Datasheet

PIC18F6390/6490/8390/8490
DS39629C-page 128 © 2007 Microchip Technology Inc.
TABLE 9-16: PORTH FUNCTIONS
TABLE 9-17: SUMMARY OF REGISTERS ASSOCIATED WITH PORTH
Pin Name Function
TRIS
Setting
I/O Buffer Description
RH0/SEG47 RH0 0 O DIG-4 LATH<0> data output; disabled when LCD segment enabled.
1 I ST PORTH<0> data input.
SEG47 x O ANA Segment 47 analog output for LCD.
RH1/SEG46 RH1 0 O DIG LATH<1> data output; disabled when LCD segment enabled.
1 I ST PORTH<1> data input.
SEG46 x O ANA Segment 46 analog output for LCD.
RH2/SEG45 RH2 0 O DIG LATH<2> data output; disabled when LCD segment enabled.
1 I ST PORTH<2> data input.
SEG45 x O ANA Segment 45 analog output for LCD.
RH3/SEG44 RH3 0 O DIG LATH<3> data output; disabled when LCD segment enabled.
1 I ST PORTH<3> data input.
SEG44 x O ANA Segment 44 analog output for LCD.
RH4/SEG40 RH4 0 O DIG LATH<4> data output; disabled when LCD segment enabled.
1 I ST PORTH<4> data input.
SEG40 x O ANA Segment 40 analog output for LCD
RH5/SEG41 RH5 0 O DIG LATH<5> data output; disabled when LCD segment enabled.
1 I ST PORTH<5> data input.
SEG41 x O ANA Segment 41 analog output for LCD.
RH6/SEG42 RH6 0 O DIG LATH<6> data output; disabled when LCD segment enabled.
1 I ST PORTH<6> data input.
SEG42 x O ANA Segment 42 analog output for LCD.
RH7/SEG43 RH7 0 O DIG LATH<7> data output; disabled when LCD segment enabled.
1 I ST PORTH<7> data input.
SEG43 x O ANA Segment 43 analog output for LCD.
Legend: O = Output, I = Input, ANA = Analog Signal, DIG = Digital Output, ST = Schmitt Buffer Input, TTL = TTL Buffer Input,
x = Don’t care (TRIS bit does not affect port direction or is overridden for this option).
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset Values
on Page
TRISH PORTH Data Direction Register 62
PORTH Read PORTH pin/Write PORTH Data Latch 62
LATH LATH Data Output Register 62
LCDSE5 SE47 SE46 SE45 SE44 SE43 SE42 SE41 SE40 64