PIC16F1933-ESLASHP datasheet(85/418 Pages) MICROCHIP

Part #	PIC16F1933-E/P

Description	28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PDF	418 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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85 / 418 page

Preliminary

DS41364A-page 83

PIC16F193X/LF193X

6.0

I/O PORTS

Depending on the device selected and peripherals

enabled, there are up to five ports available. In general,

when a peripheral is enabled, that pin may not be used

as a general purpose I/O pin.

Each port has three registers for its operation. These

registers are:

• TRISx registers (data direction register)

• PORTx registers (reads the levels on the pins of

the device)

• LATx registers (output latch)

The Data Latch (LATx registers) is

useful for

read-modify-write operations on the value that the I/O

pins are driving.

Ports with analog functions also have an ANSELx

power. A simplified model of a generic I/O port, without

the interfaces to other peripherals, is shown in

Figure 6-1.

FIGURE 6-1:

GENERIC I/O PORT

OPERATION

Write LATx

Data Register

I/O pin

Read PORTx

Write PORTx

TRISx

Read LATx

Data Bus

To peripherals

ANSELx

VDD

VSS

PIC16F1933-E/P Datasheet(PDF) 85 Page - Microchip Technology