pic16c61 Microchip Technology Inc., pic16c61 Datasheet - Page 37
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pic16c61
Manufacturer Part Number
pic16c61
Description
8-bit Cmos Microcontrollers Technology
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16C61.pdf
(336 pages)
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4.2.2.3
The INTCON Register is a readable and writable regis-
ter which contains the various enable and flag bits for
the TMR0 register overflow, RB port change and exter-
nal RB0/INT pin interrupts.
FIGURE 4-11: INTCON REGISTER (ADDRESS 0Bh, 8Bh, 10Bh 18Bh)
Applicable Devices
61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67
1997 Microchip Technology Inc.
bit7
bit 7:
bit 6:
bit 5:
bit 4:
bit 3:
bit 2:
bit 1:
bit 0:
Note 1: For the PIC16C61/62/64/65, if an interrupt occurs while the GIE bit is being cleared, the GIE bit may unintentionally
R/W-0
GIE
Interrupt flag bits get set when an interrupt condition occurs regardless of the state of its corresponding enable bit or the
global enable bit, GIE (INTCON<7>). User software should ensure the appropriate interrupt flag bits are clear prior to
enabling an interrupt.
2: The PEIE bit (bit6) is unimplemented on the PIC16C61, read as '0'.
INTCON REGISTER
GIE:
1 = Enables all un-masked interrupts
0 = Disables all interrupts
PEIE:
1 = Enables all un-masked peripheral interrupts
0 = Disables all peripheral interrupts
T0IE: TMR0 Overflow Interrupt Enable bit
1 = Enables the TMR0 overflow interrupt
0 = Disables the TMR0 overflow interrupt
INTE: RB0/INT External Interrupt Enable bit
1 = Enables the RB0/INT external interrupt
0 = Disables the RB0/INT external interrupt
RBIE: RB Port Change Interrupt Enable bit
1 = Enables the RB port change interrupt
0 = Disables the RB port change interrupt
T0IF: TMR0 Overflow Interrupt Flag bit
1 = TMR0 register overflowed (must be cleared in software)
0 = TMR0 register did not overflow
INTF: RB0/INT External Interrupt Flag bit
1 = The RB0/INT external interrupt occurred (must be cleared in software)
0 = The RB0/INT external interrupt did not occur
RBIF: RB Port Change Interrupt Flag bit
1 = At least one of the RB7:RB4 pins changed state (see Section 5.2 to clear the interrupt)
0 = None of the RB7:RB4 pins have changed state
be re-enabled by the RETFIE instruction in the user’s Interrupt Service Routine. Refer to Section 13.5 for a detailed
description.
R/W-0
PEIE
(1)
(2)
Global Interrupt Enable bit
Peripheral Interrupt Enable bit
R/W-0
T0IE
R/W-0
INTE
R/W-0
RBIE
R/W-0
T0IF
R/W-0
INTF
Note:
Interrupt flag bits get set when an interrupt
condition occurs regardless of the state of
its corresponding enable bit or the global
enable bit, GIE (INTCON<7>).
R/W-x
RBIF
bit0
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
x
R = Readable bit
= unknown
read as ‘0’
PIC16C6X
DS30234D-page 37
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