IC PIC MCU FLASH 16K 28-SSOP

PIC24F16KA102-I/SS

Manufacturer Part NumberPIC24F16KA102-I/SS
DescriptionIC PIC MCU FLASH 16K 28-SSOP
ManufacturerMicrochip Technology
SeriesPIC® XLP™ 24F
PIC24F16KA102-I/SS datasheets
 


Specifications of PIC24F16KA102-I/SS

Program Memory TypeFLASHProgram Memory Size16KB (5.5K x 24)
Package / Case28-SSOPCore ProcessorPIC
Core Size16-BitSpeed32MHz
ConnectivityI²C, IrDA, SPI, UART/USARTPeripheralsBrown-out Detect/Reset, POR, PWM, WDT
Number Of I /o24Eeprom Size512 x 8
Ram Size1.5K x 8Voltage - Supply (vcc/vdd)1.8 V ~ 3.6 V
Data ConvertersA/D 9x10bOscillator TypeInternal
Operating Temperature-40°C ~ 85°CProcessor SeriesPIC24F
CorePICData Bus Width16 bit
Data Ram Size1.5 KBInterface TypeI2C/IrDA/SPI/UART
Maximum Clock Frequency32 MHzNumber Of Programmable I/os24
Number Of Timers3Operating Supply Voltage1.8 V to 3.6 V
Maximum Operating Temperature+ 85 CMounting StyleSMD/SMT
3rd Party Development Tools52713-733, 52714-737, 53276-922, EWDSPICDevelopment Tools By SupplierPG164130, DV164035, DV244005, DV164005, DM240001
Minimum Operating Temperature- 40 COn-chip Adc9-ch x 10-bit
Lead Free Status / RoHS StatusLead free / RoHS CompliantFor Use WithMA240017 - MODULE PLUG-IN PIC24F16KA102 PIM
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Page 65/254

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8.0
INTERRUPT CONTROLLER
This data sheet summarizes the features
Note:
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information on the
Interrupt Controller, refer to the “PIC24F
Family Reference Manual”, Section 8.
“Interrupts” (DS39707).
The PIC24F interrupt controller reduces the numerous
peripheral interrupt request signals to a single interrupt
request signal to the CPU. It has the following features:
• Up to eight processor exceptions and
software traps
• Seven user-selectable priority levels
• Interrupt Vector Table (IVT) with up to 118 vectors
• Unique vector for each interrupt or exception
source
• Fixed priority within a specified user priority level
• Alternate Interrupt Vector Table (AIVT) for debug
support
• Fixed interrupt entry and return latencies
8.1
Interrupt Vector (IVT) Table
The IVT is displayed in Figure 8-1. The IVT resides in
the program memory, starting at location 000004h. The
IVT contains 126 vectors, consisting of eight
non-maskable trap vectors, plus, up to 118 sources of
interrupt. In general, each interrupt source has its own
vector. Each interrupt vector contains a 24-bit wide
address. The value programmed into each interrupt
vector location is the starting address of the associated
Interrupt Service Routine (ISR).
Interrupt vectors are prioritized in terms of their natural
priority; this is linked to their position in the vector table.
All other things being equal, lower addresses have a
higher natural priority. For example, the interrupt
associated with vector 0 will take priority over interrupts
at any other vector address.
PIC24F16KA102
family
devices
non-maskable traps and unique interrupts; these are
summarized in Table 8-1 and Table 8-2.
© 2009 Microchip Technology Inc.
PIC24F16KA102 FAMILY
8.1.1
ALTERNATE INTERRUPT VECTOR
TABLE (AIVT)
The Alternate Interrupt Vector Table (AIVT) is located
after the IVT, as displayed in Figure 8-1. Access to the
AIVT
is
provided
(INTCON2<15>). If the ALTIVT bit is set, all interrupt
and exception processes will 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 needed, the AIVT should be programmed with
the same addresses used in the IVT.
8.2
Reset Sequence
A device Reset is not a true exception because the
interrupt controller is not involved in the Reset process.
The PIC24F devices clear their registers in response to
a Reset, which forces the Program Counter (PC) to
zero. The microcontroller then begins program execu-
tion at location 000000h. The user programs a GOTO
instruction at the Reset address, which redirects the
program execution to the appropriate start-up routine.
Any unimplemented or unused vector
Note:
locations in the IVT and AIVT should be
programmed with the address of a default
interrupt handler routine that contains a
RESET instruction.
implement
Preliminary
by
the
ALTIVT
control
bit
DS39927B-page 63