Exti Registers; Exti Register Overview; Interrupt Mask Register(Exti_Imask); Table 6-2 Exti Register Overview - Nations N32G430 Series User Manual

To configure external interrupts/events on the GPIO line through AFIO_EXTI_CFGy, the AFIO clock must be
enabled first. The general I/O port is connected to 16 external interrupt/event lines in the way shown above. The other
eight EXTI lines are connected as follows:

EXTI line 16 is connected to PVD output

EXTI line 17 is connected to RTC alarm event

EXTI line 18 is connected to the

EXTI line 19 is connected to the RTC wake-up event

EXTI line 20 is connected to

EXTI line 21 is connected to COMP1 output

EXTI line 22 is connected to COMP2 output

EXTI line 23 is connected to COMP3 output

EXTI Registers

EXTI base address: 0x40010400

EXTI register overview

Offset Register
EXTI_IMASK
000h
Reset Value
EXTI_EMASK
004h
Reset Value
EXTI_RT_CFG
008h
Reset Value
EXTI_FT_CFG
00Ch
Reset Value
EXTI_SWIE
010h
Reset Value
EXTI_PEND
014h
Reset Value
EXTI_TS_SEL
018h
Reset Value

Interrupt Mask Register(EXTI_IMASK)

Address offset : 0x00
RTC timestamp event
wake-up interrupt
LPTIM

Table 6-2 EXTI register overview

Reserved
0 0 0
Reserved
0 0 0
Reserved
0 0 0
Reserved
0 0 0
Reserved
0 0 0
Reserved
0 0 0
IMASK[23:0]
0 0 0 0 0 0 0 0 0
EMASK[23:0]
0 0 0 0 0 0 0 0 0
RT_CFG[23:0]
0 0 0 0 0 0 0 0 0
FT_CFG[23:0]
0 0 0 0 0 0 0 0 0
SWIE[23:0]
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
Reserved
185 / 647
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
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0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
TSSEL[3:0]
0 0 0 0