Interrupt Module (S12SINTV1)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
241
If the interrupt source is unknown (for example, in the case where an interrupt request becomes inactive
after the interrupt has been recognized, but prior to the CPU vector request), the vector address supplied
to the CPU will default to that of the spurious interrupt vector.
NOTE
Care must be taken to ensure that all interrupt requests remain active until
the system begins execution of the applicable service routine; otherwise, the
exception request may not get processed at all or the result may be a
spurious interrupt request (vector at address (vector base + 0x0080)).
7.4.3
Reset Exception Requests
The INT module supports three system reset exception request types (please refer to the Clock and Reset
generator module for details):
1. Pin reset, power-on reset or illegal address reset, low voltage reset (if applicable)
2. Clock monitor reset request
3. COP watchdog reset request
7.4.4
Exception Priority
The priority (from highest to lowest) and address of all exception vectors issued by the INT module upon
request by the CPU is shown in
Table 7-4. Exception Vector Map and Priority
Vector Address
1
1
16 bits vector address based
Source
0xFFFE
Pin reset, power-on reset, illegal address reset, low voltage reset (if applicable)
0xFFFC
Clock monitor reset
0xFFFA
COP watchdog reset
(Vector base + 0x00F8)
Unimplemented opcode trap
(Vector base + 0x00F6)
Software interrupt instruction (SWI) or BDM vector request
(Vector base + 0x00F4)
X bit maskable interrupt request (XIRQ or D2D error interrupt)
2
2
D2D error interrupt on MCUs featuring a D2D initiator module, otherwise XIRQ pin interrupt
(Vector base + 0x00F2)
IRQ or D2D interrupt request
3
3
D2D interrupt on MCUs featuring a D2D initiator module, otherwise IRQ pin interrupt
(Vector base + 0x00F0–0x0082) Device specific I bit maskable interrupt sources (priority determined by the low byte of the
vector address, in descending order)
(Vector base + 0x0080)
Spurious interrupt
Summary of Contents for MC9S12VRP64
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Page 46: ...Device Overview S12VRP Series MC9S12VRP Family Reference Manual Rev 1 3 46 NXP Semiconductors ...
Page 236: ...S12S Debug Module S12DBGV2 MC9S12VRP Family Reference Manual Rev 1 3 236 NXP Semiconductors ...
Page 244: ...Interrupt Module S12SINTV1 MC9S12VRP Family Reference Manual Rev 1 3 244 NXP Semiconductors ...
Page 358: ...Timer Module TIM16B2CV3 MC9S12VRP Family Reference Manual Rev 1 3 358 NXP Semiconductors ...
Page 436: ...Supply Voltage Sensor BATSV2 MC9S12VRP Family Reference Manual Rev 1 3 436 NXP Semiconductors ...
Page 528: ...NVM Electrical Parameters MC9S12VRP Family Reference Manual Rev 1 3 528 NXP Semiconductors ...
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