PS/2 connector enables direct connection between dsPICPRO3 and devices that use PS/2
communication, such as PC, keyboard or mouse. For example, microcontroller can be con-
nected to keyboard to capture pressed keys. It
also can be connected to PC to act as a key-
board. CLK and DATA lines are used for data
tansfer. In this case, they are connected to pins
RC4 and RC3 respectively.
M I K R O E L E K T R O N I K A S O F T W A R E A N D H A R D W A R E S O L U T I O N S F O R T H E E M B E D D E D W O R L D
2
25
5
page
dsPICPRO
USB
3
dsPICPRO3 User
’
s Manual
MikroElektronika
Development tools
Figure 29.
Keyboard connected to
development board
Figure 28.
PS/2 connector
PS/2 (KEYBOARD) CONNECTOR
PS/2 READY
DEVELOPMENT
DEVELOPMENT
PS/2 READY
PS2
CONNECTOR
DATA
NC
GND
VCC
CLK
NC
X1
10MHz
C1
22pF
C2
22pF
VCC
RG15
RC1
RC2
RC3
RC4
RG6
RG7
RG8
MCLR
RG9
Vss
Vdd
RA12
RA13
RB5
RB4
RB3
RB2
RB1
RB0
RC14
RC13
RD0
RD11
RD10
RD9
RD8
RA15
Vss
OSC2
OSC1/CLKI
Vdd
RG2
RG3
RF6
RF7
RF8
RF2
RF3
RB6 RB7
RA9
RA10 A
Vdd
A
Vss
RB8
RB9
RB1
1
Vss
Vdd RB12
RB13
RB14
RB15
RD14
RD15
RF4
RF5
RG13 RG12
RG14
RA7 RA6
RG0
RG1
RF1
Vdd
Vss
RD7 RD6
RD5
RD4
RD13
RD12
RD3
RD2
RD1
dsPIC30FXXXX
RF0
RB10
RA14
VCC
J20
J19
R50
1K
R51
1K
VCC
VCC
VCC
C5
100n
DATA
CLK
NC
NC
+5V
Figure 30.
PS/2 communication schematic
