mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 557

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

selected. In addition, the active-low emulation chip select signal, ECS, will likewise function based upon
the assigned memory allocation. In the cases of 48K byte and 64K byte allocated physical FLASH/ROM
space, the operation of the ECS signal will additionally depend upon the state of the ROMHM bit (see
Section 19.3.2.4, “Miscellaneous System Control Register
Table
allocated memory configuration. Again, this signal information is only available externally when the EMK
bit is set and the system is in an expanded mode.
Freescale Semiconductor
19-19,
Table
0xC000–0xFFFF
0xC000–0xFFFF
0xC000–0xFFFF
0xC000–0xFFFF
0x8000–0xBFFF
0x8000–0xBFFF
0x8000–0xBFFF
0x8000–0xBFFF
Address Space
0x0000–0x3FFF
0x4000–0x7FFF
Address Space
0x0000–0x3FFF
0x4000–0x7FFF
Address Space
0x0000–0x3FFF
0x4000–0x7FFF
Address Space
0x0000–0x3FFF
0x4000–0x7FFF
19-20, and
Table 19-19. 16K Byte Physical FLASH/ROM Allocated
Table 19-20. 48K Byte Physical FLASH/ROM Allocated
Table 19-21. 64K Byte Physical FLASH/ROM Allocated
Table 19-18. 0K Byte Physical FLASH/ROM Allocated
Table 19-21
MC9S12E256 Data Sheet, Rev. 1.08
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summarize the functionality of these signals based upon the
External
External
Internal
Internal
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
(MISC)”) in the MISC register.
ROMHM
ROMHM
ROMHM
ROMHM
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0
1
0
1
0
1
Chapter 19 Module Mapping Control (MMCV4)
ECS
ECS
ECS
ECS
1
1
0
0
1
1
1
0
1
0
1
1
0
0
0
1
0
1
1
0
0
XAB19:14
XAB19:14
XAB19:14
XAB19:14
PIX[5:0]
PIX[5:0]
PIX[5:0]
PIX[5:0]
0x3D
0x3D
0x3D
0x3D
0x3E
0x3F
0x3E
0x3F
0x3E
0x3F
0x3E
0x3F
Table
19-18,
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