Reference Manual , Rev. 1.19
1246
Freescale Semiconductor
A.7.3
External Bus Timing
The following conditions are assumed for all following external bus timing values:
•
Crystal input within 45% to 55% duty
•
Equal 25 pF load on all pins
•
Pad full drive (reduced drive must be off)
A.7.3.1
Normal Expanded Mode (External Wait Feature Disabled)
Figure A-12. Example 1a: Normal Expanded Mode — Read Followed by Write
CSx
ADDRx
RE
DATAx
ADDR1
ADDR2
(Read) DATA1
(Write) DATA2
WE
EWAIT
UDS, LDS
1
3
5
6
7
1
9
8
10
11
2
4
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages