Microchip Technology PICkit 28-Pin Demo Board DM164120-3 DM164120-3 User Manual
Product codes
DM164120-3
28-Pin Demo Board User’s Guide
DS41301A-page 8
©
2006 Microchip Technology Inc.
1.4
28-PIN DEMO BOARD OVERVIEW
The 28-Pin Demo Board is populated with a PIC16F886 MCU (U1), four LEDs
(DS1-DS4), push button (SW1), 32 KHz crystal (X2) and potentiometer (RP1). The
board layout is shown in Figure 1-1. The demo board has several test points to access
the I/O pins of the MCU and a generous prototyping area. The MCU can be
programmed with the PICkit™ 2 Microcontroller Programmer from header P1.
(DS1-DS4), push button (SW1), 32 KHz crystal (X2) and potentiometer (RP1). The
board layout is shown in Figure 1-1. The demo board has several test points to access
the I/O pins of the MCU and a generous prototyping area. The MCU can be
programmed with the PICkit™ 2 Microcontroller Programmer from header P1.
FIGURE 1-1:
28-PIN DEMO BOARD
1.5
RUNNING THE DEFAULT DEMONSTRATION
The assembled 28-Pin Demo Board comes preprogrammed with a demonstration
program. To use this program, power the demo board (3.0-5.5 V
program. To use this program, power the demo board (3.0-5.5 V
DC
) using a PICkit™ 2
Microcontroller Programmer, or a bench power supply connected to header P2. To use
the PICkit™ 2 Microcontroller Programmer, connect it to a PC USB port using the USB
cable. Start the PICkit™ 2 Microcontroller Programmer PC application and click on the
target power box to apply power to the demo board. The demo board will blink the LEDs
in the Reset pattern. The Reset pattern consists of three different LED blink patterns.
First, the LEDs will “ping pong” (LED1, 2, 3 and 4, then LED 4, 3, 2 and 1). Second, the
LEDs will blink on and off in unison. Third, the LEDs will perform the ADC display where
values 0x0A, 0x0D and 0x0C display in sequence followed by the Most Significant 4
bits of the ADC result measuring channel 1, which is the on-board potentiometer.
the PICkit™ 2 Microcontroller Programmer, connect it to a PC USB port using the USB
cable. Start the PICkit™ 2 Microcontroller Programmer PC application and click on the
target power box to apply power to the demo board. The demo board will blink the LEDs
in the Reset pattern. The Reset pattern consists of three different LED blink patterns.
First, the LEDs will “ping pong” (LED1, 2, 3 and 4, then LED 4, 3, 2 and 1). Second, the
LEDs will blink on and off in unison. Third, the LEDs will perform the ADC display where
values 0x0A, 0x0D and 0x0C display in sequence followed by the Most Significant 4
bits of the ADC result measuring channel 1, which is the on-board potentiometer.
Push Button
Potentiometer
PICkit™ 2
LEDs DS1-DS4
RP1
Programming Header
SW1
Generous
PICkit™
Serial Analyzer
Header
Aux Power
Connector
Connector
Crystal
Mounting Pads
32 KHz Crystal
Prototyping
Area