参数资料
型号: DSPIC30F5015-30I/PT
厂商: Microchip Technology
文件页数: 121/129页
文件大小: 0K
描述: IC DSPIC MCU/DSP 66K 64TQFP
产品培训模块: 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
标准包装: 160
系列: dsPIC™ 30F
核心处理器: dsPIC
芯体尺寸: 16-位
速度: 30 MIP
连通性: CAN,I²C,SPI,UART/USART
外围设备: 高级欠压探测/复位,电机控制 PWM,QEI,POR,PWM,WDT
输入/输出数: 52
程序存储器容量: 66KB(22K 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 16x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 64-TQFP
包装: 托盘
产品目录页面: 651 (CN2011-ZH PDF)
配用: XLT64PT5-ND - SOCKET TRAN ICE 64MQFP/TQFP
AC164319-ND - MODULE SKT MPLAB PM3 64TQFP
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名称: DSPIC30F501530IPT
2008 Microchip Technology Inc.
DS70149D-page 91
dsPIC30F5015/5016
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 fil-
ter 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
configured 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
identically 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
timers 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, UDSRC (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 UDSRC = 1, the timer count direction is
controlled from the QEB pin. Likewise, when
UDSRC = 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.
14.7
QEI Module Operation During CPU
Idle Mode
Since the QEI module can function as a Quadrature
Encoder Interface, or as a 16-bit timer, the following
section describes operation of the module in both
modes.
14.7.1
QEI OPERATION DURING CPU IDLE
MODE
When the CPU is placed in the Idle mode, the QEI
module
will
operate
if
the
QEISIDL
bit
(QEICON<13>) = 0. This bit defaults to a logic ‘0’ upon
executing POR and BOR. For halting the QEI module
during the CPU Idle mode, QEISIDL should be set to ‘1’.
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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