CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 665

Manufacturer Part Number

CSM9S12XDT512SLK

KIT STUDENT LEARNING 16BIT

Manufacturer

Freescale Semiconductor

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

The reset value of 0xFD ensures that there is a linear RAM space available between addresses 0x1000 and

0x3FFF out of reset.

The ﬁxed 4K page from 0x2000–0x2FFF of RAM is equivalent to page 254 (page number 0xFE).

The ﬁxed 4K page from 0x3000–0x3FFF of RAM is equivalent to page 255 (page number 0xFF).

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 = 0x00.

Figure 18-12. RPAGE Address Mapping

Table 18-12. RPAGE Field Descriptions

MC9S12XDP512 Data Sheet, Rev. 2.21

Global Address [22:0]

RPAGE Register [7:0]

Address: CPU Local Address

Chapter 18 Memory Mapping Control (S12XMMCV3)

or BDM Local Address

Address [11:0]