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1999 Microchip Technology Inc.
DS40182C-page 27
PIC16CE62X
TABLE 5-3:
PORTB FUNCTIONS
TABLE 5-4:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
Name
Bit #
Buffer Type
Function
RB0/INT
bit0
TTL/ST(1)
Input/output 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 pin.
RB7
bit7
TTL/ST(2)
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up. Serial programming data pin.
Legend: ST = Schmitt Trigger, TTL = TTL input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
Note 2: This buffer is a Schmitt Trigger input when used in serial programming mode.
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR
Value on
All Other
Resets
06h
PORTB
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
xxxx xxxx
uuuu uuuu
86h
TRISB
TRISB7
TRISB6
TRISB5 TRISB4
TRISB3
TRISB2
TRISB1
TRISB0
1111 1111
81h
OPTION
RBPU
INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
Legend: u = unchanged, x = unknown
Note:
Shaded bits are not used by PORTB.