PIC16F887-E/P Microchip Technology Inc., PIC16F887-E/P Datasheet - Page 46

• 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

PIC16F882/883/884/886/887
3.2.3.4
Figure 3-4 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose input
• an analog input for the ADC
• a positive voltage reference input for the ADC and
• a positive analog input to Comparator C1
FIGURE 3-4:
DS41291E-page 44
PORTA
PORTA
Data Bus
TRISA
TRISA
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.
RA3/AN3/V
Q
Q
Q
Q
BLOCK DIAGRAM OF RA3
REF
REF
REF
+)
Input Mode
+)
Analog
+/C1IN+
(1)
V
V
DD
SS
I/O Pin
3.2.3.5
Figure 3-5 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose I/O
• a clock input for Timer0
• a digital output from Comparator C1
FIGURE 3-5:
Data Bus
PORTA
PORTA
TRISA
TRISA
WR
WR
RD
RD
D
D
To Timer0
CK
CK
RA4/T0CKI/C1OUT
Q
Q
Q
Q
BLOCK DIAGRAM OF RA4
C1OUT
© 2008 Microchip Technology Inc.
C1OUT
Enable
1
0
V
V
DD
SS
I/O Pin