MC9S12XDP512MAG Freescale, MC9S12XDP512MAG Datasheet - Page 662
MC9S12XDP512MAG
Manufacturer Part Number
MC9S12XDP512MAG
Description
Manufacturer
Freescale
Datasheet
1.MC9S12XDP512MAG.pdf
(1348 pages)
Specifications of MC9S12XDP512MAG
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
40MHz
Interface Type
CAN/I2C/SCI/SPI
Total Internal Ram Size
32KB
# I/os (max)
119
Number Of Timers - General Purpose
12
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/3.15V
On-chip Adc
2(24-chx10-bit)
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
144
Package Type
LQFP
Program Memory Type
Flash
Program Memory Size
512KB
Lead Free Status / RoHS Status
Compliant
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Chapter 18 Memory Mapping Control (S12XMMCV3)
18.3.2.4
Read: Anytime
Write: anytime in special modes, one time only in other modes.
This register determines the position of the 256 Byte direct page within the memory map.It is valid for both
global and local mapping scheme.
Bits [22:16] of the global address will be formed by the GPAGE[6:0] bits in case the CPU executes a global
instruction in direct addressing mode or by the appropriate local address to the global address expansion
(refer to
662
Address: 0x0011
DP[15:8]
Reset
Field
7–0
W
R
Section 18.4.2.1.1, “Expansion of the Local Address
MOVB
LDY
DP15
Example 18-2. This example demonstrates usage of the Direct Addressing Mode
Direct Page Index Bits 15–8 — These bits are used by the CPU when performing accesses using the direct
addressing mode. The bits from this register form bits [15:8] of the address (see
Direct Page Register (DIRECT)
0
7
XGATE write access to this register during an CPU access which makes use
of this register could lead to unexpected results.
Bit22
#0x80,DIRECT
<00
DP14
0
6
Figure 18-9. DIRECT Address Mapping
Table 18-9. DIRECT Field Descriptions
Figure 18-8. Direct Register (DIRECT)
Bit16
MC9S12XDP512 Data Sheet, Rev. 2.21
Global Address [22:0]
DP13
0
5
;Set DIRECT register to 0x80. Write once only.
;Global data accesses to the range 0xXX_80XX can be direct.
;Logical data accesses to the range 0x80XX are direct.
;Load the Y index register from 0x8000 (direct access).
;< operator forces direct access on some assemblers but in
;many cases assemblers are “direct page aware” and can
Bit15
CAUTION
DP12
DP [15:8]
0
4
Description
CPU Address [15:0]
Bit8
DP11
Map).
0
3
Bit7
DP10
0
2
Figure
Freescale Semiconductor
Bit0
DP9
18-9).
0
1
DP8
0
0
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