PIC18F46J50 FULL-SPEED USB
DEMONSTRATION BOARD
USER ’S GUIDE
Chapter 2. Board Hardware
The PIC18F46J50 Full-Speed USB Demonstration Board can be used as a
stand-alone device or — for additional functionality — plugged into either the PIC18
Explorer Board ( www.microchipDIRECT.com ) or PICDEM HPC Explorer Board
( www.microchipDIRECT.com ).
When used alone, the board contains all of the hardware necessary to make a USB
compliant, full-speed peripheral device. The board also has additional hardware
elements for providing basic demonstration and development capability.
The additional elements include the following, with the element’s number indicating its
location on the board in Figure 2-1:
1. Two miniature SMT red LEDs – Connected to the RE0 and RE1 I/O pins
2. 5V to 3.3V LDO low quiescent current regulator (TC1108-3.3VDB) – Enables
device to obtain power from USB port
3. 12 MHz SMT crystal – Can be used with the internal PLL to run the
microcontroller and USB module at frequencies of up to 48 MHz
4. MCP9701A analog output temperature sensor – Component U1, connected to
RE2 I/O pin
5. General purpose push button S2 – Connected to the RB2 I/O pin with a pull-up
resistor
6. MCLR push button – For easy Reset of the microcontroller
7. Six-pin, right-angle In-Circuit Serial Programming? (ICSP?)
programmer/debug header
8. Jumpers for current measurement (JP3) and configuration (JP2)
9. A mini-B USB connector for power and communication
? 2009 Microchip Technology Inc.
DS51806A-page 9
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