dsPIC33FJ32MC104-I/PT Microchip Technology, dsPIC33FJ32MC104-I/PT Datasheet - Page 124
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dsPIC33FJ32MC104-I/PT
Manufacturer Part Number
dsPIC33FJ32MC104-I/PT
Description
Digital Signal Processors & Controllers - DSP, DSC 16bit Mtr Cnt Fam 16 MIPS 32KBFLSH 2KBRAM
Manufacturer
Microchip Technology
Type
dsPIC33FJ32(GP/MC)101/102/104r
Datasheet
1.DSPIC33FJ32GP102-ISO.pdf
(386 pages)
Specifications of dsPIC33FJ32MC104-I/PT
Rohs
yes
Core
dsPIC33F
Data Bus Width
16 bit
Program Memory Size
32 KB
Data Ram Size
2 KB
Maximum Clock Frequency
7.37 MHz, 32 kHz
Number Of Programmable I/os
35
Number Of Timers
5 x 16-bit, 2 x 32-bit
Device Million Instructions Per Second
16 MIPs
Operating Supply Voltage
3 V to 3.6 V
Maximum Operating Temperature
+ 125 C
Package / Case
TQFP-44
Mounting Style
SMD/SMT
Family / Core
dsPIC33FJ32(GP/MC)101/102/104
Interface Type
I2C, SPI, UART
Minimum Operating Temperature
- 40 C
On-chip Adc
Yes
Product
DSPs
Program Memory Type
Flash
Supply Current
10 mA
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DSPIC33FJ32MC104-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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dsPIC33FJ16(GP/MC)101/102 AND dsPIC33FJ32(GP/MC)101/102/104
7.4
7.4.1
To configure an interrupt source at initialization:
1.
2.
3.
4.
7.4.2
The method used to declare an ISR and initialize the
IVT with the correct vector address depends on the
programming language (C or assembler) and the
language development toolsuite used to develop the
application.
In general, the user application must clear the interrupt
flag in the appropriate IFSx register for the source of
interrupt that the ISR handles. Otherwise, program will
re-enter the ISR 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.
DS70652E-page 124
Set the NSTDIS bit (INTCON1<15>) if nested
interrupts are not desired.
Select the user-assigned priority level for the
interrupt source by writing the control bits into
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 can be programmed
to the same non-zero value.
Clear the interrupt flag status bit associated with
the peripheral in the associated IFSx register.
Enable the interrupt source by setting the inter-
rupt enable control bit associated with the
source in the appropriate IECx register.
Note:
Interrupt Setup Procedures
INITIALIZATION
INTERRUPT SERVICE ROUTINE
At a device Reset, the IPCx registers
are initialized such that all user
interrupt sources are assigned to
Priority Level 4.
7.4.3
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.
7.4.4
All user interrupts can be disabled using this
procedure:
1.
2.
To enable user interrupts, the POP instruction can be
used to restore the previous SR value.
The DISI instruction provides a convenient way to
disable interrupts of Priority Levels 1-6 for a fixed
period of time. Level 7 interrupt sources are not
disabled by the DISI instruction.
Note:
Push the current SR value onto the software
stack using the PUSH instruction.
Force the CPU to Priority Level 7 by inclusive
ORing the value OEh with SRL.
TRAP SERVICE ROUTINE
INTERRUPT DISABLE
Only user interrupts with a priority level of
7 or lower can be disabled. Trap sources
(Level 8-Level 15) cannot be disabled.
2011-2012 Microchip Technology Inc.
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