Datasheet

PIC17C7XX
DS30289C-page 76  1998-2013 Microchip Technology Inc.
FIGURE 10-7: BLOCK DIAGRAM OF RB6 PORT PIN
FIGURE 10-8: BLOCK DIAGRAM OF RB7 PORT PIN
Note: I/O pin has protection diodes to Vdd and Vss.
Data Bus
Q
D
CK
Q
D
CK
Weak
Pull-up
Port
Data
OE
SPI Output Enable
SPI Output
WR_PORTB (Q4)
WR_DDRB (Q4)
RD_PORTB (Q2)
RD_DDRB (Q2)
RBIF
RBPU
Match Signal
from other
port pins
(PORTA<7>)
Peripheral Data In
Q
D
EN
P
N
Q
0
1
Note: I/O pin has protection diodes to VDD and VSS.
Data Bus
Q
D
CK
Q
D
CK
Weak
Pull-up
Port
Data
OE
SPI Output Enable
SPI Output
WR_PORTB (Q4)
WR_DDRB (Q4)
RD_PORTB (Q2)
RD_DDRB (Q2)
RBIF
RBPU
Match Signal
from other
port pins
(PORTA<7>)
Peripheral Data In
QD
EN
P
N
Q
0
1
SS Output Disable