PIC16F526 Datasheet, PDF (35/122 Pages) Microchip Technology – 14-Pin, 8-Bit Flash Microcontroller

PIC16F526
TABLE 6-2: SUMMARY OF PORT REGISTERS
Addr Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3 Bit 2 Bit 1 Bit 0
Value on
Power-On
Reset
Value on
All Other
Resets
N/A
TRIS
—
— I/O Control Register (PORTB, PORTC)
--11 1111 --11 1111
N/A
OPTION RBWU RBPU TOCS TOSE PSA PS2 PS1 PS0 1111 1111 1111 1111
03h
STATUS RBWUF CWUF PA0
TO
PD
Z
DC C 0001 1xxx qq0q quuu⁽¹⁾
06h
PORTB
—
— RB5 RB4 RB3 RB2 RB1 RB0 --xx xxxx --uu uuuu
07h
PORTC
—
— RC5 RC4 RC3 RC2 RC1 RC0 --xx xxxx --uu uuuu
Legend:
Note 1:
Shaded cells are not used by PORT registers, read as ‘0’. – = unimplemented, read as ‘0’, x = unknown,
u = unchanged,
q = depends on condition.
If Reset was due to wake-up on pin change, then bit 7 = 1. All other Resets will cause bit 7 = 0.
TABLE 6-3: I/O PINS ORDER OF PRECEDENCE
Priority RB0
RB1
RB2
RB3
RC0
1
AN0
AN1
AN2 RB3/MCLR C2IN+
2
C1IN+ C1IN- C1OUT
—
TRISC
3
TRISB TRISB TRISB
—
—
RC1
C2IN-
TRISC
—
RC2
CVREF
TRISC
—
RC4
C2OUT
TRISC
—
RC5
T0CKI
TRISC
—
 2010 Microchip Technology Inc.
DS41326D-page 35