PIC16F877T-20I/L Microchip Technology, PIC16F877T-20I/L Datasheet - Page 34

• Manufacturer Part Number: PIC16F877T-20I/L
• Description: IC MCU FLASH 8KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877T-20I/L

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 14KB (8K x 14)
• 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: -40°C ~ 85°C
• Package / Case: 44-PLCC
• For Use With: DVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
2.3
DS31002A-page 2-4
Crystal Oscillators / Ceramic Resonators
In XT, LP or HS modes a crystal or ceramic resonator is connected to the OSC1 and OSC2 pins
to establish oscillation
cut crystal. Using a series cut crystal may give a frequency out of the crystal manufacturer’s
specifications. When in XT, LP or HS modes, the device can have an external clock source drive
the OSC1 pin
Figure 2-1: Crystal or Ceramic Resonator Operation (HS, XT or LP Oscillator Mode)
Note 1: A series resistor, R
(Figure
2: The feedback resistor, R
3: Depending on the device, the buffer to the internal logic may be
either before or after the oscillator inverter.
C1
C2
2-3).
(Figure
Rs
XTAL
2-1). The PICmicro oscillator design requires the use of a parallel
(1)
OSC1
OSC2
S
, may be required for AT strip cut crystals.
R
F (2)
F
, is typically in the range of 2 to 10 M
PIC16CXXX
To internal logic
SLEEP
To internal logic
1997 Microchip Technology Inc.
(3)
(3)