參數(shù)資料
型號: DSPIC30F3013-30I/SP
廠商: Microchip Technology
文件頁數(shù): 144/161頁
文件大?。?/td> 0K
描述: IC DSPIC MCU/DSP 24K 28DIP
產(chǎn)品培訓(xùn)模塊: Serial Communications using dsPIC30F I2C
Serial Communications using dsPIC30F SPI
Serial Communications using dsPIC30F UART
dsPIC30F 12 bit ADC - Part 2
dsPIC30F Addressing Modes - Part 1
dsPIC30F Architecture - Part 1
dsPIC30F DSP Engine & ALU
dsPIC30F Interrupts
dsPIC30F Motor Control PWM
dsPIC Timers
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
標(biāo)準(zhǔn)包裝: 15
系列: dsPIC™ 30F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 30 MIP
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 20
程序存儲器容量: 24KB(8K x 24)
程序存儲器類型: 閃存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-DIP(0.300",7.62mm)
包裝: 管件
產(chǎn)品目錄頁面: 651 (CN2011-ZH PDF)
配用: DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名稱: DSPIC30F301330ISP
2010 Microchip Technology Inc.
DS70139G-page 69
dsPIC30F2011/2012/3012/3013
FIGURE 8-1:
TRAP VECTORS
8.4
Interrupt Sequence
All interrupt event flags are sampled in the beginning of
each instruction cycle by the IFSx registers. A pending
Interrupt Request (IRQ) is indicated by the flag bit
being equal to a ‘1’ in an IFSx register. The IRQ causes
an interrupt to occur if the corresponding bit in the
Interrupt Enable (IECx) register is set. For the
remainder of the instruction cycle, the priorities of all
pending interrupt requests are evaluated.
If there is a pending IRQ with a priority level greater
than the current processor priority level in the IPL bits,
the processor is interrupted.
The processor then stacks the current program counter
and the low byte of the processor STATUS register
(SRL), as shown in Figure 8-2. The low byte of the
STATUS register contains the processor priority level at
the time prior to the beginning of the interrupt cycle.
The processor then loads the priority level for this
interrupt into the STATUS register. This action disables
all lower priority interrupts until the completion of the
Interrupt Service Routine (ISR).
FIGURE 8-2:
INTERRUPT STACK
FRAME
The RETFIE (return from interrupt) instruction unstacks
the program counter and STATUS registers to return
the processor to its state prior to the interrupt
sequence.
8.5
Alternate Vector Table
In program memory, the Interrupt Vector Table (IVT) is
followed by the Alternate Interrupt Vector Table (AIVT),
as shown in Figure 8-1. Access to the alternate vector
table is provided by the ALTIVT bit in the INTCON2
register. If the ALTIVT bit is set, all interrupt and
exception processes use the alternate vectors instead
of the default vectors. The alternate vectors are
organized in the same manner as the default vectors.
The AIVT supports emulation and debugging efforts by
providing a means to switch between an application
and a support environment without requiring the
interrupt vectors to be reprogrammed. This feature also
enables switching between applications for evaluation
of different software algorithms at run time.
If the AIVT is not required, the program memory
allocated to the AIVT may be used for other purposes.
AIVT is not a protected section and may be freely
programmed by the user.
Address Error Trap Vector
Oscillator Fail Trap Vector
Stack Error Trap Vector
Reserved Vector
Math Error Trap Vector
Reserved
Oscillator Fail Trap Vector
Address Error Trap Vector
Reserved Vector
Interrupt 0 Vector
Interrupt 1 Vector
Interrupt 52 Vector
Interrupt 53 Vector
Math Error Trap Vector
D
e
cr
easing
Pr
iorit
y
0x000000
0x000014
Reserved
Stack Error Trap Vector
Reserved Vector
Interrupt 0 Vector
Interrupt 1 Vector
Interrupt 52 Vector
Interrupt 53 Vector
IVT
AIVT
0x000080
0x00007E
0x0000FE
Reserved
0x000094
Reset - GOTO Instruction
Reset - GOTO Address
0x000002
Reserved
0x000082
0x000084
0x000004
Reserved Vector
Note 1: The user can always lower the priority
level by writing a new value into SR. The
Interrupt Service Routine must clear the
interrupt flag bits in the IFSx register
before lowering the processor interrupt
priority, in order to avoid recursive
interrupts.
2: The IPL3 bit (CORCON<3>) is always
clear
when
interrupts
are
being
processed. It is set only during execution
of traps.
<Free Word>
0
15
W15 (before CALL)
W15 (after CALL)
S
tack
Gr
ows
T
o
wa
rds
Higher
Addr
ess
0x0000
PC<15:0>
SRL IPL3 PC<22:16>
POP : [--W15]
PUSH : [W15++]
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