DSPIC30F2020-30I/MM Microchip Technology, DSPIC30F2020-30I/MM Datasheet - Page 125
![IC DSPIC MCU/DSP 12K 28QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
DSPIC30F2020-30I/MM
Manufacturer Part Number
DSPIC30F2020-30I/MM
Description
IC DSPIC MCU/DSP 12K 28QFN
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 DSPIC30F2020-30I/MM
Core Processor
dsPIC
Core Size
16-Bit
Speed
30 MIPs
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
21
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 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-QFN
Core Frequency
15MHz
Core Supply Voltage
3.3V
Embedded Interface Type
I2C, SPI, UART
No. Of I/o's
21
Flash Memory Size
12KB
Supply Voltage Range
3V To 3.6V
Package
28QFN-S EP
Device Core
dsPIC
Family Name
dsPIC30
Maximum Speed
30 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
16 Bit
Number Of Programmable I/os
21
Interface Type
I2C/SPI/UART
On-chip Adc
8-chx10-bit
Number Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DM300023 - KIT DEMO DSPICDEM SMPS BUCKAC164322 - MODULE SOCKET MPLAB PM3 28/44QFNDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DSPIC30F2020-30I/MMB32
Manufacturer:
Microchip Technology
Quantity:
135
- 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: 125 of 286
- Download datasheet (5Mb)
12.4.7
Constant Off-Time mode is shown in Figure 12-9.
Constant Off-Time PWM is a variable-frequency mode
where the actual PWM period is less than or equal to
the specified period value. The PWM time base is
externally reset some time after the PWM signal duty
cycle value has been reached, and the PWM signal has
been deasserted. This mode is implemented by
enabling the On-Time PWM mode (Current Reset
mode) and using the complementary output.
FIGURE 12-9:
12.4.8
Current Reset PWM is shown in Figure 12-10. Current
Reset PWM uses a Variable-Frequency mode where
the actual PWM period is less than or equal to the spec-
ified period value. The PWM time base is externally
reset some time after the PWM signal duty cycle value
has been reached and the PWM signal has been deas-
serted. Current Reset PWM is a constant on-time PWM
mode.
FIGURE 12-10:
© 2006 Microchip Technology Inc.
Period
Value
Period
Value
PWML
PWMH
0
0
Note: Duty Cycle represents off time
External Timer Reset
External Timer Reset
Timer
Value
Actual Period
Duty Cycle
Timer
Value
Programmed Period
Duty Cycle
CONSTANT OFF-TIME PWM
CURRENT RESET PWM MODE
Actual Period
Programmed Period
Programmed Period
CONSTANT OFF-TIME
PWM
CURRENT RESET PWM
Duty Cycle
Duty Cycle
External Timer Reset
External Timer Reset
Preliminary
Typically, in the converter application, an energy stor-
age inductor is charged with current while the PWM
signal is asserted, and the inductor current is dis-
charged by the load when the PWM signal is deas-
serted. In this application of current reset PWM, an
external current measurement circuit determines when
the inductor is discharged, and then generates a signal
that the PWM module uses to reset the time base
counter. In Current Reset mode, complementary
outputs are available.
12.4.9
Independent
Figure 12-11, is often used when the dsPIC DSC is
controlling different power converter subcircuits such
as the Power Factor Correction circuit, which may use
100 kHz PWM, and the full-bridge forward converter
section may use 250 kHz PWM.
FIGURE 12-11:
PWM1H
PWM2H
PWM3H
PWM4H
dsPIC30F1010/202X
Note:
INDEPENDENT TIME BASE PWM
Duty Cycle
Duty Cycle
Duty Cycle
Time
Period 1
With independent time bases,
PWM signals are no longer
phase related to each other.
Duty Cycle
Base
INDEPENDENT TIME
BASE PWM
Period 2
Period 3
PWM,
Period 4
DS70178C-page 123
as
shown
in
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