DSPIC30F2023-20E/PT Microchip Technology, DSPIC30F2023-20E/PT Datasheet - Page 123
DSPIC30F2023-20E/PT
Manufacturer Part Number
DSPIC30F2023-20E/PT
Description
12KB, Flash, 512bytes-RAM, 30MIPS, 35I/O, 16-bit Family,nanoWatt 44 TQFP 10x10x1
Manufacturer
Microchip Technology
Series
dsPIC™ 30Fr
Datasheets
1.AC164335.pdf
(286 pages)
2.DM300023.pdf
(22 pages)
3.DM300023.pdf
(18 pages)
4.DSPIC30F2011-20ISO.pdf
(66 pages)
5.DSPIC30F2011-20IP.pdf
(26 pages)
6.DSPIC30F1010-30ISO.pdf
(26 pages)
7.DSPIC30F1010-30ISO.pdf
(50 pages)
Specifications of DSPIC30F2023-20E/PT
Core Processor
dsPIC
Core Size
16-Bit
Speed
20 MIPS
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
12KB (4K x 24)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Package
44TQFP
Device Core
dsPIC
Family Name
dsPIC30
Maximum Speed
20 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
16 Bit
Number Of Programmable I/os
35
Interface Type
I2C/SPI/UART
On-chip Adc
12-chx10-bit
Number Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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- AC164335 PDF datasheet
- DM300023 PDF datasheet #2
- DM300023 PDF datasheet #3
- DSPIC30F2011-20ISO PDF datasheet #4
- DSPIC30F2011-20IP PDF datasheet #5
- DSPIC30F1010-30ISO PDF datasheet #6
- DSPIC30F1010-30ISO PDF datasheet #7
- Current page: 123 of 286
- Download datasheet (5Mb)
12.4
The PS PWM module is a very high-speed design that
provides capabilities not found in other PWM genera-
tors. The module supports these PWM modes:
• Standard Edge-Aligned PWM mode
• Complementary PWM mode
• Push-Pull PWM mode
• Multi-Phase PWM mode
• Variable Phase PWM mode
• Current-Limit PWM mode
• Constant Off-time PWM mode
• Current Reset PWM mode
• Independent Time Base PWM mode
12.4.1
Standard Edge-Aligned mode (Figure 12-3) is the basic
PWM mode used by many power converter topologies
such as “Buck”, “Boost” and “Forward”. To create the
edge-aligned PWM, a timer/counter circuit counts
upward from zero to a specified maximum value for the
Period. Another register contains the value for Duty
Cycle, which is constantly compared to the timer
(Period) value. While the timer/counter value is less
than or equal to the duty cycle value, the PWM output
signal is asserted. When the timer value exceeds the
duty cycle value, the PWM signal is deasserted. When
the timer is greater than the period value, the timer is
reset, and the process repeats.
FIGURE 12-3:
© 2006 Microchip Technology Inc.
Period
Value
PWMH
0
Module Functionality
Timer
Value
STANDARD EDGE-ALIGNED PWM
MODE
Duty Cycle Match
Duty Cycle
Period
EDGE-ALIGNED PWM
Timer Resets
Preliminary
12.4.2
Complementary PWM is generated in a manner similar
to standard Edge-Aligned PWM. Complementary mode
provides a second PWM output signal on the PWML
pin that is the complement of the primary PWM signal
(PWMH). Complementary mode PWM is shown in
Figure 12-4.
FIGURE 12-4:
12.4.3
The Push-Pull mode shown in Figure 12-5 is a version
of the standard Edge-Aligned PWM mode where the
active PWM signal is alternately outputted on one of
two PWM pins. There is no complementary PWM out-
put available. This mode is useful in transformer-based
power converters. Transformer-based circuits must
avoid any direct currents that will cause their cores to
saturate. The Push-Pull mode ensures that the duty
cycle of the two phases is identical, thus yielding a net
DC bias of zero.
FIGURE 12-5:
Period
Value
Period
Value
dsPIC30F1010/202X
PWMH
PWML
PWMH
PWML
0
0
Duty Cycle Match
Duty Cycle Match
Duty Cycle
Timer
Value
Timer
Value
COMPLEMENTARY PWM MODE
PUSH-PULL PWM MODE
Duty Cycle
Period
Period
COMPLEMENTARY PWM
PUSH-PULL PWM
Timer Resets
Timer Resets
(Period)-(Duty Cycle)
Duty Cycle
DS70178C-page 121
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