PIC16F636-I/P Microchip Technology Inc., PIC16F636-I/P Datasheet - Page 46

• Manufacturer Part Number: PIC16F636-I/P
• Description: 14 PIN, 3.5 KB FLASH, 128 RAM, 12 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F636-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 12
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 14-pin PDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC12F635/PIC16F636/639
4.2.4
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, refer to the appropriate section
in this data sheet.
FIGURE 4-1:
DS41232B-page 44
Note 1:
PIN DESCRIPTIONS AND
DIAGRAMS
Data Bus
WPUDA
WPUDA
PORTA
PORTA
TRISA
TRISA
IOCA
IOCA
WDA
WDA
Interrupt-on-
WR
WR
WR
WR
WR
RD
RD
RD
RD
RD
Change
Comparator mode determines Analog Input mode.
BLOCK DIAGRAM OF RA0
D
D
D
D
D
CK
CK
CK
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Input Mode
Analog
RAPU
(1)
Preliminary
RD PORTA
Input Mode
Analog
Q
Q
4.2.4.1
Figure 4-2 shows the diagram for this pin. The RA0 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input to the comparator
• In-Circuit Serial Programming
• an analog input for the Ultra Low-Power Wake-up
(1)
EN
EN
D
D
0
1
V
Q3
Weak
Weak
DD
RA0/C1IN+/ICSPDAT/ULPWU
–
+
ULPWUE
V
SS
I
ULP
© 2005 Microchip Technology Inc.
V
T
™
data
V
V
DD
SS
I/O pin