PIC16F639-I/SS Microchip Technology, PIC16F639-I/SS Datasheet - Page 28

• Manufacturer Part Number: PIC16F639-I/SS
• Description: IC MCU FLASH 2KX14 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F639-I/SS

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 20-SSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LVD, POR, WDT
• Number Of I /o: 11
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPXLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC162066 - HEADER INTRFC MPLAB ICD2 20PINAC164307 - MODULE SKT FOR PM3 28SSOP
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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