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SC312XDP512F0MPVR датащи(PDF) 627 Page - Freescale Semiconductor, Inc

номер детали SC312XDP512F0MPVR
подробное описание детали  HCS12X Microcontrollers
PDF  1348 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

SC312XDP512F0MPVR датащи(HTML) 627 Page - Freescale Semiconductor, Inc

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Chapter 17 Memory Mapping Control (S12XMMCV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
627
17.3.2.8
Program Page Index Register (PPAGE)
Read: Anytime
Write: Anytime
The program page index register allows accessing up to 4 Mbyte of FLASH or ROM in the global memory
map by using the eight page index bits to page 16 Kbyte blocks into the program page window located in
the CPU local memory map from address $8000 to address $BFFF (see Figure 1-16). The CPU has a
special access to read and write this register during execution of CALL and RTC instructions.
CAUTION
XGATE write access to this register during an CPU access which makes use
of this register could lead to unexpected results.
Figure 17-16. PPAGE Address Mapping
NOTE
Writes to this register using the special access of the CALL and RTC
instructions will be complete before the end of the instruction execution.
Address: 0x0030
76543210
R
PIX7
PIX6
PIX5
PIX4
PIX3
PIX2
PIX1
PIX0
W
Reset
11111110
Figure 17-15. Program Page Index Register (PPAGE)
Bit14
Bit0
1
Address [13:0]
PPAGE Register [7:0]
Global Address [22:0]
Bit13
Bit21
Address: CPU Local Address
or BDM Local Address



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