PIC16F631-I/SS Microchip Technology, PIC16F631-I/SS Datasheet - Page 68

• Manufacturer Part Number: PIC16F631-I/SS
• Description: IC PIC MCU FLASH 1KX14 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F631-I/SS

• Program Memory Type: FLASH
• Program Memory Size: 1.75KB (1K x 14)
• Package / Case: 20-SSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 18
• Eeprom Size: 128 x 8
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 64 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 17
• 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, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 658-1047-5 - BOARD EVALUATION ACCESSTOUCHXLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPXLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC162061 - HEADER INTRFC MPLAB ICD2 20PINAC164307 - MODULE SKT FOR PM3 28SSOP
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16F631/677/685/687/689/690
4.2.5.4
Figure 4-4 shows the diagram for this pin. The
RA3/MCLR/V
of the following:
• a general purpose input
• as Master Clear Reset with weak pull-up
FIGURE 4-4:
DS41262C-page 66
Data Bus
PORTA
IOCA
IOCA
TRISA
WR
RD
RD
RD
Interrupt-on-
Change
D
CK
RA3/MCLR/V
PP
Q
Q
pin is configurable to function as one
Reset
MCLRE
BLOCK DIAGRAM OF RA3
V
SS
PP
RD PORTA
MCLRE
Q
Q
MCLRE
EN
EN
D
D
V
DD
Weak
V
SS
Q3
Input
Pin
Preliminary
4.2.5.5
Figure 4-5 shows the diagram for this pin. The
RA4/AN3/T1G/OSC2/CLKOUT pin is configurable to
function as one of the following:
• a general purpose I/O
• an analog input for the ADC (except PIC16F631)
• a TMR1 gate input
• a crystal/resonator connection
• a clock output
FIGURE 4-5:
Data Bus
PORTA
PORTA
WPUA
WPUA
TRISA
TRISA
IOCA
IOCA
Note 1: CLK modes are XT, HS, LP, LPTMR1 and CLKOUT
WR
WR
WR
WR
RD
RD
RD
RD
Interrupt-on-
Change
2: With CLKOUT option.
3: ANSEL determines Analog Input mode.
4: Not implemented on PIC16F631.
Enable.
D
D
D
D
To T1G
To A/D Converter
CK
CK
CK
CK
RA4/AN3/T1G/OSC2/CLKOUT
Q
Q
Q
Q
Q
Q
Q
Q
Input Mode
BLOCK DIAGRAM OF RA4
Analog
© 2006 Microchip Technology Inc.
OSC1
(4)
F
OSC
INTOSC/
RC/EC
CLKOUT
CLKOUT
Enable
(3)
Enable
Input Mode
/4
RABPU
RD PORTA
CLKOUT
Enable
Analog
Oscillator
Circuit
Modes
Q
Q
1
0
(2)
CLK
EN
EN
(1)
D
D
V
DD
Weak
V
V
DD
SS
Q3
I/O Pin