PIC24FJ64GA106-E/PT Microchip Technology, PIC24FJ64GA106-E/PT Datasheet - Page 71
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PIC24FJ64GA106-E/PT
Manufacturer Part Number
PIC24FJ64GA106-E/PT
Description
16-bit, 16 MIPS, 64KB Flash, 16Kb RAM, 84 I/O, NanoWatt 64 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
PIC® 24Fr
Datasheet
1.PIC24FJ128GA106-IPT.pdf
(330 pages)
Specifications of PIC24FJ64GA106-E/PT
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
64KB (22K x 24)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
*
Processor Series
PIC24FJ256GA110
Core
PIC
Data Bus Width
16 bit
Data Ram Size
16 KB
Interface Type
UART, I2C, SPI
Maximum Clock Frequency
8 MHz
Number Of Timers
5
Operating Supply Voltage
3.6 V
Maximum Operating Temperature
- 40 C to + 85 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC24FJ64GA106-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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7.0
The PIC24F interrupt controller reduces the numerous
peripheral interrupt request signals to a single interrupt
request signal to the PIC24F CPU. It has the following
features:
• Up to 8 processor exceptions and software traps
• 7 user-selectable priority levels
• Interrupt Vector Table (IVT) with up to 118 vectors
• A 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
7.1
The Interrupt Vector Table (IVT) is shown in
The IVT resides in program memory, starting at location
000004h. The IVT contains 126 vectors, consisting of
8 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 asso-
ciated with vector 0 will take priority over interrupts at
any other vector address.
PIC24FJ256GA110
non-maskable traps and unique interrupts. These are
summarized in
2010 Microchip Technology Inc.
Note:
source
support
INTERRUPT CONTROLLER
Interrupt Vector Table
Section 8. “Interrupts” (DS39707).
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, refer to the
“PIC24F
Table 7-1
Family
family
and
Table
Reference
devices
7-2.
Figure
implement
Manual”,
PIC24FJ256GA110 FAMILY
7-1.
7.1.1
The Alternate Interrupt Vector Table (AIVT) is located
after the IVT, as shown in
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 inter-
rupt 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.
7.2
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 PC to zero. The micro-
controller then begins program execution at location
000000h. The user programs a GOTO instruction at the
Reset address, which redirects program execution to
the appropriate start-up routine.
Note:
is
Reset Sequence
provided
ALTERNATE INTERRUPT VECTOR
TABLE
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
Figure
ALTIVT
7-1. Access to the
DS39905E-page 71
control
bit
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