PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 685

• 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

V
W
X
1997 Microchip Technology Inc.
Voltage Reference (V
A voltage level that can be used as a reference point for A/D conversions (A
trip point for comparators.
von Neumann Architecture
In this architecture the Program Memory and Data Memory are contained in the same area. This
means that accesses to the program memory and data memory must occur sequentially, which
affects the performance of the device.
W Register
See Working Register.
Watchdog Timer (WDT)
Used to increase the robustness of a design by recovering from software flows that were not
expected in the design of the product or other system related issues. The Watchdog Timer
causes a reset if it is not cleared prior to overflow. The clock source for a PICmicro is an on-chip
RC oscillator which enhances system reliability.
WDT
Watchdog Timer.
Working Register (W)
Can also be thought of as the accumulator of the device. Also used as an operand in conjunction
with the ALU during two operand instructions.
XT
One of the device oscillator modes. Used for operation from 100 kHz to 4 MHz.
REF
)
Glossary
VDD
DS31035A-page 35-13
and A
VSS
) or the
35