PIC16F631/677/685/687/689/690
TABLE 4-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
Value on
all other
Resets
Value on
POR, BOR
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOCB
IOCB7 IOCB6 IOCB5 IOCB4
—
RABIE
—
—
T0IF
—
—
INTF
—
—
0000 ---- 0000 ----
INTCON
PORTB
TRISB
WPUB
GIE
PEIE
RB6
T0IE
RB5
INTE
RB4
RABIF 0000 000x 0000 000x
RB7
—
—
—
xxxx ---- uuuu ----
1111 ---- 1111 ----
1111 ---- 1111 ----
TRISB7 TRISB6 TRISB5 TRISB4
WPUB7 WPUB6 WPUB5 WPUB4
—
—
—
—
—
—
Legend: x= unknown, u= unchanged, —= unimplemented read as ‘0’. Shaded cells are not used by PORTB.
© 2007 Microchip Technology Inc.
DS41262D-page 75