PIC16F684T-E/ST Microchip Technology, PIC16F684T-E/ST Datasheet - Page 37

• Manufacturer Part Number: PIC16F684T-E/ST
• Description: IC PIC MCU FLASH 2KX14 14TSSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F684T-E/ST

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 14-TSSOP
• For Use With: XLT14SS-1 - SOCKET TRANSITION 14DIP/14SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Connectivity: -

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:
© 2007 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
RD
Interrupt-on-
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 Comparator
To A/D Converter
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
V
ULP
SS
V
PIC16F684
T
V
V
REF
DD
SS
DS41202F-page 35
/ICSPCLK
I/O Pin