Datasheet

Appendix A Electrical Characteristics
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 1247
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