PIC16C711-10/SP View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16C711-10/SP Datasheet PDF : 176 Pages
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PIC16C71X
FIGURE 5-4:
RBPU(2)
Data bus
WR Port
WR TRIS
BLOCK DIAGRAM OF
RB7:RB4 PINS
(PIC16C71)
VDD
Data Latch
DQ
CK
P
weak
pull-up
I/O
pin(1)
TRIS Latch
DQ
CK
TTL
Input
Buffer
ST
Buffer
RD TRIS
Latch
QD
RD Port
EN
Set RBIF
From other
RB7:RB4 pins
QD
EN
RD Port
RB7:RB6 in serial programming mode
Note 1: I/O pins have diode protection to VDD and VSS.
2: TRISB = ’1’ enables weak pull-up if
RBPU = ’0’ (OPTION<7>).
FIGURE 5-5:
RBPU(2)
Data bus
WR Port
BLOCK DIAGRAM OF
RB7:RB4 PINS
(PIC16C710/711/715)
VDD
Data Latch
DQ
CK
P
weak
pull-up
I/O
pin(1)
TRIS Latch
DQ
WR TRIS
CK
TTL
Input
Buffer
ST
Buffer
RD TRIS
Latch
QD
Set RBIF
RD Port
EN
Q1
From other
RB7:RB4 pins
QD
EN
RB7:RB6 in serial programming mode
RD Port
Q3
Note 1: I/O pins have diode protection to VDD and VSS.
2: TRISB = ’1’ enables weak pull-up if
RBPU = ’0’ (OPTION<7>).
TABLE 5-3: PORTB FUNCTIONS
Name
Bit#
Buffer
Function
RB0/INT
bit0
TTL/ST(1) Input/output pin or external interrupt input. Internal software
programmable weak pull-up.
RB1
bit1
TTL
Input/output pin. Internal software programmable weak pull-up.
RB2
bit2
TTL
Input/output pin. Internal software programmable weak pull-up.
RB3
bit3
TTL
Input/output pin. Internal software programmable weak pull-up.
RB4
bit4
TTL
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up.
RB5
bit5
TTL
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up.
RB6
bit6
TTL/ST(2) Input/output pin (with interrupt on change). Internal software programmable
weak pull-up. Serial programming clock.
RB7
bit7
TTL/ST(2) Input/output pin (with interrupt on change). Internal software programmable
weak pull-up. Serial programming data.
Legend: TTL = TTL input, ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
2: This buffer is a Schmitt Trigger input when used in serial programming mode.
DS30272A-page 28
© 1997 Microchip Technology Inc.
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