15.13.1 INTCON

Interrupt Control Register
Important: Interrupt flag bits are set when an interrupt condition occurs, regardless of the state of its corresponding enable bit or the global enable bit. User software should ensure the appropriate interrupt flag bits are clear prior to enabling an interrupt. This feature allows for software polling.
Name: INTCON
Address: 0xFF2

Bit 76543210 
 GIE/GIEHPEIE/GIELIPEN  INT2EDGINT1EDGINT0EDG 
Access R/WR/WR/WR/WR/WR/W 
Reset 000111 

Bit 7 – GIE/GIEH Global Interrupt Enable bit

ValueNameDescription
1 If IPEN = 1 Enables all unmasked interrupts and cleared by hardware for high-priority interrupts only
0 If IPEN = 1 Disables all interrupts
1 If IPEN = 0 Enables all unmasked interrupts and cleared by hardware for all interrupts
0 If IPEN = 0 Disables all interrupts

Bit 6 – PEIE/GIEL Peripheral Interrupt Enable bit

ValueNameDescription
1 If IPEN = 1 Enables all low-priority interrupts and cleared by hardware for low-priority interrupts only
0 If IPEN = 1 Disables all low-priority interrupts
1 If IPEN = 0 Enables all unmasked peripheral interrupts
0 If IPEN = 0 Disables all peripheral interrupts

Bit 5 – IPEN Interrupt Priority Enable bit

ValueDescription
1 Enable priority levels on interrupts
0 Disable priority levels on interrupts

Bits 0, 1, 2 – INTxEDG External Interrupt ‘x’ Edge Select bit

ValueDescription
1 Interrupt on rising edge of INTx pin
0 Interrupt on falling edge of INTx pin
Interrupt flag bits are set when an interrupt condition occurs, regardless of the state of its corresponding enable bit or the global enable bit. User software should ensure the appropriate interrupt flag bits are clear prior to enabling an interrupt. This feature allows for software polling.