MA180025 Microchip Technology, MA180025 Datasheet - Page 130

• Manufacturer Part Number: MA180025
• Description: MODULE PLUG-IN PIC18F87J90 PIM
• Manufacturer: Microchip Technology
• Series: PIC®r

Specifications of MA180025

• Accessory Type: Plug-In Module (PIM) - PIC18F87J90
• Product: Microcontroller Modules
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18FxxJxx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PICDEM LCD 2 Demonstration Board (DM163030)
• For Use With: DM163030 - KIT DEV PICDEM LCD2
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

corresponding Data Direction and Output Latch registers
implemented with Schmitt Trigger input buffers. Each pin
PIC18F87J90 FAMILY
10.7
PORTF is a 7-bit wide, bidirectional port. The
are TRISF and LATF. All pins on PORTF are
is individually configurable as an input or output.
PORTF is multiplexed with analog peripheral functions,
as well as LCD segments. Pins, RF1 through RF6, may
be used as comparator inputs or outputs by setting the
appropriate bits in the CMCON register. To use
RF<6:3> as digital inputs, it is also necessary to turn off
the comparators.
DS39933D-page 130
Note 1: On device Resets, pins, RF<6:1>, are
PORTF, LATF and TRISF Registers
2: To configure PORTF as digital I/O, turn off
configured as analog inputs and are read
as ‘0’.
the comparators and set the ADCON1
value.
PORTF is also multiplexed with LCD segment drives
controlled by bits in the LCDSE2 and LCDSE3
registers. I/O port functions are only available when the
segments are disabled.
EXAMPLE 10-6:
CLRF
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
PORTF
LATF
07h
CMCON
0Fh
ADCON1 ; Set PORTF as digital I/O
0CEh
TRISF
; Initialize PORTF by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
;
; Turn off comparators
;
; Value used to
; initialize data
; direction
; Set RF3:RF1 as inputs
; RF5:RF4 as outputs
; RF7:RF6 as inputs
INITIALIZING PORTF
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