DSPIC33FJ16MC304-E/PT Microchip Technology, DSPIC33FJ16MC304-E/PT Datasheet - Page 53
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DSPIC33FJ16MC304-E/PT
Manufacturer Part Number
DSPIC33FJ16MC304-E/PT
Description
16-bit DSC, 16KB Flash,Motor,40 MIPS,nanoWatt 44 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
dsPIC™ 33Fr
Specifications of DSPIC33FJ16MC304-E/PT
Core Processor
dsPIC
Core Size
16-Bit
Speed
40 MIPs
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, Motor Control PWM, QEI, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 9x10b/12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
DSPIC33FJ16MC304-E/PTTR
DSPIC33FJ16MC304-E/PTTR
DSPIC33FJ16MC304-E/PTTR
Available stocks
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Manufacturer
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Price
Company:
Part Number:
DSPIC33FJ16MC304-E/PT
Manufacturer:
Microchip
Quantity:
175
Company:
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DSPIC33FJ16MC304-E/PT
Manufacturer:
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4.6
The
dsPIC33FJ16MC304 architecture uses a 24-bit-wide
program space and a 16-bit-wide data space. The
architecture is also a modified Harvard scheme,
meaning that data can also be present in the program
space. To use this data successfully, it must be
accessed in a way that preserves the alignment of
information in both spaces.
Aside
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
architecture provides two methods by which program
space can be accessed during operation:
• Using table instructions to access individual bytes
• Remapping a portion of the program space into
Table instructions allow an application to read or write
to small areas of the program memory. This capability
makes the method ideal for accessing data tables that
need to be updated periodically. It also allows access
to all bytes of the program word. The remapping
method allows an application to access a large block of
data on a read-only basis, which is ideal for look-ups
from a large table of static data. The application can
only access the least significant word of the program
word.
TABLE 4-28:
© 2011 Microchip Technology Inc.
Instruction Access
(Code Execution)
TBLRD/TBLWT
(Byte/Word Read/Write)
Program Space Visibility
(Block Remap/Read)
Note 1:
or words anywhere in the program space
the data space (Program Space Visibility)
Access Type
Interfacing Program and Data
Memory Spaces
from
Data EA<15> is always ‘1’ in this case, but is not used in calculating the program space address. Bit 15 of
the address is PSVPAG<0>.
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
dsPIC33FJ32MC202/204
PROGRAM SPACE ADDRESS CONSTRUCTION
normal
User
User
Configuration
User
Access
execution,
Space
and
the
<23>
0
0
0
TBLPAG<7:0>
TBLPAG<7:0>
0xxx xxxx
1xxx xxxx
0xx
4.6.1
Since the address ranges for the data and program
spaces are 16 and 24 bits, respectively, a method is
needed to create a 23-bit or 24-bit program address
from 16-bit data registers. The solution depends on the
interface method to be used.
For table operations, the 8-bit Table Page register
(TBLPAG) is used to define a 32K word region within
the program space. This is concatenated with a 16-bit
EA to arrive at a full 24-bit program space address. In
this format, the Most Significant bit of TBLPAG is used
to determine if the operation occurs in the user memory
(TBLPAG<7> = 0) or the configuration memory
(TBLPAG<7> = 1).
For remapping operations, the 8-bit Program Space
Visibility register (PSVPAG) is used to define a
16K word page in the program space. When the Most
Significant bit of the EA is ‘1’, PSVPAG is concatenated
with the lower 15 bits of the EA to form a 23-bit program
space address. Unlike table operations, this limits
remapping operations strictly to the user memory area.
Table 4-28
created for table operations and remapping accesses
from the data EA. Here, P<23:0> refers to a program
space word, and D<15:0> refers to a data space word.
<22:16>
xxxx xxxx
PSVPAG<7:0>
xxxx
Program Space Address
and
ADDRESSING PROGRAM SPACE
xxxx
PC<22:1>
Figure 4-7
xxxx xxxx xxxx xxxx
xxxx xxxx xxxx xxxx
<15>
xxxx
show how the program EA is
xxx xxxx xxxx xxxx
Data EA<15:0>
Data EA<15:0>
xxxx xxx0
<14:1>
Data EA<14:0>
DS70283H-page 53
(1)
<0>
0
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