PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 376

• 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

PICmicro MID-RANGE MCU FAMILY
20.4
20.5
DS31020A-page 20-6
Comparator Operation
Comparator Reference
A single comparator is shown in
levels and the digital output. When the analog input at V
the output of the comparator is a digital low level. When the analog input at V
the analog input V
the output of the comparator in
response time.
An external or internal reference signal may be used depending on the comparator operating
mode. The analog signal that is present at V
output of the comparator is adjusted accordingly
Figure 20-2: Single Comparator
IN
–, the output of the comparator is a digital high level. The shaded areas of
Output
V
V
IN–
IN+
V
V
IN
IN
+
–
Figure 20-2
Figure 20-2
+
–
IN
along with the relationship between the analog input
represent the uncertainty due to input offsets and
– is compared to the signal at V
(Figure
20-2).
IN
+ is less than the analog input V
Output
1997 Microchip Technology Inc.
IN
IN
+ is greater than
+, and the digital
IN
–,