PIC16F616T-I/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F616T-I/SL

14-Pin, Flash-Based 8-Bit CMOS Microcontrollers

Microchip Technology 

PIC16F610/616/16HV610/616

3.0 OSCILLATOR MODULE

3.1 Overview

The Oscillator module has a wide variety of clock

sources and selection features that allow it to be used

in a wide range of applications while maximizing perfor-

mance and minimizing power consumption. Figure 3-1

illustrates a block diagram of the Oscillator module.

Clock sources can be configured from external

oscillators, quartz crystal resonators, ceramic resonators

and Resistor-Capacitor (RC) circuits. In addition, the

system clock source can be configured with a choice of

two selectable speeds: internal or external system clock

source.

The Oscillator module can be configured in one of eight

clock modes.

1. EC – External clock with I/O on OSC2/CLKOUT.

2. LP – 32 kHz Low-Power Crystal mode.

3. XT – Medium Gain Crystal or Ceramic Resonator

Oscillator mode.

4. HS – High Gain Crystal or Ceramic Resonator

mode.

5. RC – External Resistor-Capacitor (RC) with

FOSC/4 output on OSC2/CLKOUT.

6. RCIO – External Resistor-Capacitor (RC) with

I/O on OSC2/CLKOUT.

7. INTOSC – Internal oscillator with FOSC/4 output

on OSC2 and I/O on OSC1/CLKIN.

8. INTOSCIO – Internal oscillator with I/O on

OSC1/CLKIN and OSC2/CLKOUT.

Clock Source modes are configured by the FOSC<2:0>

bits in the Configuration Word register (CONFIG). The

Internal Oscillator module provides a selectable

system clock mode of either 4 MHz (Postscaler) or

8 MHz (INTOSC).

FIGURE 3-1:

PIC® MCU CLOCK SOURCE BLOCK DIAGRAM

OSC2

OSC1

External Oscillator

Sleep

Internal Oscillator

INTOSC

8 MHz

Postscaler

4 MHz

FOSC<2:0>

IOSCFS

(Configuration Word Register)

LP, XT, HS, RC, RCIO, EC

INTOSC

System Clock

(CPU and Peripherals)

© 2009 Microchip Technology Inc.

DS41288F-page 27

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