User manual

POWER SUPPLY CIRCUIT:
PIC32-PINGUINO/-OTG can take power supply from:
– external power supply (9-30) VDC.
– + 5V from USB
– 3.7 V Li-ion battery
The programmed board power consumption is about 100 mA with all peripherals
enabled.
RESET CIRCUIT:
PIC32-PINGUINO/-OTG reset circuit includes D2 (1N4148), R16 (4.7kΩ),
R19 (330Ω), C21 (4.7nF), PIC32MX440F256H pin 7 (#MCLR) and RESET button.
CLOCK CIRCUIT:
Quartz crystal Q1 8 MHz is connected to PIC32MX440F256H pin 39
(OSC1/CLKI/RC12) and pin 40 (OSC2/CLKO/RC15).
Quartz crystal Q2 32.768 kHz is connected to PIC32MX440F256H pin 47
(SOSCI/CN1/RC13) and pin 48 (SOSCO/T1CK/CN0/RC14).
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