參數(shù)資料
型號(hào): PIC24FJ128GA010-I/PT
廠商: Microchip Technology
文件頁(yè)數(shù): 183/258頁(yè)
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 128K 100TQFP
產(chǎn)品培訓(xùn)模塊: PIC24 Introduction
Graphics LCD System and PIC24 Interface
Asynchronous Stimulus
特色產(chǎn)品: PIC24FJ/33FJ MCUs & dsPIC? DSCs
標(biāo)準(zhǔn)包裝: 119
系列: PIC® 24F
核心處理器: PIC
芯體尺寸: 16-位
速度: 16MHz
連通性: I²C,PMP,SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 84
程序存儲(chǔ)器容量: 128KB(43K x 24)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 8K x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 16x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-TQFP
包裝: 托盤(pán)
配用: DM240011-ND - KIT STARTER MPLAB FOR PIC24F MCU
AC164333-ND - MODULE SKT FOR PM3 100QFP
DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
MA160011-ND - DAUGHTER BOARD PICDEM LCD 16F91X
DM240001-ND - BOARD DEMO PIC24/DSPIC33/PIC32
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PIC24FJ128GA010 FAMILY
DS39747F-page 30
2005-2012 Microchip Technology Inc.
3.3
Arithmetic Logic Unit (ALU)
The PIC24F ALU is 16 bits wide and is capable of addi-
tion, subtraction, bit shifts and logic operations. Unless
otherwise mentioned, arithmetic operations are 2’s
complement in nature. Depending on the operation, the
ALU may affect the values of the Carry (C), Zero (Z),
Negative (N), Overflow (OV) and Digit Carry (DC)
Status bits in the SR register. The C and DC Status bits
operate as Borrow and Digit Borrow bits, respectively,
for subtraction operations.
The ALU can perform 8-bit or 16-bit operations,
depending on the mode of the instruction that is used.
Data for the ALU operation can come from the W
register array, or data memory, depending on the
addressing mode of the instruction. Likewise, output
data from the ALU can be written to the W register array
or a data memory location.
The PIC24F CPU incorporates hardware support for
both multiplication and division. This includes a dedi-
cated hardware multiplier and support hardware for
16-bit divisor division.
3.3.1
MULTIPLIER
The ALU contains a high-speed, 17-bit x 17-bit
multiplier. It supports unsigned, signed or mixed sign
operation in several multiplication modes:
1.
16-bit x 16-bit signed
2.
16-bit x 16-bit unsigned
3.
16-bit signed x 5-bit (literal) unsigned
4.
16-bit unsigned x 16-bit unsigned
5.
16-bit unsigned x 5-bit (literal) unsigned
6.
16-bit unsigned x 16-bit signed
7.
8-bit unsigned x 8-bit unsigned
3.3.2
DIVIDER
The divide block supports 32-bit/16-bit and 16-bit/16-bit
signed and unsigned integer divide operation with the
following data sizes:
1.
32-bit signed/16-bit signed divide
2.
32-bit unsigned/16-bit unsigned divide
3.
16-bit signed/16-bit signed divide
4.
16-bit unsigned/16-bit unsigned divide
The quotient for all divide instructions ends up in W0
and the remainder in W1. 16-bit signed and unsigned
DIV
instructions can specify any W register for both the
16-bit divisor (Wn) and any W register (aligned) pair
(W(m+1):Wm) for the 32-bit dividend. The divide algo-
rithm takes one cycle per bit of divisor, so both
32-bit/16-bit and 16-bit/16-bit instructions take the
same number of cycles to execute.
3.3.3
MULTI-BIT SHIFT SUPPORT
The PIC24F ALU supports both single bit and
single-cycle, multi-bit arithmetic and logic shifts.
Multi-bit shifts are implemented using a shifter block,
capable of performing up to a 15-bit arithmetic right
shift, or up to a 15-bit left shift, in a single cycle. All
multi-bit shift instructions only support Register Direct
Addressing for both the operand source and result
destination.
A full summary of instructions that use the shift
operation is provided below in Table 3-2.
TABLE 3-2:
INSTRUCTIONS THAT USE THE SINGLE AND MULTI-BIT SHIFT OPERATION
Instruction
Description
ASR
Arithmetic shift right source register by one or more bits.
SL
Shift left source register by one or more bits.
LSR
Logical shift right source register by one or more bits.
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