Datasheet

© 2009 Microchip Technology Inc. DS39663F-page 135
PIC18F87J10 FAMILY
TABLE 11-9: PORTD FUNCTIONS
Pin Name Function
TRIS
Setting
I/O I/O Type Description
RD0/AD0/PSP0 RD0 0 O DIG LATD<0> data output.
1 I ST PORTD<0> data input.
AD0
(2)
x O DIG External memory interface, address/data bit 0 output.
(1)
x I TTL External memory interface, data bit 0 input.
(1)
PSP0 O DIG PSP read output data (LATD<0>); takes priority over port data.
I TTL PSP write data input.
RD1/AD1/PSP1 RD1 0 O DIG LATD<1> data output.
1 I ST PORTD<1> data input.
AD1
(2)
x O DIG External memory interface, address/data bit 1 output.
(1)
x I TTL External memory interface, data bit 1 input.
(1)
PSP1 x O DIG PSP read output data (LATD<1>); takes priority over port data.
x I TTL PSP write data input.
RD2/AD2/PSP2 RD2 0 O DIG LATD<2> data output.
1 I ST PORTD<2> data input.
AD2
(2)
x O DIG External memory interface, address/data bit 2 output.
(1)
x I TTL External memory interface, data bit 2 input.
(1)
PSP2 x O DIG PSP read output data (LATD<2>); takes priority over port data.
x I TTL PSP write data input.
RD3/AD3/PSP3 RD3 0 O DIG LATD<3> data output.
1 I ST PORTD<3> data input.
AD3
(2)
x O DIG External memory interface, address/data bit 3 output.
(1)
x I TTL External memory interface, data bit 3 input.
(1)
PSP3 x O DIG PSP read output data (LATD<3>); takes priority over port data.
x I TTL PSP write data input.
RD4/AD4/
PSP4/SDO2
RD4 0 O DIG LATD<4> data output.
1 I ST PORTD<4> data input.
AD4
(2)
x O DIG External memory interface, address/data bit 4 output.
(1)
x I TTL External memory interface, data bit 4 input.
(1)
PSP4 x O DIG PSP read output data (LATD<4>); takes priority over port data.
x I TTL PSP write data input.
SDO2 0 O DIG SPI data output (MSSP2 module); takes priority over port data.
RD5/AD5/
PSP5/SDI2/
SDA2
RD5 0 O DIG LATD<5> data output.
1 I ST PORTD<5> data input.
AD5
(2)
x O DIG External memory interface, address/data bit 5 output.
(1)
x I TTL External memory interface, data bit 5 input.
(1)
PSP5 x O DIG PSP read output data (LATD<5>); takes priority over port data.
x I TTL PSP write data input.
SDI2 1 I ST SPI data input (MSSP2 module).
SDA2 1 ODIGI
2
C™ data output (MSSP2 module); takes priority over port data.
1 II
2
C/SMB I
2
C data input (MSSP2 module); input type depends on module
setting.
Legend: PWR = Power Supply, O = Output, I = Input, I
2
C™/SMB = I
2
C/SMBus input buffer, 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).
Note 1: External memory interface I/O takes priority over all other digital and PSP I/O.
2: Available on 80-pin devices only.