SEC1210 datasheet(38/218 Pages) MICROCHIP

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SEC1110/SEC1210

DS00001561C-page 38

 2013 - 2016 Microchip Technology Inc.

9.1.19

INTERRUPT ENABLE 1 REGISTER – IEN1

et0

R/W

Timer 0 Overflow Interrupt Enable:

et0=0 : Timer 0 Overflow Interrupt is disabled.

et0=1 and eal=1 : Timer 0 Overflow Interrupt is enabled.

ex0

R/W

External Interrupt 0 Enable (or of all interrupts except GPIOs)

ex0=0 : External Interrupt 0 is disabled.

ex0=1 : and eal=1 External Interrupt 0 is enabled.

TABLE 9-26:

INTERRUPT ENABLE 1 REGISTER

IEN1

(SFR 0XB8 - RESET=0X00)

INTERRUPT ENABLE 1 REGISTER

BIT

NAME

R/W

DESCRIPTION

exen2

R/W

Timer 2 External Reload Interrupt Enable:

exen2=0 : Timer 2 External Reload Interrupt 2 is disabled.

exen2=1 and eal=1 : Timer 2 External Reload Interrupt 2 is enabled.

swdt

R/W

Watchdog Timer Start/Refresh Flag: set to activate/refresh the

watchdog timer.

When set directly after setting IEN0.wdt, a watchdog timer refresh is

performed. This bit is immediately cleared by hardware.

ex6

R/W

External Interrupt 6 Enable (Power Status Event):

ex6=0 : External Interrupt 6 is disabled.

ex6=1 and eal=1 : External Interrupt 6 is enabled.

ex5

R/W

External Interrupt 5 Enable (USB):

ex5=0 : External Interrupt 5 is disabled.

ex5=1 and eal=1 : External Interrupt 5 is enabled.

ex4

R/W

External Interrupt 4 Enable (Endpoint 4):

ex4=0 : External Interrupt 4 is disabled.

ex4=1 and eal=1 : External Interrupt 4 is enabled.

ex3

R/W

External Interrupt 3 Enable (Endpoint 3):

ex3=0 : External Interrupt 3 is disabled.

ex3=1 and eal=1 : External Interrupt 3 is enabled.

ex2

R/W

External Interrupt 2 Enable (SPI1):

ex2=0 : External Interrupt 2 is disabled.

ex2=1 and eal=1 : External Interrupt 2 is enabled.

ex7

R/W

External Interrupt 7 Enable (Interrupt not connected to any source)

TABLE 9-25:

INTERRUPT ENABLE 0 REGISTER (CONTINUED)

IEN0

(SFR 0XA8 - RESET=0X00)

INTERRUPT ENABLE 0 REGISTER

BIT

NAME

R/W

DESCRIPTION

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