參數(shù)資料
型號(hào): MA330011
廠商: Microchip Technology
文件頁(yè)數(shù): 41/199頁(yè)
文件大?。?/td> 0K
描述: MODULE DSPIC33 100P TO 100QFP
標(biāo)準(zhǔn)包裝: 1
附件類型: 插拔式模塊(PIM)- dsPIC33FJ256GP710
適用于相關(guān)產(chǎn)品: Explorer 16(DM240001 或 DM240002)
產(chǎn)品目錄頁(yè)面: 658 (CN2011-ZH PDF)
相關(guān)產(chǎn)品: DSPIC33FJ64GP710T-I/PT-ND - IC DSPIC MCU/DSP 64K 100TQFP
DSPIC33FJ64GP710T-I/PF-ND - IC DSPIC MCU/DSP 64K 100TQFP
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DSPIC33FJ64GP310T-I/PF-ND - IC DSPIC MCU/DSP 64K 100TQFP
DSPIC33FJ256GP510T-I/PT-ND - IC DSPIC MCU/DSP 256K 100TQFP
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DSPIC33FJ128GP310T-I/PF-ND - IC DSPIC MCU/DSP 128K 100TQFP
DSPIC33FJ256GP710T-I/PT-ND - IC DSPIC MCU/DSP 256K 100TQFP
DSPIC33FJ256GP710T-I/PF-ND - IC DSPIC MCU/DSP 128K 100TQFP
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2007 Microchip Technology Inc.
Preliminary
DS70165E-page 133
dsPIC33F
6.4
Interrupt Setup Procedures
6.4.1
INITIALIZATION
To configure an interrupt source:
1.
Set the NSTDIS bit (INTCON1<15>) if nested
interrupts are not desired.
2.
Select the user-assigned priority level for the
interrupt source by writing the control bits in the
appropriate IPCx register. The priority level will
depend on the specific application and type of
interrupt source. If multiple priority levels are not
desired, the IPCx register control bits for all
enabled interrupt sources may be programmed
to the same non-zero value.
3.
Clear the interrupt flag status bit associated with
the peripheral in the associated IFSx register.
4.
Enable the interrupt source by setting the inter-
rupt enable control bit associated with the
source in the appropriate IECx register.
6.4.2
INTERRUPT SERVICE ROUTINE
The method that is used to declare an ISR and initialize
the IVT with the correct vector address will depend on
the programming language (i.e., C or assembler) and
the language development toolsuite that is used to
develop the application. In general, the user must clear
the interrupt flag in the appropriate IFSx register for the
source of interrupt that the ISR handles. Otherwise, the
ISR will be re-entered immediately after exiting the
routine. If the ISR is coded in assembly language, it
must be terminated using a RETFIE instruction to
unstack the saved PC value, SRL value and old CPU
priority level.
6.4.3
TRAP SERVICE ROUTINE
A Trap Service Routine (TSR) is coded like an ISR,
except that the appropriate trap status flag in the
INTCON1 register must be cleared to avoid re-entry
into the TSR.
6.4.4
INTERRUPT DISABLE
All user interrupts can be disabled using the following
procedure:
1.
Push the current SR value onto the software
stack using the PUSH instruction.
2.
Force the CPU to priority level 7 by inclusive
ORing the value OEh with SRL.
To enable user interrupts, the POP instruction may be
used to restore the previous SR value.
Note that only user interrupts with a priority level of 7 or
less can be disabled. Trap sources (level 8-level 15)
cannot be disabled.
The DISI instruction provides a convenient way to dis-
able interrupts of priority levels 1-6 for a fixed period of
time. Level 7 interrupt sources are not disabled by the
DISI
instruction.
Note:
At a device Reset, the IPCx registers are
initialized, such that all user interrupt
sources are assigned to priority level 4.
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MA330011 制造商:Microchip Technology Inc 功能描述:dsPIC33 GP 100P to 100P TQFP Plug-In Mod
MA330012 功能描述:子卡和OEM板 dsPIC33F GP 100P to 84P Plug In Module RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA330013 功能描述:子卡和OEM板 dsPIC33F Plug In Module RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA330014 功能描述:子卡和OEM板 dsPIC33 MC RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA330015 功能描述:子卡和OEM板 dsPIC33 GP RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit