5 (type a) external inte, 6 (type d) external inte, Maxq family user’s guide – Maxim Integrated MAXQ Family User Manual
Page 63: 5 (type a) external interrupt flag register (eifx)
6.5.5 (Type A) External Interrupt Flag Register (EIFx)
Bits 7 and 6: Reserved
Bit 5: External Interrupt 5 Flag (IE5). This flag is set when a negative edge (IT1 = 1) or a positive edge (IT1 = 0) is detected on the
INT5 pin. This bit remains set until cleared in software. Setting this bit by software causes an interrupt if enabled.
Bit 4: External Interrupt 4 Flag (IE4). This flag is set when a negative edge (IT1 = 1) or a positive edge (IT1 = 0) is detected on the
INT4 pin. This bit remains set until cleared in software. Setting this bit by software causes an interrupt if enabled.
Bit 3: External Interrupt 3 Flag (IE3). This flag is set when a negative edge (IT1 = 1) or a positive edge (IT1 = 0) is detected on the
INT3 pin. This bit remains set until cleared in software. Setting this bit by software causes an interrupt if enabled.
Bit 2: External Interrupt 2 Flag (IE2). This flag is set when a negative edge (IT1 = 1) or a positive edge (IT1 = 0) is detected on the
INT2 pin. This bit remains set until cleared in software. Setting this bit by software causes an interrupt if enabled.
Bit 1: External Interrupt 1 Flag (IE1). This flag is set when a negative edge (IT0 = 1) or a positive edge (IT0 = 0) is detected on the
INT1 pin. This bit remains set until cleared in software. Setting this bit by software causes an interrupt if enabled.
Bit 0: External Interrupt 0 Flag (IE0). This flag is set when a negative edge (IT0 = 1) or a positive edge (IT0 = 0) is detected on the
INT0 pin. This bit remains set until cleared in software. Setting this bit by software causes an interrupt if enabled.
6.5.6 (Type D) External Interrupt Enable Register (EIEx)
Bit 7: Enable External Interrupt 7 (EX7)
0 = external interrupt 7 function disabled
1 = external interrupt 7 function enabled
Bit 6: Enable External Interrupt 6 (EX6)
0 = external interrupt 6 function disabled
1 = external interrupt 6 function enabled.
Bit 5: Enable External Interrupt 5 (EX5)
0 = external interrupt 5 function disabled
1 = external interrupt 5 function enabled
Bit 4: Enable External Interrupt 4 (EX4)
0 = external interrupt 4 function disabled
1 = external interrupt 4 function enabled
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MAXQ Family User’s Guide
Bit #
7
6
5
4
3
2
1
0
Name
—
—
IE5
IE4
IE3
IE2
IE1
IE0
Reset
0
0
0
0
0
0
0
0
Access
r
r
rw
rw
rw
rw
rw
rw
r = read, w = write
Bit #
7
6
5
4
3
2
1
0
Name
EX7
EX6
EX5
EX4
EX3
EX2
EX1
EX0
Reset
0
0
0
0
0
0
0
0
Access
rw
rw
rw
rw
rw
rw
rw
rw
r = read, w = write
Maxim Integrated