PIC18F6490-E/PT Microchip Technology, PIC18F6490-E/PT Datasheet - Page 131

• Manufacturer Part Number: PIC18F6490-E/PT
• Description: IC PIC MCU FLASH 16KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6490-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, LCD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• For Use With: DM163028 - BOARD DEMO PICDEM LCD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

9.9
PORTJ is an 8-bit wide, bidirectional port. The corre-
sponding Data Direction register is TRISJ. Setting a
TRISJ bit (= 1) will make the corresponding PORTJ pin
an input (i.e., put the corresponding output driver in a
high-impedance mode). Clearing a TRISJ bit (= 0) will
make the corresponding PORTJ pin an output (i.e., put
the contents of the output latch on the selected pin).
The Data Latch register (LATJ) is also memory
mapped. Read-modify-write operations on the LATJ
register read and write the latched output value for
PORTJ.
All pins on PORTJ are implemented with Schmitt
Trigger input buffers. Each pin is individually
configurable as an input or output.
PORTJ is also multiplexed with LCD segment drives
controlled by the LCDSE4 register. I/O port functions
are only available when the segments are disabled.
© 2007 Microchip Technology Inc.
Note:
Note:
PORTJ, TRISJ and
LATJ Registers
PORTJ is available only on 80-pin devices.
On a Power-on Reset, these pins are
configured as digital inputs.
PIC18F6390/6490/8390/8490
EXAMPLE 9-9:
CLRF
CLRF
MOVLW 0xCF
MOVWF TRISJ
PORTJ
LATJ
; Initialize PORTG by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Value used to
; initialize data
; direction
; Set RJ3:RJ0 as inputs
; RJ5:RJ4 as output
; RJ7:RJ6 as inputs
INITIALIZING PORTJ
DS39629C-page 129