PIC16F873-04I/SO Microchip Technology, PIC16F873-04I/SO Datasheet - Page 377

• Manufacturer Part Number: PIC16F873-04I/SO
• Description: IC MCU FLASH 4KX14 EE 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F873-04I/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 4MHz
• No. Of Timers: 3
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 4 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 22
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

20.5.1
20.5.2
1997 Microchip Technology Inc.
External Reference Signal
Internal Reference Signal
When external voltage references are used, the comparator module can be configured to have
the comparators operate from the same or different reference sources. The reference signal must
be between V
The comparator module also allows the selection of an internally generated voltage reference for
the comparators. The
Reference Module that provides this signal. The internal reference signal is used when the com-
parators are in mode CM2:CM0 = 010
is applied to the V
The internal voltage reference may be used in any comparator mode. When used in this fashion
the I/O/V
REF
pin may be used for I/O. The voltage reference is connected to the V
SS
and V
IN
+ input of both comparators.
“Voltage Reference”
DD
, and can be applied to either pin of the comparator(s).
Section 20. Comparator
(Figure
section contains a detailed description of the Voltage
20-1). In this mode, the internal voltage reference
DS31020A-page 20-7
REF
pin.
20