DM163029 Microchip Technology, DM163029 Datasheet - Page 32

• Manufacturer Part Number: DM163029
• Description: BOARD PICDEM FOR MECHATRONICS
• Manufacturer: Microchip Technology

Specifications of DM163029

• Main Purpose: Power Management, Motor Control
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Processor To Be Evaluated: PIC16F917
• Interface Type: RS-232
• Silicon Manufacturer: Microchip
• Silicon Core Number: DM163029
• Silicon Family Name: PICDEM
• Kit Contents: PICDEM Mechatronics Board, MCU Samples, Software And Cables
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICDEM
DS51557C-page 28
TM
FIGURE 2-9:
Instructions
Use Switch 2 to set the hours and Switch 3 to set the minutes. Pressing and holding
either of these switches will make the hours or minutes increment at a fast rate. Toggle
between displaying the time (hours and minutes) and displaying the seconds by
pressing Switch 4.
Discussion
The 32.768 kHz crystal is used to take the guess work out of creating a clock display.
You may recognize this frequency as being 2
clock pulses to seconds in the binary world of a microcontroller. Every time bit 15 in
Timer1 changes, one second has elapsed. A crystal is used because an RC oscillator
will have an unacceptable degree of error after several days.
Mechatronics Demo Board User’s Guide
32.768 kHz
SW2
SW3
Y1
V
V
DD
DD
10 kΩ
10 kΩ
R4
R6
PROJECT 4: SCHEMATIC
1 kΩ
1 kΩ
R5
R7
22 pF
22 pF
C35
C34
13
14
2
3
RA1
T1OSI
RA0
T1OSO
PIC16F917
V
DD
11/32
15
COM
SEG
RA3
kHz. This makes it very easy to convert
V
SS
X
X
12/31
5
1 kΩ
R9
© 2006 Microchip Technology Inc.
Segment pins
Common pins
10 kΩ
VIM-332-DP
R8
LCD1
V
DD
SW4