pic18f4550 configuration

hejas.sp · Dec 16, 2012

hi
how many uart pins does pic18f4450 has? someone kindly help .many thanks.

bigdogguru · Dec 16, 2012

hejas.sp said:
how many uart pins does pic18f4450 has?

The device has only one USART.

More in depth information is readily available from the device datasheet:

PIC18F2450/4450 Datasheet

Or product page:

PIC18F4450 Product Page

Reference: PIC18F2450/4450 Datasheet, Section: 15.0 ENHANCED UNIVERSAL SYNCHRONOUS RECEIVER TRANSMITTER (EUSART)

The pins of the Enhanced USART are multiplexed
with PORTC. In order to configure RC6/TX/CK and
RC7/RX/DT as an EUSART:

• bit SPEN (RCSTA<7>) must be set (= 1)

• bit TRISC<7> must be set (= 1)

• bit TRISC<6> must be cleared (= 0) for Asynchronous and Synchronous Master modes or set (= 1) for Synchronous Slave mode

BigDog

hexreader · Dec 16, 2012

If you are using the 40 pin DIP version:

In asynchronous mode:

TX on pin 25
RX on pin 26

In Synchronous mode:

CK on pin 25
DT on pin 26

You will need a ground connection in either mode.

At least that is my understanding of the datasheet.

EDIT: BigDog got there first..

pic18f4550 configuration

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pic18f4550 configuration

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