DSPIC33FJ128MC804-H/ML Microchip Technology, DSPIC33FJ128MC804-H/ML Datasheet - Page 146

• Manufacturer Part Number: DSPIC33FJ128MC804-H/ML
• Description: 16-bit DSC, 128KB Flash, Motor, CAN, DMA, 40 MIPS, NanoWatt 44 QFN 8x8x0.9mm TUB
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128MC804-H/ML

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 9x10b/12b, D/A 6x16b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 140°C
• Package / Case: 44-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
9.1
The dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/
X04 and dsPIC33FJ128MCX02/X04 devices provide
seven system clock options:
• Fast RC (FRC) Oscillator
• FRC Oscillator with Phase Locked Loop (PLL)
• Primary (XT, HS or EC) Oscillator
• Primary Oscillator with PLL
• Secondary (LP) Oscillator
• Low-Power RC (LPRC) Oscillator
• FRC Oscillator with postscaler
9.1.1
The Fast RC (FRC) internal oscillator runs at a nominal
frequency of 7.37 MHz. User software can tune the
FRC frequency. User software can optionally specify a
factor (ranging from 1:2 to 1:256) by which the FRC
clock frequency is divided. This factor is selected using
the FRCDIV<2:0> (CLKDIV<10:8>) bits.
The primary oscillator can use one of the following as
its clock source:
• Crystal (XT): Crystals and ceramic resonators in
• High-Speed Crystal (HS): Crystals in the range of
• External Clock (EC): External clock signal is
The secondary (LP) oscillator is designed for low power
and uses a 32.768 kHz crystal or ceramic resonator.
The LP oscillator uses the SOSCI and SOSCO pins.
The Low-Power RC (LPRC) internal oscIllator runs at a
nominal frequency of 32.768 kHz. It is also used as a
reference clock by the Watchdog Timer (WDT) and
Fail-Safe Clock Monitor (FSCM).
The clock signals generated by the FRC and primary
oscillators can be optionally applied to an on-chip PLL
to provide a wide range of output frequencies for device
operation.
Section 9.1.4 “PLL
The FRC frequency depends on the FRC accuracy
(see
Tuning register (see
DS70291E-page 146
the range of 3 MHz to 10 MHz. The crystal is
connected to the OSC1 and OSC2 pins.
10 MHz to 40 MHz. The crystal is connected to
the OSC1 and OSC2 pins.
directly applied to the OSC1 pin.
Table
CPU Clocking System
31-19) and the value of the FRC Oscillator
SYSTEM CLOCK SOURCES
PLL
configuration
Configuration”.
Register
9-4).
is
described
in
9.1.2
The oscillator source used at a device Power-on
Reset event is selected using Configuration bit
settings. The oscillator Configuration bit settings are
located in the Configuration registers in the program
memory. (Refer to
Bits”
Selection
(FOSCSEL<2:0>), and the Primary Oscillator Mode
Select
(FOSC<1:0>), select the oscillator source that is used
at a Power-on Reset. The FRC primary oscillator is
the default (unprogrammed) selection.
The Configuration bits allow users to choose among 12
different clock modes, shown in
The output of the oscillator (or the output of the PLL
if a PLL mode has been selected) F
2 to generate the device instruction clock (F
the peripheral clock time base (F
operating speed of the device, and speeds up to 40
MHz are supported by the dsPIC33FJ32MC302/304,
dsPIC33FJ64MCX02/X04
dsPIC33FJ128MCX02/X04 architecture.
Instruction execution speed or device operating
frequency, F
EQUATION 9-1:
9.1.3
The Auxiliary Oscillator (AOSC) can be used for periph-
eral that needs to operate at a frequency unrelated to
the system clock such as DAC.
The Auxiliary Oscillator can use one of the following as
its clock source:
• Crystal (XT): Crystal and ceramic resonators in
• High-Speed Crystal (HS): Crystals in the range of
• External Clock (EC): External clock signal up to
the range of 3 Mhz to 10 Mhz. The crystal is con-
nected to the SOCI and SOSCO pins.
10 to 40 Hz. The crystal is connected to the
SOSCI and SOSCO pins.
64 Mhz. The external clock signal is directly
applied to SOSCI pin.
for further details.) The Initial Oscillator
Configuration
SYSTEM CLOCK SELECTION
AUXILIARY OSCILLATOR
CY
Configuration
, is given by:
F
CY
DEVICE OPERATING
FREQUENCY
Section 28.1 “Configuration
© 2011 Microchip Technology Inc.
=
F
-------------
bits,
OSC
2
bits,
Table
P
). F
OSC
9-1.
POSCMD<1:0>
CY
FNOSC<2:0>
is divided by
defines the
CY
) and
and