Datasheet

PIC18F/LF1XK50
DS41350E-page 92 Preliminary  2010 Microchip Technology Inc.
TABLE 9-3: PORTB I/O SUMMARY
Pin Function
TRIS
Setting
I/O
I/O
Type
Description
RB4/IOCB4/AN10/
SDI/SDA
RB4 0 O DIG LATB<4> data output; not affected by analog input.
1 I TTL PORTB<4> data input; Programmable weak pull-up.
IOCB4 1 I TTL Interrupt-on-pin change.
AN10 1 I ANA ADC input channel 10.
SDI 1 I ST SPI data input (MSSP module).
SDA 1 IDIGI
2
C™ data output (MSSP module); takes priority over port data.
1 OI2CI
2
C™ data input (MSSP module); input type depends on module
setting.
RB5/IOCB5/AN11/
RX/DT
RB5 0 O DIG LATB<5> data output.
1 I TTL PORTB<5> data input; Programmable weak pull-up.
IOCB5 1 I TTL Interrupt-on-pin change.
AN11 1 I ANA ADC input channel 11.
RX 1 I ST Asynchronous serial receive data input (USART module).
DT 1 ODIG
Synchronous serial data output (USART module); takes priority over
port data.
1 IST
Synchronous serial data input (USART module). User must configure
as an input.
RB6/IOCB6/SCK/
SCL
RB6 0 O DIG LATB<6> data output.
1 I TTL PORTB<6> data input; Programmable weak pull-up.
IOCB6 1 I TTL Interrupt-on-pin change.
SCK 0 O DIG SPI clock output (MSSP module); takes priority over port data.
1 I ST SPI clock input (MSSP module).
SCL 0 ODIGI
2
C™ clock output (MSSP module); takes priority over port data.
1 II2CI
2
C™ clock input (MSSP module); input type depends on module
setting.
RB7/IOCB7/TX/CK RB7 0 O DIG LATB<7> data output.
1 I TTL PORTB<7> data input; Programmable weak pull-up.
IOCB7 1 I TTL Interrupt-on-pin change.
TX 1 ODIG
Asynchronous serial transmit data output (USART module); takes
priority over port data. User must configure as output.
CK
1 ODIG
Synchronous serial clock output (USART module); takes priority over
port data.
1 I ST Synchronous serial clock input (USART module).
Legend: DIG = Digital level output; TTL = TTL input buffer; ST = Schmitt Trigger input buffer; ANA = Analog level input/output;
x = Don’t care (TRIS bit does not affect port direction or is overridden for this option).