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M30222 Fiches technique(PDF) 37 Page - Mitsubishi Electric Semiconductor |
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M30222 Fiches technique(HTML) 37 Page - Mitsubishi Electric Semiconductor |
37 / 237 page 1-38 Under development Specifications in this manual are tentative and subject to change Rev. G Overview of Interrupts MITSUBISHI MICROCOMPUTERS M30222 Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Interrupts and Interrupt Vector Tables If an interrupt request is accepted, program execution branches to the interrupt routine set in the interrupt vector table. Set the first address of the interrupt routine in each vector table. Figure 1.22 shows the format for specifying the address. Two types of interrupt vector tables are available — fixed vector table in which addresses are fixed and variable vector table in which addresses can be varied by the setting. • Fixed vector tables The fixed vector table is a table in which addresses are fixed. The vector tables are located in an area extending from FFFDC16 to FFFFF16. One vector table comprises four bytes. Set the first address of interrupt routine in each vector table. Table 1.17 shows the interrupts assigned to the fixed vector tables and addresses of vector tables. Figure 1.22. Format for specifying interrupt vector addresses Table 1.17. Interrupts assigned to the fixed vector tables and addresses of vector tables Mid address Low address 0 0 0 0 High address 0 0 0 0 0 0 0 0 Vector address + 0 Vector address + 1 Vector address + 2 Vector address + 3 LSB MSB Interrupt source Vector table addresses Remarks Address (L) to address (H) Undefined instruction FFFDC16 to FFFDF16 Interrupt on UND instruction Overflow FFFE0 16 to FFFE3 16 Interrupt on overflow BRK instruction FFFE4 16 to FFFE716 If thisvector contains FFFFF16, program execution starts from the address shown by the vector in the variable vector table Address match FFFE8 16 to FFFEB16 Requires address-matching interrupt enable bit Single step (Note) FFFEC16 to FFFEF16 Do not use Watchdog timer FFFF016 to FFFF316 DBC (Note) FFFF416 to FFFF716 Do not use NMI FFFF816 to FFFFB16 External interrupt by input to NMI pin Reset FFFFC 16 to FFFFF16 Note: Interrupts used for debugging purposes only. |
Numéro de pièce similaire - M30222 |
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Description similaire - M30222 |
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