PIC16F916-I/SP Microchip Technology, PIC16F916-I/SP Datasheet - Page 33

• Manufacturer Part Number: PIC16F916-I/SP
• Description: IC PIC MCU FLASH 8KX14 28SDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F916-I/SP

• Program Memory Type: FLASH
• Program Memory Size: 14KB (8K x 14)
• Package / Case: 28-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 24
• Eeprom Size: 256 x 8
• Ram Size: 352 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 352 B
• Interface Type: SSP/I2C/AUSART/SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DV164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

3.0
3.1
The PIC16F91X 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
illustrates a block diagram of the PIC16F91X 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 3-1:
 2004 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
minimizing
Internal Oscillator
CLOCK SOURCES
Overview
HFINTOSC
LFINTOSC
8 MHz
31 kHz
External Oscillator
power
PIC16F91X SYSTEM CLOCK BLOCK DIAGRAM
consumption.
Sleep
500 kHz
250 kHz
125 kHz
Figure 3-1
31 kHz
8 MHz
4 MHz
2 MHz
1 MHz
Preliminary
(OSCCON<6:4>)
IRCF<2:0>
111
110
101
100
011
010
001
000
LP, XT, HS, RC, RCIO, EC
The PIC16F91X 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.
INTRCIO – 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
PIC16F91X
System Clock
(CPU and Peripherals)
Word
DS41250B-page 31
OSC
register
/4 output
(see