PIC17C752 MICROCHIP [Microchip Technology], PIC17C752 Datasheet - Page 70

• Manufacturer Part Number: PIC17C752
• Description: High-Performance 8-Bit CMOS EPROM Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 10-7: BLOCK DIAGRAM OF RB6 PORT PIN
FIGURE 10-8: BLOCK DIAGRAM OF RB7 PORT PIN
DS30264A-page 70
Note: I/O pins have protection diodes to V
Note: I/O pins have protection diodes to V
Weak
Pull-Up
Weak
Pull-Up
N
P
N
P
OE
OE
DD
DD
and Vss.
and Vss.
0
1
0
1
EN
EN
D
D
EN
Q
Q
Preliminary
Port
Data
Port
Data
Q
Q
Q
Q
CK
CK
D
D
Match Signal
from other
port pins
Match Signal
from other
port pins
Q
Q
CK
CK
1997 Microchip Technology Inc.
D
D
RBPU
RBPU
Peripheral Data in
Peripheral Data in
SPI output enable
SPI output enable
SS output disable
WR_PORTB (Q4)
WR_PORTB (Q4)
RD_PORTB (Q2)
RD_PORTB (Q2)
WR_DDRB (Q4)
WR_DDRB (Q4)
RD_DDRB (Q2)
RD_DDRB (Q2)
(PORTA<7>)
(PORTA<7>)
SPI output
SPI output
Data Bus
Data Bus
RBIF
RBIF