PIC16F887-E/P Microchip Technology Inc., PIC16F887-E/P Datasheet - Page 45

• Manufacturer Part Number: PIC16F887-E/P
• Description: 40 PIN, 14KB FLASH, 368 RAM, 36 I/O, PDIP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F887-E/P

• A/d Inputs: 14-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Frequency: 20 MHz
• Input Output: 35
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 40-pin PDIP
• Programmable Memory: 14K Bytes
• Ram Size: 368 Bytes
• Resistance, Drain To Source On: Bytes
• Serial Interface: MSSP or EUSART
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

3.2.3.2
Figure 3-2 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• a negative analog input to Comparator C1 or C2
FIGURE 3-2:
© 2008 Microchip Technology Inc.
Data Bus
PORTA
PORTA
TRISA
TRISA
WR
WR
RD
RD
Note 1:
D
D
To Comparator
To A/D Converter
CK
CK
ANSEL determines Analog Input mode.
RA1/AN1/C12IN1-
Q
Q
Q
Q
BLOCK DIAGRAM OF RA1
Input Mode
Analog
(1)
V
V
DD
SS
PIC16F882/883/884/886/887
I/O Pin
3.2.3.3
Figure 3-3 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• a negative voltage reference input for the ADC
• a comparator voltage reference output
• a positive analog input to Comparator C2
FIGURE 3-3:
Data Bus
PORTA
PORTA
TRISA
TRISA
and CV
WR
WR
RD
RD
Note 1:
REF
D
D
To Comparator (positive input)
To Comparator (V
To A/D Converter (V
To A/D Converter (analog channel)
CK
CK
ANSEL determines Analog Input mode.
RA2/AN2/V
Q
Q
Q
Q
BLOCK DIAGRAM OF RA2
VROE
REF
REF
REF
-)
-)
Input Mode
-/CV
Analog
CV
REF
REF
(1)
DS41291E-page 43
/C2IN+
V
V
DD
SS
I/O Pin