DSPIC30F3011-30I/PT Microchip Technology, DSPIC30F3011-30I/PT Datasheet - Page 100

• Manufacturer Part Number: DSPIC30F3011-30I/PT
• Description: IC DSPIC MCU/DSP 24K 44TQFP
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F3011-30I/PT

• Program Memory Type: FLASH
• Program Memory Size: 24KB (8K x 24)
• Package / Case: 44-TQFP, 44-VQFP
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 30 MIPs
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 30
• Eeprom Size: 1K x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Product: DSCs
• Data Bus Width: 16 bit
• Processor Series: DSPIC30F
• Core: dsPIC
• Maximum Clock Frequency: 30 MHz
• Data Ram Size: 1024 B
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52713-733, 52714-737, 53276-922, EWDSPIC
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE4000, DM240002, DM330011, DM300018
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT80PT3 - SOCKET TRAN ICE 80MQFP/TQFPAC30F006 - MODULE SKT FOR DSPIC30F 44TQFPAC164305 - MODULE SKT FOR PM3 44TQFPDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: DSPIC30F301130IPT

dsPIC30F3010/3011
15.1.4
In the Double-Update mode (PTMOD<1:0> = 11), an
interrupt event is generated each time the PTMR regis-
ter is equal to zero, as well as each time a period match
occurs. The postscaler selection bits have no effect in
this mode of the timer.
The Double-Update mode provides two additional
functions to the user. First, the control loop bandwidth
is doubled because the PWM duty cycles can be
updated, twice per period. Second, asymmetrical
center-aligned PWM waveforms can be generated,
which are useful for minimizing output waveform
distortion in certain motor control applications.
15.1.5
The input clock to PTMR (F
options of 1:1, 1:4, 1:16, or 1:64, selected by control
bits, PTCKPS<1:0> in the PTCON SFR. The prescaler
counter is cleared when any of the following occurs:
• A write to the PTMR register
• A write to the PTCON register
• Any device Reset
The PTMR register is not cleared when PTCON is
written.
15.1.6
The match output of PTMR can optionally be post-
scaled through a 4-bit postscaler (which gives a 1:1 to
1:16 scaling).
The postscaler counter is cleared when any of the
following occurs:
• A write to the PTMR register
• A write to the PTCON register
• Any device Reset
The PTMR register is not cleared when the PTCON
register is written.
DS70141F-page 100
Note:
DOUBLE-UPDATE MODE
Programming a value of 0x0001 in the
Period register could generate a continu-
ous interrupt pulse, and hence, must be
avoided.
PWM TIME BASE PRESCALER
PWM TIME BASE POSTSCALER
OSC
/4), has prescaler
15.2
PTPER is a 15-bit register and is used to set the
counting period for the PWM time base. PTPER is a
double- buffered register. The PTPER buffer contents
are loaded into the PTPER register at the following
instances:
• Free-Running and Single-Shot modes: When the
• Continuous Up/Down Count modes: When the
The value held in the PTPER buffer is automatically
loaded into the PTPER register when the PWM time
base is disabled (PTEN = 0).
The
Equation
EQUATION 15-1:
If the PWM time base is configured for one of the
Continuous Up/Down Count modes, the PWM period is
given by
EQUATION 15-2:
The maximum resolution (in bits) for a given device
oscillator and PWM frequency can be determined using
Equation
EQUATION 15-3:
T
T
PTMR register is reset to zero after a match with
the PTPER register.
PTMR register is zero.
PWM
PWM
PWM
= T
= T
Resolution =
PWM Period
Equation
15-1:
15-3:
CY
CY
•
•
period
2
(PTPER + 1)
•
(PTPER + 1)
15-2.
PWM PERIOD
(FREE-RUNNING MODE)
PWM PERIOD (UP/DOWN
COUNTING MODE)
PWM RESOLUTION
can
© 2010 Microchip Technology Inc.
log (2
•
log (2)
be
•
PTMR Prescale Value
•
T
PTMR Prescale Value
PWM
determined
/ T
CY
)
using