PIC16F873A-I/SS Microchip Technology, PIC16F873A-I/SS Datasheet - Page 378

• 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

PICmicro MID-RANGE MCU FAMILY
20.6
20.7
DS31020A-page 20-8
Comparator Response Time
Comparator Outputs
Response time is the minimum time, after selecting a new reference voltage or input source,
before the comparator output is guaranteed to have a valid level. If the internal reference is
changed, the maximum settling time of the internal voltage reference must be considered when
using the comparator outputs. Otherwise the maximum response time of the comparators should
be used.
The comparator outputs are read through the CMCON register. These bits are read only. The
comparator outputs may also be directly output to the I/O pins. When CM2:CM0 = 110, multiplex-
ors in the output path of the I/O pins will switch and the output of each pin will be the unsynchro-
nized output of the comparator. The uncertainty of each of the comparators is related to the input
offset voltage and the response time given in the specifications.
ator output block diagram.
The TRIS bits will still function as the output enable/disable for the I/O pins while in this mode.
Figure 20-3: Comparator Output Block Diagram
Note 1: When reading the Port register, all pins configured as analog inputs will read as a
Note 2: Analog levels on any pin that is defined as a digital input may cause the input buffer
‘0’. Pins configured as digital inputs will convert an analog input according to the
Schmitt Trigger input specification.
to consume more current than is specified.
To I/O pin
Set
CMIF
bit
Bus
Data
RD CMCON
From
Other
Comparator
Q
Q
EN
D
CL
EN
D
RESET
Figure 20-3
RD CMCON
1997 Microchip Technology Inc.
MULTIPLEX
Port Pins
+
shows the compar-
-