PIC16C770 Microchip Technology Inc., PIC16C770 Datasheet - Page 34

• Manufacturer Part Number: PIC16C770
• Description: 18/20-pin, 8-bit Cmos Microcontrollers With 10/12-bit A/d
• Manufacturer: Microchip Technology Inc.

PIC16C717/770/771
TABLE 3-1:
TABLE 3-2:
DS41120B-page 32
Address
05h
85h
9Dh
Legend: x = unknown, u = unchanged, - = unimplemented locations read as ’0’. Shaded cells are not used by PORTA.
RA3/AN3/V
RA2/AN2/V
RA6/OSC2/CLKOUT
RA7/OSC1/CLKIN
RA1/AN1/LVDIN
RA5/MCLR/V
RA4/T0CKI
RA0/AN0
Name
Name
PORTA
TRISA
ANSEL
REF
REF
+/VRH
-/VRL
PP
SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
PORTA FUNCTIONS
PORTA Data Direction Register
Bit 7
RA7
—
Function
CLKOUT
CLKIN
LVDIN
V
T0CKI
MCLR
V
OSC2
OSC1
VRH
RA0
AN0
RA1
AN1
RA2
AN2
VRL
RA3
AN3
RA4
RA5
RA6
RA7
V
REF
REF
PP
Bit 6
RA6
—
+
-
ST/AN
Power
ANS5
Input
XTAL
Bit 5
Type
RA5
AN
AN
AN
AN
AN
AN
AN
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ANS4
Bit 4
RA4
Output
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
XTAL
Type
OD
AN
AN
ANS3
Bit 3
RA3
Bi-directional I/O
A/D input
Bi-directional I/O
A/D input
LVD input reference
Bi-directional I/O
A/D input
Negative analog reference input
Internal voltage reference low output
Bi-directional I/O
A/D input
Positive analog reference input
Internal voltage reference high output
Bi-directional I/O
TMR0 clock input
Input port
Master clear
Programming voltage
Bi-directional I/O
Crystal/resonator
F
Bi-directional I/O
Crystal/resonator
External clock input/ER resistor connection
OSC
/4 output
ANS2
Bit 2
RA2
ANS1
Bit 1
RA1
Description
ANS0
Bit 0
RA0
2002 Microchip Technology Inc.
xxxx 0000
1111 1111
--11 1111
Value on:
POR,
BOR
Value on all
uuuu 0000
1111 1111
--11 1111
RESETS
other