Maxim-integrated MAXQ Family Users Guide: MAXQ2010 Supplement Manual do Utilizador descarregar pdf (Página 48)

MAXQ Family User’s Guide:

MAXQ2010 Supplement

6-10

6.1.22 External Interrupt Flag 0 Register (EIF0, M0[04h])

Each bit in this register is set when a negative or positive edge (depending on the ITn bit setting) is detected on the cor-

responding interrupt pin. Once an external interrupt has been detected, the interrupt flag bit remains set until cleared

by software or a reset. Setting any of these bits causes the corresponding interrupt to trigger if it is enabled to do so.

Bit 7: External Interrupt 7 Edge Detect (IE7)

Bit 6: External Interrupt 6 Edge Detect (IE6)

Bit 5: External Interrupt 5 Edge Detect (IE5)

Bit 4: External Interrupt 4 Edge Detect (IE4)

Bit 3: External Interrupt 3 Edge Detect (IE3)

Bit 2: External Interrupt 2 Edge Detect (IE2)

Bit 1: External Interrupt 1 Edge Detect (IE1)

Bit 0: External Interrupt 0 Edge Detect (IE0)

6.1.23 External Interrupt Flag 1 Register (EIF1, M1[04h])

Each bit in this register is set when a negative or positive edge (depending on the ITn bit setting) is detected on the cor-

responding interrupt pin. Once an external interrupt has been detected, the interrupt flag bit remains set until cleared

by software or a reset. Setting any of these bits causes the corresponding interrupt to trigger if it is enabled to do so.

Bit 7: Reserved

Bit 6: External Interrupt 14 Edge Detect (IE14)

Bit 5: External Interrupt 13 Edge Detect (IE13)

Bit 4: External Interrupt 12 Edge Detect (IE12)

Bit 3: External Interrupt 11 Edge Detect (IE11)

Bit 2: External Interrupt 10 Edge Detect (IE10)

Bit 1: External Interrupt 9 Edge Detect (IE9)

Bit 0: External Interrupt 8 Edge Detect (IE8)

Bit #

7 6 5 4 3 2 1 0

Name IE7 IE6 IE5 IE4 IE3 IE2 IE1 IE0

Reset 0 0 0 0 0 0 0 0

Access rw rw rw rw rw rw rw rw

Bit #

7 6 5 4 3 2 1 0

Name — IE14 IE13 IE12 IE11 IE10 IE9 IE8

Reset 0 0 0 0 0 0 0 0

Access r rw rw rw rw rw rw rw

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 146 147

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Maxim-integrated MAXQ Family Users Guide: MAXQ2010 Supplement Manual do Utilizador Página 48