Cirrus-logic AN88 Instrukcja Użytkownika Pobierz pdf (Strona 5)

AN88

AN88Rev2 5

CONCLUSION

This application note presents an example of how

to interface the CS5525/6/9 to the PIC16F84. It is

divided into two main sections: hardware and soft-

ware. The hardware section illustrates both a three-

wire and a four-wire interface. The three-wire is

SPI

and MICROWIRE

compatible. The soft-

ware, developed with development tools from Mi-

crochip, Inc., illustrates how to initialize the

converter and microcontroller, calibrate the con-

verters offset, write to and read from the ADC’s in-

ternal register, and acquire a conversion. The

software is modularized and illustrates important

subroutines, e.g. write_register and read_register.

The software described in the note is included in

the Appendix at the end of this document.

SPI

is a trademark of Motorola.

MICROWIRE

is a trademark of National Semiconductor.

MPLAB

is a trademark of Microchip.

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Cirrus-logic AN88 Instrukcja Użytkownika Strona 5