PIC18C858-E/L Microchip Technology, PIC18C858-E/L Datasheet - Page 99

• Manufacturer Part Number: PIC18C858-E/L
• Description: IC MCU OTP 16KX16 CAN 84PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C858-E/L

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 68
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 84-PLCC
• For Use With: AC164310 - MODULE SKT FOR PM3 84PLCCDVA18XL840 - ADAPTER DEVICE ICE 84PLCCAC174012 - MODULE SKT PROMATEII 84PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: PIC18C858E/L

8.6
PORTF is an 8-bit wide, bi-directional 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
hi-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
reads and writes the latched output value for PORTF.
PORTF is multiplexed with several analog peripheral
functions including the A/D converter inputs and com-
parator inputs, outputs, and voltage reference.
FIGURE 8-9:
 2000 Microchip Technology Inc.
Note 1: On a Power-on Reset, the RF6:RF0 pins
PORT/Comparator Select
2: To configure PORTF as digital I/O, turn off
Comparator Data Out
PORTF, LATF, and TRISF Registers
Note:
RD PORTF
WR TRISF
To A/D Converter
Data Bus
WR LATF
or
WR PORTF
are configured as inputs and read as ’0’.
comparators and set ADCON1 value.
PORTF RF1/AN6/C2OUT, RF2/AN5/C1OUT BLOCK DIAGRAM
I/O pins have diode protection to V
Data
TRIS Latch
D
D
CK
CK
RD TRISF
Latch
RD LATF
Q
Q
Q
Q
Advanced Information
DD
and V
0
1
Q
SS
.
EN
EXAMPLE 8-6:
CLRF
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
D
V
V
P
Schmitt
Trigger
PORTF
LATF
0x07
CMCON
0x0F
ADCON1
0xCF
TRISF
N
SS
Analog
Input
Mode
DD
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
PIC18CXX8
I/O Pin
DS30475A-page 99