PXR40RM Datasheet, PDF (1314/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

External Bus Interface (EBI)
D_CLKOUT
CS[n]
D_TS
D_ADD[9:30]
D_OE
D_WE[0:1]
D_ADD_DAT[0:31]
D_TA
3 wait states
D_ADD_DAT is valid
Figure 30-40. Read Operation to Asynchronous Memory, Three Initial Wait States
D_CLKOUT
CS[n]
D_TS
D_ADD[9:30]
D_WE[0:1]
D_OE
D_ADD_DAT[0:31]
D_ADD_DAT is valid
D_TA
3 wait states
Figure 30-41. Write Operation to Asynchronous Memory, Three Initial Wait States
30.5.4 Connecting an MCU to Multiple Memories
The MCU can be connected to more than one memory at a time.
Figure 30-42 shows an example of how two memories could be connected to one MCU.
30-52
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor