mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 635

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

17.4.2.3
The global memory spaces reserved for the internal resources (RAM, EEPROM, and FLASH) are not
determined by the MMC module. Size of the individual internal resources are however fixed in the design
of the device cannot be changed by the user. Please refer to the Device User Guide for further details.
Figure 1-23
the memory spaces have fixed top addresses.
Freescale Semiconductor
Bit22
Bit22
1
2
3
RAMSIZE is the hexadecimal value of RAM SIZE in bytes
EEPROMSIZE is the hexadecimal value of EEPROM SIZE in bytes
FLASHSIZE is the hexadecimal value of FLASH SIZE in bytes
and
Internal Resource
Implemented Memory Map
Table 1-20
EEPROM
Registers
BDMGPR Register [6:0]
BDMGPR Register [6:0]
FLASH
RAM
show the memory spaces occupied by the on-chip resources. Please note that
Table 17-19. Global Implemented Memory Space
Figure 17-22. BDMGPR Address Mapping
MC9S12XDP512 Data Sheet, Rev. 2.17
$14_0000 minus EEPROMSIZE
$80_0000 minus FLASHSIZE
BDM HARDWARE COMMAND
$10_0000 minus RAMSIZE
BDM FIRMWARE COMMAND
Global Address [22:0]
Global Address [22:0]
Bit16
Bit16
Bottom Address
Bit15
Bit15
$00_0000
1
3
Chapter 17 Memory Mapping Control (S12XMMCV2)
BDM Local Address
2
CPU Local Address
Top Address
$0F_FFFF
$13_FFFF
$7F_FFFF
$00_07FF
Bit0
Bit0
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