Extended interrupts and events controller (EXTI) RM0440
452/2126 RM0440 Rev 4
15.5.3 Rising trigger selection register 1 (EXTI_RTSR1)
Address offset: 0x08
Reset value: 0x0000 0000
Note: The configurable wakeup lines are edge-triggered. No glitch must be generated on these
lines. If a rising edge on a configurable interrupt line occurs during a write operation in the
EXTI_RTSR register, the pending bit is not set.
Rising and falling edge triggers can be set for the same interrupt line. In this case, both
generate a trigger condition.
15.5.4 Falling trigger selection register 1 (EXTI_FTSR1)
Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RT31 RT30 RT29 Res. Res. Res. Res. Res. Res. RT22 RT21 RT20 RT19 Res. RT17 RT16
rw rw rw rw rw rw rw rw rw
1514131211109 8765432 1 0
RT15 RT14 RT13 RT12 RT11 RT10 RT9 RT8 RT7 RT6 RT5 RT4 RT3 RT2 RT1 RT0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:29 RTx: Rising trigger event configuration bit of line x (x = 31 to 29)
0: Rising trigger disabled (for Event and Interrupt) for input line
1: Rising trigger enabled (for Event and Interrupt) for input line
Bits 28:23 Reserved, must be kept at reset value.
Bits 22:19 RTx: Rising trigger event configuration bit of line x (x = 22 to 19)
0: Rising trigger disabled (for Event and Interrupt) for input line
1: Rising trigger enabled (for Event and Interrupt) for input line
Bit 18 Reserved, must be kept at reset value.
Bits 17:0 RTx: Rising trigger event configuration bit of line x (x = 17 to 0)
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
FT31 FT30 FT29 Res. Res. Res. Res. Res. Res. FT22 FT21 FT20 FT19 Res. FT17 FT16
rw rw rw rw rw rw rw rw rw
1514131211109 8765432 1 0
FT15 FT14 FT13 FT12 FT11 FT10 FT9 FT8 FT7 FT6 FT5 FT4 FT3 FT2 FT1 FT0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
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