Datasheet

PIC12F510/16F506
DS41268D-page 30 © 2007 Microchip Technology Inc.
FIGURE 5-6: BLOCK DIAGRAM OF RB4 FIGURE 5-7: BLOCK DIAGRAM OF GP4
Data
Bus
QD
Q
CK
QD
Q
CK
WR
Port
TRIS ‘f’
Data
TRIS
RD Port
W
Reg
Latch
Latch
Reset
Note 1: I/O pins have protection diodes to VDD and VSS.
2: Input mode is disabled when pin is used for
oscillator.
1
0
INTOSC/RC/EC
CLKOUT Enable
FOSC/4
Oscillator
Circuit
OSC1
RBPU
I/O
pin
(1)
(Note 2)
Data
Bus
QD
Q
CK
QD
Q
CK
WR
Port
TRIS ‘f’
Data
TRIS
RD Port
I/O
pin
(1)
W
Reg
Latch
Latch
Reset
Note 1: I/O pins have protection diodes to VDD and
V
SS.
INTOSC/RC
Oscillator
Circuit
OSC1