PIC16F684-I/ST Microchip Technology Inc., PIC16F684-I/ST Datasheet - Page 37
PIC16F684-I/ST
Manufacturer Part Number
PIC16F684-I/ST
Description
14 PIN, 3.5 KB FLASH, 128 RAM, 12 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F684-IST.pdf
(192 pages)
Specifications of PIC16F684-I/ST
A/d Inputs
8-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
12
Memory Type
Flash
Number Of Bits
8
Package Type
14-pin TSSO
Programmable Memory
3.5K Bytes
Ram Size
128 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
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4.2.5
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
ADC, refer to the appropriate section in this data sheet.
4.2.5.1
Figure 4-1 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 ADC
• an analog non-inverting input to the comparator
• In-Circuit Serial Programming data
• an analog input for the Ultra Low-Power Wake-Up
FIGURE 4-1:
© 2006 Microchip Technology Inc.
PIN DESCRIPTIONS AND
DIAGRAMS
RA0/AN0/C1IN+/ICSPDAT/ULPWU
Data Bus
WPUA
PORTA
WPUA
PORTA
TRISA
Note 1:
TRISA
WR
IOCA
IOCA
Interrupt-on-
RD
WR
WR
WR
RD
RD
RD
BLOCK DIAGRAM OF RA0
Change
D
D
D
D
Comparator mode and ANSEL determines Analog Input mode.
CK
CK
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
To A/D Converter
To Comparator
RD PORTA
Input Mode
Analog
Q
Q
(1)
Input Mode
Analog
EN
EN
4.2.5.2
Figure 4-2 shows the diagram for this pin. The RA1 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• an analog inverting input to the comparator
• a voltage reference input for the ADC
• In-Circuit Serial Programming clock
D
D
0
(1)
RAPU
1
Q3
+
-
RA1/AN1/C1IN-/V
ULPWUE
V
Weak
DD
I
ULP
V
SS
V
PIC16F684
T
V
V
REF
DD
SS
DS41202D-page 35
/ICSPCLK
I/O Pin
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