PIC24FJ32GA002-I/SO Microchip Technology Inc., PIC24FJ32GA002-I/SO Datasheet - Page 217
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PIC24FJ32GA002-I/SO
Manufacturer Part Number
PIC24FJ32GA002-I/SO
Description
MCU, 16-Bit, 28-Pin, 32KB Flash, 8KB RAM, 21 I/O, Nanowatt
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC24FJ32GA002-ISP.pdf
(256 pages)
Specifications of PIC24FJ32GA002-I/SO
A/d Inputs
10 Channel, 10-Bit
Comparators
2
Cpu Speed
16 MIPS
Eeprom Memory
0 Bytes
Input Output
21
Interface
I2C/SPI/UART
Memory Capacity
32 Kbytes
Memory Type
Flash
Number Of Bits
16
Number Of Inputs
21
Number Of Pins
28
Package Type
28-pin SOIC
Programmable Memory
32K Bytes
Ram Size
8K Bytes
Speed
32 MHz
Timers
5-16-bit
Voltage, Range
2-3.6 V
Voltage, Rating
2-3.6 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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25.0
The PIC24F instruction set adds many enhancements
to the previous PIC
taining an easy migration from previous PIC MCU
instruction sets. Most instructions are a single program
memory word. Only three instructions require two
program memory locations.
Each single-word instruction is a 24-bit word divided
into an 8-bit opcode, which specifies the instruction
type and one or more operands, which further specify
the operation of the instruction. The instruction set is
highly orthogonal and is grouped into four basic
categories:
• Word or byte-oriented operations
• Bit-oriented operations
• Literal operations
• Control operations
Table 25-1 shows the general symbols used in
describing the instructions. The PIC24F instruction set
summary in Table 25-2 lists all the instructions, along
with the status flags affected by each instruction.
Most word or byte-oriented W register instructions
(including
operands:
• The first source operand which is typically a
• The second source operand which is typically a
• The destination of the result which is typically a
However, word or byte-oriented file register instructions
have two operands:
• The file register specified by the value ‘f’
• The destination, which could either be the file
Most
rotate/shift instructions) have two operands:
• The W register (with or without an address
• The bit in the W register or file register
© 2007 Microchip Technology Inc.
Note:
register ‘Wb’ without any address modifier
register ‘Ws’ with or without an address modifier
register ‘Wd’ with or without an address modifier
register ‘f’ or the W0 register, which is denoted as
‘WREG’
modifier) or file register (specified by the value of
‘Ws’ or ‘f’)
(specified by a literal value or indirectly by the
contents of register ‘Wb’)
bit-oriented
INSTRUCTION SET SUMMARY
This chapter is a brief summary of the
PIC24F instruction set architecture, and is
not intended to be a comprehensive refer-
ence source.
barrel
®
shift
MCU instruction sets, while main-
instructions
instructions)
(including
have
simple
three
PIC24FJ64GA004 FAMILY
Preliminary
The literal instructions that involve data movement may
use some of the following operands:
• A literal value to be loaded into a W register or file
• The W register or file register where the literal
However, literal instructions that involve arithmetic or
logical operations use some of the following operands:
• The first source operand which is a register ‘Wb’
• The second source operand which is a literal
• The destination of the result (only if not the same
The control instructions may use some of the following
operands:
• A program memory address
• The mode of the table read and table write
All instructions are a single word, except for certain
double-word instructions, which were made dou-
ble-word instructions so that all the required informa-
tion is available in these 48 bits. In the second word, the
8 MSbs are ‘0’s. If this second word is executed as an
instruction (by itself), it will execute as a NOP.
Most single-word instructions are executed in a single
instruction cycle, unless a conditional test is true or the
program counter is changed as a result of the instruc-
tion. In these cases, the execution takes two instruction
cycles, with the additional instruction cycle(s) executed
as a NOP. Notable exceptions are the BRA (uncondi-
tional/computed branch), indirect CALL/GOTO, all table
reads and writes, and RETURN/RETFIE instructions,
which are single-word instructions but take two or three
cycles.
Certain instructions that involve skipping over the sub-
sequent instruction require either two or three cycles if
the skip is performed, depending on whether the
instruction being skipped is a single-word or two-word
instruction. Moreover, double-word moves require two
cycles. The double-word instructions execute in two
instruction cycles.
register (specified by the value of ‘k’)
value is to be loaded (specified by ‘Wb’ or ‘f’)
without any address modifier
value
as the first source operand) which is typically a
register ‘Wd’ with or without an address modifier
instructions
DS39881B-page 215
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