PIC18F67K90-E/PT Microchip Technology, PIC18F67K90-E/PT Datasheet - Page 151
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PIC18F67K90-E/PT
Manufacturer Part Number
PIC18F67K90-E/PT
Description
128kB Flash, 4kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F66K90-IMR.pdf
(570 pages)
Specifications of PIC18F67K90-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F67K90-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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10.6
External interrupts on the RB0/INT0, RB1/INT1,
RB2/INT2 and RB3/INT3 pins are edge-triggered. If the
corresponding INTEDGx bit in the INTCON2 register is
set (= 1), the interrupt is triggered by a rising edge. If
that bit is clear, the trigger is on the falling edge.
When a valid edge appears on the RBx/INTx pin, the
corresponding flag bit, INTxIF, is set. This interrupt can
be disabled by clearing the corresponding enable bit,
INTxIE. Before re-enabling the interrupt, the flag bit
(INTxIF) must be cleared in software in the Interrupt
Service Routine.
All external interrupts (INT0, INT1, INT2 and INT3) can
wake up the processor from the power-managed
modes if bit, INTxIE, was set prior to going into the
power-managed modes. If the Global Interrupt Enable
bit (GIE) is set, the processor will branch to the interrupt
vector following wake-up.
The interrupt priority for INT1, INT2 and INT3 is
determined by the value contained in the Interrupt
Priority
(INTCON3<7>) and INT3IP (INTCON2<1>).
There is no priority bit associated with INT0. It is always
a high-priority interrupt source.
10.7
In 8-bit mode (the default), an overflow in the TMR0
register (FFh 00h) will set flag bit, TMR0IF. In 16-bit
mode, an overflow in the TMR0H:TMR0L register pair
(FFFFh 0000h) will set TMR0IF.
EXAMPLE 10-1:
2009-2011 Microchip Technology Inc.
MOVWF
MOVFF
MOVFF
;
; USER ISR CODE
;
MOVFF
MOVF
MOVFF
INTx Pin Interrupts
TMR0 Interrupt
bits,
W_TEMP
STATUS, STATUS_TEMP
BSR, BSR_TEMP
BSR_TEMP, BSR
W_TEMP, W
STATUS_TEMP, STATUS
INT1IP
SAVING STATUS, WREG AND BSR REGISTERS IN RAM
(INTCON3<6>),
; W_TEMP is in virtual bank
; STATUS_TEMP located anywhere
; BSR_TMEP located anywhere
; Restore BSR
; Restore WREG
; Restore STATUS
INT2IP
PIC18F87K90 FAMILY
The interrupt can be enabled/disabled by setting/clearing
enable bit, TMR0IE (INTCON<5>). Interrupt priority for
Timer0 is determined by the value contained in the
interrupt priority bit, TMR0IP (INTCON2<2>). For further
details on the Timer0 module, see Section 12.0 “Timer0
Module”.
10.8
An input change on PORTB<7:4> sets flag bit, RBIF
(INTCON<0>). The interrupt can be enabled/disabled
by setting/clearing enable bit, RBIE (INTCON<3>).
Interrupt priority for PORTB interrupt-on-change is
determined by the value contained in the interrupt
priority bit, RBIP (INTCON2<0>).
10.9
During interrupts, the return PC address is saved on
the stack. Additionally, the WREG, STATUS and BSR
registers are saved on the Fast Return Stack.
If a fast return from interrupt is not used (see
Section 6.3 “Data Memory
may need to save the WREG, STATUS and BSR regis-
ters on entry to the Interrupt Service Routine (ISR).
Depending on the user’s application, other registers
may also need to be saved.
Example 10-1
and BSR registers during an Interrupt Service Routine.
PORTB Interrupt-on-Change
Context Saving During Interrupts
saves and restores the WREG, STATUS
Organization”), the user
DS39957D-page 151
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