DSPIC30F2020-30I/SP Microchip Technology, DSPIC30F2020-30I/SP Datasheet - Page 127
![IC DSPIC MCU/DSP 12K 28DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
DSPIC30F2020-30I/SP
Manufacturer Part Number
DSPIC30F2020-30I/SP
Description
IC DSPIC MCU/DSP 12K 28DIP
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/SP
Package / Case
28-DIP (0.300", 7.62mm)
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
Mounting Style
Through Hole
3rd Party Development Tools
52713-733, 52714-737, 53276-922, EWDSPIC
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE4000, DM240002, DM300027, DM330011, DM300018, DM183021
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DM300023 - KIT DEMO DSPICDEM SMPS BUCKDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- 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: 127 of 286
- Download datasheet (5Mb)
FIGURE 12-13:
Normally, the Primary Time Base (PTMR) provides
synchronization control to the individual timer/counters
so they count in lock-step unison.
If the PWM phase-shift feature is used, then the PTMR
provides the synchronization signal to each individual
timer/counter that causes them to reinitialize with their
individual phase-shift values.
If a PWM generator is operating in Independent Time
Base mode, the individual timer/counters count
upward until their count values match the value stored
in their phase registers, then they reset and the cycle
repeats.
The primary time base and the individual time bases
are implemented as 13-bit counters. The timers/
counters are clocked at 120 MHz @ 30 MIPS, which
provides a frequency resolution of 8.4 nsec.
All of the timer/counters are enabled/disabled by set-
ting/clearing the PTEN bit in the PTCON SFR. The
timers are cleared when the PTEN bit is cleared in
software.
The PTPER register sets the counting period for
PTMR. The user must write a 13-bit value to
PTPER<15:3>. When the value in PTMR<15:3>
matches the value in PTPER<15:3>, the primary time
base is reset to ‘0’, and the individual time base
counters are reinitialized to their phase values (except
if in Independent Time Base mode).
12.8
PTPER holds the 13-bit value that specifies the count-
ing period for the primary PWM time base. The timer
period can be updated at any time by the user. The
PWM period can be determined from the following
formula:
Period Duration = (PTPER + 1)/120 MHz @ 30 MIPS
© 2006 Microchip Technology Inc.
15
15
PWM Period
PTPER
0
Comparator
TMRx
MUX
3
TMRx BLOCK DIAGRAM
15
13
13
1
PHASEx
Reset
>
ITBx
3
3
Clk
Preliminary
12.9
The PWM Duty cycle resolution is 1.05 nsec per LSB
@ 30 MIPS. The PWM period resolution is 8.4 nsec @
30 MIPS. Table 12-1 shows the duty cycle resolution
versus PWM frequencies for 30 MIPS execution speed.
TABLE 12-1:
TABLE 12-2:
Notice the reduction in available resolution for a given
PWM frequency is due to the reduced clock rate and
the fact that the LSB of duty cycle resolution is derived
from a fixed-delay element. At operating frequencies
below 30 MIPS, the contribution of the fixed-delay
element to the output resolution becomes less than
1 LSB.
For frequency resonant mode power conversion appli-
cations, it is desirable to know the available PWM fre-
quency resolution. The available frequency resolution
varies with the PWM frequency. The PWM time base
clocks at 120 MHz @ 30 MIPS. The following equation
provides the frequency resolution versus PWM period:
Frequency Resolution = 120 MHz/(Period)
dsPIC30F1010/202X
MIPS
MIPS
30
30
30
30
30
30
30
30
30
20
20
20
20
where Period = PTPER<15:3>
PWM Frequency and Duty Cycle
Resolution
Resolution
Resolution
PWM Duty
PWM Duty
16 bits
15 bits
14 bits
13 bits
12 bits
11 bits
10 bits
14 bits
12 bits
10 bits
Cycle
Cycle
9 bits
8 bits
AVAILABLE PWM
FREQUENCIES AND
RESOLUTIONS @ 30 MIPS
AVAILABLE PWM
FREQUENCIES AND
RESOLUTIONS @ 20 MIPS
8 bits
PWM Frequency
PWM Frequency
DS70178C-page 125
234.4 KHz
468.9 KHz
937.9 KHz
117.2 KHz
14.6 KHz
29.3 KHz
1.87 MHz
3.75 MHz
58.6 KHz
156 KHz
624 KHz
2.5 MHz
39 KHz
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