PIC16F636T-I Datasheet, PDF (58/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
TABLE 4-1: SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR,
WUR
PORTA
—
—
RA5
RA4
RA3
RA2
RA1
RA0
--xx xx00
INTCON
GIE
PEIE
T0IE
INTE
RAIE
T0IF
INTF
RAIF
0000 000x
TMR1L
Holding Register for the Least Significant Byte of the 16-bit TMR1 Register
xxxx xxxx
TMR1H
Holding Register for the Most Significant Byte of the 16-bit TMR1 Register
xxxx xxxx
T1CON
T1GINV TMR1GE T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON 0000 0000
CMCON1
—
—
—
—
—
—
T1GSS CxSYNC ---- --10
CMCON0
C2OUT C1OUT C2INV
C1INV
CIS
CM2
CM1
CM0
0000 0000
OPTION_REG RAPU INTEDG T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
TRISA
—
—
TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 --11 1111
WPUDA
—
—
WPUDA5 WPUDA4
—
WPUDA2 WPUDA1 WPUDA0 --11 -111
IOCA
—
—
IOCA5 IOCA4 IOCA3 IOCA2 IOCA1 IOCA0 --00 0000
WDA
—
—
WDA5
WDA4
—
WDA2
WDA1
WDA0
--11 -111
Legend: x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by PORTA.
Value on all
other Resets
--uu uu00
0000 000x
uuuu uuuu
uuuu uuuu
uuuu uuuu
---- --10
0000 0000
1111 1111
--11 1111
--11 -111
--00 0000
--11 -111
DS41232D-page 56
© 2007 Microchip Technology Inc.