PIC16LF720_11 Datasheet, PDF (55/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F720/721
FIGURE 6-6:
Data Bus
DQ
WR
WPUA
CK _Q
RD
WPUA
BLOCK DIAGRAM OF RA5
INTOSC
mode
VDD
Weak
RABPU
DQ
WR
PORTA
CK _Q
WR
TRISA
DQ
CK _Q
RD
TRISA
VDD
INTOSC
mode
I/O Pin
VSS
RD
PORTA
DQ
WR
IOCA
CK _Q
RD
IOCA
Interrupt-on-
Change
QD
EN
Q3
QD
EN
RD PORTA
To TMR1 or CLKIN
TABLE 6-1: 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
ADCON0
—
—
CHS3
CHS2
CHS1
CHS0 _GO/DONE ADON --00 0000
ANSELA
—
—
—
ANSA4
—
ANSA2 ANSA1 ANSA0 ---1 -111
OPTION_REG RABPU INTEDG T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
PORTA
—
—
RA5
RA4
RA3
RA2
RA1
RA0
--xx xxxx
TRISA
—
—
TRISA5 TRISA4
—
TRISA2 TRISA1 TRISA0 --11 -111
Legend: x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by PORTA.
Value on
all other
Resets
--00 0000
---1 -111
1111 1111
--xx xxxx
--11 -111
 2011 Microchip Technology Inc.
Preliminary
DS41430B-page 55