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MPLAB STARTER KIT FOR PIC18F
USER ’S GUIDE
Chapter 4. Hardware
This chapter provides a functional overview of the MPLAB Starter Kit for PIC18F, and
identifies the major hardware components. Topics covered include:
? Application Functional Overview
? Programmer/Debugger Functional Overview
? Board Components
4.1
APPLICATION FUNCTIONAL OVERVIEW
Figure 4-1 illustrates the main functions of the starter kit:
FIGURE 4-1:
APPLICATION SIDE BLOCK DIAGRAM
PIC18F46J50
To Debugger Side
(PIC18F67J50)
ICSP?
PGC/EMUC
PGD/EMUD
MCLR
RD0:RD7
CS
R0
WR
OLED
Display
RD
Potentiometer
RA4
Push Button
Switch
RB0
RB3
RD6
RC2
MicroSD?
Card Socket
BMA150
Touch Keys
and Scroll Bar
32 kHz
Crystal
RA0:RA3
SOSCI:SOSCO
RC6
D+/D-
Accelerometer
USB mini-B
Receptacle
V BUS
3.3V LDO
Regulator
Power
LED
V DD to Debugger
The application side of the starter kit is centered on the PIC18F46J50 microcontroller,
which requires very little additional hardware to perform its tasks. The MPLAB Starter
Kit for PIC18F comes preprogrammed with a MicroSD bootloader that has the ability to
load, program and run precompiled applications from a MicroSD memory card to the
device’s Flash program memory. The MicroSD bootloader uses substantial parts of the
Microchip Memory Disk Drive file system. The precompiled demos use substantial
parts of the Microchip USB Stack Library.
The applications accept user inputs from three sources: the capacitive touch pad, S1
(A5), the acceleration sensor, U6 (A4), and the potentiometer, R24 (A7).
? 2009 Microchip Technology Inc.
DS51852A-page 23
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