ST STM32F446 Series User Manual

RM0390 Rev 4 247/1328
RM0390 Interrupts and events
249
10.3.3 Rising trigger selection register (EXTI_RTSR)
Address offset: 0x08
Reset value: 0x0000 0000
Note: The external wakeup lines are edge triggered, no glitch must be generated on these lines.
If a rising edge occurs on the external interrupt line while writing to the EXTI_RTSR register,
the pending bit is be set.
Rising and falling edge triggers can be set for the same interrupt line. In this configuration,
both generate a trigger condition.
10.3.4 Falling trigger selection register (EXTI_FTSR)
Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. TR22 TR21 TR20 Res. TR18 TR17 TR16
rw rw rw rw rw rw
1514131211109 8 7654321 0
TR15 TR14 TR13 TR12 TR11 TR10 TR9 TR8 TR7 TR6 TR5 TR4 TR3 TR2 TR1 TR0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:23 Reserved, must be kept at reset value.
Bits 22:20 TRx: Rising trigger event configuration bit of line x
0: Rising trigger disabled (for Event and Interrupt) for input line
1: Rising trigger enabled (for Event and Interrupt) for input line
Bit 19 Reserved, must be kept at reset value.
Bits 18:0 TRx: Rising trigger event configuration bit of line x
0: Rising trigger disabled (for Event and Interrupt) for input line
1: Rising trigger enabled (for Event and Interrupt) for input line
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. TR22 TR21 TR20 Res. TR18 TR17 TR16
rw rw rw rw rw rw
1514131211109 8 7654321 0
TR15 TR14 TR13 TR12 TR11 TR10 TR9 TR8 TR7 TR6 TR5 TR4 TR3 TR2 TR1 TR0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:23 Reserved, must be kept at reset value.
Bits 22:20 TRx: Falling trigger event configuration bit of line x
0: Falling trigger disabled (for Event and Interrupt) for input line
1: Falling trigger enabled (for Event and Interrupt) for input line.
Bit 19 Reserved, must be kept at reset value.
Bits 18:0 TRx: Falling trigger event configuration bit of line x
0: Falling trigger disabled (for Event and Interrupt) for input line
1: Falling trigger enabled (for Event and Interrupt) for input line.

ST STM32F446 Series Specifications

General

Brand	ST
Model	STM32F446 Series
Category	Microcontrollers
Language	English