參數(shù)資料
型號(hào)： DSPIC30F4011-20I/ML
廠商： Microchip Technology
文件頁(yè)數(shù)： 177/238頁(yè)
文件大?。?/td> 0K
描述： IC DSPIC MCU/DSP 48K 44QFN
產(chǎn)品培訓(xùn)模塊： dsPIC30F Quadrature Encoder Interface
Serial Communications using dsPIC30F CAN
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： 45
系列： dsPIC™ 30F
核心處理器： dsPIC
芯體尺寸： 16-位
速度： 20 MIPS
連通性： CAN，I²C，SPI，UART/USART
外圍設(shè)備： 高級(jí)欠壓探測(cè)/復(fù)位，電機(jī)控制 PWM，QEI，POR，PWM，WDT
輸入/輸出數(shù)： 30
程序存儲(chǔ)器容量： 48KB（16K x 24）
程序存儲(chǔ)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 9x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-VQFN 裸露焊盤(pán)
包裝： 管件
配用： XLT44QFN2-ND - SOCKET TRAN ICE 44QFN/40DIP
AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
其它名稱： DSPIC30F401120/ML
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2010 Microchip Technology Inc.
DS70135G-page 43
dsPIC30F4011/4012
5.0
INTERRUPTS
The dsPIC30F4011/4012 has 30 interrupt sources and
4 processor exceptions (traps), which must be
arbitrated based on a priority scheme.
The CPU is responsible for reading the Interrupt Vector
Table (IVT) and transferring the address contained in
the interrupt vector to the program counter. The inter-
rupt vector is transferred from the program data bus
into the program counter via a 24-bit wide multiplexer
on the input of the program counter.
The Interrupt Vector Table (IVT) and Alternate Interrupt
Vector Table (AIVT) are placed near the beginning of
program memory (0x000004). The IVT and AIVT are
shown in Figure 5-1.
The
interrupt
controller
is
responsible
for
pre-
processing the interrupts and processor exceptions,
prior to their being presented to the processor core.
The peripheral interrupts and traps are enabled,
prioritized and controlled using centralized Special
Function Registers:
IFS0<15:0>, IFS1<15:0>, IFS2<15:0>
All interrupt request flags are maintained in these
three registers. The flags are set by their respec-
tive peripherals or external signals, and they are
cleared via software.
IEC0<15:0>, IEC1<15:0>, IEC2<15:0>
All interrupt enable control bits are maintained in
these three registers. These control bits are used
to individually enable interrupts from the
peripherals or external signals.
IPC0<15:0>... IPC11<7:0>
The user-assignable priority level associated with
each of these interrupts is held centrally in these
twelve registers.
IPL<3:0>
The current CPU priority level is explicitly stored
in the IPL bits. IPL<3> is present in the CORCON
register, whereas IPL<2:0> are present in the
STATUS register (SR) in the processor core.
INTCON1<15:0>, INTCON2<15:0>
Global interrupt control functions are derived from
these two registers. INTCON1 contains the con-
trol and status flags for the processor exceptions.
The INTCON2 register controls the external
interrupt request signal behavior and the use of
the AIVT.
All interrupt sources can be user-assigned to one of
seven priority levels, 1 through 7, via the IPCx
registers. Each interrupt source is associated with an
interrupt vector, as shown in Table 5-1. Levels 7 and 1
represent the highest and lowest maskable priorities,
respectively.
If the NSTDIS bit (INTCON1<15>) is set, nesting of
interrupts is prevented. Thus, if an interrupt is currently
being serviced, processing of a new interrupt is pre-
vented, even if the new interrupt is of higher priority
than the one currently being serviced.
Certain interrupts have specialized control bits for fea-
tures like edge or level triggered interrupts, interrupt-
on-change, etc. Control of these features remains
within the peripheral module which generates the
interrupt.
The DISI instruction can be used to disable the
processing of interrupts of priorities 6 and lower for a
certain number of instructions, during which the DISI bit
(INTCON2<14>) remains set.
When an interrupt is serviced, the PC is loaded with the
address stored in the vector location in program memory
that corresponds to the interrupt. There are 63 different
vectors within the IVT (refer to Figure 5-2). These vec-
tors are contained in locations 0x000004 through
0x0000FE of program memory (refer to Figure 5-2).
These locations contain 24-bit addresses, and in order
to preserve robustness, an address error trap will take
place should the PC attempt to fetch any of these words
during normal execution. This prevents execution of
random data as a result of accidentally decrementing a
PC into vector space, accidentally mapping a data space
address into vector space or the PC rolling over to
0x000000 after reaching the end of implemented
program memory space. Execution of a GOTO instruction
to this vector space will also generate an address error
trap.
Note:
This data sheet summarizes features of
this group of dsPIC30F devices and is not
intended to be a complete reference
source. For more information on the CPU,
peripherals,
register
descriptions
and
general device functionality, refer to the
“dsPIC30F Family Reference Manual”
(DS70046). For more information on the
device instruction set and programming,
refer to the “16-bit MCU and DSC
Reference Manual” (DS70157).
Note:
Interrupt flag bits get set when an interrupt
condition occurs, regardless of the state of
its
corresponding
enable
bit.
User
software should ensure the appropriate
interrupt flag bits are clear prior to
enabling an interrupt.
Note:
Assigning a priority level of 0 to an
interrupt source is equivalent to disabling
that interrupt.
Note:
The IPL bits become read-only whenever
the NSTDIS bit has been set to ‘1’.
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