DSPIC30F2020-20E/MM Microchip Technology, DSPIC30F2020-20E/MM Datasheet - Page 8

• Manufacturer Part Number: DSPIC30F2020-20E/MM
• Description: 12KB, Flash, 512bytes-RAM, 30MIPS, 21I/O, 16-bit Family,nanoWatt 28 QFN-S 6x6mm
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F2020-20E/MM

• 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: 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 ~ 125°C
• Package / Case: 28-QFN
• Package: 28QFN-S EP
• 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: 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

dsPIC30F1010/202X
8. Module: PWM
9. Module: PWM
10. Module: PWM
DS80445D-page 8
In Push-Pull mode, with immediate updates
enabled, the PWM pins may become swapped.
Work around
If using the PWM module in Push-Pull mode,
immediate updates must be disabled.
Affected Silicon Revisions
The
temperatures below -20ºC. During this condition,
the PWM module will relinquish control of the
associated PWM pin and the Port I/O will
determine the state of the pin. In addition, the
PWM module will stop generating the ADC trigger
before the module relinquishes control of the PWM
pins.
Work around
None.
Affected Silicon Revisions
The outputs of the PWM module may exhibit a
jitter proportional to the speed of operation of the
device. The jitter may be observed as a deviation
in the PWM period, duty cycle or phase, and may
be affected independently of each other. As a
result, the maximum deviation exhibited on the
PWM output pin at 30 MIPS is 8.4 ns.
The jitter is caused by silicon process variations,
noise on the V
temperature of the dsPIC
given set of operating conditions, the maximum
jitter will be the same for all three parameters, and
independent of each other.
A1
A1
X
X
PWM
A2
A2
X
X
A3
A3
module
X
DD
rail and the operating
may
®
DSC. However, for a
not
operate
at
TABLE 3:
EQUATION 2:
EQUATION 3:
Speed of Operation
Table 3 shows the maximum jitter that may be
exhibited at various operating speeds.
The maximum jitter at any operating speed can
be determined using Equation 2.
Where:
• S is the speed of operation in MIPS.
The maximum percentage error observed on the
PWM output can be calculated using Equation 3.
Where:
• x
• x
Work around
Operate the power supply PWM module so that
the percentage error in the parameter of interest
(from Equation 3) is within permissible limits of the
application.
Affected Silicon Revisions
Error (%)
Maximum jitter observed (ns)
A1
interest (PWM period, duty cycle or phase).
parameter of interest (PWM period, duty cycle
or phase).
X
observed
programmed
30 MIPS
20 MIPS
15 MIPS
A2
X
=
is the observed value of parameter of
±
is the programmed value of
A3
(
-------------------------------------------------------------- -
X
x
programmed
© 2010 Microchip Technology Inc.
x
programmed
Maximum Jitter on
–
x
PWM Output
observed
12.6 ns
16.8 ns
8.4 ns
=
252
-------- -
S ( )
)
⋅
100