DSPIC30F6014AT-20E/PF Microchip Technology, DSPIC30F6014AT-20E/PF Datasheet - Page 87

• Manufacturer Part Number: DSPIC30F6014AT-20E/PF
• Description: 16-bit MCU/DSP 30MIPS 144KB 80 TQFP 14x14x1mm T/R
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F6014AT-20E/PF

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: AC'97, Brown-out Detect/Reset, I²S, LVD, POR, PWM, WDT
• Number Of I /o: 68
• Program Memory Size: 144KB (48K x 24)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 16x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM300024 - KIT DEMO DSPICDEM 1.1DM300019 - BOARD DEMO DSPICDEM 80L STARTERDM300004-2 - BOARD DEMO DSPICDEM.NET 2DM300004-1 - BOARD DEMO DSPICDEM.NET 1AC164314 - MODULE SKT FOR PM3 80PFAC30F001 - MODULE SOCKET DSPIC30F 80TQFPXLT80PT2 - SOCKET TRANSITION ICE 80TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

13.4.2
The PWM period is specified by writing to the PRx
register. The PWM period can be calculated using
Equation
EQUATION 13-1:
PWM frequency is defined as 1/[PWM period].
FIGURE 13-2:
© 2011 Microchip Technology Inc.
PWM period = [(PRx) + 1] • 4 • T
13-1.
PWM PERIOD
OCxR = OCxRS
(Interrupt Flag)
TMR3 = PR3
T3IF = 1
(TMRx prescale value)
dsPIC30F6011A/6012A/6013A/6014A
PWM OUTPUT TIMING
Duty Cycle
OSC
Period
TMR3 = Duty Cycle
•
(OCxR)
OCxR = OCxRS
(Interrupt Flag)
TMR3 = PR3
T3IF = 1
When the selected TMRx is equal to its respective
period register, PRx, the following four events occur on
the next increment cycle:
• TMRx is cleared
• The OCx pin is set
• The PWM duty cycle is latched from OCxRS into
• The corresponding timer interrupt flag is set
See
Timer3 is referred to in
- Exception 1: If PWM duty cycle is 0x0000,
- Exception 2: If duty cycle is greater than PRx,
OCxR
TMR3 = Duty Cycle
the OCx pin will remain low
the pin will remain high
Figure 13-2
(OCxR)
for key PWM period comparisons.
Figure 13-2
for clarity.
DS70143E-page 87