PIC18LF6310T-I/PT Microchip Technology, PIC18LF6310T-I/PT Datasheet - Page 128
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PIC18LF6310T-I/PT
Manufacturer Part Number
PIC18LF6310T-I/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Specifications of PIC18LF6310T-I/PT
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF6310T-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC18F6310/6410/8310/8410
11.2
PORTB is an 8-bit wide, bidirectional port. The corre-
sponding Data Direction register is TRISB. Setting a
TRISB bit (= 1) will make the corresponding PORTB
pin an input (i.e., put the corresponding output driver in
a High-Impedance mode). Clearing a TRISB bit (= 0)
will make the corresponding PORTB pin an output (i.e.,
put the contents of the output latch on the selected pin).
The Output Latch register (LATB) is also memory
mapped. Read-modify-write operations on the LATB
register read and write the latched output value for
PORTB.
EXAMPLE 11-2:
Each of the PORTB pins has a weak internal pull-up. A
single control bit can turn on all the pull-ups. This is
performed by clearing bit, RBPU (INTCON2<7>). The
weak pull-up is automatically turned off when the port
pin is configured as an output. The pull-ups are
disabled on a Power-on Reset.
DS39635C-page 128
CLRF
CLRF
MOVLW
MOVWF
PORTB, TRISB and
LATB Registers
PORTB
LATB
0CFh
TRISB
; Initialize PORTB by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Value used to
; initialize data
; direction
; Set RB<3:0> as inputs
; RB<5:4> as outputs
; RB<7:6> as inputs
INITIALIZING PORTB
Four of the PORTB pins (RB<7:4>) have an
interrupt-on-change feature. Only pins configured as
inputs can cause this interrupt to occur (i.e., any
RB<7:4> pin configured as an output is excluded from
the interrupt-on-change comparison). The input pins (of
RB<7:4>) are compared with the old value latched on
the last read of PORTB. The “mismatch” outputs of
RB<7:4> are ORed together to generate the RB Port
Change Interrupt with Flag bit, RBIF (INTCON<0>).
This
power-managed modes. The user, in the Interrupt
Service Routine, can clear the interrupt in the following
manner:
a)
b)
c)
A mismatch condition will continue to set flag bit, RBIF.
Reading PORTB will end the mismatch condition and
allow flag bit, RBIF, to be cleared after a one T
The interrupt-on-change feature is recommended for
wake-up on key depression operation and operations
where PORTB is only used for the interrupt-on-change
feature. Polling of PORTB is not recommended while
using the interrupt-on-change feature.
For 80-pin devices, RB3 can be configured as the
alternate peripheral pin for the CCP2 module by
clearing the CCP2MX Configuration bit. This applies
only when the device is in one of the operating modes
other than the default Microcontroller mode. If the
device is in Microcontroller mode, the alternate
assignment for CCP2 is RE7. As with other CCP2 con-
figurations, the user must ensure that the TRISB<3> bit
is set appropriately for the intended operation.
Any read or write of PORTB (except with the
MOVFF (ANY), PORTB instruction). This will
end the mismatch condition.
Wait one T
NOP instruction).
Clear flag bit, RBIF.
interrupt
CY
can
delay (for example, execute one
2010 Microchip Technology Inc.
wake
the
device
CY
delay.
from
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