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Chapter 4 Interrupt (S12ZINTV0)
MC9S12ZVM Family Reference Manual Rev. 1.3
140
Freescale Semiconductor
4.4.5
Exception Priority
The priority (from highest to lowest) and address of all exception vectors issued by the INT module upon
request by the CPU are shown in
. Generally, all non-maskable interrupts have higher priorities
than maskable interrupts. Please note that between the four software interrupts (Unimplemented op-code
trap page1/page2 requests, SWI request, SYS request) there is no real priority defined since they cannot
occur simultaneously (the S12Z CPU executes one instruction at a time).
4.4.6
Interrupt Vector Table Layout
The interrupt vector table contains 128 entries, each 32 bits (4 bytes) wide. Each entry contains a 24-bit
address (3 bytes) which is stored in the 3 low-significant bytes of the entry. The content of the most
significant byte of a vector-table entry is ignored.
illustrates the vector table entry format.
Figure 4-13. Interrupt Vector Table Entry
4.5
Initialization/Application Information
4.5.1
Initialization
After system reset, software should:
•
Initialize the interrupt vector base register if the interrupt vector table is not located at the default
location (0xFFFE00–0xFFFFFB).
Table 4-8. Exception Vector Map and Priority
Vector Address
(1)
1. 24 bits vector address based
Source
0xFFFFFC
Pin reset, power-on reset, low-voltage reset, clock monitor reset, COP watchdog reset
(Vector base + 0x0001F8)
Unimplemented page1 op-code trap (SPARE) vector request
(Vector base + 0x0001F4)
Unimplemented page2 op-code trap (TRAP) vector request
(Vector base + 0x0001F0)
Software interrupt instruction (SWI) vector request
(Vector base + 0x0001EC)
System call interrupt instruction (SYS) vector request
(Vector base + 0x0001E8)
Machine exception vector request
(Vector base + 0x0001E4)
Reserved
(Vector base + 0x0001E0)
Reserved
(Vector base + 0x0001DC)
Spurious interrupt
(Vector base + 0x0001D8)
XIRQ interrupt request
(Vector base + 0x0001D4)
IRQ interrupt request
(Vector base + 0x000010
..
Vector base + 0x0001D0)
Device specific I-bit maskable interrupt sources (priority determined by the associated
configuration registers, in descending order)
Bits
[31:24]
[23:0]
(unused)
ISR Address
Содержание MC9S12ZVM series
Страница 116: ...Chapter 2 Port Integration Module S12ZVMPIMV1 MC9S12ZVM Family Reference Manual Rev 1 3 116 Freescale Semiconductor ...
Страница 242: ...Chapter 7 ECC Generation Module SRAM_ECCV1 MC9S12ZVM Family Reference Manual Rev 1 3 242 Freescale Semiconductor ...
Страница 384: ...Chapter 10 Supply Voltage Sensor BATSV3 MC9S12ZVM Family Reference Manual Rev 1 3 384 Freescale Semiconductor ...
Страница 484: ...Chapter 13 Programmable Trigger Unit PTUV2 MC9S12ZVM Family Reference Manual Rev 1 3 484 Freescale Semiconductor ...
Страница 662: ...Chapter 17 Gate Drive Unit GDUV4 MC9S12ZVM Family Reference Manual Rev 1 3 662 Freescale Semiconductor ...
Страница 684: ...Chapter 18 LIN Physical Layer S12LINPHYV2 MC9S12ZVM Family Reference Manual Rev 1 3 684 Freescale Semiconductor ...
Страница 740: ...Chapter 19 128 KB Flash Module S12ZFTMRZ128K512V2 MC9S12ZVM Family Reference Manual Rev 1 3 740 Freescale Semiconductor ...
Страница 756: ...Appendix A MCU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 756 Freescale Semiconductor ...
Страница 772: ...Appendix D LINPHY Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 772 Freescale Semiconductor ...
Страница 776: ...Appendix E GDU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 776 Freescale Semiconductor ...
Страница 788: ...Appendix I MSCAN Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 788 Freescale Semiconductor ...
Страница 790: ...Appendix J Package Information MC9S12ZVM Family Reference Manual Rev 1 3 790 Freescale Semiconductor ...