PIC16F887-E/P Microchip Technology Inc., PIC16F887-E/P Datasheet - Page 44

• 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
Each PORTA pin is multiplexed with other functions. The
pins and their combined functions are briefly described
here. For specific information about individual functions
such as the comparator or the A/D Converter (ADC),
refer to the appropriate section in this data sheet.
FIGURE 3-1:
DS41291E-page 42
PIN DESCRIPTIONS AND
DIAGRAMS
Data Bus
PORTA
PORTA
TRISA
TRISA
Note 1:
WR
WR
RD
RD
BLOCK DIAGRAM OF RA0
D
D
ANSEL determines Analog Input mode.
CK
CK
Q
Q
Q
Q
To Comparator
To A/D Converter
Input Mode
Analog
(1)
3.2.3.1
Figure 3-1 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
• an analog input for the Ultra Low-Power Wake-up
0
1
+
-
ULPWUE
RA0/AN0/ULPWU/C12IN0-
I
ULP
V
SS
V
TRG
© 2008 Microchip Technology Inc.
V
V
DD
SS
I/O Pin