PCM18XK1 Microchip Technology, PCM18XK1 Datasheet - Page 141

• Manufacturer Part Number: PCM18XK1
• Description: MODULE PROC PIC18F8680,6680,8565
• Manufacturer: Microchip Technology

Specifications of PCM18XK1

• Accessory Type: Processor Module
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICE2000
• For Use With: ICE2000 - EMULATOR MPLAB-ICE 2000 POD
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

10.6
PORTF is an 8-bit wide, bidirectional port. The corre-
sponding data direction register is TRISF. Setting a
TRISF bit (= 1) will make the corresponding PORTF pin
an input (i.e., put the corresponding output driver in a
high-impedance mode). Clearing a TRISF bit (= 0) will
make the corresponding PORTF pin an output (i.e., put
the contents of the output latch on the selected pin).
Read-modify-write operations on the LATF register
read and write the latched output value for PORTF.
PORTF is multiplexed with several analog peripheral
functions, including the A/D converter inputs and
comparator inputs, outputs, and voltage reference.
FIGURE 10-13:
 2004 Microchip Technology Inc.
Note 1: On a Power-on Reset, the RF6:RF0 pins
2: To configure PORTF as digital I/O, turn off
PORTF, LATF and TRISF Registers
are configured as inputs and read as ‘0’.
comparators and set ADCON1 value.
Note 1: I/O pins have diode protection to V
Port/Comparator Select
Comparator Data Out
Data Bus
WR LATF or
WR PORTF
WR TRISF
RD PORTF
To A/D Converter
PORTF RF1/AN6/C2OUT AND RF2/AN7/C1OUT PINS BLOCK DIAGRAM
TRIS Latch
Data Latch
D
D
CK
RD TRISF
CK
RD LATF
Q
Q
Q
Q
PIC18F6585/8585/6680/8680
0
1
DD
and V
Q
EXAMPLE 10-6:
EN
SS
CLRF
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
D
.
PORTF
LATF
07h
CMCON
0Fh
ADCON1
0CFh
TRISF
V
P
N
V
Schmitt
Trigger
Analog
Input
Mode
DD
SS
INITIALIZING PORTF
; Initialize PORTF by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
;
; Turn off comparators
;
; Set PORTF as digital I/O
; Value used to
; initialize data
; direction
; Set RF3:RF0 as inputs
; RF5:RF4 as outputs
; RF7:RF6 as inputs
DS30491C-page 139
I/O pin