Datasheet

ST10F269 8 - INTERRUPT SYSTEM
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Hardware traps are exceptions or error conditions
that arise during run-time. They cause immediate
non-maskable system reaction similar to a
standard interrupt service (branching to a
dedicated vector table location).
The occurrence of a hardware trap is additionally
signified by an individual bit in the trap flag
register (TFR). Except when another higher
prioritized trap service is in progress, a hardware
trap will interrupt any other program execution.
Hardware trap services cannot not be interrupted
by standard interrupt or by PEC interrupts.
8.3 - Interrupt Control Registers
All interrupt control registers are identically
organized. The lower 8 bits of an interrupt control
register contain the complete interrupt status
information of the associated source, which is
required during one round of prioritization, the
upper 8 bits of the respective register are
reserved. All interrupt control registers are bit
addressable and all bits can be read or written via
software.
This allows each interrupt source to be
programmed or modified with just one instruction.
When accessing interrupt control registers
through instructions which operate on Word data
types, their upper 8 bits (15...8) will return zeros,
when read, and will discard written data.
The layout of the Interrupt Control registers shown
below applies to each xxIC register, where xx
stands for the mnemonic for the respective
source.
CAPCOM Timer 1 T1IR T1IE T1INT 00’0084h 21h
CAPCOM Timer 7 T7IR T7IE T7INT 00’00F4h 3Dh
CAPCOM Timer 8 T8IR T8IE T8INT 00’00F8h 3Eh
GPT1 Timer 2 T2IR T2IE T2INT 00’0088h 22h
GPT1 Timer 3 T3IR T3IE T3INT 00’008Ch 23h
GPT1 Timer 4 T4IR T4IE T4INT 00’0090h 24h
GPT2 Timer 5 T5IR T5IE T5INT 00’0094h 25h
GPT2 Timer 6 T6IR T6IE T6INT 00’0098h 26h
GPT2 CAPREL Register CRIR CRIE CRINT 00’009Ch 27h
A/D Conversion Complete ADCIR ADCIE ADCINT 00’00A0h 28h
A/D Overrun Error ADEIR ADEIE ADEINT 00’00A4h 29h
ASC0 Transmit S0TIR S0TIE S0TINT 00’00A8h 2Ah
ASC0 Transmit Buffer S0TBIR S0TBIE S0TBINT 00’011Ch 47h
ASC0 Receive S0RIR S0RIE S0RINT 00’00ACh 2Bh
ASC0 Error S0EIR S0EIE S0EINT 00’00B0h 2Ch
SSC Transmit SCTIR SCTIE SCTINT 00’00B4h 2Dh
SSC Receive SCRIR SCRIE SCRINT 00’00B8h 2Eh
SSC Error SCEIR SCEIE SCEINT 00’00BCh 2Fh
PWM Channel 0...3 PWMIR PWMIE PWMINT 00’00FCh 3Fh
CAN1 Interface XP0IR XP0IE XP0INT 00’0100h 40h
CAN2 Interface XP1IR XP1IE XP1INT 00’0104h 41h
FLASH Ready / Busy XP2IR XP2IE XP2INT 00’0108h 42h
PLL Unlock/OWD XP3IR XP3IE XP3INT 00’010Ch 43h
Table 7 : Interrupt Sources (continued)
Source of Interrupt or PEC
Service Request
Request
Flag
Enable
Flag
Interrupt
Vector
Vector
Location
Trap
Number