Appendix A Electrical Characteristics
MC9S12XDP512 Data Sheet, Rev. 2.11
954 Freescale Semiconductor
A.8 External Bus Timing
The following conditions are assumed for all following external bus timing values:
• Crystal input within 45% to 55% duty
• Equal loads of pins
• Pad full drive (reduced drive must be off)
A.8.1 Normal Expanded Mode (External Wait Feature Disabled)
Figure A-10. 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