Using a PICDEM鈩?1 or PICDEM鈩?2 Board as Host
5.2 Using the PICDEM 2 Board
The PICDEM鈩?2 board may be used as the host controller in an IrDA
standard compatible system. PortB can be used to display received
characters, while any of the other ports would be used for the UART and
control signals. A PICmicro microcontroller may be selected that has a
hardware UART, or the UART functionality may be implemented in software.
Figure 5.2 shows the parts layout (silk-screen) for the PICDEM 2 board.
Figure 5.2: PICDEM 2 Parts Layout
U8
J2
+9V
IN
9V BATTERY
CR1
+
C17
R15
PWR
J6
7
RN2
6
U2
Y2
R4
C2
5
PORT B
4
3
U1
MCLR
RA0
RA1
RA2
RA3
RA4
RA5
RE0
RE1
RE2
NC
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
RD7
RD6
RD5
RD4
RD3
RD2
RD1
RD0
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RC0
+5V
+5V
2
1
0
RN1
2
1
LCD DSPLY
J3
14
13
R6
R5
J1
C16
U5
CR2
GND
C19
R14
C11
C18
U3
J7 Y1
C5
C4
1
C3
C13
C12
C15
C14
R8
R9
R10
R11
R12
R13
TM
U4
PIC16C73
C8
Y3
C10
(RX)
(TX)
PIC16C64/74
RC2
(SDA)
(SCL)
(OSI)
(OSO)
RN4
RN3
J4
1
GND
+5V
C7
C6
R18
R17
R2
RESET
+5V
GND
RA4
S1
C1
R1
R3
RA0
S2
C9
R7
R19
J5
S3
KEYPAD
PICDEM 2 DEMO BOARD
漏1994
Note 1:
U2 is for use with any 28-pin PIC16CXXX or PIC18CXXX device.
2:
U1 is for use with any 40-pin PIC16CXXX or PIC18CXXX device.
錚?/div>
2001 Microchip Technology Inc.
GND
DS51246A-page 43
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