MC9RS08KA1 FREESCALE [Freescale Semiconductor, Inc], MC9RS08KA1 Datasheet - Page 34

• Manufacturer Part Number: MC9RS08KA1
• Description: RS08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 4 Memory
Table 4-5
34
shows the memory block to be accessed through paging window ($00C0–$00FF).
Start address of memory block selected
Physical location $0000-$000E is RAM. Physical location $000F is register
X. D[X] register is mapped to address $000E only. The physical RAM in
$000E can be accessing through D[X] register when X register is either $0E
or $CE with PAGESEL is $00.
When PAGESEL register is $00, paging window is mapped to the first page
($00-$3F). Paged location $00C0–$00CE is mapped to physical location
$0000-$000E, i.e., RAM. Paged location $00CF is mapped to register X.
Therefore, accessing address $CE returns the physical RAM content in
$000E, accessing address $000E returns D[X] register content.
Figure 4-6. Memory Block Boundary Selector
Table 4-5. Paging Window for $00C0–$00FF
MC9RS08KA2 Series Data Sheet, Rev. 3
$00
$01
$02
$03
$04
$FE
$FF
Page
.
.
.
NOTE
$0000–$003F
$0040–$007F
$0080–$00BF
$00C0–$00FF
$0100–$013F
$3F80–$3FBF
$3FC0–$3FFF
Memory Address
.
.
.
AD[13:6]
14-bit memory address
0 0 0 0 0 0
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