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| PIC12F683_07 Datasheet, PDF (40/176 Pages) Microchip Technology – 8-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology | |||
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PIC12F683
4.2.5.4 GP3/MCLR/VPP
Figure 4-4 shows the diagram for this pin. The GP3 pin
is configurable to function as one of the following:
⢠a general purpose input
⢠as Master Clear Reset with weak pull-up
FIGURE 4-4:
BLOCK DIAGRAM OF GP3
MCLRE
VDD
Weak
Data
Bus
RD
TRISIO
RD
GPIO
WR
IOC
Reset
VSS
DQ
CK Q
RD
IOC
MCLRE
Input
pin
MCLRE
VSS
QD
EN
Q3
QD
Interrupt-on-
change
EN
RD GPIO
4.2.5.5 GP4/AN3/T1G/OSC2/CLKOUT
Figure 4-5 shows the diagram for this pin. The GP4 pin
is configurable to function as one of the following:
⢠a general purpose I/O
⢠an analog input for the ADC
⢠a Timer1 gate input
⢠a crystal/resonator connection
⢠a clock output
FIGURE 4-5:
BLOCK DIAGRAM OF GP4
Data
Bus
WR
WPU
DQ
CK Q
Analog
Input Mode CLK(1)
Modes
VDD
Weak
RD
WPU
WR
GPIO
DQ
CK Q
WR
TRISIO
DQ
CK Q
RD
TRISIO
RD
GPIO
WR
IOC
DQ
CK Q
RD
IOC
GPPU
Oscillator
Circuit
OSC1
CLKOUT
Enable
FOSC/4 1
0
CLKOUT
Enable
INTOSC/
RC/EC(2)
CLKOUT
Enable
Analog
Input Mode
VDD
I/O pin
VSS
QD
EN
Q3
QD
Interrupt-on-
change
To T1G
To A/D Converter
EN
RD GPIO
Note 1: CLK modes are XT, HS, LP, optional LP oscillator and
CLKOUT Enable.
2: With CLKOUT option.
DS41211D-page 38
© 2007 Microchip Technology Inc.
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