PIC18F4580-I/P Microchip Technology Inc., PIC18F4580-I/P Datasheet - Page 81
PIC18F4580-I/P
Manufacturer Part Number
PIC18F4580-I/P
Description
40 PIN, 32 KB FLASH, 1536 RAM, 36 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4580-IP.pdf
(402 pages)
Specifications of PIC18F4580-I/P
A/d Inputs
11-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
CAN/I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
32K Bytes
Ram Size
1.5K Bytes
Speed
40 MHz
Timers
1-8 bit, 3-16 bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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8.1
The INTCON registers are readable and writable regis-
ters which contain various enable, priority and flag bits.
Because of the number of interrupts to be controlled,
PIC18FXX8 devices have three INTCON registers.
They are detailed in Register 8-1 through Register 8-3.
REGISTER 8-1:
2004 Microchip Technology Inc.
INTCON Registers
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
INTCON: INTERRUPT CONTROL REGISTER
Legend:
R = Readable bit
-n = Value at POR
bit 7
GIE/GIEH: Global Interrupt Enable bit
When IPEN (RCON<7>) = 0:
1 = Enables all unmasked interrupts
0 = Disables all interrupts
When IPEN (RCON<7>) = 1:
PEIE/GIEL: Peripheral Interrupt Enable bit
When IPEN (RCON<7>) = 0:
1 = Enables all unmasked peripheral interrupts
0 = Disables all peripheral interrupts
When IPEN (RCON<7>) = 1:
1 = Enables all low priority peripheral interrupts
0 = Disables all low priority peripheral interrupts
TMR0IE: TMR0 Overflow Interrupt Enable bit
1 = Enables the TMR0 overflow interrupt
0 = Disables the TMR0 overflow interrupt
INT0IE: INT0 External Interrupt Enable bit
1 = Enables the INT0 external interrupt
0 = Disables the INT0 external interrupt
RBIE: RB Port Change Interrupt Enable bit
1 = Enables the RB port change interrupt
0 = Disables the RB port change interrupt
TMR0IF: TMR0 Overflow Interrupt Flag bit
1 = TMR0 register has overflowed (must be cleared in software)
0 = TMR0 register did not overflow
INT0IF: INT0 External Interrupt Flag bit
1 = The INT0 external interrupt occurred (must be cleared in software by reading PORTB)
0 = The INT0 external interrupt did not occur
RBIF: RB Port Change Interrupt Flag bit
1 = At least one of the RB7:RB4 pins changed state (must be cleared in software)
0 = None of the RB7:RB4 pins have changed state
1 = Enables all high priority interrupts
0 = Disables all priority interrupts
GIE/GIEH PEIE/GIEL
R/W-0
Note:
A mismatch condition will continue to set this bit. Reading PORTB will end the
mismatch condition and allow the bit to be cleared.
R/W-0
TMR0IE
R/W-0
W = Writable bit
‘1’ = Bit is set
INT0IE
R/W-0
Note:
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
RBIE
Interrupt flag bits are set when an interrupt
condition occurs regardless of the state of
its corresponding enable bit or the global
interrupt enable bit. User software should
ensure the appropriate interrupt flag bits
are clear prior to enabling an interrupt.
This feature allows software polling.
TMR0IF
R/W-0
PIC18FXX8
x = Bit is unknown
INT0IF
R/W-0
DS41159D-page 79
R/W-x
RBIF
bit 0
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