mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1279

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

A.8
The following conditions are assumed for all following external bus timing values:
A.8.1
Freescale Semiconductor
UDS, LDS
•
•
•
ADDRx
EWAIT
DATAx
Crystal input within 45% to 55% duty
Equal loads of pins
Pad full drive (reduced drive must be off)
CSx
WE
RE
External Bus Timing
Normal Expanded Mode (External Wait Feature Disabled)
Figure A-11. Example 1a: Normal Expanded Mode — Read Followed by Write
2
ADDR1
8
1
3
MC9S12XDP512 Data Sheet, Rev. 2.17
(Read) DATA1
6
4
7
9
(Write) DATA2
ADDR2
10
1
5
Appendix A Electrical Characteristics
11
1279