PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 33

• Manufacturer Part Number: PIC16F877-20/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-20/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

1997 Microchip Technology Inc.
Table 2-1:
Table 2-2:
Configuration bits
FOSC2:FOSC0
Configuration
FOSC1:FOSC0
1 1 1
1 1 0
1 0 1
1 0 0
0 1 1
0 1 0
0 0 1
0 0 0
bits
1 1
1 0
0 1
0 0
Selecting the Oscillator Mode for Devices with FOSC1:FOSC0
Selecting the Oscillator Mode for Devices with FOSC2:FOSC0
CLKOUT
CLKOUT
EXTRC
EXTRC
INTRC
INTRC
Mode
Mode
OSC
OSC
with
with
HS
XT
LP
RC
HS
—
XT
LP
Medium Gain Standard crystal/resonator frequency.
Medium Gain Standard crystal/resonator frequency.
Feedback
High Gain
Low Gain
Feedback
High Gain
Inverter
Low Gain
Inverter
OSC
Gain
OSC
Gain
—
—
—
—
—
—
Section 2. Oscillator
Least expensive solution for device oscillation
(only an external resistor and capacitor is
required). Most variation in time-base.
Device’s default mode.
High frequency application.
Oscillator circuit’s mode consumes the most
current of the three crystal modes.
Oscillator circuit’s mode consumes the middle
current of the three crystal modes.
Low power/frequency applications.
Oscillator circuit’s mode consumes the least
current of the three crystal modes.
Inexpensive solution for device oscillation. Most
variation in timebase. CLKOUT is enabled on
pin. Device’s default mode.
Inexpensive solution for device oscillation. Most
variation in timebase.
CLKOUT is disabled (use as I/O) on pin.
Least expensive solution for device oscillation.
4 MHz oscillator, which can be tuned.
CLKOUT is enabled on pin.
Least expensive solution for device oscillation.
4 MHz oscillator, which can be tuned.
CLKOUT is disabled (use as I/O) on pin.
Reserved
High frequency application.
Oscillator circuit’s mode consumes the most
current of the three crystal modes.
Oscillator circuit’s mode consumes the middle
current of the three crystal modes.
Low power/frequency applications.
Oscillator circuit’s mode consumes the least
current of the three crystal modes.
Comment
Comment
DS31002A-page 2-3
2