Freescale Semiconductor HCS12X, Reference Manual

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Chapter 1 Device Overview MC9S12XE-Family
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor 37
Figure 1-3 shows XGATE local address translation to the global memory map. It indicates also the location
of used internal resources in the memory map.
Table 1-3. XGATE Resources
Table 1-4. Derivative Dependent Memory Parameters
Internal Resource Size /KByte $Address
XGATE RAM 32K XGRAM_LOW = 0x0F_8000
FLASH 30K
1
1
This value is calculated by the following formula: (64K -2K- XGRAMSIZE)
XGFLASH_HIGH = 0x78_8000
Device FLASH_LOW
PPAGE
1
1
Number of 16K pages addressable via PPAGE register
RAM_LOW
RPAGE
2
2
Number of 4K pages addressing the RAM. RAM can also be mapped to 0x4000 - 0x7FFF
EE_LOW EPAGE
9S12XEP100 0x70_0000 64 0x0F_0000 16 0x13_F000 4
3
+ 32
4
3
Number of 1K pages addressing the Cache RAM via the EPAGE register counting downwards from 0xFF
4
Number of 1K pages addressing the Data flash via the EPAGE register starting upwards from 0x00
9S12XEP768 0x74_0000 48 0x0F_4000 12 0x13_F000 4 + 32
9S12XEQ512 0x78_0000 32 0x0F_8000 8 0x13_F000 4 + 32
9S12XEx384 0x78_0000
5
5
The 384K memory map is split into a 128K block from 0x78_0000 to 0x79_FFFF and a 256K block from
0x7C_0000 to 0x7F_FFFF
24 0x0F_A000 6 0x13_F000 4 + 32
9S12XET256
9S12XEA256
6
6
The 9S12XEA devices are a special bondout for access to extra ADC channels in 80QFP.
Available in 80QFP only. WARNING: NOT PIN-COMPATIBLE WITH REST OF FAMILY.
0x78_0000
7
7
The 256K memory map is split into a 128K block from 0x78_0000 to 0x79_FFFF and a 128K block from
0x7E_0000 to 0x7F_FFFF
16 0x0F_C000 4 0x13_F000 4 + 32
9S12XEG128
9S12XEA128
6
0x78_0000
8
8
The 128K memory map is split into a 64K block from 0x78_0000 to 0x78_FFFF and a 64K block from
0x7F_0000 to 0x7F_FFFF
8 0x0F_D000 3 0x13_F800 2 + 32
Table 1-5. Derivative Dependent Flash Block Mapping
Device 0x70_0000 0x74_0000 0x78_0000 0x7A_0000 0x7C_0000 0x7E_0000
9S12XEP100 B3 B2 B1S B1N B0
9S12XEP768 — B2 B1S B1N B0
9S12XEQ512 — — B1S B1N B0
9S12XEx384 — — B1S — B0
9S12XET256
9S12XEA256
1
— —
B1S
— —
B0(128K)
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages