PIC16F873A-I/SS Microchip Technology, PIC16F873A-I/SS Datasheet - Page 377

• Manufacturer Part Number: PIC16F873A-I/SS
• Description: IC MCU FLASH 4KX14 EE 28SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F873A-I/SS

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• 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-SSOP
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Core: PIC
• Processor Series: PIC16F
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Data Ram Size: 192 B
• Data Rom Size: 128 B
• On-chip Adc: Yes
• Number Of Programmable I/os: 22
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 5
• Height: 1.75 mm
• Interface Type: I2C, SPI, USART
• Length: 10.2 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4 V
• Width: 5.3 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164307 - MODULE SKT FOR PM3 28SSOPAC164020 - MODULE SKT PROMATEII 44TQFPXLT28SS-1 - SOCKET TRANSITION ICE 28SSOP
• Lead Free Status / Rohs Status: Details
• Other names: PIC16F873AI/SS

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