參數(shù)資料
型號: DSPIC30F4012-20I/SO
廠商: Microchip Technology
文件頁數(shù): 232/238頁
文件大小: 0K
描述: IC DSPIC MCU/DSP 48K 28SOIC
產(chǎn)品培訓模塊: dsPIC30F Quadrature Encoder Interface
Serial Communications using dsPIC30F CAN
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
標準包裝: 27
系列: dsPIC™ 30F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 20 MIPS
連通性: CAN,I²C,SPI,UART/USART
外圍設備: 高級欠壓探測/復位,電機控制 PWM,QEI,POR,PWM,WDT
輸入/輸出數(shù): 20
程序存儲器容量: 48KB(16K 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 6x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
包裝: 管件
配用: XLT28SO-1-ND - SOCKET TRANSITION 28SOIC 300MIL
其它名稱: DSPIC30F401220ISO
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2010 Microchip Technology Inc.
DS70135G-page 93
dsPIC30F4011/4012
14.3
Position Measurement Mode
There are two Measurement modes which are sup-
ported and are termed x2 and x4. These modes are
selected by the QEIM<2:0> (QEICON<10:8>) mode
select bits.
When control bits, QEIM<2:0> = 100 or 101, the x2
Measurement mode is selected and the QEI logic only
looks at the Phase A input for the position counter
increment rate. Every rising and falling edge of the
Phase A signal causes the position counter to be incre-
mented or decremented. The Phase B signal is still
utilized for the determination of the counter direction
just as in the x4 mode.
Within the x2 Measurement mode, there are two
variations of how the position counter is reset:
1.
Position counter reset by detection of index
pulse, QEIM<2:0> = 100.
2.
Position counter reset by match with MAXCNT,
QEIM<2:0> = 101.
When control bits, QEIM<2:0> = 110 or 111, the x4
Measurement mode is selected and the QEI logic looks
at both edges of the Phase A and Phase B input sig-
nals. Every edge of both signals causes the position
counter to increment or decrement.
Within the x4 Measurement mode, there are two
variations of how the position counter is reset:
1.
Position counter reset by detection of index
pulse, QEIM<2:0> = 110.
2.
Position counter reset by match with MAXCNT,
QEIM<2:0> = 111.
The x4 Measurement mode provides for finer resolu-
tion data (more position counts) for determining motor
position.
14.4
Programmable Digital Noise
Filters
The digital noise filter section is responsible for
rejecting noise on the incoming quadrature signals.
Schmitt Trigger inputs and a three-clock cycle delay
filter combine to reject low-level noise and large, short
duration, noise spikes that typically occur in noise
prone applications, such as a motor system.
The filter ensures that the filtered output signal is not
permitted to change until a stable value has been
registered for three consecutive clock cycles.
For the QEA, QEB and INDX pins, the clock divide
frequency for the digital filter is programmed by bits
QECK<2:0> (DFLTCON<6:4>) and are derived from
the base instruction cycle TCY.
To enable the filter output for channels QEA, QEB and
INDX, the QEOUT bit must be ‘1’. The filter network for
all channels is disabled on POR and BOR.
14.5
Alternate 16-bit Timer/Counter
When the QEI module is not configured for the QEI
mode, QEIM<2:0> = 001, the module can be config-
ured as a simple 16-bit timer/counter. The setup and
control of the auxiliary timer is accomplished through
the QEICON SFR register. This timer functions identi-
cally to Timer1. The QEA pin is used as the timer clock
input.
When configured as a timer, the POSCNT register
serves as the Timer Count register and the MAXCNT
register serves as the Period register. When a Timer/
Period register match occurs, the QEI interrupt flag will
be asserted.
The only exception between the general purpose tim-
ers and this timer is the added feature of external up/
down input select. When the UPDN pin is asserted
high, the timer will increment up. When the UPDN pin
is asserted low, the timer will be decremented.
The UPDN control/status bit (QEICON<11>) can be
used to select the count direction state of the Timer
register. When UPDN = 1, the timer will count up. When
UPDN = 0, the timer will count down.
In addition, control bit, UPDN_SRC (QEICON<0>),
determines whether the timer count direction state is
based on the logic state written into the UPDN control/
status bit (QEICON<11>) or the QEB pin state. When
UPDN_SRC = 1, the timer count direction is controlled
from the QEB pin. Likewise, when UPDN_SRC = 0, the
timer count direction is controlled by the UPDN bit.
14.6
QEI Module Operation During CPU
Sleep Mode
14.6.1
QEI OPERATION DURING CPU
SLEEP MODE
The QEI module will be halted during the CPU Sleep
mode.
14.6.2
TIMER OPERATION DURING CPU
SLEEP MODE
During CPU Sleep mode, the timer will not operate
because the internal clocks are disabled.
Note:
Changing the operational mode (i.e., from
QEI to timer or vice versa) will not affect the
Timer/Position Count register contents.
Note:
This timer does not support the External
Asynchronous Counter mode of operation.
If using an external clock source, the clock
will automatically be synchronized to the
internal instruction cycle.
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DSPIC30F4012-30I/ML 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC Motor Control RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
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DSPIC30F4012-30I/SO 制造商:Microchip Technology Inc 功能描述:16- Bit Digital Signal Controller Memory
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DSPIC30F4012-30I/SP 制造商:Microchip Technology Inc 功能描述:16- Bit Digital Signal Controller Memory