MC9S12KG128_10 Datasheet, PDF (555/606 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 19 Module Mapping Control (MMCV4) Block Description
Table 19-9. Allocated RAM Memory Space (continued)
ram_sw2:ram_sw0
Allocated
RAM Space
RAM
Mappable Region
INITRM
Bits Used
RAM Reset
Base Address¹
011
8K bytes
8K bytes
RAM[15:13]
0x0000
100
10K bytes
16K bytes ²
RAM[15:14]
0x1800
101
12K bytes
16K bytes ²
RAM[15:14]
0x1000
110
14K bytes
16K bytes ²
RAM[15:14]
0x0800
111
16K bytes
16K bytes
RAM[15:14]
0x0000
1 _{The RAM Reset BASE Address is based on the reset value of the INITRM register, 0x0009.}
2 _{Alignment of the Allocated RAM space within the RAM mappable region is dependent on the value of RAMHAL.}
NOTE
As stated, the bits in this register provide read visibility to the system
physical memory space allocations defined at system integration. The actual
array size for any given type of memory block may differ from the allocated
size. Please refer to the device overview chapter for actual sizes.
19.3.2.8 Memory Size Register 1 (MEMSIZ1)
Module Base + 0x001D
Starting address location affected by INITRG register setting.
7
6
5
4
3
2
1
0
R ROM_SW1 ROM_SW0
0
0
0
0
PAG_SW1 PAG_SW0
W
Reset
—
—
—
—
—
—
—
—
= Unimplemented or Reserved
Figure 19-10. Memory Size Register 1 (MEMSIZ1)
Read: Anytime
Write: Writes have no effect
Reset: Defined at chip integration, see device overview section.
The MEMSIZ1 register reflects the state of the FLASH or ROM physical memory space and paging
switches at the core boundary which are configured at system integration. This register allows read
visibility to the state of these switches.
MC9S12KG128 Data Sheet, Rev. 1.16
Freescale Semiconductor
555