參數(shù)資料
型號: DSPIC33FJ12GP202T-I/ML
廠商: Microchip Technology
文件頁數(shù): 44/90頁
文件大?。?/td> 0K
描述: IC DSPIC MCU/DSP 12K 28QFN
產(chǎn)品培訓模塊: Asynchronous Stimulus
標準包裝: 1,600
系列: dsPIC™ 33F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 40 MIP
連通性: I²C,IrDA,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 21
程序存儲器容量: 12KB(12K x 8)
程序存儲器類型: 閃存
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-VQFN 裸露焊盤
包裝: 帶卷 (TR)
配用: AC164336-ND - MODULE SOCKET FOR PM3 28/44QFN
DM240001-ND - BOARD DEMO PIC24/DSPIC33/PIC32
其它名稱: DSPIC33FJ12GP202T-I/MLTR
2005 Microchip Technology Inc.
Preliminary
DS70155C-page 47
dsPIC33F
11.1
Math Library
The dsPIC33F Math Library is the compiled version of
the math library that is distributed with the highly
optimized, ANSI-compliant dsPIC33F MPLAB C30 C
Compiler (SW006012). It contains advanced single and
double-precision
floating-point
arithmetic
and
trigonometric functions from the standard ‘C’ header
file (math.h). The library delivers small program code
size and data size, reduced cycles and high accuracy.
Features
The math library is callable from either MPLAB
C30 or dsPIC33F assembly language.
The functions are IEEE-754 compliant, with
signed zero, signed infinity, NaN (Not a Number)
and denormal support and operated in the “Round
to Nearest” mode.
Compatible with MPLAB ASM30 and MPLAB
LINK30, which are available at no charge from
Microchip’s web site.
Table 11-2 shows the memory usage and performance
of the Math Library. Table 11-3 lists the math functions
that are included.
TABLE 11-2:
MEMORY USAGE AND
PERFORMANCE
TABLE 11-3:
MATH FUNCTIONS
Memory Usage (bytes)(1,2)
Code size
5250
Data size
4
Performance (cycles)(1,3)
add
122
sub
124
mul
109
div
361
Rem
385
Sqrt
492
Note 1:
Results are based on using dsPIC33F
MPLAB C30 C Compiler (SW006012),
version 1.20.
2:
Maximum “Memory Usage” when all
functions in the library are loaded. Most
applications will use less.
3:
Average 32-bit floating-point performance
results.
Single and Double-Precision Floating-Point Functions
Arithmetic Functions
add, subtract, multiply, divide, remainder
Root and Power Functions
pow, sqrt
Trigonometric and Hyperbolic Functions
acos, asin, atan, atan2, cos, cosh, sin, sinh, tan, tanh
Logarithmic and Exponential Functions
exp, log, log10, frexp, ldexp
Rounding Functions
ceil, floor
Absolute Value Functions
fabs
Modular Arithmetic Functions
fmod, modf
Comparison and Conversions
comparison, integer and floating-point conversions
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