文档介绍：International Symposium on Test Automation and Instrumentation ISTAI’2008
Analog munication Between Minitype PIC and PC
Liu Huachang
(The Institute of Electronic Engineering of CAEP, Miangyang 621900, China)
Abstract: The minitype PIC is widely used for PC serial level is that: logic “1” and “0” are and .
communication anlog with the development of PIC. However, When the RS-232C bus is used for serial
some minitype PIC haven’t inside serial interface, user need munication, we need connect external circuit to
design hardware and software for it. In this paper, the serial transform level. We should transform TTL/CMOS
communication problem is solved by design of serial level to RS-232C level at the end of transmission,
communication between minitpye PIC and PC based on transforming RS-232C level to TTL/ CMOS level at
Labview. the end of receiver. MAX232 is usual drive chip for
Keywords: PIC; Labview; munication serial transmit/receive. Moreover, its peripheral circuit
is easy, which only need 4 capacitors whit . The
1 Introduction circuit is shown in figure 1.
PIC series are a sort of microcontroller with new
type CMOS technics, the PIC12FX is the mid-range
series of PIC with 8 pins, which have characteristic
with practicality \low price \saving power \ minitype
\high speed etc.. So it fit to use in minitype equipment.
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