PIC16F648A-I/P Microchip Technology Inc., PIC16F648A-I/P Datasheet - Page 24
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PIC16F648A-I/P
Manufacturer Part Number
PIC16F648A-I/P
Description
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F648A-IP.pdf
(132 pages)
Specifications of PIC16F648A-I/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
7K Bytes
Ram Size
256 Bytes
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F648A-I/P
Manufacturer:
MICROCHIP
Quantity:
2 100
Part Number:
PIC16F648A-I/P
Manufacturer:
MICROCH
Quantity:
20 000
PIC16F630/676
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 individ-
ual functions such as the comparator or the A/D, refer
to the appropriate section in this Data Sheet.
3.2.3.1
Figure 3-1 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 for the A/D (PIC16F676 only)
• an analog input to the comparator
3.2.3.2
Figure 3-1 shows the diagram for this pin. The RA1 pin
is configurable to function as one of the following:
• as a general purpose I/O
• an analog input for the A/D (PIC16F676 only)
• an analog input to the comparator
• a voltage reference input for the A/D (PIC16F676
DS40039C-page 22
only)
PIN DESCRIPTIONS AND
DIAGRAMS
RA0/AN0/CIN+
RA1/AN1/CIN-/V
REF
FIGURE 3-1:
PORTA
PORTA
WPUA
WPUA
Data Bus
TRISA
TRISA
IOCA
IOCA
Interrupt-on-Change
WR
WR
WR
WR
RD
RD
RD
RD
D
D
D
D
To Comparator
To A/D Converter
CK
CK
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
Input Mode
BLOCK DIAGRAM OF RA0
AND RA1 PINS
RD PORTA
Analog
2003 Microchip Technology Inc.
Input Mode
RAPU
Analog
Q
Q
EN
EN
D
D
V
DD
Weak
V
V
DD
SS
I/O pin