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S912XEG384J3VA Datasheet, PDF (37/1324 Pages) Freescale Semiconductor, Inc – MC9S12XEP100 Reference Manual Covers MC9S12XE Family
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Chapter 1 Device Overview MC9S12XE-Family
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
Internal Resource
Size /KByte
$Address
XGATE RAM
32K
XGRAM_LOW = 0x0F_8000
FLASH
30K(1)
XGFLASH_HIGH = 0x78_8000
1. This value is calculated by the following formula: (64K -2K- XGRAMSIZE)
Table 1-4. Derivative Dependent Memory Parameters
Device
FLASH_LOW
PPAGE
(1)
RAM_LOW
RPAGE
(2)
EE_LOW
EPAGE
9S12XEP100 0x70_0000
64
0x0F_0000
16
0x13_F000 4(3) + 32(4)
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)
24
0x0F_A000
6
0x13_F000 4 + 32
9S12XET256
9S12XEA256 0x78_0000(7)
16
0x0F_C000
4
0x13_F000 4 + 32
(6)
9S12XEG128
9S12XEA1286
0x78_0000(8)
8
0x0F_D000
3
0x13_F800 2 + 32
1. Number of 16K pages addressable via PPAGE register
2. Number of 4K pages addressing the RAM. RAM can also be mapped to 0x4000 - 0x7FFF
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
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
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.
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
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
Device
9S12XEP100
9S12XEP768
9S12XEQ512
9S12XEx384
Table 1-5. Derivative Dependent Flash Block Mapping
0x70_0000 0x74_0000 0x78_0000 0x7A_0000 0x7C_0000 0x7E_0000
B3
B2
B1S
B1N
B0
—
B2
B1S
B1N
B0
—
—
B1S
B1N
B0
—
—
B1S
—
B0
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor
37
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