PIC24F16KA101T-I/SS Microchip Technology, PIC24F16KA101T-I/SS Datasheet - Page 65
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PIC24F16KA101T-I/SS
Manufacturer Part Number
PIC24F16KA101T-I/SS
Description
16KB Flash, 2KB RAM, 512B EEPROM, 16 MIPS, 16 I/O,16-bit PIC24F Family, NanoWatt
Manufacturer
Microchip Technology
Series
PIC® XLP™ 24Fr
Datasheets
1.MA240017.pdf
(254 pages)
2.PIC24F04KA201-ISS.pdf
(48 pages)
3.PIC24F16KA101-ISS.pdf
(18 pages)
Specifications of PIC24F16KA101T-I/SS
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
16KB (5.5K x 24)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 9x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MA240017 - MODULE PLUG-IN PIC24F16KA102 PIM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC24F16KA101T-I/SS
Manufacturer:
MICROCHIR
Quantity:
20 000
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8.0
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
• Seven user-selectable priority levels
• Interrupt Vector Table (IVT) with up to 118 vectors
• Unique vector for each interrupt or exception
• Fixed priority within a specified user priority level
• Alternate Interrupt Vector Table (AIVT) for debug
• Fixed interrupt entry and return latencies
8.1
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
non-maskable traps and unique interrupts; these are
summarized in Table 8-1 and Table 8-2.
© 2009 Microchip Technology Inc.
Note:
software traps
source
support
INTERRUPT CONTROLLER
Interrupt Vector (IVT) Table
This data sheet summarizes the features
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).
family
devices
implement
Preliminary
PIC24F16KA102 FAMILY
8.1.1
The Alternate Interrupt Vector Table (AIVT) is located
after the IVT, as displayed in Figure 8-1. Access to the
AIVT
(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
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.
Note:
is
Reset Sequence
provided
ALTERNATE INTERRUPT VECTOR
TABLE (AIVT)
Any unimplemented or unused vector
locations in the IVT and AIVT should be
programmed with the address of a default
interrupt handler routine that contains a
RESET instruction.
by
the
ALTIVT
DS39927B-page 63
control
bit
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