PIC18F87J90 Datasheet, PDF (134/450 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F87J90 FAMILY
TABLE 10-16: PORTG FUNCTIONS
Pin Name
Function
TRIS
Setting
I/O
I/O
Type
Description
RG0/LCDBIAS0
RG0
0
O
DIG LATG<0> data output.
1
I
ST PORTG<0> data input.
LCDBIAS0
x
I
ANA LCD module bias voltage input.
RG1/TX2/CK2
RG1
0
O
DIG LATG<1> data output.
1
I
ST PORTG<1> data input.
TX2
1
O
DIG Synchronous serial data output (AUSART module); takes priority over
port data.
CK2
1
O
DIG Synchronous serial data input (AUSART module); user must configure
as an input.
1
I
ST Synchronous serial clock input (AUSART module).
RG2/RX2/DT2/
VLCAP1
RG2
0
O
DIG LATG<2> data output.
1
I
ST PORTG<2> data input.
RX2
1
I
ST Asynchronous serial receive data input (AUSART module).
DT2
1
O
DIG Synchronous serial data output (AUSART module); takes priority over
port data.
1
I
ST Synchronous serial data input (AUSART module); user must configure
as an input.
VLCAP1
x
I
ANA LCD charge pump capacitor input.
RG3/VLCAP2
RG3
0
O
DIG LATG<3> data output.
1
I
ST PORTG<3> data input.
VLCAP2
x
I
ANA LCD charge pump capacitor input.
RG4/SEG26/
RTCC
RG4
0
O
DIG LATG<4> data output.
1
I
ST PORTG<4> data input.
SEG26
x
O
ANA LCD Segment 26 output; disables all other pin functions.
RTCC
x
O
DIG RTCC output.
Legend: O = Output, I = Input, ANA = Analog Signal, DIG = Digital Output, ST = Schmitt Trigger Buffer Input,
x = Don’t care (TRIS bit does not affect port direction or is overridden for this option).
TABLE 10-17: SUMMARY OF REGISTERS ASSOCIATED WITH PORTG
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
PORTG
LATG
TRISG
LCDSE3
Legend:
Note 1:
RDPU REPU RJPU⁽¹⁾ RG4
RG3
RG2
U2OD U1OD
—
LATG4 LATG3 LATG2
SPIOD CCP2OD CCP1OD TRISG4 TRISG3 TRISG2
SE31 SE30 SE29 SE28 SE27 SE26
— = unimplemented, read as ‘0’. Shaded cells are not used by PORTG.
Unimplemented on PIC18F6XJ90 devices, read as ‘0’.
RG1
LATG1
TRISG1
SE25
Bit 0
Reset
Values on
page
RG0
62
LATG0
62
TRISG0
62
SE24
61
DS39933D-page 134
 2010 Microchip Technology Inc.