CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 625

Manufacturer Part Number

CSM9S12XDT512SLK

KIT STUDENT LEARNING 16BIT

Manufacturer

Freescale Semiconductor

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

The reset value of $FD ensures that there is a linear RAM space available between addresses $1000 and

$3FFF out of reset.

The ﬁxed 4K page from $2000–$2FFF of RAM is equivalent to page 254 (page number $FE).

The ﬁxed 4K page from $3000–$3FFF of RAM is equivalent to page 255 (page number $FF).

Freescale Semiconductor

RAM Page Index Bits 7–0 — These page index bits are used to select which of the 256 RAM array pages is to

be accessed in the RAM Page Window.

Because RAM page 0 has the same global address as the register space, it is

possible to write to registers through the RAM space when RPAGE = $00.

Figure 17-12. RPAGE Address Mapping

Table 17-11. RPAGE Field Descriptions

MC9S12XDP512 Data Sheet, Rev. 2.21

Global Address [22:0]

RPAGE Register [7:0]

Address: CPU Local Address

Chapter 17 Memory Mapping Control (S12XMMCV2)

or BDM Local Address

Address [11:0]