AC164112 Microchip Technology, AC164112 Datasheet - Page 89

• Manufacturer Part Number: AC164112
• Description: VOLTAGE LIMITER MPLAB ICD2 VPP
• Manufacturer: Microchip Technology

Specifications of AC164112

• Accessory Type: Voltage Limiter
• Product: Cable Assemblies
• Features: Programming And Debugging The Latest PIC12/PIC16/PIC18 Products
• Development Tool Type: Hardware - Eval/Demo Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MPLAB®
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With: MPLAB ICD 2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

7.0
7.1
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 performance and
minimizing power consumption. Figure 7-1 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 can be configured to use an internal calibrated
high-frequency oscillator as clock source, with a choice
of selectable speeds via software.
FIGURE 7-1:
© 2009 Microchip Technology Inc.
Internal Oscillator
OSC2
OSC1
500 kHz
OSCILLATOR MODULE
Overview
External Oscillator
SIMPLIFIED PIC
PLL
32x
(Configuration Word 1)
PLLEN
1
0
Sleep
®
MCU CLOCK SOURCE BLOCK DIAGRAM
16 MHz/500 kHz
2 MHz/62.5 kHz
8 MHz/250 kHz
4 MHz/125 kHz
PIC16F72X/PIC16LF72X
(OSCCON Register)
IRCF<1:0>
11
10
01
00
Clock source modes are configured by the FOSC bits
in Configuration Word 1 (CONFIG1). The oscillator
module can be configured for one of eight modes of
operation.
1.
2.
3.
4.
5.
6.
7.
8.
RC – External Resistor-Capacitor (RC) with
F
RCIO – External Resistor-Capacitor (RC) with
I/O on OSC2/CLKOUT.
INTOSC – Internal oscillator with F
on OSC2 and I/O on OSC1/CLKIN.
INTOSCIO – Internal oscillator with I/O on
OSC1/CLKIN and OSC2/CLKOUT.
EC – External clock with I/O on OSC2/CLKOUT.
HS – High Gain Crystal or Ceramic Resonator
mode.
XT – Medium Gain Crystal or Ceramic
Resonator Oscillator mode.
LP – Low-Power Crystal mode.
OSC
/4 output on OSC2/CLKOUT.
LP, XT, HS, RC, EC
INTOSC
(Configuration Word 1)
FOSC<2:0>
(CPU and Peripherals)
System Clock
DS41341E-page 89
OSC
/4 output