PIC24EP64MC204-E/PT Microchip Technology, PIC24EP64MC204-E/PT Datasheet - Page 30

• Manufacturer Part Number: PIC24EP64MC204-E/PT
• Description: 16 Bit MCU, 64KB Flash, 8KB RAM, 60 MHz, 44 Pin, MCPWM,QEI, 3 OpAmp, 4 Comp, PTG
• Manufacturer: Microchip Technology

dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X, AND PIC24EPXXXGP/MC20X
2.7
If the PLL of the target device is enabled and
configured for the device start-up oscillator, the
maximum oscillator source frequency must be limited
to 3 MHz < F
start-up conditions. This means that if the external
oscillator frequency is outside this range, the
application must start-up in the FRC mode first. The
default PLL settings after a POR with an oscillator
frequency outside this range will violate the device
operating speed.
Once the device powers up, the application firmware
can initialize the PLL SFRs, CLKDIV and PLLDBF to a
suitable value, and then perform a clock switch to the
Oscillator + PLL clock source. Note that clock switching
must be enabled in the device Configuration Word.
2.8
Unused I/O pins should be configured as outputs and
driven to a logic-low state.
Alternatively, connect a 1k to 10k resistor between V
and unused pins and drive the output to logic low.
FIGURE 2-4:
DS70657F-page 30
Oscillator Value Conditions on
Device Start-up
Unused I/Os
IN
< 5.5 MHz to comply with device PLL
k
1
BOOST CONVERTER IMPLEMENTATION
ADC Channel
V
INPUT
Comparator
Op amp/
k
SS
2
dsPIC33EP
Output
I
Driver
PWM
PFC
FET
2.9
• Induction heating
• Uninterruptable Power Supplies (UPS)
• DC/AC inverters
• Compressor motor control
• Washing machine 3-phase motor control
• BLDC motor control
• Automotive HVAC, cooling fans, fuel pumps
• Stepper motor control
• Audio and fluid sensor monitoring
• Camera lens focus and stability control
• Speech (playback, hands-free kits, answering
• Consumer audio
• Industrial and building control (security systems
• Barcode reading
• Networking: LAN switches, gateways
• Data storage device management
• Smart cards and smart card readers
Examples of typical application connections are shown
in
machines, VoIP)
and access control)
Figure 2-4
Application Examples
through
 2011-2012 Microchip Technology Inc.
ADC Channel
Figure
2-8.
V
OUTPUT
k
3