PIC16F913-I/SP Microchip Technology Inc., PIC16F913-I/SP Datasheet - Page 71

• Manufacturer Part Number: PIC16F913-I/SP
• Description: 28 PIN, 7 KB FLASH, 352 RAM, 25 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F913-I/SP

• A/d Inputs: 5-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 25
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 7K Bytes
• Ram Size: 256 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

4.0
4.1
The PIC16F917/916/914/913 has a wide variety of
clock sources and selection features to allow it to be
used in a wide range of applications while maximizing
performance and minimizing power consumption.
Figure 4-1
PIC16F917/916/914/913 clock sources.
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 from one of two internal
oscillators, with a choice of speeds selectable via
software. Additional clock features include:
• Selectable system clock source between external
• Two-Speed Clock Start-up mode, which
• Fail-Safe Clock Monitor (FSCM) designed to
FIGURE 4-1:
© 2005 Microchip Technology Inc.
or internal via software.
minimizes latency between external oscillator
start-up and code execution.
detect a failure of the external clock source (LP,
XT, HS, EC or RC modes) and switch to the
Internal Oscillator.
OSC2
OSC1
Internal Oscillator
CLOCK SOURCES
Overview
HFINTOSC
LFINTOSC
illustrates
8 MHz
31 kHz
External Oscillator
PIC16F917/916/914/913 SYSTEM CLOCK BLOCK DIAGRAM
a
block
Sleep
diagram
500 kHz
250 kHz
125 kHz
31 kHz
8 MHz
4 MHz
2 MHz
1 MHz
of
Preliminary
the
(OSCCON<6:4>)
IRCF<2:0>
111
110
101
100
011
010
001
000
PIC16F917/916/914/913
LP, XT, HS, RC, RCIO, EC
The PIC16F917/916/914/913 can be configured in one
of eight clock modes.
1.
2.
3.
4.
5.
6.
7.
8.
Clock source modes are configured by the FOSC<2:0>
bits
Section 16.0 “Special Features of the CPU”). The
internal clock can be generated by two oscillators. The
HFINTOSC is a high-frequency calibrated oscillator.
The LFINTOSC is a low-frequency uncalibrated
oscillator.
EC – External clock with I/O on RA6.
LP – Low-gain Crystal or Ceramic Resonator
Oscillator mode.
Oscillator mode.
HS – High-gain Crystal or Ceramic Resonator
mode.
RC – External Resistor-Capacitor (RC) with
F
RCIO – External Resistor-Capacitor with I/O on
RA6.
INTOSC – Internal oscillator with F
on RA6 and I/O on RA7.
INTOSCIO – Internal oscillator with I/O on RA6
and RA7.
XT – Medium-gain Crystal or Ceramic Resonator
OSC
in
/4 output on RA6.
the
LCD Module
Power-up Timer (PWRT)
Watchdog Timer (WDT)
Fail-Safe Clock Monitor (FSCM)
(Configuration Word)
Configuration
(OSCCON<0>)
FOSC<2:0>
SCS
System Clock
(CPU and Peripherals)
Word
DS41250E-page 69
OSC
register
/4 output
(see