DSPIC30F5015-30I/PT Microchip Technology Inc., DSPIC30F5015-30I/PT Datasheet - Page 87
DSPIC30F5015-30I/PT
Manufacturer Part Number
DSPIC30F5015-30I/PT
Description
DSP, 16-Bit, 66 KB Flash, 2KB RAM, 52 I/O, TQFP-64
Manufacturer
Microchip Technology Inc.
Type
DSPr
Datasheet
1.DSPIC30F5015-30IPT.pdf
(230 pages)
Specifications of DSPIC30F5015-30I/PT
A/d Inputs
16-Channels, 10-Bit
Cpu Speed
30 MIPS
Eeprom Memory
1K Bytes
Input Output
52
Interface
CAN, I2C, SPI, UART/USART
Ios
52
Memory Type
Flash
Number Of Bits
16
Package Type
64-pin TQFP
Programmable Memory
66K Bytes
Ram Size
2K Bytes
Timers
5-16-bit, 2-32-bit
Voltage, Range
2.5-5.5
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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13.4.2
The PWM period is specified by writing to the PRx
register. The PWM period can be calculated using
Equation 13-1.
EQUATION 13-1:
PWM frequency is defined as 1/[PWM period].
FIGURE 13-1:
13.5
When the CPU enters the Sleep mode, all internal
clocks are stopped. Therefore, when the CPU enters
the Sleep state, the output compare channel will drive
the pin to the active state that was observed prior to
entering the CPU Sleep state.
For example, if the pin was high when the CPU
entered the Sleep state, the pin will remain high. Like-
wise, if the pin was low when the CPU entered the
Sleep state, the pin will remain low. In either case, the
output compare module will resume operation when
the device wakes up.
13.6
When the CPU enters the Idle mode, the output
compare module can operate with full functionality.
The output compare channel will operate during the
CPU Idle mode if the OCSIDL bit (OCxCON<13>) is at
logic ‘0’ and the selected time base (Timer2 or Timer3)
is enabled and the TSIDL bit of the selected timer is
set to logic ‘0’.
© 2007 Microchip Technology Inc.
PWM Period = [(PRx) + 1] • 4 • T
Output Compare Operation During
CPU Sleep Mode
Output Compare Operation During
CPU Idle Mode
PWM PERIOD
OCxR = OCxRS
TMR3 = PR3
(Interrupt Flag)
T3IF = 1
PWM PERIOD
(TMRx Prescale Value)
PWM OUTPUT TIMING
Duty Cycle
TMR3 = Duty Cycle (OCxR)
OSC
Period
•
OCxR = OCxRS
TMR3 = PR3
(Interrupt Flag)
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 Figure 13-1 for key PWM period comparisons.
Timer3 is referred to in the figure for clarity.
13.7
The output compare channels have the ability to gener-
ate an interrupt on a compare match, for whichever
match mode has been selected.
For all modes except the PWM mode, when a compare
event occurs, the respective interrupt flag (OCxIF) is
asserted and an interrupt will be generated, if enabled.
The OCxIF bit is located in the corresponding IFS
Status register and must be cleared in software. The
interrupt is enabled via the respective Compare
Interrupt
corresponding IEC Control register.
For the PWM mode, when an event occurs, the respec-
tive Timer Interrupt Flag (T2IF or T3IF) is asserted and
an interrupt will be generated, if enabled. The IF bit is
located in the IFS0 Status register and must be cleared
in software. The interrupt is enabled via the respective
Timer Interrupt Enable bit (T2IE or T3IE), located in the
IEC0 Control register. The output compare interrupt
flag is never set during the PWM mode of operation.
TMR3 = Duty Cycle (OCxR)
- Exception 1: If PWM duty cycle is 0x0000,
- Exception 2: If duty cycle is greater than PRx,
OCxR.
dsPIC30F5015/5016
the OCx pin will remain low.
the pin will remain high.
Output Compare Interrupts
Enable
(OCxIE)
bit,
DS70149C-page 85
located
in
the
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