S912XEG384J3VA Datasheet, PDF (196/1324 Pages) Freescale Semiconductor, Inc – MC9S12XEP100 Reference Manual Covers MC9S12XE Family

Chapter 3 Memory Mapping Control (S12XMMCV4)
RESET
010
Special
Test
(ST)
010
100
101
Normal
100
RESET
Single-Chip
101
110
(NS)
111
100
Normal
Expanded
(NX)
101
101
RESET
001
RESET
Emulation
Single-Chip
(ES)
001
101
001
011
Special
Single-Chip
(SS)
000
000
RESET
Emulation
Expanded
(EX)
011
011
RESET
Transition done by external pins (MODC, MODB, MODA)
RESET
Transition done by write access to the MODE register
110
Illegal (MODC, MODB, MODA) pin values.
111
Do not use. (Reserved for future use).
Figure 3-5. Mode Transition Diagram when MCU is Unsecured
MC9S12XE-Family Reference Manual Rev. 1.25
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Freescale Semiconductor