PIC16F676-I/ST Microchip Technology Inc., PIC16F676-I/ST Datasheet - Page 28

• Manufacturer Part Number: PIC16F676-I/ST
• Description: 14 PIN, 1.75 KB FLASH, 64 RAM, 12 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F676-I/ST

• Comparators: 1
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 12
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 14-pin TSSO
• Programmable Memory: 1.75K Bytes
• Ram Size: 64 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

PIC16F630/676
3.3
PORTC is a general purpose I/O port consisting of 6 bi-
directional pins. The pins can be configured for either
digital I/O or analog input to A/D converter. For specific
information about individual functions such as the
comparator or the A/D, refer to the appropriate section
in this Data Sheet.
EXAMPLE 3-2:
3.3.1
The RC0/RC1/RC2/RC3 pins are configurable to
function as one of the following:
• a general purpose I/O
• an analog input for the A/D Converter
FIGURE 3-6:
DS40039C-page 26
PORTC
PORTC
bcf
clrf
bsf
clrf
movlw
movwf
bcf
TRISC
TRISC
Data bus
WR
WR
Note:
(PIC16F676 only)
RD
RD
PORTC
D
D
STATUS,RP0
PORTC
STATUS,RP0
ANSEL
0Ch
TRISC
STATUS,RP0
To A/D Converter
CK
CK
The ANSEL register (9Fh) must be clear to
configure an analog channel as a digital
input. Pins configured as analog inputs will
read ‘0’. The ANSEL register is defined for
the PIC16F676.
RC0/AN4, RC1/AN5, RC2/AN6, RC3/
AN7
Q
Q
Q
Q
INITIALIZING PORTC
BLOCK DIAGRAM OF
RC0/RC1/RC2/RC3 PINs
Analog Input
;Bank 0
;Init PORTC
;Bank 1
;digital I/O
;Set RC<3:2> as inputs
;and set RC<5:4,1:0>
;as outputs
;Bank 0
Mode
V
V
DD
SS
I/O Pin
3.3.2
The RC4 and RC5 pins are configurable to function as
a general purpose I/Os.
FIGURE 3-7:
PORTC
PORTC
TRISC
TRISC
Data bus
WR
WR
RD
RD
D
D
CK
CK
RC4 AND RC5
Q
Q
Q
Q
BLOCK DIAGRAM OF RC4
AND RC5 PINS
 2003 Microchip Technology Inc.
V
V
DD
SS
I/O Pin