- 您现在的位置：买卖IC网 > PDF目录17016 > MA330011 (Microchip Technology)MODULE DSPIC33 100P TO 100QFP PDF资料下载
参数资料
| 型号： | MA330011 |
| 厂商： | Microchip Technology |
| 文件页数： | 89/199页 |
| 文件大小： | 0K |
| 描述： | MODULE DSPIC33 100P TO 100QFP |
| 标准包装： | 1 |
| 附件类型： | 插拔式模块（PIM）- dsPIC33FJ256GP710 |
| 适用于相关产品： | Explorer 16（DM240001 或 DM240002） |
| 产品目录页面： | 658 (CN2011-ZH PDF) |
| 相关产品： | DSPIC33FJ64GP710T-I/PT-ND - IC DSPIC MCU/DSP 64K 100TQFP DSPIC33FJ64GP710T-I/PF-ND - IC DSPIC MCU/DSP 64K 100TQFP DSPIC33FJ64GP310T-I/PT-ND - IC DSPIC MCU/DSP 64K 100TQFP DSPIC33FJ64GP310T-I/PF-ND - IC DSPIC MCU/DSP 64K 100TQFP DSPIC33FJ256GP510T-I/PT-ND - IC DSPIC MCU/DSP 256K 100TQFP DSPIC33FJ256GP510T-I/PF-ND - IC DSPIC MCU/DSP 256K 100TQFP DSPIC33FJ128GP310T-I/PT-ND - IC DSPIC MCU/DSP 128K 100TQFP DSPIC33FJ128GP310T-I/PF-ND - IC DSPIC MCU/DSP 128K 100TQFP DSPIC33FJ256GP710T-I/PT-ND - IC DSPIC MCU/DSP 256K 100TQFP DSPIC33FJ256GP710T-I/PF-ND - IC DSPIC MCU/DSP 128K 100TQFP 更多... |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页当前第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页第189页第190页第191页第192页第193页第194页第195页第196页第197页第198页第199页
2007 Microchip Technology Inc.
Preliminary
DS70165E-page 177
dsPIC33F
15.1
PWM Time Base
The PWM time base is provided by a 15-bit timer with
a prescaler and postscaler. The time base is accessible
via the PTMR SFR. PTMR<15> is a read-only status
bit, PTDIR, that indicates the present count direction of
the PWM time base. If PTDIR is cleared, PTMR is
counting upwards. If PTDIR is set, PTMR is counting
downwards. The PWM time base is configured via the
PTCON SFR. The time base is enabled/disabled by
setting/clearing the PTEN bit in the PTCON SFR.
PTMR is not cleared when the PTEN bit is cleared in
software.
The PTPER SFR sets the counting period for PTMR.
The user must write a 15-bit value to PTPER<14:0>.
When the value in PTMR<14:0> matches the value in
PTPER<14:0>, the time base will either reset to ‘0’ or
reverse the count direction on the next occurring clock
cycle. The action taken depends on the operating
mode of the time base.
The PWM time base can be configured for four different
modes of operation:
Free-Running mode
Single-Shot mode
Continuous Up/Down Count mode
Continuous Up/Down Count mode with interrupts
for double updates
These four modes are selected by the PTMOD<1:0>
bits in the PTCON SFR. The Up/Down Count modes
support center-aligned PWM generation. The Single-
Shot mode allows the PWM module to support pulse
control of certain Electronically Commutative Motors
(ECMs).
The interrupt signals generated by the PWM time base
depend on the mode selection bits (PTMOD<1:0>) and
the postscaler bits (PTOPS<3:0>) in the PTCON SFR.
15.1.1
FREE-RUNNING MODE
In Free-Running mode, the PWM time base counts
upwards until the value in the PWM Time Base Period
register (PTPER) is matched. The PTMR register is
reset on the following input clock edge, and the time
base will continue to count upwards as long as the
PTEN bit remains set.
When the PWM time base is in the Free-Running mode
(PTMOD<1:0> = 00), an interrupt event is generated
each time a match with the PTPER register occurs and
the PTMR register is reset to zero. The postscaler
selection bits may be used in this mode of the timer to
reduce the frequency of the interrupt events.
15.1.2
SINGLE-SHOT MODE
In Single-Shot mode, the PWM time base begins
counting upwards when the PTEN bit is set. When the
value in the PTMR register matches the PTPER regis-
ter, the PTMR register will be reset on the following
input clock edge, and the PTEN bit will be cleared by
the hardware to halt the time base.
When the PWM time base is in the Single-Shot mode
(PTMOD<1:0> = 01), an interrupt event is generated
when a match with the PTPER register occurs. The
PTMR register is reset to zero on the following input
clock edge and the PTEN bit is cleared. The postscaler
selection bits have no effect in this mode of the timer.
15.1.3
CONTINUOUS UP/DOWN COUNT
MODES
In the Continuous Up/Down Count modes, the PWM
time base counts upwards until the value in the PTPER
register is matched. The timer will begin counting
downwards on the following input clock edge. The
PTDIR bit in the PTMR SFR is read-only and indicates
the counting direction. The PTDIR bit is set when the
timer counts downwards.
In the Up/Down Count mode (PTMOD<1:0> = 10), an
interrupt event is generated each time the value of the
PTMR register becomes zero and the PWM time base
begins to count upwards. The postscaler selection bits
may be used in this mode of the timer to reduce the
frequency of the interrupt events.
Note:
If the PWM Period register is set to
0x0000, the timer will stop counting and
the interrupt and Special Event Trigger will
not be generated, even if the special event
value is also 0x0000. The module will not
update the PWM Period register if it is
already at 0x0000; therefore, the user
must disable the module in order to update
the PWM Period register.
相关PDF资料 |
PDF描述 |
|---|---|
| MA320001 | MODULE PLUG-IN PIC32 100QFP |
| RBM08DRMT-S288 | CONN EDGECARD 16POS .156 EXTEND |
| GSM12DTKN-S288 | CONN EDGECARD 24POS .156 EXTEND |
| AC002021 | CABLE MPLAB PM3 ICSP |
| GSM12DTKH-S288 | CONN EDGECARD 24POS .156 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MA330011 | 制造商:Microchip Technology Inc 功能描述:dsPIC33 GP 100P to 100P TQFP Plug-In Mod |
| MA330012 | 功能描述:子卡和OEM板 dsPIC33F GP 100P to 84P Plug In Module RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA330013 | 功能描述:子卡和OEM板 dsPIC33F Plug In Module RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA330014 | 功能描述:子卡和OEM板 dsPIC33 MC RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA330015 | 功能描述:子卡和OEM板 dsPIC33 GP RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
发布紧急采购，3分钟左右您将得到回复。