參數(shù)資料
型號： DSPIC30F3012-30I/P
廠商： Microchip Technology
文件頁數(shù)： 105/161頁
文件大?。?/td> 0K
描述： IC DSPIC MCU/DSP 24K 18DIP
產(chǎn)品培訓(xùn)模塊： 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
標(biāo)準(zhǔn)包裝： 25
系列： dsPIC™ 30F
核心處理器： dsPIC
芯體尺寸： 16-位
速度： 30 MIP
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 12
程序存儲器容量： 24KB（8K x 24）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量： 2K x 8
電壓 - 電源 (Vcc/Vdd)： 2.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 18-DIP（0.300"，7.62mm）
包裝： 管件
產(chǎn)品目錄頁面： 651 (CN2011-ZH PDF)
配用： AC30F005-ND - MODULE SCKT DSPIC30F 18DIP/SOIC
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
ACICE0202-ND - ADAPTER MPLABICE 18P 300 MIL
其它名稱： DSPIC30F3012-30IP
2010 Microchip Technology Inc.
DS70139G-page 33
dsPIC30F2011/2012/3012/3013
FIGURE 3-4:
PROGRAM DATA TABLE ACCESS (MSB)
3.1.2
DATA ACCESS FROM PROGRAM
MEMORY USING PROGRAM SPACE
VISIBILITY
The upper 32 Kbytes of data space may optionally be
mapped into any 16K word program space page. This
provides transparent access of stored constant data
from X data space without the need to use special
instructions (i.e., TBLRDL/H, TBLWTL/H instructions).
Program space access through the data space occurs
if the MSb of the data space EA is set and program
space visibility is enabled by setting the PSV bit in the
Core Control register (CORCON). The functions of
CORCON
are
discussed
in
Data accesses to this area add an additional cycle to
the instruction being executed, since two program
memory fetches are required.
Note that the upper half of addressable data space is
always part of the X data space. Therefore, when a
DSP operation uses program space mapping to access
this memory region, Y data space should typically
contain state (variable) data for DSP operations,
whereas X data space should typically contain
coefficient (constant) data.
Although each data space address, 0x8000 and higher,
maps directly into a corresponding program memory
address (see Figure 3-5), only the lower 16 bits of the
24-bit program word are used to contain the data. The
upper 8 bits should be programmed to force an illegal
instruction to maintain machine robustness. Refer to
the “16-bit MCU and DSC Programmer’s Reference
Manual” (DS70157) for details on instruction encoding.
Note that by incrementing the PC by 2 for each
program memory word, the LS 15 bits of data space
addresses directly map to the LS 15 bits in the
corresponding
program
space
addresses.
The
remaining bits are provided by the Program Space
Visibility Page register, PSVPAG<7:0>, as shown in
For instructions that use PSV which are executed
outside a REPEAT loop:
The following instructions require one instruction
cycle in addition to the specified execution time:
- MAC class of instructions with data operand
prefetch
- MOV instructions
- MOV.D instructions
All other instructions require two instruction cycles
in addition to the specified execution time of the
instruction.
For instructions that use PSV which are executed
inside a REPEAT loop:
The following instances require two instruction
cycles in addition to the specified execution time
of the instruction:
- Execution in the first iteration
- Execution in the last iteration
- Execution prior to exiting the loop due to an
interrupt
- Execution upon re-entering the loop after an
interrupt is serviced
Any other iteration of the REPEAT loop allow the
instruction accessing data, using PSV, to execute
in a single cycle.
0
8
16
PC Address
0x000000
0x000002
0x000004
0x000006
23
00000000
Program Memory
‘Phantom’ Byte
(read as ‘0’)
TBLRDH.W
TBLRDH.B (Wn<0> = 1)
TBLRDH.B (Wn<0> = 0)
Note:
PSV access is temporarily disabled during
table reads/writes.
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