参数资料
型号: DSPIC30F3014-30I/ML
厂商: Microchip Technology
文件页数: 81/153页
文件大小: 0K
描述: IC DSPIC MCU/DSP 24K 44QFN
产品培训模块: Serial Communications using dsPIC30F I2C
Serial Communications using dsPIC30F SPI
Serial Communications using dsPIC30F UART
dsPIC30F 12 bit ADC - Part 2
dsPIC30F Addressing Modes - Part 1
dsPIC30F Architecture - Part 1
dsPIC30F DSP Engine & ALU
dsPIC30F Interrupts
dsPIC30F Motor Control PWM
dsPIC Timers
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
标准包装: 45
系列: dsPIC™ 30F
核心处理器: dsPIC
芯体尺寸: 16-位
速度: 30 MIP
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 30
程序存储器容量: 24KB(8K x 24)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.5 V ~ 5.5 V
数据转换器: A/D 13x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-VQFN 裸露焊盘
包装: 管件
产品目录页面: 651 (CN2011-ZH PDF)
配用: XLT44QFN2-ND - SOCKET TRAN ICE 44QFN/40DIP
AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名称: DSPIC30F301430IML
2010 Microchip Technology Inc.
DS70138G-page 33
dsPIC30F3014/4013
All byte loads into any W register are loaded into the
LSB. The MSB is not modified.
A Sign-Extend (SE) instruction is provided to allow
users to translate 8-bit signed data to 16-bit signed
values. Alternatively, for 16-bit unsigned data, users
can clear the MSB of any W register by executing a
Zero-Extend (ZE) instruction on the appropriate
address.
Although most instructions are capable of operating on
word or byte data sizes, it should be noted that some
instructions, including the DSP instructions, operate
only on words.
3.2.5
NEAR DATA SPACE
An 8-Kbyte ‘near’ data space is reserved in X address
memory space between 0x0000 and 0x1FFF, which is
directly addressable via a 13-bit absolute address field
within all memory direct instructions. The remaining X
address space and all of the Y address space is
addressable indirectly. Additionally, the whole of X data
space is addressable using MOV instructions, which
support memory direct addressing with a 16-bit
address field.
3.2.6
SOFTWARE STACK
The dsPIC DSC devices contain a software stack. W15
is used as the Stack Pointer.
The Stack Pointer always points to the first available
free word and grows from lower addresses towards
higher addresses. It pre-decrements for stack pops
and post-increments for stack pushes as shown in
Figure 3-10. Note that for a PC push during any CALL
instruction, the MSB of the PC is zero-extended before
the push, ensuring that the MSB is always clear.
There is a Stack Pointer Limit register (SPLIM) associ-
ated with the Stack Pointer. SPLIM is uninitialized at
Reset. As is the case for the Stack Pointer, SPLIM<0>
is forced to ‘0’ because all stack operations must be
word-aligned. Whenever an Effective Address (EA) is
generated, using W15 as a source or destination
pointer, the address thus generated is compared with
the value in SPLIM. If the contents of the Stack Pointer
(W15) and the SPLIM register are equal and a push
operation is performed, a stack error trap does not
occur. The stack error trap occurs on a subsequent
push operation. Thus, for example, if it is desirable to
cause a stack error trap when the stack grows beyond
address 0x2000 in RAM, initialize the SPLIM with the
value, 0x1FFE.
Similarly, a Stack Pointer underflow (stack error) trap is
generated when the Stack Pointer address is found to
be less than 0x0800, thus preventing the stack from
interfering with the Special Function Register (SFR)
space.
A write to the SPLIM register should not be immediately
followed by an indirect read operation using W15.
FIGURE 3-10:
CALL
STACK FRAME
Note:
A PC push during exception processing
concatenates the SRL register to the MSB
of the PC prior to the push.
<Free Word>
PC<15:0>
000000000
0
15
W15 (before CALL)
W15 (after CALL)
S
tac
k
G
row
s
T
o
w
a
rd
s
Highe
rA
ddr
es
s
0x0000
PC<22:16>
POP
: [--W15]
PUSH : [W15++]
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