PIC12F675ISN Microchip Technology, PIC12F675ISN Datasheet - Page 26

• Manufacturer Part Number: PIC12F675ISN
• Description: 8-Pin FLASH-Based 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

PIC12F629/675
3.3.5
Figure 3-4 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 A/D (PIC12F675 only)
• a TMR1 gate input
• a crystal/resonator connection
• a clock output
FIGURE 3-4:
DS41190C-page 24
TRISIO
TRISIO
Data Bus
PORT
PORT
Interrupt-on-Change
WPU
WPU
Note 1: CLK modes are XT, HS, LP, LPTMR1 and CLKOUT
WR
WR
WR
WR
IOC
IOC
RD
RD
RD
RD
2: With CLKOUT option.
Enable.
D
D
D
D
To TMR1 T1G
To A/D Converter
CK
CK
CK
CK
GP4/AN3/T1G/OSC2/CLKOUT
Q
Q
Q
Q
Q
Q
Q
Q
Input Mode
BLOCK DIAGRAM OF GP4
Analog
F
OSC1
OSC
INTOSC/
RC/EC
CLKOUT
CLKOUT
Enable
Enable
Input Mode
/4
GPPU
CLKOUT
Analog
Enable
RD PORT
Oscillator
(2)
Modes
Q
Q
1
0
CLK
Circuit
EN
EN
(1)
D
D
V
DD
Weak
V
V
DD
SS
I/O pin
3.3.6
Figure 3-5 shows the diagram for this pin. The GP5 pin
is configurable to function as one of the following:
• a general purpose I/O
• a TMR1 clock input
• a crystal/resonator connection
• a clock input
FIGURE 3-5:
TRISIO
Data Bus
PORT
PORT
WPU
WPU
TRISIO
Interrupt-on-Change
IOC
IOC
WR
WR
WR
WR
RD
RD
RD
RD
Note
D
D
D
D
1: Timer1 LP Oscillator enabled
2: When using Timer1 with LP oscillator, the Schmitt
To TMR1 or CLKGEN
CK
CK
CK
CK
GP5/T1CKI/OSC1/CLKIN
Trigger is by-passed.
Q
Q
Q
Q
Q
Q
Q
Q
BLOCK DIAGRAM OF GP5
INTOSC
 2003 Microchip Technology Inc.
Mode
OSC2
INTOSC
GPPU
Mode
TMR1LPEN
RD PORT
Oscillator
Q
Q
Circuit
EN
EN
D
D
(1)
V
DD
Weak
V
V
DD
SS
I/O pin
(2)