mikroElektronika PIC Microcontrollers PIC12 User Manual page 256

mikroC - C Compiler for Microchip PIC microcontrollers
Hardware Connection
+5V
+5V
page
248
PIC16F877A
MCLR/Vpp/THV RB7/PGD
RA0/AN0 RB6/PGC
RA1/AN1
RB5
RB4
RA2/AN2/Vref-
RB3/PGM
RA3/AN3/Vref+
RA4/TOCKI RB2
RB1
RA5/AN4
RE0/RD/AN5 RB0/INT
RE1/WR/AN6
Vdd
RE2/CS/AN7 Vss
Vdd RD7/PSP7
Vss RD6/PSP6
RD5/PSP5
OSC1
OSC2 RD4/PSP4
RCO/T1OSO RC7/RX/DT
RC1/T1OSI RC6/TX/CK
RC2/CCP1 RC5
RC3 RC4
RD0/PSP0 RD3/PSP3
RD1/PSP1 RD2/PSP2
+
+
RX
TX
RTS
GND
+
MikroElektronika: Development tools - Books - Compilers
Connecting PC and PIC via
RS485 communication line
+5V
R0
RE
DE
DI
LTC485
Shielded pair
less than 300m
long
4.7uF
C1+ Vcc R0
V+ GND
RE
C1- T1out
DE
R1in
C2+ DI
C2- R1out
LTC485
V- T1in
T2out T2in
R2in R2out
MAX232
RS232 to RS485 converter
mikroC
making it simple...
Up to 32 devices can
be connected to
RS485 line
+5V
Vcc
B
A
GND
+5V
Vcc
B
A
GND